Extracting prog: 5m20.24887177s
Minimizing prog: 1h31m43.929824127s
Simplifying prog options: 12m17.020188947s
Extracting C: 5m16.327539157s
Simplifying C: 0s


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_open_dev$loop-ioctl$BLKTRACESETUP-sendmsg$IPCTNL_MSG_EXP_NEW-syz_usb_connect-syz_open_procfs
detailed listing:
executing program 0:
r0 = syz_open_dev$loop(&(0x7f00000000c0), 0x1054c3b7, 0x40801)
ioctl$BLKTRACESETUP(r0, 0xc0481273, &(0x7f0000000000)={'\x00', 0xfff8, 0x6dc4, 0x10000, 0x200000000ffb, 0x8006})
sendmsg$IPCTNL_MSG_EXP_NEW(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000100)=ANY=[@ANYBLOB="80000000000201040000000000000000020000052400028014000180080001000000000008000200ac1e00010c00028005000100000000002400038007000180080001000000010d77ffffffffffff000c000280ca3fbe1a0000000024"], 0x80}}, 0x0) (async)
syz_usb_connect(0x2, 0x3f, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004366b408c70b0800c84f0102030109022d00010000000009040000032eb47d000905f9ffffff00000009050f47"], 0x0)
syz_open_procfs(0xffffffffffffffff, 0x0)

program crashed: INFO: task hung in blk_trace_setup
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}}): syz_open_dev$loop-ioctl$BLKTRACESETUP-sendmsg$IPCTNL_MSG_EXP_NEW-syz_usb_connect
detailed listing:
executing program 0:
r0 = syz_open_dev$loop(&(0x7f00000000c0), 0x1054c3b7, 0x40801)
ioctl$BLKTRACESETUP(r0, 0xc0481273, &(0x7f0000000000)={'\x00', 0xfff8, 0x6dc4, 0x10000, 0x200000000ffb, 0x8006})
sendmsg$IPCTNL_MSG_EXP_NEW(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000100)=ANY=[@ANYBLOB="80000000000201040000000000000000020000052400028014000180080001000000000008000200ac1e00010c00028005000100000000002400038007000180080001000000010d77ffffffffffff000c000280ca3fbe1a0000000024"], 0x80}}, 0x0) (async)
syz_usb_connect(0x2, 0x3f, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004366b408c70b0800c84f0102030109022d00010000000009040000032eb47d000905f9ffffff00000009050f47"], 0x0)

program crashed: INFO: task hung in blk_trace_setup
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_open_dev$loop-ioctl$BLKTRACESETUP-sendmsg$IPCTNL_MSG_EXP_NEW
detailed listing:
executing program 0:
r0 = syz_open_dev$loop(&(0x7f00000000c0), 0x1054c3b7, 0x40801)
ioctl$BLKTRACESETUP(r0, 0xc0481273, &(0x7f0000000000)={'\x00', 0xfff8, 0x6dc4, 0x10000, 0x200000000ffb, 0x8006})
sendmsg$IPCTNL_MSG_EXP_NEW(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000100)=ANY=[@ANYBLOB="80000000000201040000000000000000020000052400028014000180080001000000000008000200ac1e00010c00028005000100000000002400038007000180080001000000010d77ffffffffffff000c000280ca3fbe1a0000000024"], 0x80}}, 0x0) (async)

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_open_dev$loop-ioctl$BLKTRACESETUP-syz_usb_connect
detailed listing:
executing program 0:
r0 = syz_open_dev$loop(&(0x7f00000000c0), 0x1054c3b7, 0x40801)
ioctl$BLKTRACESETUP(r0, 0xc0481273, &(0x7f0000000000)={'\x00', 0xfff8, 0x6dc4, 0x10000, 0x200000000ffb, 0x8006})
syz_usb_connect(0x2, 0x3f, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004366b408c70b0800c84f0102030109022d00010000000009040000032eb47d000905f9ffffff00000009050f47"], 0x0)

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_open_dev$loop-sendmsg$IPCTNL_MSG_EXP_NEW-syz_usb_connect
detailed listing:
executing program 0:
syz_open_dev$loop(&(0x7f00000000c0), 0x1054c3b7, 0x40801)
sendmsg$IPCTNL_MSG_EXP_NEW(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000100)=ANY=[@ANYBLOB="80000000000201040000000000000000020000052400028014000180080001000000000008000200ac1e00010c00028005000100000000002400038007000180080001000000010d77ffffffffffff000c000280ca3fbe1a0000000024"], 0x80}}, 0x0) (async)
syz_usb_connect(0x2, 0x3f, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004366b408c70b0800c84f0102030109022d00010000000009040000032eb47d000905f9ffffff00000009050f47"], 0x0)

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}}): ioctl$BLKTRACESETUP-sendmsg$IPCTNL_MSG_EXP_NEW-syz_usb_connect
detailed listing:
executing program 0:
ioctl$BLKTRACESETUP(0xffffffffffffffff, 0xc0481273, &(0x7f0000000000)={'\x00', 0xfff8, 0x6dc4, 0x10000, 0x200000000ffb, 0x8006})
sendmsg$IPCTNL_MSG_EXP_NEW(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000100)=ANY=[@ANYBLOB="80000000000201040000000000000000020000052400028014000180080001000000000008000200ac1e00010c00028005000100000000002400038007000180080001000000010d77ffffffffffff000c000280ca3fbe1a0000000024"], 0x80}}, 0x0) (async)
syz_usb_connect(0x2, 0x3f, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004366b408c70b0800c84f0102030109022d00010000000009040000032eb47d000905f9ffffff00000009050f47"], 0x0)

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_open_dev$loop-ioctl$BLKTRACESETUP-sendmsg$IPCTNL_MSG_EXP_NEW-syz_usb_connect
detailed listing:
executing program 0:
r0 = syz_open_dev$loop(&(0x7f00000000c0), 0x1054c3b7, 0x40801)
ioctl$BLKTRACESETUP(r0, 0xc0481273, &(0x7f0000000000)={'\x00', 0xfff8, 0x6dc4, 0x10000, 0x200000000ffb, 0x8006})
sendmsg$IPCTNL_MSG_EXP_NEW(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000100)=ANY=[@ANYBLOB="80000000000201040000000000000000020000052400028014000180080001000000000008000200ac1e00010c00028005000100000000002400038007000180080001000000010d77ffffffffffff000c000280ca3fbe1a0000000024"], 0x80}}, 0x0)
syz_usb_connect(0x2, 0x3f, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004366b408c70b0800c84f0102030109022d00010000000009040000032eb47d000905f9ffffff00000009050f47"], 0x0)

program crashed: INFO: task hung in blk_trace_setup
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_open_dev$loop-ioctl$BLKTRACESETUP-sendmsg$IPCTNL_MSG_EXP_NEW-syz_usb_connect
detailed listing:
executing program 0:
r0 = syz_open_dev$loop(0x0, 0x1054c3b7, 0x40801)
ioctl$BLKTRACESETUP(r0, 0xc0481273, &(0x7f0000000000)={'\x00', 0xfff8, 0x6dc4, 0x10000, 0x200000000ffb, 0x8006})
sendmsg$IPCTNL_MSG_EXP_NEW(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000100)=ANY=[@ANYBLOB="80000000000201040000000000000000020000052400028014000180080001000000000008000200ac1e00010c00028005000100000000002400038007000180080001000000010d77ffffffffffff000c000280ca3fbe1a0000000024"], 0x80}}, 0x0)
syz_usb_connect(0x2, 0x3f, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004366b408c70b0800c84f0102030109022d00010000000009040000032eb47d000905f9ffffff00000009050f47"], 0x0)

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_open_dev$loop-ioctl$BLKTRACESETUP-sendmsg$IPCTNL_MSG_EXP_NEW-syz_usb_connect
detailed listing:
executing program 0:
r0 = syz_open_dev$loop(&(0x7f00000000c0), 0x1054c3b7, 0x40801)
ioctl$BLKTRACESETUP(r0, 0xc0481273, 0x0)
sendmsg$IPCTNL_MSG_EXP_NEW(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000100)=ANY=[@ANYBLOB="80000000000201040000000000000000020000052400028014000180080001000000000008000200ac1e00010c00028005000100000000002400038007000180080001000000010d77ffffffffffff000c000280ca3fbe1a0000000024"], 0x80}}, 0x0)
syz_usb_connect(0x2, 0x3f, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004366b408c70b0800c84f0102030109022d00010000000009040000032eb47d000905f9ffffff00000009050f47"], 0x0)

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_open_dev$loop-ioctl$BLKTRACESETUP-sendmsg$IPCTNL_MSG_EXP_NEW-syz_usb_connect
detailed listing:
executing program 0:
r0 = syz_open_dev$loop(&(0x7f00000000c0), 0x1054c3b7, 0x40801)
ioctl$BLKTRACESETUP(r0, 0xc0481273, &(0x7f0000000000)={'\x00', 0xfff8, 0x6dc4, 0x10000, 0x200000000ffb, 0x8006})
sendmsg$IPCTNL_MSG_EXP_NEW(0xffffffffffffffff, 0x0, 0x0)
syz_usb_connect(0x2, 0x3f, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004366b408c70b0800c84f0102030109022d00010000000009040000032eb47d000905f9ffffff00000009050f47"], 0x0)

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_open_dev$loop-ioctl$BLKTRACESETUP-sendmsg$IPCTNL_MSG_EXP_NEW-syz_usb_connect
detailed listing:
executing program 0:
r0 = syz_open_dev$loop(&(0x7f00000000c0), 0x1054c3b7, 0x40801)
ioctl$BLKTRACESETUP(r0, 0xc0481273, &(0x7f0000000000)={'\x00', 0xfff8, 0x6dc4, 0x10000, 0x200000000ffb, 0x8006})
sendmsg$IPCTNL_MSG_EXP_NEW(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, 0x0}, 0x0)
syz_usb_connect(0x2, 0x3f, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004366b408c70b0800c84f0102030109022d00010000000009040000032eb47d000905f9ffffff00000009050f47"], 0x0)

