Extracting prog: 47.022161646s
Minimizing prog: 7m2.266481357s
Simplifying prog options: 0s
Extracting C: 21.470773321s
Simplifying C: 11m10.834663822s
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$bind-mount$incfs
detailed listing:
executing program 0:
mkdir(&(0x7f0000000100)='./file0\x00', 0x0)
mount$bind(&(0x7f00000002c0)='.\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x101091, 0x0)
mount$incfs(&(0x7f0000000000)='./file0\x00', &(0x7f0000000040)='./file0\x00', &(0x7f0000000180), 0x1, 0x0)
program crashed: KASAN: null-ptr-deref Write in vfs_rmdir
single: successfully extracted reproducer
found reproducer with 3 syscalls
minimizing guilty program
testing program (duration=31.127386483s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$bind
detailed listing:
executing program 0:
mkdir(&(0x7f0000000100)='./file0\x00', 0x0)
mount$bind(&(0x7f00000002c0)='.\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x101091, 0x0)
program did not crash
testing program (duration=31.127386483s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs
detailed listing:
executing program 0:
mkdir(&(0x7f0000000100)='./file0\x00', 0x0)
mount$incfs(&(0x7f0000000000)='./file0\x00', &(0x7f0000000040)='./file0\x00', &(0x7f0000000180), 0x1, 0x0)
program did not crash
testing program (duration=31.127386483s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mount$bind-mount$incfs
detailed listing:
executing program 0:
mount$bind(&(0x7f00000002c0)='.\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x101091, 0x0)
mount$incfs(&(0x7f0000000000)='./file0\x00', &(0x7f0000000040)='./file0\x00', &(0x7f0000000180), 0x1, 0x0)
program did not crash
testing program (duration=31.127386483s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$bind-mount$incfs
detailed listing:
executing program 0:
mkdir(0x0, 0x0)
mount$bind(&(0x7f00000002c0)='.\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x101091, 0x0)
mount$incfs(&(0x7f0000000000)='./file0\x00', &(0x7f0000000040)='./file0\x00', &(0x7f0000000180), 0x1, 0x0)
program did not crash
testing program (duration=31.127386483s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$bind-mount$incfs
detailed listing:
executing program 0:
mkdir(&(0x7f0000000100)='./file0\x00', 0x0)
mount$bind(0x0, &(0x7f0000000200)='./file0\x00', 0x0, 0x101091, 0x0)
mount$incfs(&(0x7f0000000000)='./file0\x00', &(0x7f0000000040)='./file0\x00', &(0x7f0000000180), 0x1, 0x0)
program did not crash
testing program (duration=31.127386483s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$bind-mount$incfs
detailed listing:
executing program 0:
mkdir(&(0x7f0000000100)='./file0\x00', 0x0)
mount$bind(&(0x7f00000002c0)='.\x00', 0x0, 0x0, 0x101091, 0x0)
mount$incfs(&(0x7f0000000000)='./file0\x00', &(0x7f0000000040)='./file0\x00', &(0x7f0000000180), 0x1, 0x0)
program did not crash
testing program (duration=31.127386483s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$bind-mount$incfs
detailed listing:
executing program 0:
mkdir(&(0x7f0000000100)='./file0\x00', 0x0)
mount$bind(&(0x7f00000002c0)='.\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x101091, 0x0)
mount$incfs(0x0, &(0x7f0000000040)='./file0\x00', &(0x7f0000000180), 0x1, 0x0)
program did not crash
testing program (duration=31.127386483s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$bind-mount$incfs
detailed listing:
executing program 0:
mkdir(&(0x7f0000000100)='./file0\x00', 0x0)
mount$bind(&(0x7f00000002c0)='.\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x101091, 0x0)
mount$incfs(&(0x7f0000000000)='./file0\x00', 0x0, &(0x7f0000000180), 0x1, 0x0)
program did not crash
testing program (duration=31.127386483s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$bind-mount$incfs
