Extracting prog: 8m34.630910542s
Minimizing prog: 1h25m28.439203127s
Simplifying prog options: 0s
Extracting C: 3m56.6054406s
Simplifying C: 16m41.281336345s


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: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}}): socket$nl_sock_diag-socket$inet_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$nl_sock_diag(0x10, 0x3, 0x4)
socket$inet_tcp(0x2, 0x1, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f00000003c0)={&(0x7f0000000400)=ANY=[@ANYBLOB='<\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010029bd7000fbdbdf25010000000c00020000000000000000001c0007801800018008000100", @ANYBLOB="04"], 0x3c}, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

program did not crash
single: failed to extract reproducer
single: executing 1 programs separately with timeout 1m40s
testing program (duration=1m40s, {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}}): socket$nl_sock_diag-socket$inet_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$nl_sock_diag(0x10, 0x3, 0x4)
socket$inet_tcp(0x2, 0x1, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f00000003c0)={&(0x7f0000000400)=ANY=[@ANYBLOB='<\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010029bd7000fbdbdf25010000000c00020000000000000000001c0007801800018008000100", @ANYBLOB="04"], 0x3c}, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

program did not crash
single: failed to extract reproducer
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}}): socket$nl_sock_diag-socket$inet_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$nl_sock_diag(0x10, 0x3, 0x4)
socket$inet_tcp(0x2, 0x1, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f00000003c0)={&(0x7f0000000400)=ANY=[@ANYBLOB='<\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010029bd7000fbdbdf25010000000c00020000000000000000001c0007801800018008000100", @ANYBLOB="04"], 0x3c}, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

program crashed: BUG: MAX_LOCKDEP_KEYS too low!
single: successfully extracted reproducer
found reproducer with 5 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}}): socket$nl_sock_diag-socket$inet_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd
detailed listing:
executing program 0:
socket$nl_sock_diag(0x10, 0x3, 0x4)
socket$inet_tcp(0x2, 0x1, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r0)

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}}): socket$nl_sock_diag-socket$inet_tcp-syz_init_net_socket$nl_generic-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$nl_sock_diag(0x10, 0x3, 0x4)
socket$inet_tcp(0x2, 0x1, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f00000003c0)={&(0x7f0000000400)=ANY=[@ANYBLOB='<\x00\x00\x00', @ANYRES16, @ANYBLOB="010029bd7000fbdbdf25010000000c00020000000000000000001c0007801800018008000100", @ANYBLOB="04"], 0x3c}, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

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}}): socket$nl_sock_diag-socket$inet_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$nl_sock_diag(0x10, 0x3, 0x4)
socket$inet_tcp(0x2, 0x1, 0x0)
r0 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f00000001c0)={0x0, 0x0, &(0x7f00000003c0)={&(0x7f0000000400)=ANY=[@ANYBLOB='<\x00\x00\x00', @ANYRES16=r0, @ANYBLOB="010029bd7000fbdbdf25010000000c00020000000000000000001c0007801800018008000100", @ANYBLOB="04"], 0x3c}, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

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}}): socket$nl_sock_diag-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$nl_sock_diag(0x10, 0x3, 0x4)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f00000003c0)={&(0x7f0000000400)=ANY=[@ANYBLOB='<\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010029bd7000fbdbdf25010000000c00020000000000000000001c0007801800018008000100", @ANYBLOB="04"], 0x3c}, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

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}}): socket$inet_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$inet_tcp(0x2, 0x1, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f00000003c0)={&(0x7f0000000400)=ANY=[@ANYBLOB='<\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010029bd7000fbdbdf25010000000c00020000000000000000001c0007801800018008000100", @ANYBLOB="04"], 0x3c}, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

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}}): socket$nl_sock_diag-socket$inet_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$nl_sock_diag(0x10, 0x3, 0x4)
socket$inet_tcp(0x2, 0x1, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(0x0, r0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f00000003c0)={&(0x7f0000000400)=ANY=[@ANYBLOB='<\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010029bd7000fbdbdf25010000000c00020000000000000000001c0007801800018008000100", @ANYBLOB="04"], 0x3c}, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

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}}): socket$nl_sock_diag-socket$inet_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$nl_sock_diag(0x10, 0x3, 0x4)
socket$inet_tcp(0x2, 0x1, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r0)
sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x4000)

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}}): socket$nl_sock_diag-socket$inet_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$nl_sock_diag(0x10, 0x3, 0x4)
socket$inet_tcp(0x2, 0x1, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000001c0)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

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}}): socket$nl_sock_diag-socket$inet_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$nl_sock_diag(0x10, 0x3, 0x4)
socket$inet_tcp(0x2, 0x1, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f00000003c0)={0x0, 0x3c}, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