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_open_dev$loop-ioctl$BLKTRACESETUP-sendmsg$IPCTNL_MSG_EXP_NEW-syz_usb_connect
detailed listing:
executing program 0:
r0 = syz_open_dev$loop(&(0x7f00000000c0), 0x1054c3b7, 0x40801)
ioctl$BLKTRACESETUP(r0, 0xc0481273, &(0x7f0000000000)={'\x00', 0xfff8, 0x6dc4, 0x10000, 0x200000000ffb, 0x8006})
sendmsg$IPCTNL_MSG_EXP_NEW(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000000)={0x0, 0x80}}, 0x0)
syz_usb_connect(0x2, 0x3f, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004366b408c70b0800c84f0102030109022d00010000000009040000032eb47d000905f9ffffff00000009050f47"], 0x0)

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_open_dev$loop-ioctl$BLKTRACESETUP-sendmsg$IPCTNL_MSG_EXP_NEW-syz_usb_connect
detailed listing:
executing program 0:
r0 = syz_open_dev$loop(&(0x7f00000000c0), 0x1054c3b7, 0x40801)
ioctl$BLKTRACESETUP(r0, 0xc0481273, &(0x7f0000000000)={'\x00', 0xfff8, 0x6dc4, 0x10000, 0x200000000ffb, 0x8006})
sendmsg$IPCTNL_MSG_EXP_NEW(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000100)=ANY=[@ANYBLOB], 0x80}}, 0x0)
syz_usb_connect(0x2, 0x3f, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004366b408c70b0800c84f0102030109022d00010000000009040000032eb47d000905f9ffffff00000009050f47"], 0x0)

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_open_dev$loop-ioctl$BLKTRACESETUP-sendmsg$IPCTNL_MSG_EXP_NEW-syz_usb_connect
detailed listing:
executing program 0:
r0 = syz_open_dev$loop(&(0x7f00000000c0), 0x1054c3b7, 0x40801)
ioctl$BLKTRACESETUP(r0, 0xc0481273, &(0x7f0000000000)={'\x00', 0xfff8, 0x6dc4, 0x10000, 0x200000000ffb, 0x8006})
sendmsg$IPCTNL_MSG_EXP_NEW(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000100)=ANY=[@ANYBLOB="80000000000201040000000000000000020000052400028014000180080001000000000008000200ac1e00010c00028005000100000000002400038007000180080001000000010d77ffffffffffff000c000280ca3fbe1a0000000024"], 0x80}}, 0x0)
syz_usb_connect(0x2, 0x3f, 0x0, 0x0)

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_open_dev$loop-ioctl$BLKTRACESETUP-sendmsg$IPCTNL_MSG_EXP_NEW-syz_usb_connect
detailed listing:
executing program 0:
r0 = syz_open_dev$loop(&(0x7f00000000c0), 0x1054c3b7, 0x40801)
ioctl$BLKTRACESETUP(r0, 0xc0481273, &(0x7f0000000000)={'\x00', 0xfff8, 0x6dc4, 0x10000, 0x200000000ffb, 0x8006})
sendmsg$IPCTNL_MSG_EXP_NEW(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000100)=ANY=[@ANYBLOB="80000000000201040000000000000000020000052400028014000180080001000000000008000200ac1e00010c00028005000100000000002400038007000180080001000000010d77ffffffffffff000c000280ca3fbe1a0000000024"], 0x80}}, 0x0)
syz_usb_connect(0x2, 0x3f, &(0x7f0000000100)=ANY=[@ANYBLOB], 0x0)

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_open_dev$loop-ioctl$BLKTRACESETUP-sendmsg$IPCTNL_MSG_EXP_NEW-syz_usb_connect
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
simplifying guilty program options
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$loop-ioctl$BLKTRACESETUP-sendmsg$IPCTNL_MSG_EXP_NEW-syz_usb_connect
detailed listing:
executing program 0:
r0 = syz_open_dev$loop(&(0x7f00000000c0), 0x1054c3b7, 0x40801)
ioctl$BLKTRACESETUP(r0, 0xc0481273, &(0x7f0000000000)={'\x00', 0xfff8, 0x6dc4, 0x10000, 0x200000000ffb, 0x8006})
sendmsg$IPCTNL_MSG_EXP_NEW(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000100)=ANY=[@ANYBLOB="80000000000201040000000000000000020000052400028014000180080001000000000008000200ac1e00010c00028005000100000000002400038007000180080001000000010d77ffffffffffff000c000280ca3fbe1a0000000024"], 0x80}}, 0x0)
syz_usb_connect(0x2, 0x3f, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004366b408c70b0800c84f0102030109022d00010000000009040000032eb47d000905f9ffffff00000009050f47"], 0x0)

program did not crash
testing 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_open_dev$loop-ioctl$BLKTRACESETUP-sendmsg$IPCTNL_MSG_EXP_NEW-syz_usb_connect
detailed listing:
executing program 0:
r0 = syz_open_dev$loop(&(0x7f00000000c0), 0x1054c3b7, 0x40801)
ioctl$BLKTRACESETUP(r0, 0xc0481273, &(0x7f0000000000)={'\x00', 0xfff8, 0x6dc4, 0x10000, 0x200000000ffb, 0x8006})
sendmsg$IPCTNL_MSG_EXP_NEW(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000100)=ANY=[@ANYBLOB="80000000000201040000000000000000020000052400028014000180080001000000000008000200ac1e00010c00028005000100000000002400038007000180080001000000010d77ffffffffffff000c000280ca3fbe1a0000000024"], 0x80}}, 0x0)
syz_usb_connect(0x2, 0x3f, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004366b408c70b0800c84f0102030109022d00010000000009040000032eb47d000905f9ffffff00000009050f47"], 0x0)

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_open_dev$loop-ioctl$BLKTRACESETUP-sendmsg$IPCTNL_MSG_EXP_NEW-syz_usb_connect
detailed listing:
executing program 0:
r0 = syz_open_dev$loop(&(0x7f00000000c0), 0x1054c3b7, 0x40801)
ioctl$BLKTRACESETUP(r0, 0xc0481273, &(0x7f0000000000)={'\x00', 0xfff8, 0x6dc4, 0x10000, 0x200000000ffb, 0x8006})
sendmsg$IPCTNL_MSG_EXP_NEW(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000100)=ANY=[@ANYBLOB="80000000000201040000000000000000020000052400028014000180080001000000000008000200ac1e00010c00028005000100000000002400038007000180080001000000010d77ffffffffffff000c000280ca3fbe1a0000000024"], 0x80}}, 0x0)
syz_usb_connect(0x2, 0x3f, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004366b408c70b0800c84f0102030109022d00010000000009040000032eb47d000905f9ffffff00000009050f47"], 0x0)

program did not crash
validation run: crashed=false
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_open_dev$loop-ioctl$BLKTRACESETUP-sendmsg$IPCTNL_MSG_EXP_NEW-syz_usb_connect
detailed listing:
executing program 0:
r0 = syz_open_dev$loop(&(0x7f00000000c0), 0x1054c3b7, 0x40801)
ioctl$BLKTRACESETUP(r0, 0xc0481273, &(0x7f0000000000)={'\x00', 0xfff8, 0x6dc4, 0x10000, 0x200000000ffb, 0x8006})
sendmsg$IPCTNL_MSG_EXP_NEW(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000100)=ANY=[@ANYBLOB="80000000000201040000000000000000020000052400028014000180080001000000000008000200ac1e00010c00028005000100000000002400038007000180080001000000010d77ffffffffffff000c000280ca3fbe1a0000000024"], 0x80}}, 0x0)
syz_usb_connect(0x2, 0x3f, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004366b408c70b0800c84f0102030109022d00010000000009040000032eb47d000905f9ffffff00000009050f47"], 0x0)

program crashed: INFO: task hung in blk_trace_setup
validation run: crashed=true
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_open_dev$loop-ioctl$BLKTRACESETUP-sendmsg$IPCTNL_MSG_EXP_NEW-syz_usb_connect
detailed listing:
executing program 0:
r0 = syz_open_dev$loop(&(0x7f00000000c0), 0x1054c3b7, 0x40801)
ioctl$BLKTRACESETUP(r0, 0xc0481273, &(0x7f0000000000)={'\x00', 0xfff8, 0x6dc4, 0x10000, 0x200000000ffb, 0x8006})
sendmsg$IPCTNL_MSG_EXP_NEW(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000100)=ANY=[@ANYBLOB="80000000000201040000000000000000020000052400028014000180080001000000000008000200ac1e00010c00028005000100000000002400038007000180080001000000010d77ffffffffffff000c000280ca3fbe1a0000000024"], 0x80}}, 0x0)
syz_usb_connect(0x2, 0x3f, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004366b408c70b0800c84f0102030109022d00010000000009040000032eb47d000905f9ffffff00000009050f47"], 0x0)

program crashed: INFO: task hung in blk_trace_setup
validation run: crashed=true
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_open_dev$loop-ioctl$BLKTRACESETUP-sendmsg$IPCTNL_MSG_EXP_NEW-syz_usb_connect
detailed listing:
executing program 0:
r0 = syz_open_dev$loop(&(0x7f00000000c0), 0x1054c3b7, 0x40801)
ioctl$BLKTRACESETUP(r0, 0xc0481273, &(0x7f0000000000)={'\x00', 0xfff8, 0x6dc4, 0x10000, 0x200000000ffb, 0x8006})
sendmsg$IPCTNL_MSG_EXP_NEW(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000100)=ANY=[@ANYBLOB="80000000000201040000000000000000020000052400028014000180080001000000000008000200ac1e00010c00028005000100000000002400038007000180080001000000010d77ffffffffffff000c000280ca3fbe1a0000000024"], 0x80}}, 0x0)
syz_usb_connect(0x2, 0x3f, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004366b408c70b0800c84f0102030109022d00010000000009040000032eb47d000905f9ffffff00000009050f47"], 0x0)

