Extracting prog: 9m18.13506423s
Minimizing prog: 1h32m13.028107387s
Simplifying prog options: 22m28.155499829s
Extracting C: 5m6.17481798s
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-socketpair$nbd-sendmsg$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(&(0x7f0000000040), 0xffffffffffffffff)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={<r2=>0xffffffffffffffff})
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000300)={0x3c, r1, 0x1, 0xfffffffe, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0xfb2e77a8993c1937}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xffff}]}, 0x3c}}, 0x20000000)

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: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-socketpair$nbd-sendmsg$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(&(0x7f0000000040), 0xffffffffffffffff)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={<r2=>0xffffffffffffffff})
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000300)={0x3c, r1, 0x1, 0xfffffffe, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0xfb2e77a8993c1937}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xffff}]}, 0x3c}}, 0x20000000)

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: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-socketpair$nbd-sendmsg$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(&(0x7f0000000040), 0xffffffffffffffff)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={<r2=>0xffffffffffffffff})
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000300)={0x3c, r1, 0x1, 0xfffffffe, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0xfb2e77a8993c1937}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xffff}]}, 0x3c}}, 0x20000000)

program crashed: BUG: MAX_LOCKDEP_KEYS too low!
single: successfully extracted reproducer
found reproducer with 4 syscalls
minimizing guilty program
testing program (duration=9m7.70637055s, {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-socketpair$nbd
detailed listing:
executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000))

program did not crash
testing program (duration=9m7.70637055s, {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$nbd(&(0x7f0000000040), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000300)={0x3c, r1, 0x1, 0xfffffffe, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0xfb2e77a8993c1937}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xffff}]}, 0x3c}}, 0x20000000)

program did not crash
testing program (duration=9m7.70637055s, {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$nl_generic-socketpair$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={<r1=>0xffffffffffffffff})
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000300)={0x3c, 0x0, 0x1, 0xfffffffe, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r1}}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0xfb2e77a8993c1937}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xffff}]}, 0x3c}}, 0x20000000)

program did not crash
testing program (duration=9m7.70637055s, {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$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
r0 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={<r1=>0xffffffffffffffff})
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000300)={0x3c, r0, 0x1, 0xfffffffe, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r1}}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0xfb2e77a8993c1937}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xffff}]}, 0x3c}}, 0x20000000)

program did not crash
testing program (duration=9m7.70637055s, {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-socketpair$nbd-sendmsg$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)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={<r2=>0xffffffffffffffff})
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000300)={0x3c, r1, 0x1, 0xfffffffe, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0xfb2e77a8993c1937}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xffff}]}, 0x3c}}, 0x20000000)

program did not crash
testing program (duration=9m7.70637055s, {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-socketpair$nbd-sendmsg$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(&(0x7f0000000040), 0xffffffffffffffff)
socketpair$nbd(0x1, 0x1, 0x0, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000300)={0x3c, r1, 0x1, 0xfffffffe, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0xfb2e77a8993c1937}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xffff}]}, 0x3c}}, 0x20000000)

program did not crash
testing program (duration=9m7.70637055s, {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-socketpair$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000))
sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x20000000)

program did not crash
testing program (duration=9m7.70637055s, {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-socketpair$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000))
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, 0x0}, 0x20000000)

program did not crash
testing program (duration=9m7.70637055s, {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-socketpair$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000))
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000000080)={0x0}}, 0x20000000)

program did not crash
testing program (duration=9m7.70637055s, {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-socketpair$nbd-sendmsg$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(&(0x7f0000000040), 0xffffffffffffffff)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000))
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000300)={0x14, r1, 0x1, 0xfffffffe}, 0x14}}, 0x20000000)

program did not crash
extracting C reproducer
testing compiled C program (duration=9m7.70637055s, {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-socketpair$nbd-sendmsg$NBD_CMD_CONNECT
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
simplifying guilty program options
testing program (duration=9m7.70637055s, {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-socketpair$nbd-sendmsg$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(&(0x7f0000000040), 0xffffffffffffffff)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={<r2=>0xffffffffffffffff})
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000300)={0x3c, r1, 0x1, 0xfffffffe, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0xfb2e77a8993c1937}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xffff}]}, 0x3c}}, 0x20000000)

program crashed: BUG: MAX_LOCKDEP_KEYS too low!
extracting C reproducer
testing compiled C program (duration=9m7.70637055s, {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-socketpair$nbd-sendmsg$NBD_CMD_CONNECT
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
testing program (duration=9m7.70637055s, {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}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$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(&(0x7f0000000040), 0xffffffffffffffff)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={<r2=>0xffffffffffffffff})
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000300)={0x3c, r1, 0x1, 0xfffffffe, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0xfb2e77a8993c1937}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xffff}]}, 0x3c}}, 0x20000000)

program crashed: BUG: MAX_LOCKDEP_KEYS too low!
extracting C reproducer
testing compiled C program (duration=9m7.70637055s, {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}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
testing program (duration=9m7.70637055s, {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}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$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(&(0x7f0000000040), 0xffffffffffffffff)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={<r2=>0xffffffffffffffff})
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000300)={0x3c, r1, 0x1, 0xfffffffe, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0xfb2e77a8993c1937}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xffff}]}, 0x3c}}, 0x20000000)

