Extracting prog: 4m58.480878039s Minimizing prog: 2h2m18.815054892s Simplifying prog options: 0s Extracting C: 3m7.305234269s Simplifying C: 24m7.355208648s extracting reproducer from 1 programs testing a last program of every proc single: executing 1 programs separately with timeout 6m0s testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_RECONFIGURE detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)={0x3c, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x16c}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}]}, 0x3c}}, 0x10) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000b00), 0xffffffffffffffff) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000c40)={0x0, 0x0, &(0x7f0000000c00)={&(0x7f0000000900)=ANY=[@ANYBLOB='4\x00\x00\x00', @ANYRES16=r4, @ANYBLOB="010025bd7000fcdbdf25030000000c000500200100000000000008000100000000000c00020007000000000000000d7eb12ae990f0349fc8376abcaa187236e87e1520a10685b4794b8f43943964db8949188f5a2e8963763c94b01718d420e66e24d93a955d6ca891ec75db339e9ce8c60e2e8ef9100e417937dbdaa788e96e7832df240530ce273ee832fe7921646f7147f04d33f3342b2891398391646d44d47e170dd9e0dad67ecf4d06b224a30288a6a1a5ab4490c95a23e3325bb4ee685d10aebe75947c1de5e5612e4864acb54d916f49efb366d87a7db5cfde11c8ecb4a57ab9cdce4d6908c98d8294dcc225"], 0x34}}, 0x80000) program crashed: INFO: task hung in genl_rcv_msg single: successfully extracted reproducer found reproducer with 7 syscalls minimizing guilty program testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)={0x3c, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x16c}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}]}, 0x3c}}, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000b00), 0xffffffffffffffff) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-sendmsg$NBD_CMD_RECONFIGURE detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)={0x3c, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x16c}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}]}, 0x3c}}, 0x10) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000c40)={0x0, 0x0, &(0x7f0000000c00)={&(0x7f0000000900)=ANY=[@ANYBLOB='4\x00\x00\x00', @ANYRES16, @ANYBLOB="010025bd7000fcdbdf25030000000c000500200100000000000008000100000000000c00020007000000000000000d7eb12ae990f0349fc8376abcaa187236e87e1520a10685b4794b8f43943964db8949188f5a2e8963763c94b01718d420e66e24d93a955d6ca891ec75db339e9ce8c60e2e8ef9100e417937dbdaa788e96e7832df240530ce273ee832fe7921646f7147f04d33f3342b2891398391646d44d47e170dd9e0dad67ecf4d06b224a30288a6a1a5ab4490c95a23e3325bb4ee685d10aebe75947c1de5e5612e4864acb54d916f49efb366d87a7db5cfde11c8ecb4a57ab9cdce4d6908c98d8294dcc225"], 0x34}}, 0x80000) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_RECONFIGURE detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)={0x3c, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x16c}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}]}, 0x3c}}, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000b00), 0xffffffffffffffff) sendmsg$NBD_CMD_RECONFIGURE(0xffffffffffffffff, &(0x7f0000000c40)={0x0, 0x0, &(0x7f0000000c00)={&(0x7f0000000900)=ANY=[@ANYBLOB='4\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="010025bd7000fcdbdf25030000000c000500200100000000000008000100000000000c00020007000000000000000d7eb12ae990f0349fc8376abcaa187236e87e1520a10685b4794b8f43943964db8949188f5a2e8963763c94b01718d420e66e24d93a955d6ca891ec75db339e9ce8c60e2e8ef9100e417937dbdaa788e96e7832df240530ce273ee832fe7921646f7147f04d33f3342b2891398391646d44d47e170dd9e0dad67ecf4d06b224a30288a6a1a5ab4490c95a23e3325bb4ee685d10aebe75947c1de5e5612e4864acb54d916f49efb366d87a7db5cfde11c8ecb4a57ab9cdce4d6908c98d8294dcc225"], 0x34}}, 0x80000) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_RECONFIGURE detailed listing: executing program 0: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000b00), 0xffffffffffffffff) sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000c40)={0x0, 0x0, &(0x7f0000000c00)={&(0x7f0000000900)=ANY=[@ANYBLOB='4\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010025bd7000fcdbdf25030000000c000500200100000000000008000100000000000c00020007000000000000000d7eb12ae990f0349fc8376abcaa187236e87e1520a10685b4794b8f43943964db8949188f5a2e8963763c94b01718d420e66e24d93a955d6ca891ec75db339e9ce8c60e2e8ef9100e417937dbdaa788e96e7832df240530ce273ee832fe7921646f7147f04d33f3342b2891398391646d44d47e170dd9e0dad67ecf4d06b224a30288a6a1a5ab4490c95a23e3325bb4ee685d10aebe75947c1de5e5612e4864acb54d916f49efb366d87a7db5cfde11c8ecb4a57ab9cdce4d6908c98d8294dcc225"], 0x34}}, 0x80000) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_RECONFIGURE detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)={0x3c, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x16c}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}]}, 0x3c}}, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000b00), 0xffffffffffffffff) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000c40)={0x0, 0x0, &(0x7f0000000c00)={&(0x7f0000000900)=ANY=[@ANYBLOB='4\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="010025bd7000fcdbdf25030000000c000500200100000000000008000100000000000c00020007000000000000000d7eb12ae990f0349fc8376abcaa187236e87e1520a10685b4794b8f43943964db8949188f5a2e8963763c94b01718d420e66e24d93a955d6ca891ec75db339e9ce8c60e2e8ef9100e417937dbdaa788e96e7832df240530ce273ee832fe7921646f7147f04d33f3342b2891398391646d44d47e170dd9e0dad67ecf4d06b224a30288a6a1a5ab4490c95a23e3325bb4ee685d10aebe75947c1de5e5612e4864acb54d916f49efb366d87a7db5cfde11c8ecb4a57ab9cdce4d6908c98d8294dcc225"], 0x34}}, 0x80000) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_RECONFIGURE detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)={0x3c, 0x0, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x16c}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r1}}]}]}, 0x3c}}, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000b00), 0xffffffffffffffff) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000c40)={0x0, 0x0, &(0x7f0000000c00)={&(0x7f0000000900)=ANY=[@ANYBLOB='4\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="010025bd7000fcdbdf25030000000c000500200100000000000008000100000000000c00020007000000000000000d7eb12ae990f0349fc8376abcaa187236e87e1520a10685b4794b8f43943964db8949188f5a2e8963763c94b01718d420e66e24d93a955d6ca891ec75db339e9ce8c60e2e8ef9100e417937dbdaa788e96e7832df240530ce273ee832fe7921646f7147f04d33f3342b2891398391646d44d47e170dd9e0dad67ecf4d06b224a30288a6a1a5ab4490c95a23e3325bb4ee685d10aebe75947c1de5e5612e4864acb54d916f49efb366d87a7db5cfde11c8ecb4a57ab9cdce4d6908c98d8294dcc225"], 