program did not crash
validation run: crashed=false
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_open_dev$loop-ioctl$BLKTRACESETUP-sendmsg$IPCTNL_MSG_EXP_NEW-syz_usb_connect
detailed listing:
executing program 0:
r0 = syz_open_dev$loop(&(0x7f00000000c0), 0x1054c3b7, 0x40801)
ioctl$BLKTRACESETUP(r0, 0xc0481273, &(0x7f0000000000)={'\x00', 0xfff8, 0x6dc4, 0x10000, 0x200000000ffb, 0x8006})
sendmsg$IPCTNL_MSG_EXP_NEW(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000100)=ANY=[@ANYBLOB="80000000000201040000000000000000020000052400028014000180080001000000000008000200ac1e00010c00028005000100000000002400038007000180080001000000010d77ffffffffffff000c000280ca3fbe1a0000000024"], 0x80}}, 0x0)
syz_usb_connect(0x2, 0x3f, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004366b408c70b0800c84f0102030109022d00010000000009040000032eb47d000905f9ffffff00000009050f47"], 0x0)

program crashed: INFO: task hung in blk_trace_setup
validation run: crashed=true
reproducing took 2h17m48.247180959s
repro crashed as (corrupted=false):
INFO: task syz.1.18:6034 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.18        state:D stack:27544 pid:6034  tgid:6033  ppid:5759   task_flags:0x480040 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5396 [inline]
 __schedule+0x16f9/0x5500 kernel/sched/core.c:7197
 __schedule_loop kernel/sched/core.c:7276 [inline]
 rt_mutex_schedule+0x76/0xf0 kernel/sched/core.c:7572
 rt_mutex_slowlock_block+0x508/0x680 kernel/locking/rtmutex.c:1667
 __rt_mutex_slowlock kernel/locking/rtmutex.c:1744 [inline]
 __rt_mutex_slowlock_locked kernel/locking/rtmutex.c:1784 [inline]
 rt_mutex_slowlock+0x2dc/0x780 kernel/locking/rtmutex.c:1824
 __rt_mutex_lock kernel/locking/rtmutex.c:1839 [inline]
 __mutex_lock_common kernel/locking/rtmutex_api.c:541 [inline]
 mutex_lock_nested+0x168/0x1d0 kernel/locking/rtmutex_api.c:559
 blk_debugfs_lock_nomemsave block/blk.h:758 [inline]
 blk_debugfs_lock block/blk.h:770 [inline]
 blk_trace_setup+0x2d3/0x520 kernel/trace/blktrace.c:788
 blk_trace_ioctl+0x37f/0x920 kernel/trace/blktrace.c:937
 blkdev_ioctl+0x4c4/0x750 block/ioctl.c:786
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xff/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc73042ce59
RSP: 002b:00007fc72fa8e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fc7306a5fa0 RCX: 00007fc73042ce59
RDX: 0000200000000000 RSI: 00000000c0481273 RDI: 0000000000000003
RBP: 00007fc7304c2d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc7306a6038 R14: 00007fc7306a5fa0 R15: 00007ffff6c811e8
 </TASK>
INFO: task syz.2.19:6037 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.19        state:D stack:27296 pid:6037  tgid:6036  ppid:5761   task_flags:0x480040 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5396 [inline]
 __schedule+0x16f9/0x5500 kernel/sched/core.c:7197
 __schedule_loop kernel/sched/core.c:7276 [inline]
 rt_mutex_schedule+0x76/0xf0 kernel/sched/core.c:7572
 rt_mutex_slowlock_block+0x508/0x680 kernel/locking/rtmutex.c:1667
 __rt_mutex_slowlock kernel/locking/rtmutex.c:1744 [inline]
 __rt_mutex_slowlock_locked kernel/locking/rtmutex.c:1784 [inline]
 rt_mutex_slowlock+0x2dc/0x780 kernel/locking/rtmutex.c:1824
 __rt_mutex_lock kernel/locking/rtmutex.c:1839 [inline]
 __mutex_lock_common kernel/locking/rtmutex_api.c:541 [inline]
 mutex_lock_nested+0x168/0x1d0 kernel/locking/rtmutex_api.c:559
 blk_debugfs_lock_nomemsave block/blk.h:758 [inline]
 blk_debugfs_lock block/blk.h:770 [inline]
 blk_trace_setup+0x2d3/0x520 kernel/trace/blktrace.c:788
 blk_trace_ioctl+0x37f/0x920 kernel/trace/blktrace.c:937
 blkdev_ioctl+0x4c4/0x750 block/ioctl.c:786
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xff/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f58d148ce59
RSP: 002b:00007f58d0aee028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f58d1705fa0 RCX: 00007f58d148ce59
RDX: 0000200000000000 RSI: 00000000c0481273 RDI: 0000000000000003
RBP: 00007f58d1522d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f58d1706038 R14: 00007f58d1705fa0 R15: 00007fff8a90fdf8
 </TASK>

