F2FS-fs (loop0): invalid crc value
F2FS-fs (loop0): Found nat_bits in checkpoint
F2FS-fs (loop0): Start checkpoint disabled!
F2FS-fs (loop0): Mounted with checkpoint version = 48b305e5
------------[ cut here ]------------
kernel BUG at fs/f2fs/segment.c:836!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 5135 Comm: syz.0.16 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__locate_dirty_segment+0xa2c/0xa40 fs/f2fs/segment.c:835
Code: 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 16 fd ff ff 4c 89 f7 e8 15 37 39 fe e9 09 fd ff ff e8 fb 32 f4 fd 0f 0b e8 f4 32 f4 fd <0f> 0b e8 ed 32 f4 fd 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 90 55 41
RSP: 0018:ffffc9000321f2b0 EFLAGS: 00010293
RAX: ffffffff8384ecac RBX: ffff88807992c000 RCX: ffff888078d71dc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff888147730f2f R09: 1ffff11028ee61e5
R10: dffffc0000000000 R11: ffffed1028ee61e6 R12: dffffc0000000000
R13: 0000000000000002 R14: 1ffff1100f32582d R15: ffff88807992c168
FS:  00007f95eb5226c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4f1ca80000 CR3: 000000005bb9e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 locate_dirty_segment+0x421/0x580 fs/f2fs/segment.c:908
 f2fs_invalidate_blocks+0x29b/0x380 fs/f2fs/segment.c:2382
 f2fs_truncate_data_blocks_range+0x74c/0xee0 fs/f2fs/file.c:605
 truncate_dnode fs/f2fs/node.c:953 [inline]
 f2fs_truncate_inode_blocks+0x6af/0xec0 fs/f2fs/node.c:1172
 f2fs_do_truncate_blocks+0x58e/0x8d0 fs/f2fs/file.c:723
 f2fs_truncate_blocks+0x103/0x2f0 fs/f2fs/file.c:751
 f2fs_truncate+0x3e6/0x770 fs/f2fs/file.c:803
 f2fs_setattr+0xa91/0x1140 fs/f2fs/file.c:981
 notify_change+0xbcd/0xee0 fs/attr.c:505
 do_truncate+0x1ac/0x240 fs/open.c:65
 handle_truncate fs/namei.c:3273 [inline]
 do_open fs/namei.c:3620 [inline]
 path_openat+0x2922/0x2fa0 fs/namei.c:3750
 do_filp_open+0x1e2/0x410 fs/namei.c:3777
 do_sys_openat2+0x150/0x4b0 fs/open.c:1255
 do_sys_open fs/open.c:1271 [inline]
 __do_sys_creat fs/open.c:1347 [inline]
 __se_sys_creat fs/open.c:1341 [inline]
 __x64_sys_creat+0x8c/0xb0 fs/open.c:1341
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f95ec2b43b9
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:00007f95eb522028 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007f95ec4b9fa0 RCX: 00007f95ec2b43b9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000000
RBP: 00007f95ec33f9d4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f95ec4b9fa0 R15: 00007ffe83e77468
 </TASK>
Modules linked in:
---[ end trace 52f2b29fafa25693 ]---
RIP: 0010:__locate_dirty_segment+0xa2c/0xa40 fs/f2fs/segment.c:835
Code: 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 16 fd ff ff 4c 89 f7 e8 15 37 39 fe e9 09 fd ff ff e8 fb 32 f4 fd 0f 0b e8 f4 32 f4 fd <0f> 0b e8 ed 32 f4 fd 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 90 55 41
RSP: 0018:ffffc9000321f2b0 EFLAGS: 00010293
RAX: ffffffff8384ecac RBX: ffff88807992c000 RCX: ffff888078d71dc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff888147730f2f R09: 1ffff11028ee61e5
R10: dffffc0000000000 R11: ffffed1028ee61e6 R12: dffffc0000000000
R13: 0000000000000002 R14: 1ffff1100f32582d R15: ffff88807992c168
FS:  00007f95eb5226c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4f1ca80000 CR3: 000000005bb9e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400