syzbot

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kernel BUG at fs/ext4/inline.c:235!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 504 Comm: syz.1.31 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:ext4_write_inline_data fs/ext4/inline.c:235 [inline]
RIP: 0010:ext4_write_inline_data_end+0x7d8/0x7e0 fs/ext4/inline.c:789
Code: fc ff ff 4c 89 ef e8 a7 9a d0 ff e9 d0 fc ff ff e8 3d ac 96 ff 0f 0b e8 36 ac 96 ff 0f 0b e8 2f ac 96 ff 0f 0b e8 28 ac 96 ff <0f> 0b 66 0f 1f 44 00 00 55 48 89 e5 41 57 41 56 41 55 41 54 53 48
RSP: 0018:ffffc90001c07540 EFLAGS: 00010293
RAX: ffffffff81ccf858 RBX: ffff888125b86600 RCX: ffff88810dc6a780
RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000006000
RBP: ffffc90001c07680 R08: dffffc0000000000 R09: ffffed1022d78053
R10: ffffed1022d78053 R11: 1ffff11022d78052 R12: dffffc0000000000
R13: ffff888125b864b8 R14: 0000000000006000 R15: 000000000000003c
FS:  00007fe721a406c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9354d26d58 CR3: 0000000112eb9000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ext4_da_write_inline_data_end+0x37/0x290 fs/ext4/inline.c:986
 ext4_da_write_end+0x7d7/0xa70 fs/ext4/inode.c:3195
 generic_perform_write+0x36d/0x510 mm/filemap.c:3520
 ext4_buffered_write_iter+0x4b8/0x640 fs/ext4/file.c:271
 ext4_file_write_iter+0x536/0x1980 fs/ext4/file.c:-1
 do_iter_readv_writev+0x491/0x600 fs/read_write.c:-1
 do_iter_write+0x189/0x630 fs/read_write.c:866
 vfs_writev+0x293/0x4f0 fs/read_write.c:939
 do_pwritev fs/read_write.c:1036 [inline]
 __do_sys_pwritev2 fs/read_write.c:1095 [inline]
 __se_sys_pwritev2+0x1a9/0x2b0 fs/read_write.c:1086
 __x64_sys_pwritev2+0xbf/0xd0 fs/read_write.c:1086
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fe721bd0749
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:00007fe721a40038 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007fe721e26fa0 RCX: 00007fe721bd0749
RDX: 0000000000000001 RSI: 0000200000000100 RDI: 0000000000000004
RBP: 00007fe721c54f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000005405 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe721e27038 R14: 00007fe721e26fa0 R15: 00007ffd223775d8
Modules linked in:
---[ end trace a50264540091912c ]---
RIP: 0010:ext4_write_inline_data fs/ext4/inline.c:235 [inline]
RIP: 0010:ext4_write_inline_data_end+0x7d8/0x7e0 fs/ext4/inline.c:789
Code: fc ff ff 4c 89 ef e8 a7 9a d0 ff e9 d0 fc ff ff e8 3d ac 96 ff 0f 0b e8 36 ac 96 ff 0f 0b e8 2f ac 96 ff 0f 0b e8 28 ac 96 ff <0f> 0b 66 0f 1f 44 00 00 55 48 89 e5 41 57 41 56 41 55 41 54 53 48
RSP: 0018:ffffc90001c07540 EFLAGS: 00010293
RAX: ffffffff81ccf858 RBX: ffff888125b86600 RCX: ffff88810dc6a780
RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000006000
RBP: ffffc90001c07680 R08: dffffc0000000000 R09: ffffed1022d78053
R10: ffffed1022d78053 R11: 1ffff11022d78052 R12: dffffc0000000000
R13: ffff888125b864b8 R14: 0000000000006000 R15: 000000000000003c
FS:  00007fe721a406c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9354d26d58 CR3: 0000000112eb9000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400