general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 PID: 7893 Comm: syz.4.1778 Tainted: G        W         5.10.232-syzkaller-00746-g49e8ba0a684f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:f2fs_test_and_set_bit fs/f2fs/f2fs.h:2908 [inline]
RIP: 0010:update_sit_entry+0x5df/0x1050 fs/f2fs/segment.c:2339
Code: 4d 90 48 8d 5c c8 18 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 ae 95 88 ff 4c 8b 33 4d 01 fe 4d 89 f4 49 c1 ec 03 <43> 0f b6 04 2c 84 c0 0f 85 21 09 00 00 41 0f b6 1e 41 89 df 8b 45
RSP: 0018:ffffc9000453f2b8 EFLAGS: 00010246
RAX: 1ffff110240fb83f RBX: ffff8881207dc1f8 RCX: 000000000000003c
RDX: ffff8881177d8000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000453f350 R08: ffffffff821fc440 R09: ffffffff821fbf9d
R10: 0000000000000003 R11: ffff8881177d8000 R12: 0000000000000000
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f4672f716c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f55629e4f98 CR3: 000000010f737000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 f2fs_allocate_data_block+0x1512/0x3680 fs/f2fs/segment.c:3481
 __allocate_data_block+0x5a7/0xb10 fs/f2fs/data.c:1407
 f2fs_map_blocks+0x18ef/0x3e50 fs/f2fs/data.c:1575
 expand_inode_data+0x682/0xc10 fs/f2fs/file.c:1717
 f2fs_fallocate+0x429/0x7e0 fs/f2fs/file.c:1812
 vfs_fallocate+0x492/0x570 fs/open.c:310
 do_vfs_ioctl+0x1686/0x1a30 fs/ioctl.c:732
 __do_sys_ioctl fs/ioctl.c:751 [inline]
 __se_sys_ioctl+0x99/0x190 fs/ioctl.c:739
 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:739
 do_syscall_64+0x34/0x70
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f4674920d29
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:00007f4672f71038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f4674b11080 RCX: 00007f4674920d29
RDX: 00000000200000c0 RSI: 0000000040305828 RDI: 0000000000000005
RBP: 00007f467499cb08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f4674b11080 R15: 00007ffe3b047768
Modules linked in:
---[ end trace 6db4e362f6e1ff47 ]---
RIP: 0010:f2fs_test_and_set_bit fs/f2fs/f2fs.h:2908 [inline]
RIP: 0010:update_sit_entry+0x5df/0x1050 fs/f2fs/segment.c:2339
Code: 4d 90 48 8d 5c c8 18 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 ae 95 88 ff 4c 8b 33 4d 01 fe 4d 89 f4 49 c1 ec 03 <43> 0f b6 04 2c 84 c0 0f 85 21 09 00 00 41 0f b6 1e 41 89 df 8b 45
RSP: 0018:ffffc9000453f2b8 EFLAGS: 00010246
RAX: 1ffff110240fb83f RBX: ffff8881207dc1f8 RCX: 000000000000003c
RDX: ffff8881177d8000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000453f350 R08: ffffffff821fc440 R09: ffffffff821fbf9d
R10: 0000000000000003 R11: ffff8881177d8000 R12: 0000000000000000
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f4672f716c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd9ecfe8ab8 CR3: 000000010f737000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	4d 90                	rex.WRB xchg %rax,%r8
   2:	48 8d 5c c8 18       	lea    0x18(%rax,%rcx,8),%rbx
   7:	48 89 d8             	mov    %rbx,%rax
   a:	48 c1 e8 03          	shr    $0x3,%rax
   e:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)
  13:	74 08                	je     0x1d
  15:	48 89 df             	mov    %rbx,%rdi
  18:	e8 ae 95 88 ff       	call   0xff8895cb
  1d:	4c 8b 33             	mov    (%rbx),%r14
  20:	4d 01 fe             	add    %r15,%r14
  23:	4d 89 f4             	mov    %r14,%r12
  26:	49 c1 ec 03          	shr    $0x3,%r12
* 2a:	43 0f b6 04 2c       	movzbl (%r12,%r13,1),%eax <-- trapping instruction
  2f:	84 c0                	test   %al,%al
  31:	0f 85 21 09 00 00    	jne    0x958
  37:	41 0f b6 1e          	movzbl (%r14),%ebx
  3b:	41 89 df             	mov    %ebx,%r15d
  3e:	8b                   	.byte 0x8b
  3f:	45                   	rex.RB