0x34}}, 0x80000) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_RECONFIGURE detailed listing: executing program 0: r0 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)={0x3c, r0, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x16c}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r1}}]}]}, 0x3c}}, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000b00), 0xffffffffffffffff) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000c40)={0x0, 0x0, &(0x7f0000000c00)={&(0x7f0000000900)=ANY=[@ANYBLOB='4\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="010025bd7000fcdbdf25030000000c000500200100000000000008000100000000000c00020007000000000000000d7eb12ae990f0349fc8376abcaa187236e87e1520a10685b4794b8f43943964db8949188f5a2e8963763c94b01718d420e66e24d93a955d6ca891ec75db339e9ce8c60e2e8ef9100e417937dbdaa788e96e7832df240530ce273ee832fe7921646f7147f04d33f3342b2891398391646d44d47e170dd9e0dad67ecf4d06b224a30288a6a1a5ab4490c95a23e3325bb4ee685d10aebe75947c1de5e5612e4864acb54d916f49efb366d87a7db5cfde11c8ecb4a57ab9cdce4d6908c98d8294dcc225"], 0x34}}, 0x80000) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_RECONFIGURE detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)={0x3c, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x16c}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}]}, 0x3c}}, 0x10) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000b00), 0xffffffffffffffff) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000c40)={0x0, 0x0, &(0x7f0000000c00)={&(0x7f0000000900)=ANY=[@ANYBLOB='4\x00\x00\x00', @ANYRES16=r4, @ANYBLOB="010025bd7000fcdbdf25030000000c000500200100000000000008000100000000000c00020007000000000000000d7eb12ae990f0349fc8376abcaa187236e87e1520a10685b4794b8f43943964db8949188f5a2e8963763c94b01718d420e66e24d93a955d6ca891ec75db339e9ce8c60e2e8ef9100e417937dbdaa788e96e7832df240530ce273ee832fe7921646f7147f04d33f3342b2891398391646d44d47e170dd9e0dad67ecf4d06b224a30288a6a1a5ab4490c95a23e3325bb4ee685d10aebe75947c1de5e5612e4864acb54d916f49efb366d87a7db5cfde11c8ecb4a57ab9cdce4d6908c98d8294dcc225"], 0x34}}, 0x80000) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_RECONFIGURE detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)={0x3c, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x16c}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}]}, 0x3c}}, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000b00), 0xffffffffffffffff) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000c40)={0x0, 0x0, &(0x7f0000000c00)={&(0x7f0000000900)=ANY=[@ANYBLOB='4\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="010025bd7000fcdbdf25030000000c000500200100000000000008000100000000000c00020007000000000000000d7eb12ae990f0349fc8376abcaa187236e87e1520a10685b4794b8f43943964db8949188f5a2e8963763c94b01718d420e66e24d93a955d6ca891ec75db339e9ce8c60e2e8ef9100e417937dbdaa788e96e7832df240530ce273ee832fe7921646f7147f04d33f3342b2891398391646d44d47e170dd9e0dad67ecf4d06b224a30288a6a1a5ab4490c95a23e3325bb4ee685d10aebe75947c1de5e5612e4864acb54d916f49efb366d87a7db5cfde11c8ecb4a57ab9cdce4d6908c98d8294dcc225"], 0x34}}, 0x80000) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_RECONFIGURE detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)) sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000b00), 0xffffffffffffffff) sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000c40)={0x0, 0x0, &(0x7f0000000c00)={&(0x7f0000000900)=ANY=[@ANYBLOB='4\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010025bd7000fcdbdf25030000000c000500200100000000000008000100000000000c00020007000000000000000d7eb12ae990f0349fc8376abcaa187236e87e1520a10685b4794b8f43943964db8949188f5a2e8963763c94b01718d420e66e24d93a955d6ca891ec75db339e9ce8c60e2e8ef9100e417937dbdaa788e96e7832df240530ce273ee832fe7921646f7147f04d33f3342b2891398391646d44d47e170dd9e0dad67ecf4d06b224a30288a6a1a5ab4490c95a23e3325bb4ee685d10aebe75947c1de5e5612e4864acb54d916f49efb366d87a7db5cfde11c8ecb4a57ab9cdce4d6908c98d8294dcc225"], 0x34}}, 0x80000) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_RECONFIGURE detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, 0x0}, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000b00), 0xffffffffffffffff) sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000c40)={0x0, 0x0, &(0x7f0000000c00)={&(0x7f0000000900)=ANY=[@ANYBLOB='4\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010025bd7000fcdbdf25030000000c000500200100000000000008000100000000000c00020007000000000000000d7eb12ae990f0349fc8376abcaa187236e87e1520a10685b4794b8f43943964db8949188f5a2e8963763c94b01718d420e66e24d93a955d6ca891ec75db339e9ce8c60e2e8ef9100e417937dbdaa788e96e7832df240530ce273ee832fe7921646f7147f04d33f3342b2891398391646d44d47e170dd9e0dad67ecf4d06b224a30288a6a1a5ab4490c95a23e3325bb4ee685d10aebe75947c1de5e5612e4864acb54d916f49efb366d87a7db5cfde11c8ecb4a57ab9cdce4d6908c98d8294dcc225"], 0x34}}, 0x80000) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_RECONFIGURE detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000001a80)={0x0}}, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000b00), 0xffffffffffffffff) sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000c40)={0x0, 0x0, &(0x7f0000000c00)={&(0x7f0000000900)=ANY=[@ANYBLOB='4\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010025bd7000fcdbdf25030000000c000500200100000000000008000100000000000c00020007000000000000000d7eb12ae990f0349fc8376abcaa187236e87e1520a10685b4794b8f43943964db8949188f5a2e8963763c94b01718d420e66e24d93a955d6ca891ec75db339e9ce8c60e2e8ef9100e417937dbdaa788e96e7832df240530ce273ee832fe7921646f7147f04d33f3342b2891398391646d44d47e170dd9e0dad67ecf4d06b224a30288a6a1a5ab4490c95a23e3325bb4ee685d10aebe75947c1de5e5612e4864acb54d916f49efb366d87a7db5cfde11c8ecb4a57ab9cdce4d6908c98d8294dcc225"], 0x34}}, 0x80000) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_RECONFIGURE detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)={0x14, r1, 0x1, 0xffffffff}, 0x14}}, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000b00), 0xffffffffffffffff) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000c40)={0x0, 