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}}): socket$nl_sock_diag-socket$inet_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$nl_sock_diag(0x10, 0x3, 0x4)
socket$inet_tcp(0x2, 0x1, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f00000003c0)={&(0x7f0000000400)=ANY=[], 0x3c}, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

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}}): socket$nl_sock_diag-socket$inet_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$nl_sock_diag(0x10, 0x3, 0x4)
socket$inet_tcp(0x2, 0x1, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f00000003c0)={&(0x7f0000000400)=ANY=[@ANYBLOB='<\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010029bd7000fbdbdf25010000000c00020000000000000000001c0007801800018008000100", @ANYBLOB], 0x3c}, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

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}}): socket$nl_sock_diag-socket$inet_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$nl_sock_diag(0x10, 0x3, 0x4)
socket$inet_tcp(0x2, 0x1, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f00000003c0)={&(0x7f0000000400)=ANY=[@ANYBLOB='<\x00\x00\x00', @ANYRES16=r1, @ANYBLOB, @ANYBLOB="04"], 0x3c}, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

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}}): socket$nl_sock_diag-socket$inet_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$nl_sock_diag(0x10, 0x3, 0x4)
socket$inet_tcp(0x2, 0x1, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f00000003c0)={&(0x7f0000000400)=ANY=[@ANYBLOB, @ANYRES16=r1, @ANYBLOB="010029bd7000fbdbdf25010000000c00020000000000000000001c0007801800018008000100", @ANYBLOB="04"], 0x3c}, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

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}}): socket$nl_sock_diag-socket$inet_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
program crashed: BUG: MAX_LOCKDEP_KEYS too low!
simplifying C reproducer
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_sock_diag-socket$inet_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
program crashed: BUG: MAX_LOCKDEP_KEYS too low!
testing compiled C program (duration=6m0s, {Threaded:false 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}}): socket$nl_sock_diag-socket$inet_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
program crashed: BUG: MAX_LOCKDEP_KEYS too low!
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_sock_diag-socket$inet_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
program crashed: BUG: MAX_LOCKDEP_KEYS too low!
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 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}}): socket$nl_sock_diag-socket$inet_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
program crashed: BUG: MAX_LOCKDEP_KEYS too low!
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_sock_diag-socket$inet_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
program crashed: BUG: MAX_LOCKDEP_KEYS too low!
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 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:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_sock_diag-socket$inet_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
program crashed: BUG: MAX_LOCKDEP_KEYS too low!
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_sock_diag-socket$inet_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
program crashed: BUG: MAX_LOCKDEP_KEYS too low!
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 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:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_sock_diag-socket$inet_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$nl_sock_diag(0x10, 0x3, 0x4)
socket$inet_tcp(0x2, 0x1, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f00000003c0)={&(0x7f0000000400)=ANY=[@ANYBLOB='<\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010029bd7000fbdbdf25010000000c00020000000000000000001c0007801800018008000100", @ANYBLOB="04"], 0x3c}, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

program crashed: BUG: MAX_LOCKDEP_KEYS too low!
validation run: crashed=true
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 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:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_sock_diag-socket$inet_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$nl_sock_diag(0x10, 0x3, 0x4)
socket$inet_tcp(0x2, 0x1, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f00000003c0)={&(0x7f0000000400)=ANY=[@ANYBLOB='<\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010029bd7000fbdbdf25010000000c00020000000000000000001c0007801800018008000100", @ANYBLOB="04"], 0x3c}, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

program crashed: BUG: MAX_LOCKDEP_KEYS too low!
validation run: crashed=true
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 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:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_sock_diag-socket$inet_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$nl_sock_diag(0x10, 0x3, 0x4)
socket$inet_tcp(0x2, 0x1, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f00000003c0)={&(0x7f0000000400)=ANY=[@ANYBLOB='<\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010029bd7000fbdbdf25010000000c00020000000000000000001c0007801800018008000100", @ANYBLOB="04"], 0x3c}, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

