Extracting prog: 1m59.463962622s
Minimizing prog: 7m14.752931077s
Simplifying prog options: 0s
Extracting C: 47.929998491s
Simplifying C: 8m56.871463985s


extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ttynull-ioctl$TIOCSETD-dup-write$UHID_INPUT
detailed listing:
executing program 0:
r0 = openat$ttynull(0xffffffffffffff9c, &(0x7f0000000000), 0x103902, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000040)=0x15)
r1 = dup(r0)
write$UHID_INPUT(r1, 0x0, 0x0)

program crashed: INFO: trying to register non-static key in gsmld_write
single: successfully extracted reproducer
found reproducer with 4 syscalls
minimizing guilty program
testing program (duration=45.19568028s, {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}}): openat$ttynull-ioctl$TIOCSETD-dup
detailed listing:
executing program 0:
r0 = openat$ttynull(0xffffffffffffff9c, &(0x7f0000000000), 0x103902, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000040)=0x15)
dup(r0)

program did not crash
testing program (duration=45.19568028s, {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}}): openat$ttynull-ioctl$TIOCSETD-write$UHID_INPUT
detailed listing:
executing program 0:
r0 = openat$ttynull(0xffffffffffffff9c, &(0x7f0000000000), 0x103902, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000040)=0x15)
write$UHID_INPUT(0xffffffffffffffff, 0x0, 0x0)

program did not crash
testing program (duration=45.19568028s, {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}}): openat$ttynull-dup-write$UHID_INPUT
detailed listing:
executing program 0:
r0 = openat$ttynull(0xffffffffffffff9c, &(0x7f0000000000), 0x103902, 0x0)
r1 = dup(r0)
write$UHID_INPUT(r1, 0x0, 0x0)

program did not crash
testing program (duration=45.19568028s, {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$TIOCSETD-dup-write$UHID_INPUT
detailed listing:
executing program 0:
ioctl$TIOCSETD(0xffffffffffffffff, 0x5423, &(0x7f0000000040)=0x15)
r0 = dup(0xffffffffffffffff)
write$UHID_INPUT(r0, 0x0, 0x0)

program did not crash
testing program (duration=45.19568028s, {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}}): openat$ttynull-ioctl$TIOCSETD-dup-write$UHID_INPUT
detailed listing:
executing program 0:
r0 = openat$ttynull(0xffffffffffffff9c, 0x0, 0x103902, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000040)=0x15)
r1 = dup(r0)
write$UHID_INPUT(r1, 0x0, 0x0)

program did not crash
testing program (duration=45.19568028s, {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}}): openat$ttynull-ioctl$TIOCSETD-dup-write$UHID_INPUT
detailed listing:
executing program 0:
r0 = openat$ttynull(0xffffffffffffff9c, &(0x7f0000000000), 0x103902, 0x0)
ioctl$TIOCSETD(r0, 0x5423, 0x0)
r1 = dup(r0)
write$UHID_INPUT(r1, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=45.19568028s, {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}}): openat$ttynull-ioctl$TIOCSETD-dup-write$UHID_INPUT
program crashed: INFO: trying to register non-static key in gsmld_write
simplifying C reproducer
testing compiled C program (duration=45.19568028s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ttynull-ioctl$TIOCSETD-dup-write$UHID_INPUT
program crashed: INFO: trying to register non-static key in gsmld_write
testing compiled C program (duration=45.19568028s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ttynull-ioctl$TIOCSETD-dup-write$UHID_INPUT
program crashed: INFO: trying to register non-static key in gsmld_write
testing compiled C program (duration=45.19568028s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ttynull-ioctl$TIOCSETD-dup-write$UHID_INPUT
program crashed: INFO: trying to register non-static key in gsmld_write
testing compiled C program (duration=45.19568028s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ttynull-ioctl$TIOCSETD-dup-write$UHID_INPUT
program crashed: INFO: trying to register non-static key in gsmld_write
testing compiled C program (duration=45.19568028s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ttynull-ioctl$TIOCSETD-dup-write$UHID_INPUT
program crashed: INFO: trying to register non-static key in gsmld_write
testing compiled C program (duration=45.19568028s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ttynull-ioctl$TIOCSETD-dup-write$UHID_INPUT
program crashed: INFO: trying to register non-static key in gsmld_write
testing compiled C program (duration=45.19568028s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ttynull-ioctl$TIOCSETD-dup-write$UHID_INPUT
program crashed: INFO: trying to register non-static key in gsmld_write
testing compiled C program (duration=45.19568028s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ttynull-ioctl$TIOCSETD-dup-write$UHID_INPUT
program crashed: INFO: trying to register non-static key in gsmld_write
testing program (duration=45.19568028s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ttynull-ioctl$TIOCSETD-dup-write$UHID_INPUT
detailed listing:
executing program 0:
r0 = openat$ttynull(0xffffffffffffff9c, &(0x7f0000000000), 0x103902, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000040)=0x15)
r1 = dup(r0)
write$UHID_INPUT(r1, 0x0, 0x0)