Showing all locks held in the system:
4 locks held by pr/legacy/17:
 #0: ffffffff8dfba4e0 (console_lock){+.+.}-{0:0}, at: legacy_kthread_func+0x1a3/0x250 kernel/printk/printk.c:3711
 #1: ffffffff8dea1dd8 (console_srcu){....}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:305 [inline]
 #1: ffffffff8dea1dd8 (console_srcu){....}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:428 [inline]
 #1: ffffffff8dea1dd8 (console_srcu){....}-{0:0}, at: console_srcu_read_lock kernel/printk/printk.c:291 [inline]
 #1: ffffffff8dea1dd8 (console_srcu){....}-{0:0}, at: console_flush_one_record+0xfa/0xb90 kernel/printk/printk.c:3246
 #2: ffffffff99b6ead8 (&port_lock_key){+.+.}-{3:3}, at: spin_lock include/linux/spinlock_rt.h:45 [inline]
 #2: ffffffff99b6ead8 (&port_lock_key){+.+.}-{3:3}, at: uart_port_lock_irqsave include/linux/serial_core.h:717 [inline]
 #2: ffffffff99b6ead8 (&port_lock_key){+.+.}-{3:3}, at: serial8250_console_write+0x179/0x1b90 drivers/tty/serial/8250/8250_port.c:3316
 #3: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #3: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #3: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: __rt_spin_lock kernel/locking/spinlock_rt.c:50 [inline]
 #3: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rt_spin_lock+0x1e0/0x400 kernel/locking/spinlock_rt.c:57
6 locks held by ktimers/1/30:
 #0: ffffffff8de5f380 (local_bh){.+.+}-{1:3}, at: __local_bh_disable_ip+0x3c/0x420 kernel/softirq.c:163
 #1: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: psi_task_switch+0x53/0x880 kernel/sched/psi.c:933
 #2: ffff8880b8728478 (&base->softirq_expiry_lock){+...}-{3:3}, at: rt_mutex_slowunlock+0xbf/0x8b0 kernel/locking/rtmutex.c:1430
 #3: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #3: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #3: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: __rt_spin_lock kernel/locking/spinlock_rt.c:50 [inline]
 #3: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rt_spin_lock+0x1e0/0x400 kernel/locking/spinlock_rt.c:57
 #4: ffff8880b87283d8 (hrtimer_bases.lock){-...}-{2:2}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #4: ffff8880b87283d8 (hrtimer_bases.lock){-...}-{2:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #4: ffff8880b87283d8 (hrtimer_bases.lock){-...}-{2:2}, at: class_rcu_constructor include/linux/rcupdate.h:1181 [inline]
 #4: ffff8880b87283d8 (hrtimer_bases.lock){-...}-{2:2}, at: unwind_next_frame+0xa6/0x2550 arch/x86/kernel/unwind_orc.c:495
 #5: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rtlock_slowlock kernel/locking/rtmutex.c:1918 [inline]
 #5: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rtlock_lock kernel/locking/spinlock_rt.c:43 [inline]
 #5: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: __rt_spin_lock kernel/locking/spinlock_rt.c:49 [inline]
 #5: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rt_spin_lock+0x157/0x400 kernel/locking/spinlock_rt.c:57
1 lock held by khungtaskd/38:
 #0: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #0: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #0: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6777
2 locks held by kworker/u8:4/68:
 #0: ffff88813fe84138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x897/0x1630 kernel/workqueue.c:3281
 #1: ffffc9000153fc40 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x8be/0x1630 kernel/workqueue.c:3282
3 locks held by kworker/u8:8/1033:
 #0: ffff88813fe84138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x897/0x1630 kernel/workqueue.c:3281
 #1: ffffc90005cf7c40 ((work_completion)(&rdev->wiphy_work)){+.+.}-{0:0}, at: process_one_work+0x8be/0x1630 kernel/workqueue.c:3282
 #2: ffff88807f9a08d8 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6875 [inline]
 #2: ffff88807f9a08d8 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: cfg80211_wiphy_work+0xb4/0x460 net/wireless/core.c:524
6 locks held by kworker/u8:9/1041:
 #0: ffff88813fe84138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x897/0x1630 kernel/workqueue.c:3281
 #1: ffffc90005d77c40 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_one_work+0x8be/0x1630 kernel/workqueue.c:3282
 #2: ffff888039efc310 (&devlink->lock_key#6){+.+.}-{4:4}, at: nsim_dev_trap_report_work+0x57/0xbd0 drivers/net/netdevsim/dev.c:909
 #3: ffff888045931520 (&nsim_trap_data->trap_lock){+.+.}-{3:3}, at: spin_lock include/linux/spinlock_rt.h:45 [inline]
 #3: ffff888045931520 (&nsim_trap_data->trap_lock){+.+.}-{3:3}, at: nsim_dev_trap_report drivers/net/netdevsim/dev.c:862 [inline]
 #3: ffff888045931520 (&nsim_trap_data->trap_lock){+.+.}-{3:3}, at: nsim_dev_trap_report_work+0x1ad/0xbd0 drivers/net/netdevsim/dev.c:922
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: __rt_spin_lock kernel/locking/spinlock_rt.c:50 [inline]
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rt_spin_lock+0x1e0/0x400 kernel/locking/spinlock_rt.c:57
 #5: ffff8880b8636e10 ((crngs.lock)){+.+.}-{3:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #5: ffff8880b8636e10 ((crngs.lock)){+.+.}-{3:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #5: ffff8880b8636e10 ((crngs.lock)){+.+.}-{3:3}, at: __rt_spin_lock kernel/locking/spinlock_rt.c:50 [inline]
 #5: ffff8880b8636e10 ((crngs.lock)){+.+.}-{3:3}, at: rt_spin_lock+0x1e0/0x400 kernel/locking/spinlock_rt.c:57
6 locks held by kworker/u8:10/1171:
 #0: ffff88813fe84138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x897/0x1630 kernel/workqueue.c:3281
 #1: ffffc900061f7c40 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_one_work+0x8be/0x1630 kernel/workqueue.c:3282
 #2: ffff88805f7c6310 (&devlink->lock_key#2){+.+.}-{4:4}, at: nsim_dev_trap_report_work+0x57/0xbd0 drivers/net/netdevsim/dev.c:909
 #3: ffff888043871120 (&nsim_trap_data->trap_lock){+.+.}-{3:3}, at: spin_lock include/linux/spinlock_rt.h:45 [inline]
 #3: ffff888043871120 (&nsim_trap_data->trap_lock){+.+.}-{3:3}, at: nsim_dev_trap_report drivers/net/netdevsim/dev.c:862 [inline]
 #3: ffff888043871120 (&nsim_trap_data->trap_lock){+.+.}-{3:3}, at: nsim_dev_trap_report_work+0x1ad/0xbd0 drivers/net/netdevsim/dev.c:922
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: __rt_spin_lock kernel/locking/spinlock_rt.c:50 [inline]
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rt_spin_lock+0x1e0/0x400 kernel/locking/spinlock_rt.c:57
 #5: ffff8880b8636e10 ((crngs.lock)){+.+.}-{3:3}, at: spin_lock include/linux/spinlock_rt.h:45 [inline]
 #5: ffff8880b8636e10 ((crngs.lock)){+.+.}-{3:3}, at: crng_make_state+0x162/0x5d0 drivers/char/random.c:358
3 locks held by kworker/u8:11/1172:
 #0: ffff88813fe84138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x897/0x1630 kernel/workqueue.c:3281
 #1: ffffc900060a7c40 ((work_completion)(&rdev->wiphy_work)){+.+.}-{0:0}, at: process_one_work+0x8be/0x1630 kernel/workqueue.c:3282
 #2: ffff88806b0908d8 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6875 [inline]
 #2: ffff88806b0908d8 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: cfg80211_wiphy_work+0xb4/0x460 net/wireless/core.c:524
6 locks held by kworker/u8:12/1183:
 #0: ffff88813fe84138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x897/0x1630 kernel/workqueue.c:3281
 #1: ffffc90006217c40 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_one_work+0x8be/0x1630 kernel/workqueue.c:3282
 #2: ffff888038e20310 (&devlink->lock_key#5){+.+.}-{4:4}, at: nsim_dev_trap_report_work+0x57/0xbd0 drivers/net/netdevsim/dev.c:909
 #3: ffff88805b066120 (&nsim_trap_data->trap_lock){+.+.}-{3:3}, at: spin_lock include/linux/spinlock_rt.h:45 [inline]
 #3: ffff88805b066120 (&nsim_trap_data->trap_lock){+.+.}-{3:3}, at: nsim_dev_trap_report drivers/net/netdevsim/dev.c:862 [inline]
 #3: ffff88805b066120 (&nsim_trap_data->trap_lock){+.+.}-{3:3}, at: nsim_dev_trap_report_work+0x1ad/0xbd0 drivers/net/netdevsim/dev.c:922
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: __rt_spin_lock kernel/locking/spinlock_rt.c:50 [inline]
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rt_spin_lock+0x1e0/0x400 kernel/locking/spinlock_rt.c:57
 #5: ffff8880b8636e10 ((crngs.lock)){+.+.}-{3:3}, at: spin_lock include/linux/spinlock_rt.h:45 [inline]
 #5: ffff8880b8636e10 ((crngs.lock)){+.+.}-{3:3}, at: crng_make_state+0x162/0x5d0 drivers/char/random.c:358
2 locks held by kworker/u8:14/1432:
 #0: ffff88813fe84138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x897/0x1630 kernel/workqueue.c:3281
 #1: ffffc90006a47c40 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x8be/0x1630 kernel/workqueue.c:3282
2 locks held by kworker/u8:15/1458:
 #0: ffff888032ba4938 ((wq_completion)bat_events){+.+.}-{0:0}, at: process_one_work+0x897/0x1630 kernel/workqueue.c:3281
 #1: ffffc90006ce7c40 ((work_completion)(&(&bat_priv->tt.work)->work)){+.+.}-{0:0}, at: process_one_work+0x8be/0x1630 kernel/workqueue.c:3282
4 locks held by kworker/u9:1/4930:
 #0: ffff888098131138 ((wq_completion)hci6#2){+.+.}-{0:0}, at: process_one_work+0x897/0x1630 kernel/workqueue.c:3281
 #1: ffffc9000e7cfc40 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x8be/0x1630 kernel/workqueue.c:3282
 #2: ffff88802d2180b0 (&hdev->lock){+.+.}-{4:4}, at: le_conn_complete_evt+0xa5/0x16b0 net/bluetooth/hci_event.c:5732
 #3: ffff88801badb238 (&root->kernfs_rwsem){++++}-{4:4}, at: kernfs_add_one+0x41/0x5d0 fs/kernfs/dir.c:826
1 lock held by klogd/4970:
 #0: ffffffff8e10d270 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:187 [inline]
 #0: ffffffff8e10d270 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_read_lock+0x27/0x60 include/linux/srcu.h:294
4 locks held by udevd/4981:
 #0: ffff8880232086e0 (&type->i_mutex_dir_key#4){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:1044 [inline]
 #0: ffff8880232086e0 (&type->i_mutex_dir_key#4){++++}-{4:4}, at: open_last_lookups fs/namei.c:4610 [inline]
 #0: ffff8880232086e0 (&type->i_mutex_dir_key#4){++++}-{4:4}, at: path_openat+0xb4f/0x38a0 fs/namei.c:4855
 #1: ffff88801badb238 (&root->kernfs_rwsem){++++}-{4:4}, at: kernfs_iop_lookup+0x5f/0x320 fs/kernfs/dir.c:1260
 #2: ffffffff8e10d270 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:187 [inline]
 #2: ffffffff8e10d270 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_read_lock+0x27/0x60 include/linux/srcu.h:294
 #3: ffff8880b8742c18 (&pcp->lock){+.+.}-{3:3}, at: __free_frozen_pages+0x8d3/0x11b0 mm/page_alloc.c:2971
2 locks held by getty/5369:
 #0: ffff8880362ca0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc90003cc62e0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x462/0x13a0 drivers/tty/n_tty.c:2211
4 locks held by kworker/u9:3/5769:
 #0: ffff88802b9f9938 ((wq_completion)hci7#2){+.+.}-{0:0}, at: process_one_work+0x897/0x1630 kernel/workqueue.c:3281
 #1: ffffc9000400fc40 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x8be/0x1630 kernel/workqueue.c:3282
 #2: ffff888096b5c0b0 (&hdev->lock){+.+.}-{4:4}, at: hci_conn_complete_evt+0xcd/0x1290 net/bluetooth/hci_event.c:3117
 #3: ffff88801badb238 (&root->kernfs_rwsem){++++}-{4:4}, at: kernfs_add_one+0x41/0x5d0 fs/kernfs/dir.c:826
3 locks held by kworker/1:6/5774:
 #0: ffff88823be1e138 ((wq_completion)mm_percpu_wq){+.+.}-{0:0}, at: process_one_work+0x897/0x1630 kernel/workqueue.c:3281
 #1: ffffc90003eafc40 ((work_completion)(&(({ do { const void *__vpp_verify = (typeof((&vmstat_work) + 0))((void *)0); (void)__vpp_verify; } while (0); ((typeof((__typeof_unqual__(*((&vmstat_work))) *)(( unsigned long)((&vmstat_work)))))((unsigned long)((__typeof_unqual__(*((&vmstat_work))) *)(( unsigned long)((&vmstat_work)))) + (((__per_cpu_offset[(cpu)]))))); }))->work)){+.+.}-{0:0}, at: process_one_work+0x8be/0x1630 kernel/workqueue.c:3282
 #2: ffff8880b8742c18 (&pcp->lock){+.+.}-{3:3}, at: spin_lock include/linux/spinlock_rt.h:45 [inline]
 #2: ffff8880b8742c18 (&pcp->lock){+.+.}-{3:3}, at: decay_pcp_high+0x11e/0x2a0 mm/page_alloc.c:2582
3 locks held by syz.0.17/6003:
 #0: ffff888025c0b1d0 (&q->debugfs_mutex){+.+.}-{4:4}, at: blk_debugfs_lock_nomemsave block/blk.h:758 [inline]
 #0: ffff888025c0b1d0 (&q->debugfs_mutex){+.+.}-{4:4}, at: blk_debugfs_lock block/blk.h:770 [inline]
 #0: ffff888025c0b1d0 (&q->debugfs_mutex){+.+.}-{4:4}, at: blk_trace_setup+0x2d3/0x520 kernel/trace/blktrace.c:788
 #1: ffffffff8e028bb8 (relay_channels_mutex){+.+.}-{4:4}, at: relay_open+0x3b8/0x920 kernel/relay.c:515
 #2: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #2: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #2: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: __rt_spin_trylock kernel/locking/spinlock_rt.c:110 [inline]
 #2: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rt_spin_trylock+0x10c/0x2b0 kernel/locking/spinlock_rt.c:118
1 lock held by syz.1.18/6034:
 #0: ffff888025c0b1d0 (&q->debugfs_mutex){+.+.}-{4:4}, at: blk_debugfs_lock_nomemsave block/blk.h:758 [inline]
 #0: ffff888025c0b1d0 (&q->debugfs_mutex){+.+.}-{4:4}, at: blk_debugfs_lock block/blk.h:770 [inline]
 #0: ffff888025c0b1d0 (&q->debugfs_mutex){+.+.}-{4:4}, at: blk_trace_setup+0x2d3/0x520 kernel/trace/blktrace.c:788
1 lock held by syz.2.19/6037:
 #0: ffff888025c0b1d0 (&q->debugfs_mutex){+.+.}-{4:4}, at: blk_debugfs_lock_nomemsave block/blk.h:758 [inline]
 #0: ffff888025c0b1d0 (&q->debugfs_mutex){+.+.}-{4:4}, at: blk_debugfs_lock block/blk.h:770 [inline]
 #0: ffff888025c0b1d0 (&q->debugfs_mutex){+.+.}-{4:4}, at: blk_trace_setup+0x2d3/0x520 kernel/trace/blktrace.c:788
1 lock held by syz.3.20/6044:
 #0: ffff888025c0b1d0 (&q->debugfs_mutex){+.+.}-{4:4}, at: blk_debugfs_lock_nomemsave block/blk.h:758 [inline]
 #0: ffff888025c0b1d0 (&q->debugfs_mutex){+.+.}-{4:4}, at: blk_debugfs_lock block/blk.h:770 [inline]
 #0: ffff888025c0b1d0 (&q->debugfs_mutex){+.+.}-{4:4}, at: blk_trace_setup+0x2d3/0x520 kernel/trace/blktrace.c:788
1 lock held by syz.4.21/6050:
 #0: ffff888025c0b1d0 (&q->debugfs_mutex){+.+.}-{4:4}, at: blk_debugfs_lock_nomemsave block/blk.h:758 [inline]
 #0: ffff888025c0b1d0 (&q->debugfs_mutex){+.+.}-{4:4}, at: blk_debugfs_lock block/blk.h:770 [inline]
 #0: ffff888025c0b1d0 (&q->debugfs_mutex){+.+.}-{4:4}, at: blk_trace_setup+0x2d3/0x520 kernel/trace/blktrace.c:788
6 locks held by kworker/u8:20/6085:
 #0: ffff88813fe84138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x897/0x1630 kernel/workqueue.c:3281
 #1: ffffc9000451fc40 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_one_work+0x8be/0x1630 kernel/workqueue.c:3282
 #2: ffff88803dd04310 (&devlink->lock_key#3){+.+.}-{4:4}, at: nsim_dev_trap_report_work+0x57/0xbd0 drivers/net/netdevsim/dev.c:909
 #3: ffff8880461e9d20 (&nsim_trap_data->trap_lock){+.+.}-{3:3}, at: spin_lock include/linux/spinlock_rt.h:45 [inline]
 #3: ffff8880461e9d20 (&nsim_trap_data->trap_lock){+.+.}-{3:3}, at: nsim_dev_trap_report drivers/net/netdevsim/dev.c:862 [inline]
 #3: ffff8880461e9d20 (&nsim_trap_data->trap_lock){+.+.}-{3:3}, at: nsim_dev_trap_report_work+0x1ad/0xbd0 drivers/net/netdevsim/dev.c:922
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: __rt_spin_lock kernel/locking/spinlock_rt.c:50 [inline]
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rt_spin_lock+0x1e0/0x400 kernel/locking/spinlock_rt.c:57
 #5: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #5: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #5: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: class_rcu_constructor include/linux/rcupdate.h:1181 [inline]
 #5: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: unwind_next_frame+0xa6/0x2550 arch/x86/kernel/unwind_orc.c:495
2 locks held by syz-executor/6134:
 #0: ffff888097328f80 (&hdev->req_lock){+.+.}-{4:4}, at: hci_dev_do_close net/bluetooth/hci_core.c:500 [inline]
 #0: ffff888097328f80 (&hdev->req_lock){+.+.}-{4:4}, at: hci_unregister_dev+0x212/0x5a0 net/bluetooth/hci_core.c:2716
 #1: ffff8880973280b0 (&hdev->lock){+.+.}-{4:4}, at: hci_dev_close_sync+0x640/0x10e0 net/bluetooth/hci_sync.c:5356
3 locks held by syz-executor/6136:
 #0: ffff8880341f6ed8 (&sb->s_type->i_mutex_key#4/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:1074 [inline]
 #0: ffff8880341f6ed8 (&sb->s_type->i_mutex_key#4/1){+.+.}-{4:4}, at: __start_dirop fs/namei.c:2914 [inline]
 #0: ffff8880341f6ed8 (&sb->s_type->i_mutex_key#4/1){+.+.}-{4:4}, at: start_dirop+0x4f/0x90 fs/namei.c:2938
 #1: ffffffff8e10d270 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:187 [inline]
 #1: ffffffff8e10d270 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_read_lock+0x27/0x60 include/linux/srcu.h:294
 #2: ffff88813fffbb98 (&zone->lock){+.+.}-{3:3}, at: spin_lock include/linux/spinlock_rt.h:45 [inline]
 #2: ffff88813fffbb98 (&zone->lock){+.+.}-{3:3}, at: free_one_page+0x43/0x250 mm/page_alloc.c:1557
8 locks held by kworker/u8:21/6158:
 #0: ffff88813fe84138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x897/0x1630 kernel/workqueue.c:3281
 #1: ffffc9000468fc40 ((work_completion)(&rdev->wiphy_work)){+.+.}-{0:0}, at: process_one_work+0x8be/0x1630 kernel/workqueue.c:3282
 #2: ffff888070c808d8 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6875 [inline]
 #2: ffff888070c808d8 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: cfg80211_wiphy_work+0xb4/0x460 net/wireless/core.c:524
 #3: ffffffff8de5f380 (local_bh){.+.+}-{1:3}, at: __local_bh_disable_ip+0x3c/0x420 kernel/softirq.c:163
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: __local_bh_disable_ip+0x3c/0x420 kernel/softirq.c:163
 #5: ffff888070c80228 (&rdev->bss_lock){+...}-{3:3}, at: spin_lock_bh include/linux/spinlock_rt.h:90 [inline]
 #5: ffff888070c80228 (&rdev->bss_lock){+...}-{3:3}, at: cfg80211_inform_single_bss_data+0xbbf/0x1b80 net/wireless/scan.c:2367
 #6: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #6: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #6: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: __rt_spin_lock kernel/locking/spinlock_rt.c:50 [inline]
 #6: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rt_spin_lock+0x1e0/0x400 kernel/locking/spinlock_rt.c:57
 #7: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #7: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #7: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: class_rcu_constructor include/linux/rcupdate.h:1181 [inline]
 #7: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: unwind_next_frame+0xa6/0x2550 arch/x86/kernel/unwind_orc.c:495
2 locks held by syz-executor/6194:
 #0: ffffffff8e13a680 (namespace_sem){++++}-{4:4}, at: namespace_lock fs/namespace.c:1729 [inline]
 #0: ffffffff8e13a680 (namespace_sem){++++}-{4:4}, at: class_namespace_excl_constructor fs/namespace.c:90 [inline]
 #0: ffffffff8e13a680 (namespace_sem){++++}-{4:4}, at: copy_mnt_ns+0x336/0xcb0 fs/namespace.c:4249
 #1: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #1: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #1: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: class_rcu_constructor include/linux/rcupdate.h:1181 [inline]
 #1: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: unwind_next_frame+0xa6/0x2550 arch/x86/kernel/unwind_orc.c:495
1 lock held by syz-execut[  271.895926][   T38] 1 lock held by syz-executor/6195:
 #0: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #0: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #0: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: path_init+0x12d/0x14d0 fs/namei.c:2685
2 locks held by modprobe/6196:
 #0: ffff888085492448 (vm_lock){++++}-{0:0}, at: lock_vma_under_rcu+0x1d1/0x500 mm/mmap_lock.c:310
 #1: ffffffff8e10d270 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:187 [inline]
 #1: ffffffff8e10d270 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_read_lock+0x27/0x60 include/linux/srcu.h:294
3 locks held by syz-executor/6197:
 #0: ffff88803422e820 (&sb->s_type->i_mutex_key#12){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:1044 [inline]
 #0: ffff88803422e820 (&sb->s_type->i_mutex_key#12){++++}-{4:4}, at: lookup_slow+0x46/0x70 fs/namei.c:1931
 #1: ffff88801baf8658 (&n->list_lock){+.+.}-{3:3}, at: spin_lock include/linux/spinlock_rt.h:45 [inline]
 #1: ffff88801baf8658 (&n->list_lock){+.+.}-{3:3}, at: get_partial_node_bulk mm/slub.c:3752 [inline]
 #1: ffff88801baf8658 (&n->list_lock){+.+.}-{3:3}, at: __refill_objects_node+0x89/0x620 mm/slub.c:7164
 #2: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #2: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #2: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: __rt_spin_lock kernel/locking/spinlock_rt.c:50 [inline]
 #2: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rt_spin_lock+0x1e0/0x400 kernel/locking/spinlock_rt.c:57
3 locks held by syz-executor/6200:
 #0: ffff888097fb6bc8 (vm_lock){++++}-{0:0}, at: lock_vma_under_rcu+0x1d1/0x500 mm/mmap_lock.c:310
 #1: ffff88803704aab0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_trylock+0x1f/0x70 include/linux/mmap_lock.h:611
 #2: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #2: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #2: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: class_rcu_constructor include/linux/rcupdate.h:1181 [inline]
 #2: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: unwind_next_frame+0xa6/0x2550 arch/x86/kernel/unwind_orc.c:495

