==================================================================
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:450
Write of size 4 at addr 0000000000000170 by task syz-executor197/302
CPU: 1 PID: 302 Comm: syz-executor197 Not tainted 6.1.25-syzkaller-00052-gc2611a04b92f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Call Trace:
__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:450
backing_data_changed+0x1d9/0x4f0 fs/fuse/dir.c:202
fuse_dentry_revalidate+0x826/0xe70 fs/fuse/dir.c:312
d_revalidate fs/namei.c:856 [inline]
lookup_dcache fs/namei.c:1565 [inline]
__lookup_hash+0x1b3/0x290 fs/namei.c:1586
do_renameat2+0x671/0x1480 fs/namei.c:4881
__do_sys_rename fs/namei.c:4976 [inline]
__se_sys_rename fs/namei.c:4974 [inline]
__x64_sys_rename+0x86/0x90 fs/namei.c:4974
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f00dde64739
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 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:00007f00dde05218 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007f00ddef33f8 RCX: 00007f00dde64739
RDX: 00007f00dde64739 RSI: 0000000020000140 RDI: 0000000020000100
RBP: 00007f00ddef33f0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f00ddec009c
R13: 000000000000006e R14: 0030656c69662f30 R15: 00007f00ddebe098
==================================================================
BUG: kernel NULL pointer dereference, address: 0000000000000170
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 121962067 P4D 121962067 PUD 121963067 PMD 0
Oops: 0002 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 302 Comm: syz-executor197 Tainted: G B 6.1.25-syzkaller-00052-gc2611a04b92f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
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:450
Code: 00 00 00 00 00 55 48 89 e5 41 56 53 49 89 fe e8 b1 e1 a9 ff 49 8d be 70 01 00 00 be 04 00 00 00 e8 40 33 f0 ff bb 01 00 00 00 41 0f c1 9e 70 01 00 00 ff c3 bf 02 00 00 00 89 de e8 34 e5 a9
RSP: 0018:ffffc90000ec7800 EFLAGS: 00010246
RAX: ffff888109786500 RBX: 0000000000000001 RCX: ffff888109786540
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000ec7810 R08: ffffffff81445ad3 R09: fffffbfff0ea42fd
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90000ec78a0
R13: 1ffff920001d8f0c R14: 0000000000000000 R15: ffff88811307e200
FS: 00007f00dde056c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000170 CR3: 0000000109440000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
backing_data_changed+0x1d9/0x4f0 fs/fuse/dir.c:202
fuse_dentry_revalidate+0x826/0xe70 fs/fuse/dir.c:312
d_revalidate fs/namei.c:856 [inline]
lookup_dcache fs/namei.c:1565 [inline]
__lookup_hash+0x1b3/0x290 fs/namei.c:1586
do_renameat2+0x671/0x1480 fs/namei.c:4881
__do_sys_rename fs/namei.c:4976 [inline]
__se_sys_rename fs/namei.c:4974 [inline]
__x64_sys_rename+0x86/0x90 fs/namei.c:4974
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f00dde64739
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 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:00007f00dde05218 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007f00ddef33f8 RCX: 00007f00dde64739
RDX: 00007f00dde64739 RSI: 0000000020000140 RDI: 0000000020000100
RBP: 00007f00ddef33f0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f00ddec009c
R13: 000000000000006e R14: 0030656c69662f30 R15: 00007f00ddebe098
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:450
Code: 00 00 00 00 00 55 48 89 e5 41 56 53 49 89 fe e8 b1 e1 a9 ff 49 8d be 70 01 00 00 be 04 00 00 00 e8 40 33 f0 ff bb 01 00 00 00 41 0f c1 9e 70 01 00 00 ff c3 bf 02 00 00 00 89 de e8 34 e5 a9
RSP: 0018:ffffc90000ec7800 EFLAGS: 00010246
RAX: ffff888109786500 RBX: 0000000000000001 RCX: ffff888109786540
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000ec7810 R08: ffffffff81445ad3 R09: fffffbfff0ea42fd
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90000ec78a0
R13: 1ffff920001d8f0c R14: 0000000000000000 R15: ffff88811307e200
FS: 00007f00dde056c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000170 CR3: 0000000109440000 CR4: 00000000003506a0
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 b1 e1 a9 ff call 0xffa9e1c5
14: 49 8d be 70 01 00 00 lea 0x170(%r14),%rdi
1b: be 04 00 00 00 mov $0x4,%esi
20: e8 40 33 f0 ff call 0xfff03365
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: 34 e5 xor $0xe5,%al
3f: a9 .byte 0xa9