Extracting prog: 1m23.171620474s
Minimizing prog: 5m0.018296745s
Simplifying prog options: 1m53.500582419s
Extracting C: 1m12.752306977s
Simplifying C: 0s


extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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$NBD_CMD_CONNECT
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000180)={&(0x7f00000000c0)={0x48, r1, 0x1, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x9, 0xa, '^^@-['}, @NBD_ATTR_SOCKETS={0x4}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x3}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x1}]}, 0x48}, 0x1, 0x0, 0x0, 0x40040}, 0x8c0)

program crashed: WARNING in blk_mq_free_tag_set
single: successfully extracted reproducer
found reproducer with 3 syscalls
minimizing guilty program
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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
detailed listing:
executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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$nl_generic-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000180)={&(0x7f00000000c0)={0x48, 0x0, 0x1, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x9, 0xa, '^^@-['}, @NBD_ATTR_SOCKETS={0x4}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x3}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x1}]}, 0x48}, 0x1, 0x0, 0x0, 0x40040}, 0x8c0)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
r0 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000180)={&(0x7f00000000c0)={0x48, r0, 0x1, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x9, 0xa, '^^@-['}, @NBD_ATTR_SOCKETS={0x4}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x3}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x1}]}, 0x48}, 0x1, 0x0, 0x0, 0x40040}, 0x8c0)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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$NBD_CMD_CONNECT
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000180)={&(0x7f00000000c0)={0x48, r1, 0x1, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x9, 0xa, '^^@-['}, @NBD_ATTR_SOCKETS={0x4}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x3}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x1}]}, 0x48}, 0x1, 0x0, 0x0, 0x40040}, 0x8c0)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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$NBD_CMD_CONNECT
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x8c0)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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$NBD_CMD_CONNECT
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000200)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x40040}, 0x8c0)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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$NBD_CMD_CONNECT
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000180)={0x0}, 0x1, 0x0, 0x0, 0x40040}, 0x8c0)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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$NBD_CMD_CONNECT
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000180)={&(0x7f00000000c0)={0x14, r1, 0x1, 0x70bd2b, 0x25dfdbfc}, 0x14}, 0x1, 0x0, 0x0, 0x40040}, 0x8c0)

program did not crash
extracting C reproducer
testing compiled C program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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$NBD_CMD_CONNECT
program did not crash
simplifying guilty program options
testing program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000180)={&(0x7f00000000c0)={0x48, r1, 0x1, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x9, 0xa, '^^@-['}, @NBD_ATTR_SOCKETS={0x4}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x3}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x1}]}, 0x48}, 0x1, 0x0, 0x0, 0x40040}, 0x8c0)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false 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$NBD_CMD_CONNECT
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000180)={&(0x7f00000000c0)={0x48, r1, 0x1, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x9, 0xa, '^^@-['}, @NBD_ATTR_SOCKETS={0x4}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x3}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x1}]}, 0x48}, 0x1, 0x0, 0x0, 0x40040}, 0x8c0)

program did not crash
testing program (duration=30s, {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-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000180)={&(0x7f00000000c0)={0x48, r1, 0x1, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x9, 0xa, '^^@-['}, @NBD_ATTR_SOCKETS={0x4}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x3}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x1}]}, 0x48}, 0x1, 0x0, 0x0, 0x40040}, 0x8c0)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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$NBD_CMD_CONNECT
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000180)={&(0x7f00000000c0)={0x48, r1, 0x1, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x9, 0xa, '^^@-['}, @NBD_ATTR_SOCKETS={0x4}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x3}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x1}]}, 0x48}, 0x1, 0x0, 0x0, 0x40040}, 0x8c0)

program crashed: WARNING in blk_mq_free_tag_set
validation run: crashed=true
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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$NBD_CMD_CONNECT
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000180)={&(0x7f00000000c0)={0x48, r1, 0x1, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x9, 0xa, '^^@-['}, @NBD_ATTR_SOCKETS={0x4}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x3}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x1}]}, 0x48}, 0x1, 0x0, 0x0, 0x40040}, 0x8c0)

program did not crash
validation run: crashed=false
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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$NBD_CMD_CONNECT
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000180)={&(0x7f00000000c0)={0x48, r1, 0x1, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x9, 0xa, '^^@-['}, @NBD_ATTR_SOCKETS={0x4}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x3}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x1}]}, 0x48}, 0x1, 0x0, 0x0, 0x40040}, 0x8c0)

program did not crash
validation run: crashed=false
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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$NBD_CMD_CONNECT
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000180)={&(0x7f00000000c0)={0x48, r1, 0x1, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x9, 0xa, '^^@-['}, @NBD_ATTR_SOCKETS={0x4}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x3}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x1}]}, 0x48}, 0x1, 0x0, 0x0, 0x40040}, 0x8c0)