detailed listing:
executing program 0:
mkdir(&(0x7f0000000100)='./file0\x00', 0x0)
mount$bind(&(0x7f00000002c0)='.\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x101091, 0x0)
mount$incfs(&(0x7f0000000000)='./file0\x00', &(0x7f0000000040)='./file0\x00', 0x0, 0x1, 0x0)
program did not crash
extracting C reproducer
testing compiled C program (duration=31.127386483s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$bind-mount$incfs
program crashed: KASAN: null-ptr-deref Write in vfs_rmdir
simplifying C reproducer
testing compiled C program (duration=31.127386483s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$bind-mount$incfs
program crashed: KASAN: null-ptr-deref Write in vfs_rmdir
testing compiled C program (duration=31.127386483s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$bind-mount$incfs
program did not crash
testing compiled C program (duration=31.127386483s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$bind-mount$incfs
program crashed: KASAN: null-ptr-deref Write in vfs_rmdir
testing compiled C program (duration=31.127386483s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$bind-mount$incfs
program did not crash
testing compiled C program (duration=31.127386483s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$bind-mount$incfs
program crashed: KASAN: null-ptr-deref Write in vfs_rmdir
testing compiled C program (duration=31.127386483s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$bind-mount$incfs
program crashed: KASAN: null-ptr-deref Write in vfs_rmdir
testing compiled C program (duration=31.127386483s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$bind-mount$incfs
program crashed: KASAN: null-ptr-deref Write in vfs_rmdir
testing compiled C program (duration=31.127386483s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$bind-mount$incfs
program crashed: KASAN: null-ptr-deref Write in vfs_rmdir
testing compiled C program (duration=31.127386483s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$bind-mount$incfs
program crashed: KASAN: null-ptr-deref Write in vfs_rmdir
testing compiled C program (duration=31.127386483s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$bind-mount$incfs
program crashed: KASAN: null-ptr-deref Write in vfs_rmdir
testing compiled C program (duration=31.127386483s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$bind-mount$incfs
program did not crash
testing compiled C program (duration=31.127386483s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$bind-mount$incfs
program crashed: KASAN: null-ptr-deref Write in vfs_rmdir
testing compiled C program (duration=31.127386483s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$bind-mount$incfs
program crashed: KASAN: null-ptr-deref Write in vfs_rmdir
testing compiled C program (duration=31.127386483s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$bind-mount$incfs
program crashed: KASAN: null-ptr-deref Write in vfs_rmdir
reproducing took 19m21.594099586s
repro crashed as (corrupted=false):
R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffc11ba92d0
R13: 000055556ce0e6c0 R14: 00007ffc11ba92d0 R15: 0000000000000001
</TASK>
---[ end trace 0000000000000000 ]---
==================================================================
BUG: KASAN: null-ptr-deref in instrument_atomic_read_write include/linux/instrumented.h:102 [inline]
BUG: KASAN: null-ptr-deref in atomic_inc_return include/linux/atomic/atomic-instrumented.h:198 [inline]
BUG: KASAN: null-ptr-deref in ihold+0x20/0x60 fs/inode.c:452
Write of size 4 at addr 0000000000000170 by task syz-executor177/289
CPU: 0 PID: 289 Comm: syz-executor177 Tainted: G W 6.1.118-syzkaller-00015-g770852bf7d99 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106