program crashed: BUG: MAX_LOCKDEP_KEYS too low!
validation run: crashed=true
reproducing took 2h3m37.572517145s
repro crashed as (corrupted=false):
BUG: MAX_LOCKDEP_KEYS too low!
turning off the locking correctness validator.
CPU: 1 UID: 0 PID: 10036 Comm: syz.0.1952 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 register_lock_class+0x2aa/0x2e0 kernel/locking/lockdep.c:1376
 __lock_acquire+0x10c/0x2de0 kernel/locking/lockdep.c:5162
 lock_acquire+0x115/0x350 kernel/locking/lockdep.c:5942
 blk_freeze_acquire_lock block/blk.h:772 [inline]
 blk_freeze_queue_start block/blk-mq.c:185 [inline]
 blk_mq_freeze_queue_nomemsave+0xd1/0x120 block/blk-mq.c:206
 blk_mq_freeze_queue include/linux/blk-mq.h:953 [inline]
 elevator_change+0x194/0x480 block/elevator.c:668
 elevator_set_default+0x375/0x440 block/elevator.c:754
 blk_register_queue+0x404/0x4f0 block/blk-sysfs.c:992
 __add_disk+0x6b8/0xdb0 block/genhd.c:531
 add_disk_fwnode+0x100/0x3a0 block/genhd.c:600
 add_disk include/linux/blkdev.h:801 [inline]
 nbd_dev_add+0x733/0xb60 drivers/block/nbd.c:2026
 nbd_genl_connect+0x96c/0x1cd0 drivers/block/nbd.c:2223
 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:2584
 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218
 netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]
 netlink_unicast+0x8ef/0xa80 net/netlink/af_netlink.c:1361
 netlink_sendmsg+0x7f0/0xb20 net/netlink/af_netlink.c:1920
 sock_sendmsg_nosec+0x14e/0x190 net/socket.c:800
 __sock_sendmsg net/socket.c:818 [inline]
 ____sys_sendmsg+0x54e/0x850 net/socket.c:2715
 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2769
 __sys_sendmsg net/socket.c:2801 [inline]
 __do_sys_sendmsg net/socket.c:2806 [inline]
 __se_sys_sendmsg net/socket.c:2804 [inline]
 __x64_sys_sendmsg+0x1b1/0x290 net/socket.c:2804
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3c9fb9fb19
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffede29da88 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f3c9fe25fa0 RCX: 00007f3c9fb9fb19
RDX: 0000000000004000 RSI: 00002000000001c0 RDI: 0000000000000006
RBP: 00007f3c9fc37b70 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3c9fe25fac R14: 00007f3c9fe25fa0 R15: 00007f3c9fe25fa0
 </TASK>

final repro crashed as (corrupted=false):
BUG: MAX_LOCKDEP_KEYS too low!
turning off the locking correctness validator.
CPU: 1 UID: 0 PID: 10036 Comm: syz.0.1952 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 register_lock_class+0x2aa/0x2e0 kernel/locking/lockdep.c:1376
 __lock_acquire+0x10c/0x2de0 kernel/locking/lockdep.c:5162
 lock_acquire+0x115/0x350 kernel/locking/lockdep.c:5942
 blk_freeze_acquire_lock block/blk.h:772 [inline]
 blk_freeze_queue_start block/blk-mq.c:185 [inline]
 blk_mq_freeze_queue_nomemsave+0xd1/0x120 block/blk-mq.c:206
 blk_mq_freeze_queue include/linux/blk-mq.h:953 [inline]
 elevator_change+0x194/0x480 block/elevator.c:668
 elevator_set_default+0x375/0x440 block/elevator.c:754
 blk_register_queue+0x404/0x4f0 block/blk-sysfs.c:992
 __add_disk+0x6b8/0xdb0 block/genhd.c:531
 add_disk_fwnode+0x100/0x3a0 block/genhd.c:600
 add_disk include/linux/blkdev.h:801 [inline]
 nbd_dev_add+0x733/0xb60 drivers/block/nbd.c:2026
 nbd_genl_connect+0x96c/0x1cd0 drivers/block/nbd.c:2223
 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:2584
 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218
 netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]
 netlink_unicast+0x8ef/0xa80 net/netlink/af_netlink.c:1361
 netlink_sendmsg+0x7f0/0xb20 net/netlink/af_netlink.c:1920
 sock_sendmsg_nosec+0x14e/0x190 net/socket.c:800
 __sock_sendmsg net/socket.c:818 [inline]
 ____sys_sendmsg+0x54e/0x850 net/socket.c:2715
 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2769
 __sys_sendmsg net/socket.c:2801 [inline]
 __do_sys_sendmsg net/socket.c:2806 [inline]
 __se_sys_sendmsg net/socket.c:2804 [inline]
 __x64_sys_sendmsg+0x1b1/0x290 net/socket.c:2804
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3c9fb9fb19
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffede29da88 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f3c9fe25fa0 RCX: 00007f3c9fb9fb19
RDX: 0000000000004000 RSI: 00002000000001c0 RDI: 0000000000000006
RBP: 00007f3c9fc37b70 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3c9fe25fac R14: 00007f3c9fe25fa0 R15: 00007f3c9fe25fa0
 </TASK>