program crashed: WARNING in blk_mq_free_tag_set
validation run: crashed=true
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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$NBD_CMD_CONNECT
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000180)={&(0x7f00000000c0)={0x48, r1, 0x1, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x9, 0xa, '^^@-['}, @NBD_ATTR_SOCKETS={0x4}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x3}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x1}]}, 0x48}, 0x1, 0x0, 0x0, 0x40040}, 0x8c0)

program did not crash
validation run: crashed=false
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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$NBD_CMD_CONNECT
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000180)={&(0x7f00000000c0)={0x48, r1, 0x1, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x9, 0xa, '^^@-['}, @NBD_ATTR_SOCKETS={0x4}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x3}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x1}]}, 0x48}, 0x1, 0x0, 0x0, 0x40040}, 0x8c0)

program crashed: WARNING in blk_mq_free_tag_set
validation run: crashed=true
reproducing took 13m49.830606394s
repro crashed as (corrupted=false):
------------[ cut here ]------------
timer_delete_sync(&sdp->delay_work) && rcu_segcblist_n_cbs(&sdp->srcu_cblist)
WARNING: kernel/rcu/srcutree.c:706 at cleanup_srcu_struct+0x6e4/0xb30 kernel/rcu/srcutree.c:706, CPU#0: kworker/u33:11/1164
Modules linked in:
CPU: 0 UID: 0 PID: 1164 Comm: kworker/u33:11 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Workqueue: nbd-del nbd_dev_remove_work
RIP: 0010:cleanup_srcu_struct+0x6e4/0xb30 kernel/rcu/srcutree.c:706
Code: 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 f4 03 00 00 48 8b 83 e8 00 00 00 48 8d 93 80 01 00 00 48 85 c0 0f 84 a7 fc ff ff 90 <0f> 0b 90 48 8d 8b 00 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 89
RSP: 0018:ffffc90005f27b60 EFLAGS: 00010202
RAX: 0000000000000004 RBX: ffffe8fefc445dc0 RCX: 0000000000000000
RDX: ffffe8fefc445f40 RSI: ffffffff81f6debf RDI: ffff888028d94b00
RBP: ffff888034b65000 R08: 0000000000000005 R09: 00000000ffffffff
R10: 0000000000000001 R11: 0000000000000000 R12: ffff88802e8f3910
R13: 0000000000000000 R14: ffffffff8e6580b0 R15: ffff88802e8f3950
FS:  0000000000000000(0000) GS:ffff8880d5b59000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f31a9d5da08 CR3: 00000000298b7000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 blk_mq_free_tag_set+0x354/0x550 block/blk-mq.c:4976
 nbd_dev_remove+0x43/0xe0 drivers/block/nbd.c:270
 process_one_work+0xac7/0x1b10 kernel/workqueue.c:3396
 process_scheduled_works kernel/workqueue.c:3479 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3560
 kthread+0x373/0x450 kernel/kthread.c:436
 ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

final repro crashed as (corrupted=false):
------------[ cut here ]------------
timer_delete_sync(&sdp->delay_work) && rcu_segcblist_n_cbs(&sdp->srcu_cblist)
WARNING: kernel/rcu/srcutree.c:706 at cleanup_srcu_struct+0x6e4/0xb30 kernel/rcu/srcutree.c:706, CPU#0: kworker/u33:11/1164
Modules linked in:
CPU: 0 UID: 0 PID: 1164 Comm: kworker/u33:11 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Workqueue: nbd-del nbd_dev_remove_work
RIP: 0010:cleanup_srcu_struct+0x6e4/0xb30 kernel/rcu/srcutree.c:706
Code: 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 f4 03 00 00 48 8b 83 e8 00 00 00 48 8d 93 80 01 00 00 48 85 c0 0f 84 a7 fc ff ff 90 <0f> 0b 90 48 8d 8b 00 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 89
RSP: 0018:ffffc90005f27b60 EFLAGS: 00010202
RAX: 0000000000000004 RBX: ffffe8fefc445dc0 RCX: 0000000000000000
RDX: ffffe8fefc445f40 RSI: ffffffff81f6debf RDI: ffff888028d94b00
RBP: ffff888034b65000 R08: 0000000000000005 R09: 00000000ffffffff
R10: 0000000000000001 R11: 0000000000000000 R12: ffff88802e8f3910
R13: 0000000000000000 R14: ffffffff8e6580b0 R15: ffff88802e8f3950
FS:  0000000000000000(0000) GS:ffff8880d5b59000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f31a9d5da08 CR3: 00000000298b7000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 blk_mq_free_tag_set+0x354/0x550 block/blk-mq.c:4976
 nbd_dev_remove+0x43/0xe0 drivers/block/nbd.c:270
 process_one_work+0xac7/0x1b10 kernel/workqueue.c:3396
 process_scheduled_works kernel/workqueue.c:3479 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3560
 kthread+0x373/0x450 kernel/kthread.c:436
 ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>