0x0, &(0x7f0000000c00)={&(0x7f0000000900)=ANY=[@ANYBLOB='4\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="010025bd7000fcdbdf25030000000c000500200100000000000008000100000000000c00020007000000000000000d7eb12ae990f0349fc8376abcaa187236e87e1520a10685b4794b8f43943964db8949188f5a2e8963763c94b01718d420e66e24d93a955d6ca891ec75db339e9ce8c60e2e8ef9100e417937dbdaa788e96e7832df240530ce273ee832fe7921646f7147f04d33f3342b2891398391646d44d47e170dd9e0dad67ecf4d06b224a30288a6a1a5ab4490c95a23e3325bb4ee685d10aebe75947c1de5e5612e4864acb54d916f49efb366d87a7db5cfde11c8ecb4a57ab9cdce4d6908c98d8294dcc225"], 0x34}}, 0x80000) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_RECONFIGURE detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)={0x3c, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x16c}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}]}, 0x3c}}, 0x10) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000c40)={0x0, 0x0, &(0x7f0000000c00)={&(0x7f0000000900)=ANY=[@ANYBLOB='4\x00\x00\x00', @ANYRES16=r4, @ANYBLOB="010025bd7000fcdbdf25030000000c000500200100000000000008000100000000000c00020007000000000000000d7eb12ae990f0349fc8376abcaa187236e87e1520a10685b4794b8f43943964db8949188f5a2e8963763c94b01718d420e66e24d93a955d6ca891ec75db339e9ce8c60e2e8ef9100e417937dbdaa788e96e7832df240530ce273ee832fe7921646f7147f04d33f3342b2891398391646d44d47e170dd9e0dad67ecf4d06b224a30288a6a1a5ab4490c95a23e3325bb4ee685d10aebe75947c1de5e5612e4864acb54d916f49efb366d87a7db5cfde11c8ecb4a57ab9cdce4d6908c98d8294dcc225"], 0x34}}, 0x80000) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_RECONFIGURE detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)={0x3c, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x16c}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}]}, 0x3c}}, 0x10) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000b00), 0xffffffffffffffff) sendmsg$NBD_CMD_RECONFIGURE(r3, 0x0, 0x80000) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_RECONFIGURE detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)={0x3c, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x16c}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}]}, 0x3c}}, 0x10) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000b00), 0xffffffffffffffff) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000c40)={0x0, 0x0, 0x0}, 0x80000) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_RECONFIGURE detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)={0x3c, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x16c}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}]}, 0x3c}}, 0x10) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000b00), 0xffffffffffffffff) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000c40)={0x0, 0x0, &(0x7f0000000c00)={0x0, 0x34}}, 0x80000) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_RECONFIGURE detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)={0x3c, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x16c}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}]}, 0x3c}}, 0x10) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000b00), 0xffffffffffffffff) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000c40)={0x0, 0x0, &(0x7f0000000c00)={&(0x7f0000000900)=ANY=[], 0x34}}, 0x80000) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_RECONFIGURE detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)={0x3c, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x16c}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}]}, 0x3c}}, 0x10) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000b00), 0xffffffffffffffff) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000c40)={0x0, 0x0, &(0x7f0000000c00)={&(0x7f0000000900)=ANY=[@ANYBLOB='4\x00\x00\x00', @ANYRES16=r4, @ANYBLOB], 0x34}}, 0x80000) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_RECONFIGURE detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)={0x3c, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x16c}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}]}, 0x3c}}, 0x10) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000b00), 0xffffffffffffffff) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000c40)={0x0, 0x0, &(0x7f0000000c00)={&(0x7f0000000900)=ANY=[@ANYBLOB, @ANYRES16=r4, @ANYBLOB="010025bd7000fcdbdf25030000000c000500200100000000000008000100000000000c00020007000000000000000d7eb12ae990f0349fc8376abcaa187236e87e1520a10685b4794b8f43943964db8949188f5a2e8963763c94b01718d420e66e24d93a955d6ca891ec75db339e9ce8c60e2e8ef9100e417937dbdaa788e96e7832df240530ce273ee832fe7921646f7147f04d33f3342b2891398391646d44d47e170dd9e0dad67ecf4d06b224a30288a6a1a5ab4490c95a23e3325bb4ee685d10aebe75947c1de5e5612e4864acb54d916f49efb366d87a7db5cfde11c8ecb4a57ab9cdce4d6908c98d8294dcc225"], 0x34}}, 0x80000) program did not crash extracting C reproducer testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_RECONFIGURE program crashed: INFO: task hung in genl_rcv_msg simplifying C reproducer testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_RECONFIGURE program crashed: no output from test machine a never seen crash title: no output from test machine, ignore testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_RECONFIGURE program crashed: INFO: task hung in queue_limits_commit_update_frozen a never seen crash title: INFO: task hung in queue_limits_commit_update_frozen, ignore testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_RECONFIGURE program crashed: INFO: task hung in genl_rcv_msg testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_RECONFIGURE program crashed: INFO: task hung in queue_limits_commit_update_frozen a never seen crash title: INFO: task hung in queue_limits_commit_update_frozen, ignore testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_RECONFIGURE program crashed: INFO: task hung in queue_limits_commit_update_frozen a never seen crash title: INFO: task hung in queue_limits_commit_update_frozen, ignore testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_RECONFIGURE program crashed: INFO: task hung in genl_rcv_msg testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_RECONFIGURE program crashed: INFO: task hung in genl_rcv_msg testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_RECONFIGURE detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)={0x3c, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x16c}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}]}, 0x3c}}, 0x10) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000b00), 0xffffffffffffffff) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000c40)={0x0, 