syzbot

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kernel BUG at fs/ext4/inline.c:236!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 1366 Comm: syz.3.192 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:ext4_write_inline_data fs/ext4/inline.c:236 [inline]
RIP: 0010:ext4_write_inline_data_end+0xdee/0xdf0 fs/ext4/inline.c:809
Code: f9 ff ff 4c 89 f7 e8 f1 04 d0 ff e9 e4 f9 ff ff e8 37 d3 90 ff 0f 0b e8 30 d3 90 ff 0f 0b e8 29 d3 90 ff 0f 0b e8 22 d3 90 ff <0f> 0b 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec
RSP: 0018:ffffc90001c07500 EFLAGS: 00010293
RAX: ffffffff81d8f61e RBX: 000000000000003c RCX: ffff88810d684f00
RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000006000
RBP: ffffc90001c07650 R08: ffff888115c1a257 R09: 1ffff11022b8344a
R10: dffffc0000000000 R11: ffffed1022b8344b R12: 0000000000006000
R13: dffffc0000000000 R14: ffff88813390d328 R15: dffffc0000000000
FS:  00007f76d6f146c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000002d0 CR3: 000000012f96c000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ext4_da_write_end+0x1d8/0x9e0 fs/ext4/inode.c:3092
 generic_perform_write+0x355/0x690 mm/filemap.c:3881
 ext4_buffered_write_iter+0x4ed/0x670 fs/ext4/file.c:270
 ext4_file_write_iter+0x440/0x1540 fs/ext4/file.c:-1
 do_iter_readv_writev+0x478/0x5f0 fs/read_write.c:-1
 do_iter_write+0x1fa/0x7b0 fs/read_write.c:855
 vfs_writev+0x2df/0x570 fs/read_write.c:928
 do_pwritev fs/read_write.c:1025 [inline]
 __do_sys_pwritev2 fs/read_write.c:1084 [inline]
 __se_sys_pwritev2+0x1af/0x2b0 fs/read_write.c:1075
 __x64_sys_pwritev2+0xbf/0xd0 fs/read_write.c:1075
 x64_sys_call+0x346/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:329
 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: 0033:0x7f76d70b1dd9
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:00007f76d6f14028 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007f76d732afa0 RCX: 00007f76d70b1dd9
RDX: 0000000000000001 RSI: 0000200000000100 RDI: 0000000000000004
RBP: 00007f76d7147d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000005405 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f76d732b038 R14: 00007f76d732afa0 R15: 00007ffc640f5dc8
 </TASK>
Modules linked in:
---[ end trace 5fce60948fdbccc6 ]---
RIP: 0010:ext4_write_inline_data fs/ext4/inline.c:236 [inline]
RIP: 0010:ext4_write_inline_data_end+0xdee/0xdf0 fs/ext4/inline.c:809
Code: f9 ff ff 4c 89 f7 e8 f1 04 d0 ff e9 e4 f9 ff ff e8 37 d3 90 ff 0f 0b e8 30 d3 90 ff 0f 0b e8 29 d3 90 ff 0f 0b e8 22 d3 90 ff <0f> 0b 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec
RSP: 0018:ffffc90001c07500 EFLAGS: 00010293
RAX: ffffffff81d8f61e RBX: 000000000000003c RCX: ffff88810d684f00
RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000006000
RBP: ffffc90001c07650 R08: ffff888115c1a257 R09: 1ffff11022b8344a
R10: dffffc0000000000 R11: ffffed1022b8344b R12: 0000000000006000
R13: dffffc0000000000 R14: ffff88813390d328 R15: dffffc0000000000
FS:  00007f76d6f146c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000002d0 CR3: 000000012f96c000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400