print_report+0xe1/0x4e0 mm/kasan/report.c:430
kasan_report+0x13c/0x170 mm/kasan/report.c:531
kasan_check_range+0x294/0x2a0 mm/kasan/generic.c:189
__kasan_check_write+0x14/0x20 mm/kasan/shadow.c:37
instrument_atomic_read_write include/linux/instrumented.h:102 [inline]
atomic_inc_return include/linux/atomic/atomic-instrumented.h:198 [inline]
ihold+0x20/0x60 fs/inode.c:452
d_delete_notify include/linux/fsnotify.h:289 [inline]
vfs_rmdir+0x268/0x500 fs/namei.c:4203
incfs_kill_sb+0x113/0x230 fs/incfs/vfs.c:1995
deactivate_locked_super+0xad/0x110 fs/super.c:334
deactivate_super+0xbe/0xf0 fs/super.c:365
cleanup_mnt+0x485/0x510 fs/namespace.c:1186
__cleanup_mnt+0x19/0x20 fs/namespace.c:1193
task_work_run+0x24d/0x2e0 kernel/task_work.c:203
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0x94/0xa0 kernel/entry/common.c:177
exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x26/0x130 kernel/entry/common.c:303
do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fa362457a47
Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffc11ba81a8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fa362457a47
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc11ba8260
RBP: 00007ffc11ba8260 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffc11ba92d0
R13: 000055556ce0e6c0 R14: 00007ffc11ba92d0 R15: 0000000000000001
</TASK>
==================================================================
BUG: kernel NULL pointer dereference, address: 0000000000000170
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 0 P4D 0
Oops: 0002 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 289 Comm: syz-executor177 Tainted: G B W 6.1.118-syzkaller-00015-g770852bf7d99 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:arch_atomic_inc_return include/linux/atomic/atomic-arch-fallback.h:440 [inline]
RIP: 0010:atomic_inc_return include/linux/atomic/atomic-instrumented.h:199 [inline]
RIP: 0010:ihold+0x25/0x60 fs/inode.c:452
Code: 00 00 00 00 00 55 48 89 e5 41 56 53 49 89 fe e8 41 57 a8 ff 49 8d be 70 01 00 00 be 04 00 00 00 e8 70 cd ef ff bb 01 00 00 00 <f0> 41 0f c1 9e 70 01 00 00 ff c3 bf 02 00 00 00 89 de e8 c4 5a a8
RSP: 0018:ffffc90000e17c30 EFLAGS: 00010246
RAX: ffff88810f419400 RBX: 0000000000000001 RCX: ffff88810f419440
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000e17c40 R08: ffffffff8144a503 R09: fffffbfff0f6e2fd
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1102470f906
R13: ffff88812413e330 R14: 0000000000000000 R15: 1ffff11024827c6c
FS: 000055556ce0d380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000170 CR3: 0000000121d57000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
d_delete_notify include/linux/fsnotify.h:289 [inline]
vfs_rmdir+0x268/0x500 fs/namei.c:4203
incfs_kill_sb+0x113/0x230 fs/incfs/vfs.c:1995
deactivate_locked_super+0xad/0x110 fs/super.c:334
deactivate_super+0xbe/0xf0 fs/super.c:365
cleanup_mnt+0x485/0x510 fs/namespace.c:1186
__cleanup_mnt+0x19/0x20 fs/namespace.c:1193
task_work_run+0x24d/0x2e0 kernel/task_work.c:203
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0x94/0xa0 kernel/entry/common.c:177
exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x26/0x130 kernel/entry/common.c:303
do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fa362457a47
Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffc11ba81a8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fa362457a47
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc11ba8260
RBP: 00007ffc11ba8260 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffc11ba92d0
R13: 000055556ce0e6c0 R14: 00007ffc11ba92d0 R15: 0000000000000001
</TASK>
Modules linked in:
CR2: 0000000000000170
---[ end trace 0000000000000000 ]---