=============================================

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 38 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
 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+0xfd3/0x1030 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
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 3 Comm: pool_workqueue_ Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:remove_class_from_lock_chains kernel/locking/lockdep.c:6237 [inline]
RIP: 0010:zap_class+0xc0/0x340 kernel/locking/lockdep.c:6283
Code: 45 31 e4 48 c7 c5 30 d8 77 93 eb 10 49 ff c4 49 81 fc 00 00 08 00 0f 84 a4 01 00 00 4e 8b 2c e5 c0 d3 33 93 4d 85 ed 0f 94 c0 <49> 83 c5 f8 0f 94 c1 08 c1 75 d7 45 8b 75 00 41 f6 c6 fc 0f 84 e1
RSP: 0018:ffffc90000087c50 EFLAGS: 00000046
RAX: 0000000000085901 RBX: ffffffff92898606 RCX: 0000000000085901
RDX: ffffffff9333d3b8 RSI: 0000000000000008 RDI: 00000000000fbedb
RBP: ffffffff9377d830 R08: ffffffff81ae0ea8 R09: ffffffff8dfc8240
R10: dffffc0000000000 R11: fffffbfff1f1597f R12: 000000000003fba6
R13: 0000000000000000 R14: 000000000008593b R15: 0000000000000bc3
FS:  0000000000000000(0000) GS:ffff888125f1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa5b3b9635d CR3: 000000009d536000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __lockdep_free_key_range kernel/locking/lockdep.c:6409 [inline]
 lockdep_unregister_key+0x1c3/0x350 kernel/locking/lockdep.c:6611
 wq_unregister_lockdep kernel/workqueue.c:4933 [inline]
 pwq_release_workfn+0x6ce/0x8c0 kernel/workqueue.c:5229
 kthread_worker_fn+0x4ee/0xb20 kernel/kthread.c:1025
 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
 </TASK>

