------------[ cut here ]------------
kernel BUG at fs/f2fs/segment.c:1900!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 24755 Comm: syz.8.2281 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
RIP: 0010:f2fs_issue_discard_timeout+0x59b/0x5a0 fs/f2fs/segment.c:1900
Code: d9 80 e1 07 80 c1 03 38 c1 0f 8c d6 fe ff ff 48 89 df e8 38 57 fa fd e9 c9 fe ff ff e8 ee 48 94 fd 90 0f 0b e8 e6 48 94 fd 90 <0f> 0b 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3
RSP: 0018:ffffc9000e18f940 EFLAGS: 00010283
RAX: ffffffff84300aea RBX: 0000000000000001 RCX: 0000000000080000
RDX: ffffc9001faac000 RSI: 0000000000001f51 RDI: 0000000000001f52
RBP: ffff88803acf4001 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed100759ec31 R12: 1ffff1100759ec30
R13: 1ffff110071f502c R14: dffffc0000000000 R15: ffff88803acf6160
FS: 00007f40ea3156c0(0000) GS:ffff88812633f000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f215f308350 CR3: 000000003a918000 CR4: 00000000003526f0
Call Trace:
<TASK>
__f2fs_remount fs/f2fs/super.c:2960 [inline]
f2fs_reconfigure+0x108a/0x1710 fs/f2fs/super.c:5443
reconfigure_super+0x227/0x8a0 fs/super.c:1080
do_remount fs/namespace.c:3391 [inline]
path_mount+0xdc5/0x10e0 fs/namespace.c:4151
do_mount fs/namespace.c:4172 [inline]
__do_sys_mount fs/namespace.c:4361 [inline]
__se_sys_mount+0x31d/0x420 fs/namespace.c:4338
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f40ec0dda0a
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007f40ea314e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f40ea314ee0 RCX: 00007f40ec0dda0a
RDX: 0000200000000180 RSI: 0000200000000000 RDI: 0000000000000000
RBP: 0000200000000180 R08: 00007f40ea314ee0 R09: 00000000018424bc
R10: 00000000018424bc R11: 0000000000000246 R12: 0000200000000000
R13: 00007f40ea314ea0 R14: 0000000000000000 R15: 00002000000003c0
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:f2fs_issue_discard_timeout+0x59b/0x5a0 fs/f2fs/segment.c:1900
Code: d9 80 e1 07 80 c1 03 38 c1 0f 8c d6 fe ff ff 48 89 df e8 38 57 fa fd e9 c9 fe ff ff e8 ee 48 94 fd 90 0f 0b e8 e6 48 94 fd 90 <0f> 0b 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3
RSP: 0018:ffffc9000e18f940 EFLAGS: 00010283
RAX: ffffffff84300aea RBX: 0000000000000001 RCX: 0000000000080000
RDX: ffffc9001faac000 RSI: 0000000000001f51 RDI: 0000000000001f52
RBP: ffff88803acf4001 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed100759ec31 R12: 1ffff1100759ec30
R13: 1ffff110071f502c R14: dffffc0000000000 R15: ffff88803acf6160
FS: 00007f40ea3156c0(0000) GS:ffff88812633f000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f215f308350 CR3: 000000003a918000 CR4: 00000000003526f0