0x0, &(0x7f0000000c00)={&(0x7f0000000900)=ANY=[@ANYBLOB='4\x00\x00\x00', @ANYRES16=r4, @ANYBLOB="010025bd7000fcdbdf25030000000c000500200100000000000008000100000000000c00020007000000000000000d7eb12ae990f0349fc8376abcaa187236e87e1520a10685b4794b8f43943964db8949188f5a2e8963763c94b01718d420e66e24d93a955d6ca891ec75db339e9ce8c60e2e8ef9100e417937dbdaa788e96e7832df240530ce273ee832fe7921646f7147f04d33f3342b2891398391646d44d47e170dd9e0dad67ecf4d06b224a30288a6a1a5ab4490c95a23e3325bb4ee685d10aebe75947c1de5e5612e4864acb54d916f49efb366d87a7db5cfde11c8ecb4a57ab9cdce4d6908c98d8294dcc225"], 0x34}}, 0x80000) program crashed: INFO: task hung in genl_rcv_msg validation run: crashed=true testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_RECONFIGURE detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)={0x3c, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x16c}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}]}, 0x3c}}, 0x10) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000b00), 0xffffffffffffffff) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000c40)={0x0, 0x0, &(0x7f0000000c00)={&(0x7f0000000900)=ANY=[@ANYBLOB='4\x00\x00\x00', @ANYRES16=r4, @ANYBLOB="010025bd7000fcdbdf25030000000c000500200100000000000008000100000000000c00020007000000000000000d7eb12ae990f0349fc8376abcaa187236e87e1520a10685b4794b8f43943964db8949188f5a2e8963763c94b01718d420e66e24d93a955d6ca891ec75db339e9ce8c60e2e8ef9100e417937dbdaa788e96e7832df240530ce273ee832fe7921646f7147f04d33f3342b2891398391646d44d47e170dd9e0dad67ecf4d06b224a30288a6a1a5ab4490c95a23e3325bb4ee685d10aebe75947c1de5e5612e4864acb54d916f49efb366d87a7db5cfde11c8ecb4a57ab9cdce4d6908c98d8294dcc225"], 0x34}}, 0x80000) program crashed: INFO: task hung in genl_rcv_msg validation run: crashed=true testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_RECONFIGURE detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)={0x3c, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x16c}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}]}, 0x3c}}, 0x10) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000b00), 0xffffffffffffffff) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000c40)={0x0, 0x0, &(0x7f0000000c00)={&(0x7f0000000900)=ANY=[@ANYBLOB='4\x00\x00\x00', @ANYRES16=r4, @ANYBLOB="010025bd7000fcdbdf25030000000c000500200100000000000008000100000000000c00020007000000000000000d7eb12ae990f0349fc8376abcaa187236e87e1520a10685b4794b8f43943964db8949188f5a2e8963763c94b01718d420e66e24d93a955d6ca891ec75db339e9ce8c60e2e8ef9100e417937dbdaa788e96e7832df240530ce273ee832fe7921646f7147f04d33f3342b2891398391646d44d47e170dd9e0dad67ecf4d06b224a30288a6a1a5ab4490c95a23e3325bb4ee685d10aebe75947c1de5e5612e4864acb54d916f49efb366d87a7db5cfde11c8ecb4a57ab9cdce4d6908c98d8294dcc225"], 0x34}}, 0x80000) program did not crash validation run: crashed=false testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_RECONFIGURE detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)={0x3c, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x16c}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}]}, 0x3c}}, 0x10) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000b00), 0xffffffffffffffff) sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000c40)={0x0, 0x0, &(0x7f0000000c00)={&(0x7f0000000900)=ANY=[@ANYBLOB='4\x00\x00\x00', @ANYRES16=r4, @ANYBLOB="010025bd7000fcdbdf25030000000c000500200100000000000008000100000000000c00020007000000000000000d7eb12ae990f0349fc8376abcaa187236e87e1520a10685b4794b8f43943964db8949188f5a2e8963763c94b01718d420e66e24d93a955d6ca891ec75db339e9ce8c60e2e8ef9100e417937dbdaa788e96e7832df240530ce273ee832fe7921646f7147f04d33f3342b2891398391646d44d47e170dd9e0dad67ecf4d06b224a30288a6a1a5ab4490c95a23e3325bb4ee685d10aebe75947c1de5e5612e4864acb54d916f49efb366d87a7db5cfde11c8ecb4a57ab9cdce4d6908c98d8294dcc225"], 0x34}}, 0x80000) program crashed: INFO: task hung in genl_rcv_msg validation run: crashed=true reproducing took 2h50m41.814811139s repro crashed as (corrupted=false): INFO: task syz-executor:5793 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:21864 pid:5793 tgid:5793 ppid:1 task_flags:0x400140 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5510 [inline] __schedule+0x17d9/0x56c0 kernel/sched/core.c:7234 __schedule_loop kernel/sched/core.c:7311 [inline] schedule+0x164/0x2b0 kernel/sched/core.c:7326 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7383 __mutex_lock_common kernel/locking/mutex.c:726 [inline] __mutex_lock+0x7bf/0x1550 kernel/locking/mutex.c:821 genl_lock net/netlink/genetlink.c:35 [inline] genl_op_lock net/netlink/genetlink.c:60 [inline] genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x7bb/0x940 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:775 __sock_sendmsg net/socket.c:790 [inline] __sys_sendto+0x408/0x5a0 net/socket.c:2252 __do_sys_sendto net/socket.c:2259 [inline] __se_sys_sendto net/socket.c:2255 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2255 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f309f55e90e RSP: 002b:00007ffd54d8c0e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00005555918b8500 RCX: 00007f309f55e90e RDX: 0000000000000028 RSI: 00007f30a0354670 RDI: 0000000000000003 RBP: 0000000000000001 R08: 00007ffd54d8c164 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 R13: 00007ffd54d8c1b8 R14: 00007f30a0354670 R15: 0000000000000000 INFO: task syz-executor:5797 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:21872 pid:5797 tgid:5797 ppid:1 task_flags:0x400140 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5510 [inline] __schedule+0x17d9/0x56c0 kernel/sched/core.c:7234 __schedule_loop kernel/sched/core.c:7311 [inline] schedule+0x164/0x2b0 kernel/sched/core.c:7326 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7383 __mutex_lock_common kernel/locking/mutex.c:726 [inline] __mutex_lock+0x7bf/0x1550 kernel/locking/mutex.c:821 genl_lock net/netlink/genetlink.c:35 [inline] genl_op_lock net/netlink/genetlink.c:60 [inline] genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x7bb/0x940 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:775 __sock_sendmsg net/socket.c:790 [inline] __sys_sendto+0x408/0x5a0 net/socket.c:2252 __do_sys_sendto net/socket.c:2259 [inline] __se_sys_sendto net/socket.c:2255 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2255 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f888c95e90e RSP: 