final repro crashed as (corrupted=false):
INFO: task syz.1.18:6034 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.18        state:D stack:27544 pid:6034  tgid:6033  ppid:5759   task_flags:0x480040 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5396 [inline]
 __schedule+0x16f9/0x5500 kernel/sched/core.c:7197
 __schedule_loop kernel/sched/core.c:7276 [inline]
 rt_mutex_schedule+0x76/0xf0 kernel/sched/core.c:7572
 rt_mutex_slowlock_block+0x508/0x680 kernel/locking/rtmutex.c:1667
 __rt_mutex_slowlock kernel/locking/rtmutex.c:1744 [inline]
 __rt_mutex_slowlock_locked kernel/locking/rtmutex.c:1784 [inline]
 rt_mutex_slowlock+0x2dc/0x780 kernel/locking/rtmutex.c:1824
 __rt_mutex_lock kernel/locking/rtmutex.c:1839 [inline]
 __mutex_lock_common kernel/locking/rtmutex_api.c:541 [inline]
 mutex_lock_nested+0x168/0x1d0 kernel/locking/rtmutex_api.c:559
 blk_debugfs_lock_nomemsave block/blk.h:758 [inline]
 blk_debugfs_lock block/blk.h:770 [inline]
 blk_trace_setup+0x2d3/0x520 kernel/trace/blktrace.c:788
 blk_trace_ioctl+0x37f/0x920 kernel/trace/blktrace.c:937
 blkdev_ioctl+0x4c4/0x750 block/ioctl.c:786
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xff/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc73042ce59
RSP: 002b:00007fc72fa8e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fc7306a5fa0 RCX: 00007fc73042ce59
RDX: 0000200000000000 RSI: 00000000c0481273 RDI: 0000000000000003
RBP: 00007fc7304c2d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc7306a6038 R14: 00007fc7306a5fa0 R15: 00007ffff6c811e8
 </TASK>
INFO: task syz.2.19:6037 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.19        state:D stack:27296 pid:6037  tgid:6036  ppid:5761   task_flags:0x480040 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5396 [inline]
 __schedule+0x16f9/0x5500 kernel/sched/core.c:7197
 __schedule_loop kernel/sched/core.c:7276 [inline]
 rt_mutex_schedule+0x76/0xf0 kernel/sched/core.c:7572
 rt_mutex_slowlock_block+0x508/0x680 kernel/locking/rtmutex.c:1667
 __rt_mutex_slowlock kernel/locking/rtmutex.c:1744 [inline]
 __rt_mutex_slowlock_locked kernel/locking/rtmutex.c:1784 [inline]
 rt_mutex_slowlock+0x2dc/0x780 kernel/locking/rtmutex.c:1824
 __rt_mutex_lock kernel/locking/rtmutex.c:1839 [inline]
 __mutex_lock_common kernel/locking/rtmutex_api.c:541 [inline]
 mutex_lock_nested+0x168/0x1d0 kernel/locking/rtmutex_api.c:559
 blk_debugfs_lock_nomemsave block/blk.h:758 [inline]
 blk_debugfs_lock block/blk.h:770 [inline]
 blk_trace_setup+0x2d3/0x520 kernel/trace/blktrace.c:788
 blk_trace_ioctl+0x37f/0x920 kernel/trace/blktrace.c:937
 blkdev_ioctl+0x4c4/0x750 block/ioctl.c:786
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xff/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f58d148ce59
RSP: 002b:00007f58d0aee028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f58d1705fa0 RCX: 00007f58d148ce59
RDX: 0000200000000000 RSI: 00000000c0481273 RDI: 0000000000000003
RBP: 00007f58d1522d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f58d1706038 R14: 00007f58d1705fa0 R15: 00007fff8a90fdf8
 </TASK>

