F2FS-fs (loop0): Mounted with checkpoint version = 48b305e5
==================================================================
BUG: KASAN: null-ptr-deref in instrument_atomic_read_write include/linux/instrumented.h:102 [inline]
BUG: KASAN: null-ptr-deref in atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:541 [inline]
BUG: KASAN: null-ptr-deref in queued_write_lock include/asm-generic/qrwlock.h:98 [inline]
BUG: KASAN: null-ptr-deref in __raw_write_lock include/linux/rwlock_api_smp.h:210 [inline]
BUG: KASAN: null-ptr-deref in _raw_write_lock+0x81/0xe0 kernel/locking/spinlock.c:300
Write of size 4 at addr 0000000000000030 by task syz-executor.0/473
CPU: 1 PID: 473 Comm: syz-executor.0 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Call Trace:
__dump_stack+0x21/0x24 lib/dump_stack.c:88
dump_stack_lvl+0xee/0x150 lib/dump_stack.c:106
print_report+0x3d/0x60 mm/kasan/report.c:421
kasan_report+0x122/0x150 mm/kasan/report.c:522
check_region_inline mm/kasan/generic.c:-1 [inline]
kasan_check_range+0x280/0x290 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_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:541 [inline]
queued_write_lock include/asm-generic/qrwlock.h:98 [inline]
__raw_write_lock include/linux/rwlock_api_smp.h:210 [inline]
_raw_write_lock+0x81/0xe0 kernel/locking/spinlock.c:300
__drop_extent_tree+0x44b/0x6e0 fs/f2fs/extent_cache.c:1089
f2fs_drop_extent_tree+0x17/0x30 fs/f2fs/extent_cache.c:1105
f2fs_insert_range+0x458/0x560 fs/f2fs/file.c:1752
f2fs_fallocate+0x498/0x720 fs/f2fs/file.c:1946
vfs_fallocate+0x4c5/0x5a0 fs/open.c:324
ksys_fallocate fs/open.c:347 [inline]
__do_sys_fallocate fs/open.c:355 [inline]
__se_sys_fallocate fs/open.c:353 [inline]
__x64_sys_fallocate+0xc0/0x110 fs/open.c:353
x64_sys_call+0x7fa/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:286
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fcca367c959
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fcca43db0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007fcca379bf80 RCX: 00007fcca367c959
RDX: 0000000000000000 RSI: 0000000000000020 RDI: 0000000000000005
RBP: 00007fcca36d8c88 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000010000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fcca379bf80 R15: 00007fff821f6f38
==================================================================
BUG: kernel NULL pointer dereference, address: 0000000000000030
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 127300067 P4D 127300067 PUD 12a263067 PMD 0
Oops: 0002 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 473 Comm: syz-executor.0 Tainted: G B syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:arch_atomic_try_cmpxchg arch/x86/include/asm/atomic.h:202 [inline]
RIP: 0010:atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:543 [inline]
RIP: 0010:queued_write_lock include/asm-generic/qrwlock.h:98 [inline]
RIP: 0010:__raw_write_lock include/linux/rwlock_api_smp.h:210 [inline]
RIP: 0010:_raw_write_lock+0x97/0xe0 kernel/locking/spinlock.c:300
Code: 44 24 20 00 00 00 00 48 89 df be 04 00 00 00 e8 df bd c0 fc 4c 89 f7 be 04 00 00 00 e8 d2 bd c0 fc 8b 44 24 20 b9 ff 00 00 00 0f b1 0b 75 2d 48 c7 04 24 0e 36 e0 45 4b c7 04 27 00 00 00 00
RSP: 0018:ffffc90001a77be0 EFLAGS: 00010297
RAX: 0000000000000000 RBX: 0000000000000030 RCX: 00000000000000ff
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc90001a77c00
RBP: ffffc90001a77c60 R08: 0000000000000004 R09: 0000000000000003
R10: fffff5200034ef80 R11: 1ffff9200034ef80 R12: dffffc0000000000
R13: 1ffff11022b77749 R14: ffffc90001a77c00 R15: 1ffff9200034ef7c
FS: 00007fcca43db6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000030 CR3: 000000011ab02000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__drop_extent_tree+0x44b/0x6e0 fs/f2fs/extent_cache.c:1089
f2fs_drop_extent_tree+0x17/0x30 fs/f2fs/extent_cache.c:1105
f2fs_insert_range+0x458/0x560 fs/f2fs/file.c:1752
f2fs_fallocate+0x498/0x720 fs/f2fs/file.c:1946
vfs_fallocate+0x4c5/0x5a0 fs/open.c:324
ksys_fallocate fs/open.c:347 [inline]
__do_sys_fallocate fs/open.c:355 [inline]
__se_sys_fallocate fs/open.c:353 [inline]
__x64_sys_fallocate+0xc0/0x110 fs/open.c:353
x64_sys_call+0x7fa/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:286
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fcca367c959
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fcca43db0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007fcca379bf80 RCX: 00007fcca367c959
RDX: 0000000000000000 RSI: 0000000000000020 RDI: 0000000000000005
RBP: 00007fcca36d8c88 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000010000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fcca379bf80 R15: 00007fff821f6f38
Modules linked in:
CR2: 0000000000000030
---[ end trace 0000000000000000 ]---
RIP: 0010:arch_atomic_try_cmpxchg arch/x86/include/asm/atomic.h:202 [inline]
RIP: 0010:atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:543 [inline]
RIP: 0010:queued_write_lock include/asm-generic/qrwlock.h:98 [inline]
RIP: 0010:__raw_write_lock include/linux/rwlock_api_smp.h:210 [inline]
RIP: 0010:_raw_write_lock+0x97/0xe0 kernel/locking/spinlock.c:300
Code: 44 24 20 00 00 00 00 48 89 df be 04 00 00 00 e8 df bd c0 fc 4c 89 f7 be 04 00 00 00 e8 d2 bd c0 fc 8b 44 24 20 b9 ff 00 00 00 0f b1 0b 75 2d 48 c7 04 24 0e 36 e0 45 4b c7 04 27 00 00 00 00
RSP: 0018:ffffc90001a77be0 EFLAGS: 00010297
RAX: 0000000000000000 RBX: 0000000000000030 RCX: 00000000000000ff
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc90001a77c00
RBP: ffffc90001a77c60 R08: 0000000000000004 R09: 0000000000000003
R10: fffff5200034ef80 R11: 1ffff9200034ef80 R12: dffffc0000000000
R13: 1ffff11022b77749 R14: ffffc90001a77c00 R15: 1ffff9200034ef7c
FS: 00007fcca43db6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000030 CR3: 000000011ab02000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 44 24 20 rex.R and $0x20,%al
3: 00 00 add %al,(%rax)
5: 00 00 add %al,(%rax)
7: 48 89 df mov %rbx,%rdi
a: be 04 00 00 00 mov $0x4,%esi
f: e8 df bd c0 fc call 0xfcc0bdf3
14: 4c 89 f7 mov %r14,%rdi
17: be 04 00 00 00 mov $0x4,%esi
1c: e8 d2 bd c0 fc call 0xfcc0bdf3
21: 8b 44 24 20 mov 0x20(%rsp),%eax
25: b9 ff 00 00 00 mov $0xff,%ecx
* 2a: f0 0f b1 0b lock cmpxchg %ecx,(%rbx) <-- trapping instruction
2e: 75 2d jne 0x5d
30: 48 c7 04 24 0e 36 e0 movq $0x45e0360e,(%rsp)
37: 45
38: 4b c7 04 27 00 00 00 movq $0x0,(%r15,%r12,1)
3f: 00