Extracting prog: 2m17.707896387s
Minimizing prog: 9m51.478223003s
Simplifying prog options: 0s
Extracting C: 1m0.117983943s
Simplifying C: 9m23.977296211s
extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$evdev-ioctl$EVIOCSFF-write$char_usb
detailed listing:
executing program 0:
r0 = syz_open_dev$evdev(&(0x7f00000000c0), 0x2, 0x862b01)
ioctl$EVIOCSFF(r0, 0x40304580, &(0x7f0000000b40)={0x54, 0x1, 0x1, {0x0, 0x1}, {0x60, 0x2}, @period={0x59, 0x0, 0x8, 0x2, 0x448, {0x2, 0x8, 0x679c, 0x401}, 0x0, 0x0}})
write$char_usb(r0, &(0x7f0000000040)="e2", 0x2250)
program crashed: general protection fault in k_pad
single: successfully extracted reproducer
found reproducer with 3 syscalls
minimizing guilty program
testing program (duration=47.549585235s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$evdev-ioctl$EVIOCSFF
detailed listing:
executing program 0:
r0 = syz_open_dev$evdev(&(0x7f00000000c0), 0x2, 0x862b01)
ioctl$EVIOCSFF(r0, 0x40304580, &(0x7f0000000b40)={0x54, 0x1, 0x1, {0x0, 0x1}, {0x60, 0x2}, @period={0x59, 0x0, 0x8, 0x2, 0x448, {0x2, 0x8, 0x679c, 0x401}, 0x0, 0x0}})
program did not crash
testing program (duration=47.549585235s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$evdev-write$char_usb
detailed listing:
executing program 0:
r0 = syz_open_dev$evdev(&(0x7f00000000c0), 0x2, 0x862b01)
write$char_usb(r0, &(0x7f0000000040)="e2", 0x2250)
program did not crash
testing program (duration=47.549585235s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$EVIOCSFF-write$char_usb
detailed listing:
executing program 0:
ioctl$EVIOCSFF(0xffffffffffffffff, 0x40304580, &(0x7f0000000b40)={0x54, 0x1, 0x1, {0x0, 0x1}, {0x60, 0x2}, @period={0x59, 0x0, 0x8, 0x2, 0x448, {0x2, 0x8, 0x679c, 0x401}, 0x0, 0x0}})
write$char_usb(0xffffffffffffffff, &(0x7f0000000040)="e2", 0x2250)
program did not crash
testing program (duration=47.549585235s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$evdev-ioctl$EVIOCSFF-write$char_usb
detailed listing:
executing program 0:
r0 = syz_open_dev$evdev(0x0, 0x2, 0x862b01)
ioctl$EVIOCSFF(r0, 0x40304580, &(0x7f0000000b40)={0x54, 0x1, 0x1, {0x0, 0x1}, {0x60, 0x2}, @period={0x59, 0x0, 0x8, 0x2, 0x448, {0x2, 0x8, 0x679c, 0x401}, 0x0, 0x0}})
write$char_usb(r0, &(0x7f0000000040)="e2", 0x2250)
program did not crash
testing program (duration=47.549585235s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$evdev-ioctl$EVIOCSFF-write$char_usb
detailed listing:
executing program 0:
r0 = syz_open_dev$evdev(&(0x7f00000000c0), 0x2, 0x862b01)
ioctl$EVIOCSFF(r0, 0x40304580, 0x0)
write$char_usb(r0, &(0x7f0000000040)="e2", 0x2250)
program did not crash
testing program (duration=47.549585235s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$evdev-ioctl$EVIOCSFF-write$char_usb
detailed listing:
executing program 0:
r0 = syz_open_dev$evdev(&(0x7f00000000c0), 0x2, 0x862b01)
ioctl$EVIOCSFF(r0, 0x40304580, &(0x7f0000000b40)={0x54, 0x1, 0x1, {0x0, 0x1}, {0x60, 0x2}, @period={0x59, 0x0, 0x8, 0x2, 0x448, {0x2, 0x8, 0x679c, 0x401}, 0x0, 0x0}})
write$char_usb(r0, 0x0, 0x0)
program did not crash
testing program (duration=47.549585235s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$evdev-ioctl$EVIOCSFF-write$char_usb
detailed listing:
executing program 0:
r0 = syz_open_dev$evdev(&(0x7f00000000c0), 0x2, 0x862b01)
ioctl$EVIOCSFF(r0, 0x40304580, &(0x7f0000000b40)={0x54, 0x1, 0x1, {0x0, 0x1}, {0x60, 0x2}, @period={0x59, 0x0, 0x8, 0x2, 0x448, {0x2, 0x8, 0x679c, 0x401}, 0x0, 0x0}})