002b:00007ffcc2716708 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000555561a4f500 RCX: 00007f888c95e90e RDX: 0000000000000028 RSI: 00007f888d754670 RDI: 0000000000000003 RBP: 0000000000000001 R08: 00007ffcc2716784 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 R13: 00007ffcc27167d8 R14: 00007f888d754670 R15: 0000000000000000 INFO: task syz-executor:5798 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:22016 pid:5798 tgid:5798 ppid:1 task_flags:0x400140 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5510 [inline] __schedule+0x17d9/0x56c0 kernel/sched/core.c:7234 __schedule_loop kernel/sched/core.c:7311 [inline] schedule+0x164/0x2b0 kernel/sched/core.c:7326 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7383 __mutex_lock_common kernel/locking/mutex.c:726 [inline] __mutex_lock+0x7bf/0x1550 kernel/locking/mutex.c:821 genl_lock net/netlink/genetlink.c:35 [inline] genl_op_lock net/netlink/genetlink.c:60 [inline] genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x7bb/0x940 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:775 __sock_sendmsg net/socket.c:790 [inline] __sys_sendto+0x408/0x5a0 net/socket.c:2252 __do_sys_sendto net/socket.c:2259 [inline] __se_sys_sendto net/socket.c:2255 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2255 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb0bfb5e90e RSP: 002b:00007fffdacbd478 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 000055555cb2e500 RCX: 00007fb0bfb5e90e RDX: 0000000000000028 RSI: 00007fb0c0954670 RDI: 0000000000000003 RBP: 0000000000000001 R08: 00007fffdacbd4f4 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 R13: 00007fffdacbd548 R14: 00007fb0c0954670 R15: 0000000000000000 INFO: task syz.2.24:6046 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.24 state:D stack:26376 pid:6046 tgid:6044 ppid:5800 task_flags:0x480140 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5510 [inline] __schedule+0x17d9/0x56c0 kernel/sched/core.c:7234 __schedule_loop kernel/sched/core.c:7311 [inline] schedule+0x164/0x2b0 kernel/sched/core.c:7326 blk_mq_freeze_queue_wait+0x101/0x180 block/blk-mq.c:191 blk_mq_freeze_queue include/linux/blk-mq.h:956 [inline] queue_limits_commit_update_frozen+0x55/0xd0 block/blk-settings.c:590 nbd_set_size+0x454/0x680 drivers/block/nbd.c:374 nbd_genl_size_set drivers/block/nbd.c:2106 [inline] nbd_genl_reconfigure+0x7e9/0x1e80 drivers/block/nbd.c:2410 genl_family_rcv_msg_doit+0x233/0x340 net/netlink/genetlink.c:1114 genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline] genl_rcv_msg+0x614/0x7a0 net/netlink/genetlink.c:1209 netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x7bb/0x940 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:775 __sock_sendmsg net/socket.c:790 [inline] ____sys_sendmsg+0x54e/0x850 net/socket.c:2684 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2738 __sys_sendmsg net/socket.c:2770 [inline] __do_sys_sendmsg net/socket.c:2775 [inline] __se_sys_sendmsg net/socket.c:2773 [inline] __x64_sys_sendmsg+0x1b1/0x290 net/socket.c:2773 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd2cb79e0d9 RSP: 002b:00007fd2cc6b3028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fd2cba25fa0 RCX: 00007fd2cb79e0d9 RDX: 0000000000080000 RSI: 0000200000000c40 RDI: 0000000000000008 RBP: 00007fd2cb835024 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fd2cba26038 R14: 00007fd2cba25fa0 R15: 00007ffff4881d58 INFO: task syz.1.18:6050 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.18 state:D stack:27472 pid:6050 tgid:6049 ppid:5796 task_flags:0x400140 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5510 [inline] __schedule+0x17d9/0x56c0 kernel/sched/core.c:7234 __schedule_loop kernel/sched/core.c:7311 [inline] schedule+0x164/0x2b0 kernel/sched/core.c:7326 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7383 __mutex_lock_common kernel/locking/mutex.c:726 [inline] __mutex_lock+0x7bf/0x1550 kernel/locking/mutex.c:821 genl_lock net/netlink/genetlink.c:35 [inline] genl_op_lock net/netlink/genetlink.c:60 [inline] genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x7bb/0x940 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:775 __sock_sendmsg net/socket.c:790 [inline] __sys_sendto+0x408/0x5a0 net/socket.c:2252 __do_sys_sendto net/socket.c:2259 [inline] __se_sys_sendto net/socket.c:2255 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2255 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdad475e90e RSP: 002b:00007fdad5696e88 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fdad56986c0 RCX: 00007fdad475e90e RDX: 000000000000001c RSI: 00007fdad5697000 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007fdad5696f04 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 R13: 00007fdad5696f58 R14: 00007fdad5697000 R15: 0000000000000000 INFO: task syz.1.18:6051 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.18 state:D stack:27872 pid:6051 tgid:6049 ppid:5796 task_flags:0x400140 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5510 [inline] __schedule+0x17d9/0x56c0 kernel/sched/core.c:7234 __schedule_loop kernel/sched/core.c:7311 [inline] schedule+0x164/0x2b0 kernel/sched/core.c:7326 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7383 __mutex_lock_common kernel/locking/mutex.c:726 [inline] __mutex_lock+0x7bf/0x1550 kernel/locking/mutex.c:821 genl_lock net/netlink/genetlink.c:35 [inline] genl_op_lock net/netlink/genetlink.c:60 [inline] genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x7bb/0x940 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:775 __sock_sendmsg net/socket.c:790 [inline] __sys_sendto+0x408/0x5a0 net/socket.c:2252 __do_sys_sendto net/socket.c:2259 [inline] __se_sys_sendto net/socket.c:2255 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2255 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdad475e90e RSP: 002b:00007fdad5675e88 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fdad56776c0 RCX: 00007fdad475e90e RDX: 000000000000001c RSI: 00007fdad5676000 RDI: 0000000000000007 RBP: 0000000000000000 R08: 00007fdad5675f04 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000007 R13: 00007fdad5675f58 R14: 00007fdad5676000 R15: 0000000000000000 Showing all locks held in the system: 1 lock held by khungtaskd/30: #0: ffffffff8eb59c60 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline] #0: ffffffff8eb59c60 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline] #0: ffffffff8eb59c60 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6775 2 locks held by getty/5369: #0: ffff888035f7e0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc900032332e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45a/0x1360 drivers/tty/n_tty.c:2211 1 lock held by udevd/5679: #0: ffff888027179350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xde/0xd70 block/bdev.c:948 1 lock held by udevd/5683: #0: ffff888026741350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xde/0xd70 block/bdev.c:948 1 lock held by udevd/5684: #0: ffff88802717d350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xde/0xd70 block/bdev.c:948 2 locks held by syz-executor/5793: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 2 locks held by syz-executor/5797: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 2 locks held by syz-executor/5798: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 6 locks held by syz.2.24/6046: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 #2: ffff8880270f9260 (&nbd->config_lock){+.+.}-{4:4}, at: nbd_genl_reconfigure+0x4bc/0x1e80 drivers/block/nbd.c:2401 #3: ffff8880271e47c8 (&q->limits_lock){+.+.}-{4:4}, at: queue_limits_start_update include/linux/blkdev.h:1103 [inline] #3: ffff8880271e47c8 (&q->limits_lock){+.+.}-{4:4}, at: nbd_set_size+0x263/0x680 drivers/block/nbd.c:354 #4: ffff8880271e4190 (&q->q_usage_counter(io)#49){++++}-{0:0}, at: blk_mq_freeze_queue include/linux/blk-mq.h:956 [inline] #4: ffff8880271e4190 (&q->q_usage_counter(io)#49){++++}-{0:0}, at: queue_limits_commit_update_frozen+0x55/0xd0 block/blk-settings.c:590 #5: ffff8880271e41c8 (&q->q_usage_counter(queue)#33){+.+.}-{0:0}, at: blk_mq_freeze_queue include/linux/blk-mq.h:956 [inline] #5: ffff8880271e41c8 (&q->q_usage_counter(queue)#33){+.+.}-{0:0}, at: queue_limits_commit_update_frozen+0x55/0xd0 block/blk-settings.c:590 2 locks held by syz.1.18/6050: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 2 locks held by syz.1.18/6051: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 2 locks held by syz-executor/6057: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 2 locks held by syz-executor/6058: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 2 locks held by syz-executor/6101: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 2 locks held by syz-executor/6104: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 2 locks held by syz-executor/6107: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 2 locks held by syz-executor/6155: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 2 locks held by syz-executor/6156: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 2 locks held by syz-executor/6199: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 2 locks held by syz-executor/6201: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 2 locks held by syz-executor/6204: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 2 locks held by syz-executor/6253: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 2 locks held by syz-executor/6254: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 ============================================= NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:122 nmi_trigger_cpumask_backtrace+0x17a/0x380 lib/nmi_backtrace.c:65 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline] __sys_info lib/sys_info.c:157 [inline] sys_info+0x135/0x170 lib/sys_info.c:165 check_hung_uninterruptible_tasks kernel/hung_task.c:353 [inline] watchdog+0xfd7/0x1030 kernel/hung_task.c:561 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 5755 Comm: kworker/u8:2 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:cpumask_any_and_but include/linux/cpumask.h:500 [inline] RIP: 0010:smp_call_function_many_cond+0x221/0x15f0 kernel/smp.c:847 Code: e6 00 01 ff 00 31 ff e8 ad 2e 0c 00 81 e3 00 01 ff 00 0f 85 b9 10 00 00 e8 5c 2a 0c 00 bf ff ff ff ff 44 89 f6 e8 8f 2e 0c 00 <41> 8d 5e f8 bf f7 ff ff ff 89 de e8 7f 2e 0c 00 83 fb f7 4c 89 74 RSP: 0018:ffffc900035df700 EFLAGS: 00000293 RAX: ffffffff81bad711 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff888079f31f00 RSI: 0000000000000000 RDI: 00000000ffffffff RBP: ffffc900035df860 R08: ffffffff90578f37 R09: 1ffffffff20af1e6 R10: dffffc0000000000 R11: fffffbfff20af1e7 R12: 0000000000000000 R13: ffffffff93727d50 R14: 0000000000000000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff888124f49000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbb20d39e9c CR3: 000000000e946000 CR4: 00000000003526f0 Call Trace: on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1077 on_each_cpu include/linux/smp.h:72 [inline] smp_text_poke_sync_each_cpu arch/x86/kernel/alternative.c:2773 [inline] smp_text_poke_batch_finish+0xe8a/0x1110 arch/x86/kernel/alternative.c:3066 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 static_key_disable_cpuslocked+0xc5/0x1a0 kernel/jump_label.c:240 static_key_disable+0x1a/0x20 kernel/jump_label.c:248 toggle_allocation_gate+0x1fe/0x290 mm/kfence/core.c:918 process_one_work kernel/workqueue.c:3322 [inline] process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 final repro crashed as (corrupted=false): INFO: task syz-executor:5793 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:21864 pid:5793 tgid:5793 ppid:1 task_flags:0x400140 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5510 [inline] __schedule+0x17d9/0x56c0 kernel/sched/core.c:7234 __schedule_loop kernel/sched/core.c:7311 [inline] schedule+0x164/0x2b0 kernel/sched/core.c:7326 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7383 __mutex_lock_common kernel/locking/mutex.c:726 [inline] __mutex_lock+0x7bf/0x1550 kernel/locking/mutex.c:821 genl_lock net/netlink/genetlink.c:35 [inline] genl_op_lock net/netlink/genetlink.c:60 [inline] genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x7bb/0x940 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:775 __sock_sendmsg net/socket.c:790 [inline] __sys_sendto+0x408/0x5a0 net/socket.c:2252 __do_sys_sendto net/socket.c:2259 [inline] __se_sys_sendto net/socket.c:2255 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2255 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f309f55e90e RSP: 002b:00007ffd54d8c0e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00005555918b8500 RCX: 00007f309f55e90e RDX: 0000000000000028 RSI: 00007f30a0354670 RDI: 0000000000000003 RBP: 0000000000000001 R08: 00007ffd54d8c164 