program crashed: INFO: trying to register non-static key in gsmld_write
validation run: crashed=true
testing program (duration=45.19568028s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ttynull-ioctl$TIOCSETD-dup-write$UHID_INPUT
detailed listing:
executing program 0:
r0 = openat$ttynull(0xffffffffffffff9c, &(0x7f0000000000), 0x103902, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000040)=0x15)
r1 = dup(r0)
write$UHID_INPUT(r1, 0x0, 0x0)

program crashed: INFO: trying to register non-static key in gsmld_write
validation run: crashed=true
testing program (duration=45.19568028s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ttynull-ioctl$TIOCSETD-dup-write$UHID_INPUT
detailed listing:
executing program 0:
r0 = openat$ttynull(0xffffffffffffff9c, &(0x7f0000000000), 0x103902, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000040)=0x15)
r1 = dup(r0)
write$UHID_INPUT(r1, 0x0, 0x0)

program crashed: INFO: trying to register non-static key in gsmld_write
validation run: crashed=true
reproducing took 22m45.957836701s
repro crashed as (corrupted=false):
INFO: trying to register non-static key.
The code is fine but needs lockdep annotation, or maybe
you didn't initialize this object before use?
turning off the locking correctness validator.
CPU: 0 PID: 4358 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106
 assign_lock_key+0x1e0/0x1f0 kernel/locking/lockdep.c:937
 register_lock_class+0x20e/0x880 kernel/locking/lockdep.c:1250
 __lock_acquire+0x160/0x7c60 kernel/locking/lockdep.c:4891
 lock_acquire+0x197/0x3f0 kernel/locking/lockdep.c:5623
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xa4/0xf0 kernel/locking/spinlock.c:162
 gsmld_write+0x57/0x120 drivers/tty/n_gsm.c:2983
 do_tty_write drivers/tty/tty_io.c:1038 [inline]
 file_tty_write+0x557/0x910 drivers/tty/tty_io.c:1110
 call_write_iter include/linux/fs.h:2173 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0x712/0xd00 fs/read_write.c:594
 ksys_write+0x14d/0x250 fs/read_write.c:647
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fd08e8b3749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff52cc02b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fd08eb09fa0 RCX: 00007fd08e8b3749
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007fd08e937f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd08eb09fa0 R14: 00007fd08eb09fa0 R15: 0000000000000003
 </TASK>

final repro crashed as (corrupted=false):
INFO: trying to register non-static key.
The code is fine but needs lockdep annotation, or maybe
you didn't initialize this object before use?
turning off the locking correctness validator.
CPU: 0 PID: 4358 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106
 assign_lock_key+0x1e0/0x1f0 kernel/locking/lockdep.c:937
 register_lock_class+0x20e/0x880 kernel/locking/lockdep.c:1250
 __lock_acquire+0x160/0x7c60 kernel/locking/lockdep.c:4891
 lock_acquire+0x197/0x3f0 kernel/locking/lockdep.c:5623
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xa4/0xf0 kernel/locking/spinlock.c:162
 gsmld_write+0x57/0x120 drivers/tty/n_gsm.c:2983
 do_tty_write drivers/tty/tty_io.c:1038 [inline]
 file_tty_write+0x557/0x910 drivers/tty/tty_io.c:1110
 call_write_iter include/linux/fs.h:2173 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0x712/0xd00 fs/read_write.c:594
 ksys_write+0x14d/0x250 fs/read_write.c:647
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fd08e8b3749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff52cc02b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fd08eb09fa0 RCX: 00007fd08e8b3749
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007fd08e937f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd08eb09fa0 R14: 00007fd08eb09fa0 R15: 0000000000000003
 </TASK>