RIP: 0010:arch_atomic_inc_return include/linux/atomic/atomic-arch-fallback.h:440 [inline]
RIP: 0010:atomic_inc_return include/linux/atomic/atomic-instrumented.h:199 [inline]
RIP: 0010:ihold+0x25/0x60 fs/inode.c:452
Code: 00 00 00 00 00 55 48 89 e5 41 56 53 49 89 fe e8 41 57 a8 ff 49 8d be 70 01 00 00 be 04 00 00 00 e8 70 cd ef ff bb 01 00 00 00 <f0> 41 0f c1 9e 70 01 00 00 ff c3 bf 02 00 00 00 89 de e8 c4 5a a8
RSP: 0018:ffffc90000e17c30 EFLAGS: 00010246
RAX: ffff88810f419400 RBX: 0000000000000001 RCX: ffff88810f419440
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000e17c40 R08: ffffffff8144a503 R09: fffffbfff0f6e2fd
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1102470f906
R13: ffff88812413e330 R14: 0000000000000000 R15: 1ffff11024827c6c
FS: 000055556ce0d380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000170 CR3: 0000000121d57000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 00 00 add %al,(%rax)
4: 00 55 48 add %dl,0x48(%rbp)
7: 89 e5 mov %esp,%ebp
9: 41 56 push %r14
b: 53 push %rbx
c: 49 89 fe mov %rdi,%r14
f: e8 41 57 a8 ff call 0xffa85755
14: 49 8d be 70 01 00 00 lea 0x170(%r14),%rdi
1b: be 04 00 00 00 mov $0x4,%esi
20: e8 70 cd ef ff call 0xffefcd95
25: bb 01 00 00 00 mov $0x1,%ebx
* 2a: f0 41 0f c1 9e 70 01 lock xadd %ebx,0x170(%r14) <-- trapping instruction
31: 00 00
33: ff c3 inc %ebx
35: bf 02 00 00 00 mov $0x2,%edi
3a: 89 de mov %ebx,%esi
3c: e8 .byte 0xe8
3d: c4 .byte 0xc4
3e: 5a pop %rdx
3f: a8 .byte 0xa8
final repro crashed as (corrupted=false):
R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffc11ba92d0
R13: 000055556ce0e6c0 R14: 00007ffc11ba92d0 R15: 0000000000000001
</TASK>
---[ end trace 0000000000000000 ]---
==================================================================
BUG: KASAN: null-ptr-deref in instrument_atomic_read_write include/linux/instrumented.h:102 [inline]
BUG: KASAN: null-ptr-deref in atomic_inc_return include/linux/atomic/atomic-instrumented.h:198 [inline]
BUG: KASAN: null-ptr-deref in ihold+0x20/0x60 fs/inode.c:452
Write of size 4 at addr 0000000000000170 by task syz-executor177/289
CPU: 0 PID: 289 Comm: syz-executor177 Tainted: G W 6.1.118-syzkaller-00015-g770852bf7d99 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106
print_report+0xe1/0x4e0 mm/kasan/report.c:430
kasan_report+0x13c/0x170 mm/kasan/report.c:531
kasan_check_range+0x294/0x2a0 mm/kasan/generic.c:189
__kasan_check_write+0x14/0x20 mm/kasan/shadow.c:37
instrument_atomic_read_write include/linux/instrumented.h:102 [inline]
atomic_inc_return include/linux/atomic/atomic-instrumented.h:198 [inline]
ihold+0x20/0x60 fs/inode.c:452
d_delete_notify include/linux/fsnotify.h:289 [inline]
vfs_rmdir+0x268/0x500 fs/namei.c:4203
incfs_kill_sb+0x113/0x230 fs/incfs/vfs.c:1995
deactivate_locked_super+0xad/0x110 fs/super.c:334
deactivate_super+0xbe/0xf0 fs/super.c:365
cleanup_mnt+0x485/0x510 fs/namespace.c:1186
__cleanup_mnt+0x19/0x20 fs/namespace.c:1193
task_work_run+0x24d/0x2e0 kernel/task_work.c:203
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0x94/0xa0 kernel/entry/common.c:177
exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x26/0x130 kernel/entry/common.c:303
do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fa362457a47
Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffc11ba81a8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fa362457a47
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc11ba8260
RBP: 00007ffc11ba8260 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffc11ba92d0
R13: 000055556ce0e6c0 R14: 00007ffc11ba92d0 R15: 0000000000000001
</TASK>
==================================================================
BUG: kernel NULL pointer dereference, address: 0000000000000170