program crashed: BUG: MAX_LOCKDEP_KEYS too low!
validation run: crashed=true
testing program (duration=9m7.70637055s, {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}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$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(&(0x7f0000000040), 0xffffffffffffffff)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={<r2=>0xffffffffffffffff})
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000300)={0x3c, r1, 0x1, 0xfffffffe, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0xfb2e77a8993c1937}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xffff}]}, 0x3c}}, 0x20000000)

program crashed: BUG: MAX_LOCKDEP_KEYS too low!
validation run: crashed=true
testing program (duration=9m7.70637055s, {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}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$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(&(0x7f0000000040), 0xffffffffffffffff)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={<r2=>0xffffffffffffffff})
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000300)={0x3c, r1, 0x1, 0xfffffffe, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0xfb2e77a8993c1937}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xffff}]}, 0x3c}}, 0x20000000)

program crashed: BUG: MAX_LOCKDEP_KEYS too low!
validation run: crashed=true
reproducing took 2h28m48.459901675s
repro crashed as (corrupted=false):
BUG: MAX_LOCKDEP_KEYS too low!
turning off the locking correctness validator.
CPU: 3 UID: 0 PID: 9909 Comm: syz.0.1903 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
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 register_lock_class+0x4a4/0x560 kernel/locking/lockdep.c:1332
 __lock_acquire+0x3d7/0x1a40 kernel/locking/lockdep.c:5112
 lock_acquire kernel/locking/lockdep.c:5868 [inline]
 lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5825
 blk_alloc_queue+0x610/0x790 block/blk-core.c:504
 blk_mq_alloc_queue+0x174/0x290 block/blk-mq.c:4420
 __blk_mq_alloc_disk+0x29/0x120 block/blk-mq.c:4467
 nbd_dev_add+0x492/0xb10 drivers/block/nbd.c:1991
 nbd_genl_connect+0xb8d/0x1a40 drivers/block/nbd.c:2162
 genl_family_rcv_msg_doit+0x214/0x300 net/netlink/genetlink.c:1114
 genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline]
 genl_rcv_msg+0x560/0x800 net/netlink/genetlink.c:1209
 netlink_rcv_skb+0x159/0x420 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+0x585/0x850 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x8b0/0xda0 net/netlink/af_netlink.c:1900
 sock_sendmsg_nosec net/socket.c:775 [inline]
 __sock_sendmsg net/socket.c:790 [inline]
 ____sys_sendmsg+0xa4d/0xbe0 net/socket.c:2684
 ___sys_sendmsg+0x190/0x1e0 net/socket.c:2738
 __sys_sendmsg+0x160/0x210 net/socket.c:2770
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f435159ce59
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:00007ffe6912fce8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f4351815fa0 RCX: 00007f435159ce59
RDX: 0000000020000000 RSI: 0000200000001ac0 RDI: 0000000000000004
RBP: 00007f4351632e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4351815fac R14: 00007f4351815fa0 R15: 00007f4351815fa0
 </TASK>
nbd1886: detected capacity change from 0 to 127

final repro crashed as (corrupted=false):
BUG: MAX_LOCKDEP_KEYS too low!
turning off the locking correctness validator.
CPU: 3 UID: 0 PID: 9909 Comm: syz.0.1903 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
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 register_lock_class+0x4a4/0x560 kernel/locking/lockdep.c:1332
 __lock_acquire+0x3d7/0x1a40 kernel/locking/lockdep.c:5112
 lock_acquire kernel/locking/lockdep.c:5868 [inline]
 lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5825
 blk_alloc_queue+0x610/0x790 block/blk-core.c:504
 blk_mq_alloc_queue+0x174/0x290 block/blk-mq.c:4420
 __blk_mq_alloc_disk+0x29/0x120 block/blk-mq.c:4467
 nbd_dev_add+0x492/0xb10 drivers/block/nbd.c:1991
 nbd_genl_connect+0xb8d/0x1a40 drivers/block/nbd.c:2162
 genl_family_rcv_msg_doit+0x214/0x300 net/netlink/genetlink.c:1114
 genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline]
 genl_rcv_msg+0x560/0x800 net/netlink/genetlink.c:1209
 netlink_rcv_skb+0x159/0x420 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+0x585/0x850 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x8b0/0xda0 net/netlink/af_netlink.c:1900
 sock_sendmsg_nosec net/socket.c:775 [inline]
 __sock_sendmsg net/socket.c:790 [inline]
 ____sys_sendmsg+0xa4d/0xbe0 net/socket.c:2684
 ___sys_sendmsg+0x190/0x1e0 net/socket.c:2738
 __sys_sendmsg+0x160/0x210 net/socket.c:2770
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f435159ce59
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:00007ffe6912fce8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f4351815fa0 RCX: 00007f435159ce59
RDX: 0000000020000000 RSI: 0000200000001ac0 RDI: 0000000000000004
RBP: 00007f4351632e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4351815fac R14: 00007f4351815fa0 R15: 00007f4351815fa0
 </TASK>
nbd1886: detected capacity change from 0 to 127