syzbot

syz-executor343[5762]: memfd_create() called without MFD_EXEC or MFD_NOEXEC_SEAL set
loop0: detected capacity change from 0 to 40427
F2FS-fs (loop0): invalid crc value
F2FS-fs (loop0): Found nat_bits in checkpoint
F2FS-fs (loop0): Mounted with checkpoint version = 48b305e5
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kernel BUG at fs/f2fs/segment.c:3475!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 5762 Comm: syz-executor343 Not tainted 6.6.94-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:f2fs_allocate_data_block+0x3f0c/0x3f50 fs/f2fs/segment.c:3475
Code: 22 fe 48 8b 54 24 30 e9 c6 eb ff ff e8 cd 59 c9 fd 48 c7 c7 30 d6 2f 8d 4c 89 f6 e8 4e f6 95 00 e9 e2 eb ff ff e8 b4 59 c9 fd <0f> 0b e8 ad 59 c9 fd 0f 0b e8 a6 59 c9 fd 0f 0b e8 9f 59 c9 fd 0f
RSP: 0018:ffffc9000459f850 EFLAGS: 00010293
RAX: ffffffff83bc3c1c RBX: 0000000000000201 RCX: ffff88802f610000
RDX: 0000000000000000 RSI: 0000000000000201 RDI: 0000000000000200
RBP: 0000000000000200 R08: ffff888025e8a45f R09: 1ffff11004bd148b
R10: dffffc0000000000 R11: ffffed1004bd148c R12: 1ffff920008b3f7c
R13: 0000000000000000 R14: 0000000000002401 R15: dffffc0000000000
FS:  0000555590526380(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fad6de12000 CR3: 000000005a16f000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __allocate_data_block fs/f2fs/data.c:1421 [inline]
 f2fs_map_blocks+0x1697/0x3c00 fs/f2fs/data.c:1601
 f2fs_expand_inode_data+0x543/0x8e0 fs/f2fs/file.c:1798
 f2fs_fallocate+0x416/0x8a0 fs/f2fs/file.c:1901
 vfs_fallocate+0x58e/0x700 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+0xc1/0x110 fs/open.c:353
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f1f9fbe5879
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffcc9777b08 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 0000200000000180 RCX: 00007f1f9fbe5879
RDX: 000000000000fc01 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00007f1f9fc5d610 R08: 00000000000b55f8 R09: 00000000000b55f8
R10: 00000000001000f4 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffcc9777cd8 R14: 0000000000000001 R15: 0000000000000001
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:f2fs_allocate_data_block+0x3f0c/0x3f50 fs/f2fs/segment.c:3475
Code: 22 fe 48 8b 54 24 30 e9 c6 eb ff ff e8 cd 59 c9 fd 48 c7 c7 30 d6 2f 8d 4c 89 f6 e8 4e f6 95 00 e9 e2 eb ff ff e8 b4 59 c9 fd <0f> 0b e8 ad 59 c9 fd 0f 0b e8 a6 59 c9 fd 0f 0b e8 9f 59 c9 fd 0f
RSP: 0018:ffffc9000459f850 EFLAGS: 00010293
RAX: ffffffff83bc3c1c RBX: 0000000000000201 RCX: ffff88802f610000
RDX: 0000000000000000 RSI: 0000000000000201 RDI: 0000000000000200
RBP: 0000000000000200 R08: ffff888025e8a45f R09: 1ffff11004bd148b
R10: dffffc0000000000 R11: ffffed1004bd148c R12: 1ffff920008b3f7c
R13: 0000000000000000 R14: 0000000000002401 R15: dffffc0000000000
FS:  0000555590526380(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fad6de12000 CR3: 000000005a16f000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400