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 R13: 00007ffd54d8c1b8 R14: 00007f30a0354670 R15: 0000000000000000 INFO: task syz-executor:5797 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:21872 pid:5797 tgid:5797 ppid:1 task_flags:0x400140 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5510 [inline] __schedule+0x17d9/0x56c0 kernel/sched/core.c:7234 __schedule_loop kernel/sched/core.c:7311 [inline] schedule+0x164/0x2b0 kernel/sched/core.c:7326 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7383 __mutex_lock_common kernel/locking/mutex.c:726 [inline] __mutex_lock+0x7bf/0x1550 kernel/locking/mutex.c:821 genl_lock net/netlink/genetlink.c:35 [inline] genl_op_lock net/netlink/genetlink.c:60 [inline] genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x7bb/0x940 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:775 __sock_sendmsg net/socket.c:790 [inline] __sys_sendto+0x408/0x5a0 net/socket.c:2252 __do_sys_sendto net/socket.c:2259 [inline] __se_sys_sendto net/socket.c:2255 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2255 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f888c95e90e RSP: 002b:00007ffcc2716708 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000555561a4f500 RCX: 00007f888c95e90e RDX: 0000000000000028 RSI: 00007f888d754670 RDI: 0000000000000003 RBP: 0000000000000001 R08: 00007ffcc2716784 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 R13: 00007ffcc27167d8 R14: 00007f888d754670 R15: 0000000000000000 INFO: task syz-executor:5798 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:22016 pid:5798 tgid:5798 ppid:1 task_flags:0x400140 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5510 [inline] __schedule+0x17d9/0x56c0 kernel/sched/core.c:7234 __schedule_loop kernel/sched/core.c:7311 [inline] schedule+0x164/0x2b0 kernel/sched/core.c:7326 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7383 __mutex_lock_common kernel/locking/mutex.c:726 [inline] __mutex_lock+0x7bf/0x1550 kernel/locking/mutex.c:821 genl_lock net/netlink/genetlink.c:35 [inline] genl_op_lock net/netlink/genetlink.c:60 [inline] genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x7bb/0x940 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:775 __sock_sendmsg net/socket.c:790 [inline] __sys_sendto+0x408/0x5a0 net/socket.c:2252 __do_sys_sendto net/socket.c:2259 [inline] __se_sys_sendto net/socket.c:2255 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2255 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb0bfb5e90e RSP: 002b:00007fffdacbd478 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 000055555cb2e500 RCX: 00007fb0bfb5e90e RDX: 0000000000000028 RSI: 00007fb0c0954670 RDI: 0000000000000003 RBP: 0000000000000001 R08: 00007fffdacbd4f4 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 R13: 00007fffdacbd548 R14: 00007fb0c0954670 R15: 0000000000000000 INFO: task syz.2.24:6046 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.24 state:D stack:26376 pid:6046 tgid:6044 ppid:5800 task_flags:0x480140 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5510 [inline] __schedule+0x17d9/0x56c0 kernel/sched/core.c:7234 __schedule_loop kernel/sched/core.c:7311 [inline] schedule+0x164/0x2b0 kernel/sched/core.c:7326 blk_mq_freeze_queue_wait+0x101/0x180 block/blk-mq.c:191 blk_mq_freeze_queue include/linux/blk-mq.h:956 [inline] queue_limits_commit_update_frozen+0x55/0xd0 block/blk-settings.c:590 nbd_set_size+0x454/0x680 drivers/block/nbd.c:374 nbd_genl_size_set drivers/block/nbd.c:2106 [inline] nbd_genl_reconfigure+0x7e9/0x1e80 drivers/block/nbd.c:2410 genl_family_rcv_msg_doit+0x233/0x340 net/netlink/genetlink.c:1114 genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline] genl_rcv_msg+0x614/0x7a0 net/netlink/genetlink.c:1209 netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x7bb/0x940 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:775 __sock_sendmsg net/socket.c:790 [inline] ____sys_sendmsg+0x54e/0x850 net/socket.c:2684 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2738 __sys_sendmsg net/socket.c:2770 [inline] __do_sys_sendmsg net/socket.c:2775 [inline] __se_sys_sendmsg net/socket.c:2773 [inline] __x64_sys_sendmsg+0x1b1/0x290 net/socket.c:2773 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd2cb79e0d9 RSP: 002b:00007fd2cc6b3028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fd2cba25fa0 RCX: 00007fd2cb79e0d9 RDX: 0000000000080000 RSI: 0000200000000c40 RDI: 0000000000000008 RBP: 00007fd2cb835024 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fd2cba26038 R14: 00007fd2cba25fa0 R15: 00007ffff4881d58 INFO: task syz.1.18:6050 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.18 state:D stack:27472 pid:6050 tgid:6049 ppid:5796 task_flags:0x400140 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5510 [inline] __schedule+0x17d9/0x56c0 kernel/sched/core.c:7234 __schedule_loop kernel/sched/core.c:7311 [inline] schedule+0x164/0x2b0 kernel/sched/core.c:7326 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7383 __mutex_lock_common kernel/locking/mutex.c:726 [inline] __mutex_lock+0x7bf/0x1550 kernel/locking/mutex.c:821 genl_lock net/netlink/genetlink.c:35 [inline] genl_op_lock net/netlink/genetlink.c:60 [inline] genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x7bb/0x940 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:775 __sock_sendmsg net/socket.c:790 [inline] __sys_sendto+0x408/0x5a0 net/socket.c:2252 __do_sys_sendto net/socket.c:2259 [inline] __se_sys_sendto net/socket.c:2255 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2255 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdad475e90e RSP: 002b:00007fdad5696e88 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fdad56986c0 RCX: 00007fdad475e90e RDX: 000000000000001c RSI: 00007fdad5697000 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007fdad5696f04 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 R13: 00007fdad5696f58 R14: 00007fdad5697000 R15: 0000000000000000 INFO: task syz.1.18:6051 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.18 state:D stack:27872 pid:6051 tgid:6049 ppid:5796 task_flags:0x400140 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5510 [inline] __schedule+0x17d9/0x56c0 kernel/sched/core.c:7234 __schedule_loop kernel/sched/core.c:7311 [inline] schedule+0x164/0x2b0 kernel/sched/core.c:7326 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7383 __mutex_lock_common kernel/locking/mutex.c:726 [inline] __mutex_lock+0x7bf/0x1550 kernel/locking/mutex.c:821 genl_lock net/netlink/genetlink.c:35 [inline] genl_op_lock net/netlink/genetlink.c:60 [inline] genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x7bb/0x940 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:775 __sock_sendmsg net/socket.c:790 [inline] __sys_sendto+0x408/0x5a0 net/socket.c:2252 __do_sys_sendto net/socket.c:2259 [inline] __se_sys_sendto net/socket.c:2255 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2255 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdad475e90e RSP: 002b:00007fdad5675e88 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fdad56776c0 RCX: 00007fdad475e90e RDX: 000000000000001c RSI: 00007fdad5676000 RDI: 0000000000000007 RBP: 0000000000000000 R08: 00007fdad5675f04 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000007 R13: 00007fdad5675f58 R14: 00007fdad5676000 R15: 0000000000000000 Showing all locks held in the system: 1 lock held by khungtaskd/30: #0: ffffffff8eb59c60 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline] #0: ffffffff8eb59c60 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline] #0: ffffffff8eb59c60 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6775 2 locks held by getty/5369: #0: ffff888035f7e0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc900032332e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45a/0x1360 drivers/tty/n_tty.c:2211 1 lock held by udevd/5679: #0: ffff888027179350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xde/0xd70 block/bdev.c:948 1 lock held by udevd/5683: #0: ffff888026741350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xde/0xd70 block/bdev.c:948 1 lock held by udevd/5684: #0: ffff88802717d350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xde/0xd70 block/bdev.c:948 2 locks held by syz-executor/5793: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 2 locks held by syz-executor/5797: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 2 locks held by syz-executor/5798: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 6 locks held by syz.2.24/6046: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 #2: ffff8880270f9260 (&nbd->config_lock){+.+.}-{4:4}, at: nbd_genl_reconfigure+0x4bc/0x1e80 drivers/block/nbd.c:2401 #3: ffff8880271e47c8 (&q->limits_lock){+.+.}-{4:4}, at: queue_limits_start_update include/linux/blkdev.h:1103 [inline] #3: ffff8880271e47c8 (&q->limits_lock){+.+.}-{4:4}, at: nbd_set_size+0x263/0x680 drivers/block/nbd.c:354 #4: ffff8880271e4190 (&q->q_usage_counter(io)#49){++++}-{0:0}, at: blk_mq_freeze_queue include/linux/blk-mq.h:956 [inline] #4: ffff8880271e4190 (&q->q_usage_counter(io)#49){++++}-{0:0}, at: queue_limits_commit_update_frozen+0x55/0xd0 block/blk-settings.c:590 #5: ffff8880271e41c8 (&q->q_usage_counter(queue)#33){+.+.}-{0:0}, at: blk_mq_freeze_queue include/linux/blk-mq.h:956 [inline] #5: ffff8880271e41c8 (&q->q_usage_counter(queue)#33){+.+.}-{0:0}, at: queue_limits_commit_update_frozen+0x55/0xd0 block/blk-settings.c:590 2 locks held by syz.1.18/6050: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 2 locks held by syz.1.18/6051: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 2 locks held by syz-executor/6057: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 2 locks held by syz-executor/6058: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 2 locks held by syz-executor/6101: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 2 locks held by syz-executor/6104: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 2 locks held by syz-executor/6107: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 2 locks held by syz-executor/6155: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 2 locks held by syz-executor/6156: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 2 locks held by syz-executor/6199: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 2 locks held by syz-executor/6201: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 2 locks held by syz-executor/6204: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 2 locks held by syz-executor/6253: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 2 locks held by syz-executor/6254: #0: ffffffff90098e68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217 #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90098ca0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 net/netlink/genetlink.c:1208 ============================================= NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:122 nmi_trigger_cpumask_backtrace+0x17a/0x380 lib/nmi_backtrace.c:65 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline] __sys_info lib/sys_info.c:157 [inline] sys_info+0x135/0x170 lib/sys_info.c:165 check_hung_uninterruptible_tasks kernel/hung_task.c:353 [inline] watchdog+0xfd7/0x1030 kernel/hung_task.c:561 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 5755 Comm: kworker/u8:2 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:cpumask_any_and_but include/linux/cpumask.h:500 [inline] RIP: 0010:smp_call_function_many_cond+0x221/0x15f0 kernel/smp.c:847 Code: e6 00 01 ff 00 31 ff e8 ad 2e 0c 00 81 e3 00 01 ff 00 0f 85 b9 10 00 00 e8 5c 2a 0c 00 bf ff ff ff ff 44 89 f6 e8 8f 2e 0c 00 <41> 8d 5e f8 bf f7 ff ff ff 89 de e8 7f 2e 0c 00 83 fb f7 4c 89 74 RSP: 0018:ffffc900035df700 EFLAGS: 00000293 RAX: ffffffff81bad711 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff888079f31f00 RSI: 0000000000000000 RDI: 00000000ffffffff RBP: ffffc900035df860 R08: ffffffff90578f37 R09: 1ffffffff20af1e6 R10: dffffc0000000000 R11: fffffbfff20af1e7 R12: 0000000000000000 R13: ffffffff93727d50 R14: 0000000000000000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff888124f49000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbb20d39e9c CR3: 000000000e946000 CR4: 00000000003526f0 Call Trace: on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1077 on_each_cpu include/linux/smp.h:72 [inline] smp_text_poke_sync_each_cpu arch/x86/kernel/alternative.c:2773 [inline] smp_text_poke_batch_finish+0xe8a/0x1110 arch/x86/kernel/alternative.c:3066 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 static_key_disable_cpuslocked+0xc5/0x1a0 kernel/jump_label.c:240 static_key_disable+0x1a/0x20 kernel/jump_label.c:248 toggle_allocation_gate+0x1fe/0x290 mm/kfence/core.c:918 process_one_work kernel/workqueue.c:3322 [inline] process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245