Showing all locks held in the system:
4 locks held by pr/legacy/17:
 #0: ffffffff8dfba4e0 (console_lock){+.+.}-{0:0}, at: legacy_kthread_func+0x1a3/0x250 kernel/printk/printk.c:3711
 #1: ffffffff8dea1dd8 (console_srcu){....}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:305 [inline]
 #1: ffffffff8dea1dd8 (console_srcu){....}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:428 [inline]
 #1: ffffffff8dea1dd8 (console_srcu){....}-{0:0}, at: console_srcu_read_lock kernel/printk/printk.c:291 [inline]
 #1: ffffffff8dea1dd8 (console_srcu){....}-{0:0}, at: console_flush_one_record+0xfa/0xb90 kernel/printk/printk.c:3246
 #2: ffffffff99b6ead8 (&port_lock_key){+.+.}-{3:3}, at: spin_lock include/linux/spinlock_rt.h:45 [inline]
 #2: ffffffff99b6ead8 (&port_lock_key){+.+.}-{3:3}, at: uart_port_lock_irqsave include/linux/serial_core.h:717 [inline]
 #2: ffffffff99b6ead8 (&port_lock_key){+.+.}-{3:3}, at: serial8250_console_write+0x179/0x1b90 drivers/tty/serial/8250/8250_port.c:3316
 #3: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #3: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #3: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: __rt_spin_lock kernel/locking/spinlock_rt.c:50 [inline]
 #3: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rt_spin_lock+0x1e0/0x400 kernel/locking/spinlock_rt.c:57
6 locks held by ktimers/1/30:
 #0: ffffffff8de5f380 (local_bh){.+.+}-{1:3}, at: __local_bh_disable_ip+0x3c/0x420 kernel/softirq.c:163
 #1: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: psi_task_switch+0x53/0x880 kernel/sched/psi.c:933
 #2: ffff8880b8728478 (&base->softirq_expiry_lock){+...}-{3:3}, at: rt_mutex_slowunlock+0xbf/0x8b0 kernel/locking/rtmutex.c:1430
 #3: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #3: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #3: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: __rt_spin_lock kernel/locking/spinlock_rt.c:50 [inline]
 #3: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rt_spin_lock+0x1e0/0x400 kernel/locking/spinlock_rt.c:57
 #4: ffff8880b87283d8 (hrtimer_bases.lock){-...}-{2:2}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #4: ffff8880b87283d8 (hrtimer_bases.lock){-...}-{2:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #4: ffff8880b87283d8 (hrtimer_bases.lock){-...}-{2:2}, at: class_rcu_constructor include/linux/rcupdate.h:1181 [inline]
 #4: ffff8880b87283d8 (hrtimer_bases.lock){-...}-{2:2}, at: unwind_next_frame+0xa6/0x2550 arch/x86/kernel/unwind_orc.c:495
 #5: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rtlock_slowlock kernel/locking/rtmutex.c:1918 [inline]
 #5: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rtlock_lock kernel/locking/spinlock_rt.c:43 [inline]
 #5: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: __rt_spin_lock kernel/locking/spinlock_rt.c:49 [inline]
 #5: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rt_spin_lock+0x157/0x400 kernel/locking/spinlock_rt.c:57
1 lock held by khungtaskd/38:
 #0: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #0: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #0: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6777
2 locks held by kworker/u8:4/68:
 #0: ffff88813fe84138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x897/0x1630 kernel/workqueue.c:3281
 #1: ffffc9000153fc40 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x8be/0x1630 kernel/workqueue.c:3282
3 locks held by kworker/u8:8/1033:
 #0: ffff88813fe84138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x897/0x1630 kernel/workqueue.c:3281
 #1: ffffc90005cf7c40 ((work_completion)(&rdev->wiphy_work)){+.+.}-{0:0}, at: process_one_work+0x8be/0x1630 kernel/workqueue.c:3282
 #2: ffff88807f9a08d8 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6875 [inline]
 #2: ffff88807f9a08d8 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: cfg80211_wiphy_work+0xb4/0x460 net/wireless/core.c:524
6 locks held by kworker/u8:9/1041:
 #0: ffff88813fe84138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x897/0x1630 kernel/workqueue.c:3281
 #1: ffffc90005d77c40 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_one_work+0x8be/0x1630 kernel/workqueue.c:3282
 #2: ffff888039efc310 (&devlink->lock_key#6){+.+.}-{4:4}, at: nsim_dev_trap_report_work+0x57/0xbd0 drivers/net/netdevsim/dev.c:909
 #3: ffff888045931520 (&nsim_trap_data->trap_lock){+.+.}-{3:3}, at: spin_lock include/linux/spinlock_rt.h:45 [inline]
 #3: ffff888045931520 (&nsim_trap_data->trap_lock){+.+.}-{3:3}, at: nsim_dev_trap_report drivers/net/netdevsim/dev.c:862 [inline]
 #3: ffff888045931520 (&nsim_trap_data->trap_lock){+.+.}-{3:3}, at: nsim_dev_trap_report_work+0x1ad/0xbd0 drivers/net/netdevsim/dev.c:922
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: __rt_spin_lock kernel/locking/spinlock_rt.c:50 [inline]
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rt_spin_lock+0x1e0/0x400 kernel/locking/spinlock_rt.c:57
 #5: ffff8880b8636e10 ((crngs.lock)){+.+.}-{3:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #5: ffff8880b8636e10 ((crngs.lock)){+.+.}-{3:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #5: ffff8880b8636e10 ((crngs.lock)){+.+.}-{3:3}, at: __rt_spin_lock kernel/locking/spinlock_rt.c:50 [inline]
 #5: ffff8880b8636e10 ((crngs.lock)){+.+.}-{3:3}, at: rt_spin_lock+0x1e0/0x400 kernel/locking/spinlock_rt.c:57
6 locks held by kworker/u8:10/1171:
 #0: ffff88813fe84138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x897/0x1630 kernel/workqueue.c:3281
 #1: ffffc900061f7c40 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_one_work+0x8be/0x1630 kernel/workqueue.c:3282
 #2: ffff88805f7c6310 (&devlink->lock_key#2){+.+.}-{4:4}, at: nsim_dev_trap_report_work+0x57/0xbd0 drivers/net/netdevsim/dev.c:909
 #3: ffff888043871120 (&nsim_trap_data->trap_lock){+.+.}-{3:3}, at: spin_lock include/linux/spinlock_rt.h:45 [inline]
 #3: ffff888043871120 (&nsim_trap_data->trap_lock){+.+.}-{3:3}, at: nsim_dev_trap_report drivers/net/netdevsim/dev.c:862 [inline]
 #3: ffff888043871120 (&nsim_trap_data->trap_lock){+.+.}-{3:3}, at: nsim_dev_trap_report_work+0x1ad/0xbd0 drivers/net/netdevsim/dev.c:922
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: __rt_spin_lock kernel/locking/spinlock_rt.c:50 [inline]
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rt_spin_lock+0x1e0/0x400 kernel/locking/spinlock_rt.c:57
 #5: ffff8880b8636e10 ((crngs.lock)){+.+.}-{3:3}, at: spin_lock include/linux/spinlock_rt.h:45 [inline]
 #5: ffff8880b8636e10 ((crngs.lock)){+.+.}-{3:3}, at: crng_make_state+0x162/0x5d0 drivers/char/random.c:358
3 locks held by kworker/u8:11/1172:
 #0: ffff88813fe84138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x897/0x1630 kernel/workqueue.c:3281
 #1: ffffc900060a7c40 ((work_completion)(&rdev->wiphy_work)){+.+.}-{0:0}, at: process_one_work+0x8be/0x1630 kernel/workqueue.c:3282
 #2: ffff88806b0908d8 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6875 [inline]
 #2: ffff88806b0908d8 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: cfg80211_wiphy_work+0xb4/0x460 net/wireless/core.c:524
6 locks held by kworker/u8:12/1183:
 #0: ffff88813fe84138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x897/0x1630 kernel/workqueue.c:3281
 #1: ffffc90006217c40 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_one_work+0x8be/0x1630 kernel/workqueue.c:3282
 #2: ffff888038e20310 (&devlink->lock_key#5){+.+.}-{4:4}, at: nsim_dev_trap_report_work+0x57/0xbd0 drivers/net/netdevsim/dev.c:909
 #3: ffff88805b066120 (&nsim_trap_data->trap_lock){+.+.}-{3:3}, at: spin_lock include/linux/spinlock_rt.h:45 [inline]
 #3: ffff88805b066120 (&nsim_trap_data->trap_lock){+.+.}-{3:3}, at: nsim_dev_trap_report drivers/net/netdevsim/dev.c:862 [inline]
 #3: ffff88805b066120 (&nsim_trap_data->trap_lock){+.+.}-{3:3}, at: nsim_dev_trap_report_work+0x1ad/0xbd0 drivers/net/netdevsim/dev.c:922
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: __rt_spin_lock kernel/locking/spinlock_rt.c:50 [inline]
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rt_spin_lock+0x1e0/0x400 kernel/locking/spinlock_rt.c:57
 #5: ffff8880b8636e10 ((crngs.lock)){+.+.}-{3:3}, at: spin_lock include/linux/spinlock_rt.h:45 [inline]
 #5: ffff8880b8636e10 ((crngs.lock)){+.+.}-{3:3}, at: crng_make_state+0x162/0x5d0 drivers/char/random.c:358
2 locks held by kworker/u8:14/1432:
 #0: ffff88813fe84138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x897/0x1630 kernel/workqueue.c:3281
 #1: ffffc90006a47c40 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x8be/0x1630 kernel/workqueue.c:3282
2 locks held by kworker/u8:15/1458:
 #0: ffff888032ba4938 ((wq_completion)bat_events){+.+.}-{0:0}, at: process_one_work+0x897/0x1630 kernel/workqueue.c:3281
 #1: ffffc90006ce7c40 ((work_completion)(&(&bat_priv->tt.work)->work)){+.+.}-{0:0}, at: process_one_work+0x8be/0x1630 kernel/workqueue.c:3282
4 locks held by kworker/u9:1/4930:
 #0: ffff888098131138 ((wq_completion)hci6#2){+.+.}-{0:0}, at: process_one_work+0x897/0x1630 kernel/workqueue.c:3281
 #1: ffffc9000e7cfc40 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x8be/0x1630 kernel/workqueue.c:3282
 #2: ffff88802d2180b0 (&hdev->lock){+.+.}-{4:4}, at: le_conn_complete_evt+0xa5/0x16b0 net/bluetooth/hci_event.c:5732
 #3: ffff88801badb238 (&root->kernfs_rwsem){++++}-{4:4}, at: kernfs_add_one+0x41/0x5d0 fs/kernfs/dir.c:826
1 lock held by klogd/4970:
 #0: ffffffff8e10d270 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:187 [inline]
 #0: ffffffff8e10d270 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_read_lock+0x27/0x60 include/linux/srcu.h:294
4 locks held by udevd/4981:
 #0: ffff8880232086e0 (&type->i_mutex_dir_key#4){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:1044 [inline]
 #0: ffff8880232086e0 (&type->i_mutex_dir_key#4){++++}-{4:4}, at: open_last_lookups fs/namei.c:4610 [inline]
 #0: ffff8880232086e0 (&type->i_mutex_dir_key#4){++++}-{4:4}, at: path_openat+0xb4f/0x38a0 fs/namei.c:4855
 #1: ffff88801badb238 (&root->kernfs_rwsem){++++}-{4:4}, at: kernfs_iop_lookup+0x5f/0x320 fs/kernfs/dir.c:1260
 #2: ffffffff8e10d270 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:187 [inline]
 #2: ffffffff8e10d270 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_read_lock+0x27/0x60 include/linux/srcu.h:294
 #3: ffff8880b8742c18 (&pcp->lock){+.+.}-{3:3}, at: __free_frozen_pages+0x8d3/0x11b0 mm/page_alloc.c:2971
2 locks held by getty/5369:
 #0: ffff8880362ca0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc90003cc62e0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x462/0x13a0 drivers/tty/n_tty.c:2211
4 locks held by kworker/u9:3/5769:
 #0: ffff88802b9f9938 ((wq_completion)hci7#2){+.+.}-{0:0}, at: process_one_work+0x897/0x1630 kernel/workqueue.c:3281
 #1: ffffc9000400fc40 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x8be/0x1630 kernel/workqueue.c:3282
 #2: ffff888096b5c0b0 (&hdev->lock){+.+.}-{4:4}, at: hci_conn_complete_evt+0xcd/0x1290 net/bluetooth/hci_event.c:3117
 #3: ffff88801badb238 (&root->kernfs_rwsem){++++}-{4:4}, at: kernfs_add_one+0x41/0x5d0 fs/kernfs/dir.c:826
3 locks held by kworker/1:6/5774:
 #0: ffff88823be1e138 ((wq_completion)mm_percpu_wq){+.+.}-{0:0}, at: process_one_work+0x897/0x1630 kernel/workqueue.c:3281
 #1: ffffc90003eafc40 ((work_completion)(&(({ do { const void *__vpp_verify = (typeof((&vmstat_work) + 0))((void *)0); (void)__vpp_verify; } while (0); ((typeof((__typeof_unqual__(*((&vmstat_work))) *)(( unsigned long)((&vmstat_work)))))((unsigned long)((__typeof_unqual__(*((&vmstat_work))) *)(( unsigned long)((&vmstat_work)))) + (((__per_cpu_offset[(cpu)]))))); }))->work)){+.+.}-{0:0}, at: process_one_work+0x8be/0x1630 kernel/workqueue.c:3282
 #2: ffff8880b8742c18 (&pcp->lock){+.+.}-{3:3}, at: spin_lock include/linux/spinlock_rt.h:45 [inline]
 #2: ffff8880b8742c18 (&pcp->lock){+.+.}-{3:3}, at: decay_pcp_high+0x11e/0x2a0 mm/page_alloc.c:2582
3 locks held by syz.0.17/6003:
 #0: ffff888025c0b1d0 (&q->debugfs_mutex){+.+.}-{4:4}, at: blk_debugfs_lock_nomemsave block/blk.h:758 [inline]
 #0: ffff888025c0b1d0 (&q->debugfs_mutex){+.+.}-{4:4}, at: blk_debugfs_lock block/blk.h:770 [inline]
 #0: ffff888025c0b1d0 (&q->debugfs_mutex){+.+.}-{4:4}, at: blk_trace_setup+0x2d3/0x520 kernel/trace/blktrace.c:788
 #1: ffffffff8e028bb8 (relay_channels_mutex){+.+.}-{4:4}, at: relay_open+0x3b8/0x920 kernel/relay.c:515
 #2: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #2: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #2: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: __rt_spin_trylock kernel/locking/spinlock_rt.c:110 [inline]
 #2: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rt_spin_trylock+0x10c/0x2b0 kernel/locking/spinlock_rt.c:118
1 lock held by syz.1.18/6034:
 #0: ffff888025c0b1d0 (&q->debugfs_mutex){+.+.}-{4:4}, at: blk_debugfs_lock_nomemsave block/blk.h:758 [inline]
 #0: ffff888025c0b1d0 (&q->debugfs_mutex){+.+.}-{4:4}, at: blk_debugfs_lock block/blk.h:770 [inline]
 #0: ffff888025c0b1d0 (&q->debugfs_mutex){+.+.}-{4:4}, at: blk_trace_setup+0x2d3/0x520 kernel/trace/blktrace.c:788
1 lock held by syz.2.19/6037:
 #0: ffff888025c0b1d0 (&q->debugfs_mutex){+.+.}-{4:4}, at: blk_debugfs_lock_nomemsave block/blk.h:758 [inline]
 #0: ffff888025c0b1d0 (&q->debugfs_mutex){+.+.}-{4:4}, at: blk_debugfs_lock block/blk.h:770 [inline]
 #0: ffff888025c0b1d0 (&q->debugfs_mutex){+.+.}-{4:4}, at: blk_trace_setup+0x2d3/0x520 kernel/trace/blktrace.c:788
1 lock held by syz.3.20/6044:
 #0: ffff888025c0b1d0 (&q->debugfs_mutex){+.+.}-{4:4}, at: blk_debugfs_lock_nomemsave block/blk.h:758 [inline]
 #0: ffff888025c0b1d0 (&q->debugfs_mutex){+.+.}-{4:4}, at: blk_debugfs_lock block/blk.h:770 [inline]
 #0: ffff888025c0b1d0 (&q->debugfs_mutex){+.+.}-{4:4}, at: blk_trace_setup+0x2d3/0x520 kernel/trace/blktrace.c:788
1 lock held by syz.4.21/6050:
 #0: ffff888025c0b1d0 (&q->debugfs_mutex){+.+.}-{4:4}, at: blk_debugfs_lock_nomemsave block/blk.h:758 [inline]
 #0: ffff888025c0b1d0 (&q->debugfs_mutex){+.+.}-{4:4}, at: blk_debugfs_lock block/blk.h:770 [inline]
 #0: ffff888025c0b1d0 (&q->debugfs_mutex){+.+.}-{4:4}, at: blk_trace_setup+0x2d3/0x520 kernel/trace/blktrace.c:788
6 locks held by kworker/u8:20/6085:
 #0: ffff88813fe84138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x897/0x1630 kernel/workqueue.c:3281
 #1: ffffc9000451fc40 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_one_work+0x8be/0x1630 kernel/workqueue.c:3282
 #2: ffff88803dd04310 (&devlink->lock_key#3){+.+.}-{4:4}, at: nsim_dev_trap_report_work+0x57/0xbd0 drivers/net/netdevsim/dev.c:909
 #3: ffff8880461e9d20 (&nsim_trap_data->trap_lock){+.+.}-{3:3}, at: spin_lock include/linux/spinlock_rt.h:45 [inline]
 #3: ffff8880461e9d20 (&nsim_trap_data->trap_lock){+.+.}-{3:3}, at: nsim_dev_trap_report drivers/net/netdevsim/dev.c:862 [inline]
 #3: ffff8880461e9d20 (&nsim_trap_data->trap_lock){+.+.}-{3:3}, at: nsim_dev_trap_report_work+0x1ad/0xbd0 drivers/net/netdevsim/dev.c:922
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: __rt_spin_lock kernel/locking/spinlock_rt.c:50 [inline]
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rt_spin_lock+0x1e0/0x400 kernel/locking/spinlock_rt.c:57
 #5: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #5: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #5: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: class_rcu_constructor include/linux/rcupdate.h:1181 [inline]
 #5: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: unwind_next_frame+0xa6/0x2550 arch/x86/kernel/unwind_orc.c:495
2 locks held by syz-executor/6134:
 #0: ffff888097328f80 (&hdev->req_lock){+.+.}-{4:4}, at: hci_dev_do_close net/bluetooth/hci_core.c:500 [inline]
 #0: ffff888097328f80 (&hdev->req_lock){+.+.}-{4:4}, at: hci_unregister_dev+0x212/0x5a0 net/bluetooth/hci_core.c:2716
 #1: ffff8880973280b0 (&hdev->lock){+.+.}-{4:4}, at: hci_dev_close_sync+0x640/0x10e0 net/bluetooth/hci_sync.c:5356
3 locks held by syz-executor/6136:
 #0: ffff8880341f6ed8 (&sb->s_type->i_mutex_key#4/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:1074 [inline]
 #0: ffff8880341f6ed8 (&sb->s_type->i_mutex_key#4/1){+.+.}-{4:4}, at: __start_dirop fs/namei.c:2914 [inline]
 #0: ffff8880341f6ed8 (&sb->s_type->i_mutex_key#4/1){+.+.}-{4:4}, at: start_dirop+0x4f/0x90 fs/namei.c:2938
 #1: ffffffff8e10d270 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:187 [inline]
 #1: ffffffff8e10d270 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_read_lock+0x27/0x60 include/linux/srcu.h:294
 #2: ffff88813fffbb98 (&zone->lock){+.+.}-{3:3}, at: spin_lock include/linux/spinlock_rt.h:45 [inline]
 #2: ffff88813fffbb98 (&zone->lock){+.+.}-{3:3}, at: free_one_page+0x43/0x250 mm/page_alloc.c:1557
8 locks held by kworker/u8:21/6158:
 #0: ffff88813fe84138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x897/0x1630 kernel/workqueue.c:3281
 #1: ffffc9000468fc40 ((work_completion)(&rdev->wiphy_work)){+.+.}-{0:0}, at: process_one_work+0x8be/0x1630 kernel/workqueue.c:3282
 #2: ffff888070c808d8 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6875 [inline]
 #2: ffff888070c808d8 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: cfg80211_wiphy_work+0xb4/0x460 net/wireless/core.c:524
 #3: ffffffff8de5f380 (local_bh){.+.+}-{1:3}, at: __local_bh_disable_ip+0x3c/0x420 kernel/softirq.c:163
 #4: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: __local_bh_disable_ip+0x3c/0x420 kernel/softirq.c:163
 #5: ffff888070c80228 (&rdev->bss_lock){+...}-{3:3}, at: spin_lock_bh include/linux/spinlock_rt.h:90 [inline]
 #5: ffff888070c80228 (&rdev->bss_lock){+...}-{3:3}, at: cfg80211_inform_single_bss_data+0xbbf/0x1b80 net/wireless/scan.c:2367
 #6: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #6: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #6: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: __rt_spin_lock kernel/locking/spinlock_rt.c:50 [inline]
 #6: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rt_spin_lock+0x1e0/0x400 kernel/locking/spinlock_rt.c:57
 #7: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #7: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #7: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: class_rcu_constructor include/linux/rcupdate.h:1181 [inline]
 #7: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: unwind_next_frame+0xa6/0x2550 arch/x86/kernel/unwind_orc.c:495
2 locks held by syz-executor/6194:
 #0: ffffffff8e13a680 (namespace_sem){++++}-{4:4}, at: namespace_lock fs/namespace.c:1729 [inline]
 #0: ffffffff8e13a680 (namespace_sem){++++}-{4:4}, at: class_namespace_excl_constructor fs/namespace.c:90 [inline]
 #0: ffffffff8e13a680 (namespace_sem){++++}-{4:4}, at: copy_mnt_ns+0x336/0xcb0 fs/namespace.c:4249
 #1: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #1: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #1: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: class_rcu_constructor include/linux/rcupdate.h:1181 [inline]
 #1: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: unwind_next_frame+0xa6/0x2550 arch/x86/kernel/unwind_orc.c:495
1 lock held by syz-execut[  271.895926][   T38] 1 lock held by syz-executor/6195:
 #0: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #0: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #0: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: path_init+0x12d/0x14d0 fs/namei.c:2685
2 locks held by modprobe/6196:
 #0: ffff888085492448 (vm_lock){++++}-{0:0}, at: lock_vma_under_rcu+0x1d1/0x500 mm/mmap_lock.c:310
 #1: ffffffff8e10d270 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:187 [inline]
 #1: ffffffff8e10d270 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_read_lock+0x27/0x60 include/linux/srcu.h:294
3 locks held by syz-executor/6197:
 #0: ffff88803422e820 (&sb->s_type->i_mutex_key#12){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:1044 [inline]
 #0: ffff88803422e820 (&sb->s_type->i_mutex_key#12){++++}-{4:4}, at: lookup_slow+0x46/0x70 fs/namei.c:1931
 #1: ffff88801baf8658 (&n->list_lock){+.+.}-{3:3}, at: spin_lock include/linux/spinlock_rt.h:45 [inline]
 #1: ffff88801baf8658 (&n->list_lock){+.+.}-{3:3}, at: get_partial_node_bulk mm/slub.c:3752 [inline]
 #1: ffff88801baf8658 (&n->list_lock){+.+.}-{3:3}, at: __refill_objects_node+0x89/0x620 mm/slub.c:7164
 #2: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #2: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #2: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: __rt_spin_lock kernel/locking/spinlock_rt.c:50 [inline]
 #2: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rt_spin_lock+0x1e0/0x400 kernel/locking/spinlock_rt.c:57
3 locks held by syz-executor/6200:
 #0: ffff888097fb6bc8 (vm_lock){++++}-{0:0}, at: lock_vma_under_rcu+0x1d1/0x500 mm/mmap_lock.c:310
 #1: ffff88803704aab0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_trylock+0x1f/0x70 include/linux/mmap_lock.h:611
 #2: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #2: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #2: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: class_rcu_constructor include/linux/rcupdate.h:1181 [inline]
 #2: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: unwind_next_frame+0xa6/0x2550 arch/x86/kernel/unwind_orc.c:495

