loop2: detected capacity change from 0 to 2048 ------------[ cut here ]------------ kernel BUG at fs/buffer.c:2097! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 916 Comm: syz-executor.2 Not tainted 6.1.118-syzkaller-1166347-g4c2d86d81fa6 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__block_commit_write+0x27d/0x280 fs/buffer.c:2097 Code: ff 48 8b 5d b8 48 89 df be 08 00 00 00 e8 3b a8 e6 ff f0 80 0b 04 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 c3 32 9f ff <0f> 0b 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 28 4c 89 RSP: 0018:ffffc90002147748 EFLAGS: 00010293 RAX: ffffffff81d653ed RBX: 0000000000000000 RCX: ffff888116e50000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90002147798 R08: ffffffff81d651d2 R09: fffff94000944289 R10: 0000000000000000 R11: dffffc0000000001 R12: 000000000000000c R13: 000000000000000c R14: 5000000000000017 R15: ffffea0004a21440 FS: 00007fd6a9b2b6c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fdafcaff000 CR3: 00000001260a6000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: block_write_end+0x47/0x90 fs/buffer.c:2187 ext4_write_end+0x218/0x910 fs/ext4/inode.c:1348 ext4_da_write_end+0x88/0x9a0 fs/ext4/inode.c:3084 generic_perform_write+0x416/0x780 mm/filemap.c:3888 ext4_buffered_write_iter+0x360/0x640 fs/ext4/file.c:285 ext4_file_write_iter+0x194/0x1570 call_write_iter include/linux/fs.h:2274 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0xaf6/0xed0 fs/read_write.c:584 ksys_write+0x199/0x2c0 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+0x2f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:2 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fd6a8e7cda9 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:00007fd6a9b2b0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fd6a8fabf80 RCX: 00007fd6a8e7cda9 RDX: 000000000000000c RSI: 0000000020000300 RDI: 0000000000000004 RBP: 00007fd6a8ec947a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fd6a8fabf80 R15: 00007ffe766aed48 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__block_commit_write+0x27d/0x280 fs/buffer.c:2097 Code: ff 48 8b 5d b8 48 89 df be 08 00 00 00 e8 3b a8 e6 ff f0 80 0b 04 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 c3 32 9f ff <0f> 0b 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 28 4c 89 RSP: 0018:ffffc90002147748 EFLAGS: 00010293 RAX: ffffffff81d653ed RBX: 0000000000000000 RCX: ffff888116e50000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90002147798 R08: ffffffff81d651d2 R09: fffff94000944289 R10: 0000000000000000 R11: dffffc0000000001 R12: 000000000000000c R13: 000000000000000c R14: 5000000000000017 R15: ffffea0004a21440 FS: 00007fd6a9b2b6c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f79761ad988 CR3: 00000001260a6000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400