write$char_usb(r0, &(0x7f0000000040), 0x0)
program did not crash
extracting C reproducer
testing compiled C program (duration=47.549585235s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$evdev-ioctl$EVIOCSFF-write$char_usb
program crashed: general protection fault in k_pad
simplifying C reproducer
testing compiled C program (duration=47.549585235s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$evdev-ioctl$EVIOCSFF-write$char_usb
program crashed: general protection fault in k_pad
testing compiled C program (duration=47.549585235s, {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}}): syz_open_dev$evdev-ioctl$EVIOCSFF-write$char_usb
program crashed: general protection fault in k_pad
testing compiled C program (duration=47.549585235s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$evdev-ioctl$EVIOCSFF-write$char_usb
program crashed: general protection fault in k_pad
testing compiled C program (duration=47.549585235s, {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}}): syz_open_dev$evdev-ioctl$EVIOCSFF-write$char_usb
program crashed: general protection fault in k_pad
testing compiled C program (duration=47.549585235s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$evdev-ioctl$EVIOCSFF-write$char_usb
program crashed: general protection fault in k_pad
testing compiled C program (duration=47.549585235s, {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}}): syz_open_dev$evdev-ioctl$EVIOCSFF-write$char_usb
program crashed: general protection fault in k_pad
testing compiled C program (duration=47.549585235s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$evdev-ioctl$EVIOCSFF-write$char_usb
program crashed: general protection fault in k_pad
testing program (duration=47.549585235s, {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}}): syz_open_dev$evdev-ioctl$EVIOCSFF-write$char_usb
detailed listing:
executing program 0:
r0 = syz_open_dev$evdev(&(0x7f00000000c0), 0x2, 0x862b01)
ioctl$EVIOCSFF(r0, 0x40304580, &(0x7f0000000b40)={0x54, 0x1, 0x1, {0x0, 0x1}, {0x60, 0x2}, @period={0x59, 0x0, 0x8, 0x2, 0x448, {0x2, 0x8, 0x679c, 0x401}, 0x0, 0x0}})
write$char_usb(r0, &(0x7f0000000040)="e2", 0x2250)
program crashed: general protection fault in k_pad
validation run: crashed=true
testing program (duration=47.549585235s, {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}}): syz_open_dev$evdev-ioctl$EVIOCSFF-write$char_usb
detailed listing:
executing program 0:
r0 = syz_open_dev$evdev(&(0x7f00000000c0), 0x2, 0x862b01)
ioctl$EVIOCSFF(r0, 0x40304580, &(0x7f0000000b40)={0x54, 0x1, 0x1, {0x0, 0x1}, {0x60, 0x2}, @period={0x59, 0x0, 0x8, 0x2, 0x448, {0x2, 0x8, 0x679c, 0x401}, 0x0, 0x0}})
write$char_usb(r0, &(0x7f0000000040)="e2", 0x2250)
program crashed: general protection fault in k_pad
validation run: crashed=true
testing program (duration=47.549585235s, {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}}): syz_open_dev$evdev-ioctl$EVIOCSFF-write$char_usb
detailed listing:
executing program 0:
r0 = syz_open_dev$evdev(&(0x7f00000000c0), 0x2, 0x862b01)
ioctl$EVIOCSFF(r0, 0x40304580, &(0x7f0000000b40)={0x54, 0x1, 0x1, {0x0, 0x1}, {0x60, 0x2}, @period={0x59, 0x0, 0x8, 0x2, 0x448, {0x2, 0x8, 0x679c, 0x401}, 0x0, 0x0}})
write$char_usb(r0, &(0x7f0000000040)="e2", 0x2250)
program crashed: general protection fault in k_pad
validation run: crashed=true