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 0 P4D 0
Oops: 0002 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 289 Comm: syz-executor177 Tainted: G B W 6.1.118-syzkaller-00015-g770852bf7d99 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:arch_atomic_inc_return include/linux/atomic/atomic-arch-fallback.h:440 [inline]
RIP: 0010:atomic_inc_return include/linux/atomic/atomic-instrumented.h:199 [inline]
RIP: 0010:ihold+0x25/0x60 fs/inode.c:452
Code: 00 00 00 00 00 55 48 89 e5 41 56 53 49 89 fe e8 41 57 a8 ff 49 8d be 70 01 00 00 be 04 00 00 00 e8 70 cd ef ff bb 01 00 00 00 <f0> 41 0f c1 9e 70 01 00 00 ff c3 bf 02 00 00 00 89 de e8 c4 5a a8
RSP: 0018:ffffc90000e17c30 EFLAGS: 00010246
RAX: ffff88810f419400 RBX: 0000000000000001 RCX: ffff88810f419440
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000e17c40 R08: ffffffff8144a503 R09: fffffbfff0f6e2fd
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1102470f906
R13: ffff88812413e330 R14: 0000000000000000 R15: 1ffff11024827c6c
FS: 000055556ce0d380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000170 CR3: 0000000121d57000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
d_delete_notify include/linux/fsnotify.h:289 [inline]
vfs_rmdir+0x268/0x500 fs/namei.c:4203
incfs_kill_sb+0x113/0x230 fs/incfs/vfs.c:1995
deactivate_locked_super+0xad/0x110 fs/super.c:334
deactivate_super+0xbe/0xf0 fs/super.c:365
cleanup_mnt+0x485/0x510 fs/namespace.c:1186
__cleanup_mnt+0x19/0x20 fs/namespace.c:1193
task_work_run+0x24d/0x2e0 kernel/task_work.c:203
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0x94/0xa0 kernel/entry/common.c:177
exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x26/0x130 kernel/entry/common.c:303
do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fa362457a47
Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffc11ba81a8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fa362457a47
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc11ba8260
RBP: 00007ffc11ba8260 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffc11ba92d0
R13: 000055556ce0e6c0 R14: 00007ffc11ba92d0 R15: 0000000000000001
</TASK>
Modules linked in:
CR2: 0000000000000170
---[ end trace 0000000000000000 ]---
RIP: 0010:arch_atomic_inc_return include/linux/atomic/atomic-arch-fallback.h:440 [inline]
RIP: 0010:atomic_inc_return include/linux/atomic/atomic-instrumented.h:199 [inline]
RIP: 0010:ihold+0x25/0x60 fs/inode.c:452
Code: 00 00 00 00 00 55 48 89 e5 41 56 53 49 89 fe e8 41 57 a8 ff 49 8d be 70 01 00 00 be 04 00 00 00 e8 70 cd ef ff bb 01 00 00 00 <f0> 41 0f c1 9e 70 01 00 00 ff c3 bf 02 00 00 00 89 de e8 c4 5a a8
RSP: 0018:ffffc90000e17c30 EFLAGS: 00010246
RAX: ffff88810f419400 RBX: 0000000000000001 RCX: ffff88810f419440
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000e17c40 R08: ffffffff8144a503 R09: fffffbfff0f6e2fd
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1102470f906
R13: ffff88812413e330 R14: 0000000000000000 R15: 1ffff11024827c6c
FS: 000055556ce0d380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000170 CR3: 0000000121d57000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 00 00 add %al,(%rax)
4: 00 55 48 add %dl,0x48(%rbp)
7: 89 e5 mov %esp,%ebp
9: 41 56 push %r14
b: 53 push %rbx
c: 49 89 fe mov %rdi,%r14
f: e8 41 57 a8 ff call 0xffa85755
14: 49 8d be 70 01 00 00 lea 0x170(%r14),%rdi
1b: be 04 00 00 00 mov $0x4,%esi
20: e8 70 cd ef ff call 0xffefcd95
25: bb 01 00 00 00 mov $0x1,%ebx
* 2a: f0 41 0f c1 9e 70 01 lock xadd %ebx,0x170(%r14) <-- trapping instruction
31: 00 00
33: ff c3 inc %ebx
35: bf 02 00 00 00 mov $0x2,%edi
3a: 89 de mov %ebx,%esi
3c: e8 .byte 0xe8
3d: c4 .byte 0xc4
3e: 5a pop %rdx
3f: a8 .byte 0xa8