=============================================

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 38 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
 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+0xfd3/0x1030 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
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 3 Comm: pool_workqueue_ Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:remove_class_from_lock_chains kernel/locking/lockdep.c:6237 [inline]
RIP: 0010:zap_class+0xc0/0x340 kernel/locking/lockdep.c:6283
Code: 45 31 e4 48 c7 c5 30 d8 77 93 eb 10 49 ff c4 49 81 fc 00 00 08 00 0f 84 a4 01 00 00 4e 8b 2c e5 c0 d3 33 93 4d 85 ed 0f 94 c0 <49> 83 c5 f8 0f 94 c1 08 c1 75 d7 45 8b 75 00 41 f6 c6 fc 0f 84 e1
RSP: 0018:ffffc90000087c50 EFLAGS: 00000046
RAX: 0000000000085901 RBX: ffffffff92898606 RCX: 0000000000085901
RDX: ffffffff9333d3b8 RSI: 0000000000000008 RDI: 00000000000fbedb
RBP: ffffffff9377d830 R08: ffffffff81ae0ea8 R09: ffffffff8dfc8240
R10: dffffc0000000000 R11: fffffbfff1f1597f R12: 000000000003fba6
R13: 0000000000000000 R14: 000000000008593b R15: 0000000000000bc3
FS:  0000000000000000(0000) GS:ffff888125f1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa5b3b9635d CR3: 000000009d536000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __lockdep_free_key_range kernel/locking/lockdep.c:6409 [inline]
 lockdep_unregister_key+0x1c3/0x350 kernel/locking/lockdep.c:6611
 wq_unregister_lockdep kernel/workqueue.c:4933 [inline]
 pwq_release_workfn+0x6ce/0x8c0 kernel/workqueue.c:5229
 kthread_worker_fn+0x4ee/0xb20 kernel/kthread.c:1025
 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
 </TASK>