reproducing took 27m33.510759032s
repro crashed as (corrupted=false):
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000038: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x00000000000001c0-0x00000000000001c7]
CPU: 1 UID: 0 PID: 5998 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026
RIP: 0010:__queue_work+0xa2/0xf90 kernel/workqueue.c:2269
Code: 11 31 ff 89 ee e8 2e f3 37 00 85 ed 0f 85 ef 0c 00 00 e8 e1 ee 37 00 4d 8d b7 c0 01 00 00 4c 89 f0 48 c1 e8 03 48 89 44 24 28 <42> 0f b6 04 20 84 c0 0f 85 22 0d 00 00 4c 89 34 24 41 8b 2e 89 ee
RSP: 0018:ffffc900033074d8 EFLAGS: 00010002
RAX: 0000000000000038 RBX: 0000000000000008 RCX: ffff8880263ddac0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff88813fe32017 R09: 1ffff11027fc6402
R10: dffffc0000000000 R11: ffffed1027fc6403 R12: dffffc0000000000
R13: ffff88813fe32010 R14: 00000000000001c0 R15: 0000000000000000
FS: 0000555586803500(0000) GS:ffff88812515d000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30963fff CR3: 0000000077f76000 CR4: 00000000003526f0
Call Trace:
queue_work_on+0x106/0x1d0 kernel/workqueue.c:2405
put_queue drivers/tty/vt/keyboard.c:328 [inline]
k_pad+0x4c4/0xa90 drivers/tty/vt/keyboard.c:832
kbd_keycode drivers/tty/vt/keyboard.c:1497 [inline]
kbd_event+0x2ec1/0x40d0 drivers/tty/vt/keyboard.c:1515
input_handle_events_default+0xd4/0x1a0 drivers/input/input.c:2541
input_pass_values+0x288/0x890 drivers/input/input.c:128
input_event_dispose+0x330/0x6b0 drivers/input/input.c:342
input_inject_event+0x1dd/0x340 drivers/input/input.c:424
evdev_write+0x325/0x4c0 drivers/input/evdev.c:528
vfs_write+0x29a/0xb90 fs/read_write.c:686
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f624039aeb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd00f4af38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f6240615fa0 RCX: 00007f624039aeb9
RDX: 0000000000002250 RSI: 0000200000000040 RDI: 0000000000000003
RBP: 00007f6240408c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6240615fac R14: 00007f6240615fa0 R15: 00007f6240615fa0
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__queue_work+0xa2/0xf90 kernel/workqueue.c:2269
Code: 11 31 ff 89 ee e8 2e f3 37 00 85 ed 0f 85 ef 0c 00 00 e8 e1 ee 37 00 4d 8d b7 c0 01 00 00 4c 89 f0 48 c1 e8 03 48 89 44 24 28 <42> 0f b6 04 20 84 c0 0f 85 22 0d 00 00 4c 89 34 24 41 8b 2e 89 ee
RSP: 0018:ffffc900033074d8 EFLAGS: 00010002
RAX: 0000000000000038 RBX: 0000000000000008 RCX: ffff8880263ddac0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff88813fe32017 R09: 1ffff11027fc6402
R10: dffffc0000000000 R11: ffffed1027fc6403 R12: dffffc0000000000
R13: ffff88813fe32010 R14: 00000000000001c0 R15: 0000000000000000
FS: 0000555586803500(0000) GS:ffff88812515d000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30963fff CR3: 0000000077f76000 CR4: 00000000003526f0
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 31 ff xor %edi,%edi
2: 89 ee mov %ebp,%esi
4: e8 2e f3 37 00 call 0x37f337
9: 85 ed test %ebp,%ebp
b: 0f 85 ef 0c 00 00 jne 0xd00
11: e8 e1 ee 37 00 call 0x37eef7
16: 4d 8d b7 c0 01 00 00 lea 0x1c0(%r15),%r14
1d: 4c 89 f0 mov %r14,%rax
20: 48 c1 e8 03 shr $0x3,%rax
24: 48 89 44 24 28 mov %rax,0x28(%rsp)
* 29: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax <-- trapping instruction
2e: 84 c0 test %al,%al
30: 0f 85 22 0d 00 00 jne 0xd58
36: 4c 89 34 24 mov %r14,(%rsp)
3a: 41 8b 2e mov (%r14),%ebp
