------------[ cut here ]------------ kernel BUG at fs/buffer.c:2097! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 439 Comm: syz-executor.2 Not tainted 6.1.141-syzkaller-1169949-g96160a0e0aa1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:__block_commit_write+0x26a/0x270 fs/buffer.c:2097 Code: ff 48 8b 5d b8 48 89 df be 08 00 00 00 e8 0e 1e e8 ff f0 80 0b 04 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 86 c1 a3 ff <0f> 0b 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 b8 a7 7b a9 b7 RSP: 0018:ffffc900016a7768 EFLAGS: 00010293 RAX: ffffffff81cc35ea RBX: 0000000000000000 RCX: ffff888119f81440 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc900016a77b8 R08: dffffc0000000000 R09: fffff9400093f241 R10: fffff9400093f241 R11: 1ffffd400093f240 R12: 000000000000000c R13: ffff8881193a6858 R14: ffffea00049f9200 R15: dffffc0000000000 FS: 00007ffb397ff6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f21979e2000 CR3: 0000000127a9f000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: block_write_end+0x48/0x90 fs/buffer.c:2187 ext4_write_end+0x1f3/0x930 fs/ext4/inode.c:1349 ext4_da_write_end+0x8b/0x8c0 fs/ext4/inode.c:3085 generic_perform_write+0x3a2/0x6d0 mm/filemap.c:3893 ext4_buffered_write_iter+0x36f/0x660 fs/ext4/file.c:285 ext4_file_write_iter+0x18f/0x13d0 fs/ext4/file.c:-1 call_write_iter include/linux/fs.h:2282 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x5db/0xca0 fs/read_write.c:584 ksys_write+0x140/0x240 fs/read_write.c:637 __do_sys_write fs/read_write.c:649 [inline] __se_sys_write fs/read_write.c:646 [inline] __x64_sys_write+0x7b/0x90 fs/read_write.c:646 x64_sys_call+0x27b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:2 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7ffb39c7cda9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffb397ff0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007ffb39dabf80 RCX: 00007ffb39c7cda9 RDX: 000000000000000c RSI: 0000000020000300 RDI: 0000000000000004 RBP: 00007ffb39cc947a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007ffb39dabf80 R15: 00007ffce6230e58 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__block_commit_write+0x26a/0x270 fs/buffer.c:2097 Code: ff 48 8b 5d b8 48 89 df be 08 00 00 00 e8 0e 1e e8 ff f0 80 0b 04 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 86 c1 a3 ff <0f> 0b 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 b8 a7 7b a9 b7 RSP: 0018:ffffc900016a7768 EFLAGS: 00010293 RAX: ffffffff81cc35ea RBX: 0000000000000000 RCX: ffff888119f81440 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc900016a77b8 R08: dffffc0000000000 R09: fffff9400093f241 R10: fffff9400093f241 R11: 1ffffd400093f240 R12: 000000000000000c R13: ffff8881193a6858 R14: ffffea00049f9200 R15: dffffc0000000000 FS: 00007ffb397ff6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc1b52ea08 CR3: 0000000127a9f000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400