3d: 89 ee mov %ebp,%esi
final repro crashed as (corrupted=false):
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000038: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x00000000000001c0-0x00000000000001c7]
CPU: 1 UID: 0 PID: 5998 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026
RIP: 0010:__queue_work+0xa2/0xf90 kernel/workqueue.c:2269
Code: 11 31 ff 89 ee e8 2e f3 37 00 85 ed 0f 85 ef 0c 00 00 e8 e1 ee 37 00 4d 8d b7 c0 01 00 00 4c 89 f0 48 c1 e8 03 48 89 44 24 28 <42> 0f b6 04 20 84 c0 0f 85 22 0d 00 00 4c 89 34 24 41 8b 2e 89 ee
RSP: 0018:ffffc900033074d8 EFLAGS: 00010002
RAX: 0000000000000038 RBX: 0000000000000008 RCX: ffff8880263ddac0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff88813fe32017 R09: 1ffff11027fc6402
R10: dffffc0000000000 R11: ffffed1027fc6403 R12: dffffc0000000000
R13: ffff88813fe32010 R14: 00000000000001c0 R15: 0000000000000000
FS: 0000555586803500(0000) GS:ffff88812515d000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30963fff CR3: 0000000077f76000 CR4: 00000000003526f0
Call Trace:
queue_work_on+0x106/0x1d0 kernel/workqueue.c:2405
put_queue drivers/tty/vt/keyboard.c:328 [inline]
k_pad+0x4c4/0xa90 drivers/tty/vt/keyboard.c:832
kbd_keycode drivers/tty/vt/keyboard.c:1497 [inline]
kbd_event+0x2ec1/0x40d0 drivers/tty/vt/keyboard.c:1515
input_handle_events_default+0xd4/0x1a0 drivers/input/input.c:2541
input_pass_values+0x288/0x890 drivers/input/input.c:128
input_event_dispose+0x330/0x6b0 drivers/input/input.c:342
input_inject_event+0x1dd/0x340 drivers/input/input.c:424
evdev_write+0x325/0x4c0 drivers/input/evdev.c:528
vfs_write+0x29a/0xb90 fs/read_write.c:686
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f624039aeb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd00f4af38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f6240615fa0 RCX: 00007f624039aeb9
RDX: 0000000000002250 RSI: 0000200000000040 RDI: 0000000000000003
RBP: 00007f6240408c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6240615fac R14: 00007f6240615fa0 R15: 00007f6240615fa0
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__queue_work+0xa2/0xf90 kernel/workqueue.c:2269
Code: 11 31 ff 89 ee e8 2e f3 37 00 85 ed 0f 85 ef 0c 00 00 e8 e1 ee 37 00 4d 8d b7 c0 01 00 00 4c 89 f0 48 c1 e8 03 48 89 44 24 28 <42> 0f b6 04 20 84 c0 0f 85 22 0d 00 00 4c 89 34 24 41 8b 2e 89 ee
RSP: 0018:ffffc900033074d8 EFLAGS: 00010002
RAX: 0000000000000038 RBX: 0000000000000008 RCX: ffff8880263ddac0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff88813fe32017 R09: 1ffff11027fc6402
R10: dffffc0000000000 R11: ffffed1027fc6403 R12: dffffc0000000000
R13: ffff88813fe32010 R14: 00000000000001c0 R15: 0000000000000000
FS: 0000555586803500(0000) GS:ffff88812515d000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30963fff CR3: 0000000077f76000 CR4: 00000000003526f0
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 31 ff xor %edi,%edi
2: 89 ee mov %ebp,%esi
4: e8 2e f3 37 00 call 0x37f337
9: 85 ed test %ebp,%ebp
b: 0f 85 ef 0c 00 00 jne 0xd00
11: e8 e1 ee 37 00 call 0x37eef7
16: 4d 8d b7 c0 01 00 00 lea 0x1c0(%r15),%r14
1d: 4c 89 f0 mov %r14,%rax
20: 48 c1 e8 03 shr $0x3,%rax
24: 48 89 44 24 28 mov %rax,0x28(%rsp)
* 29: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax <-- trapping instruction
2e: 84 c0 test %al,%al
30: 0f 85 22 0d 00 00 jne 0xd58
36: 4c 89 34 24 mov %r14,(%rsp)
3a: 41 8b 2e mov (%r14),%ebp
3d: 89 ee mov %ebp,%esi