EXT4-fs error (device loop0) in ext4_reserve_inode_write:5839: Corrupt filesystem EXT4-fs error (device loop0): ext4_dirty_inode:6043: inode #16: comm syz-executor.0: mark_inode_dirty error ------------[ cut here ]------------ kernel BUG at fs/ext4/ext4.h:3331! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 434 Comm: syz-executor.0 Not tainted 6.1.25-syzkaller-00071-gb1644a0031cf #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023 RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:3331 [inline] RIP: 0010:ext4_mb_find_by_goal+0xdf4/0xe30 fs/ext4/mballoc.c:2162 Code: c4 ff e9 b5 fb ff ff e8 4a 04 80 ff 49 bc 00 00 00 00 00 fc ff df e9 6f f7 ff ff e8 36 04 80 ff e9 51 f7 ff ff e8 2c 04 80 ff <0f> 0b e8 35 37 f8 02 e8 20 04 80 ff 0f 0b e8 19 04 80 ff 0f 0b e8 RSP: 0018:ffffc90002dbeb00 EFLAGS: 00010293 RAX: ffffffff81f224a4 RBX: 0000000000000001 RCX: ffff88810a760000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffc90002dbec10 R08: ffffffff81f217db R09: ffffed102493f00b R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff11022507273 R13: 0000000000000001 R14: 1ffff920005b7d70 R15: ffff888112839398 FS: 00007f834ef9a700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055a444e29678 CR3: 000000010ee4b000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_mb_regular_allocator+0x24c/0x3610 fs/ext4/mballoc.c:2614 ext4_mb_new_blocks+0xfd3/0x48f0 fs/ext4/mballoc.c:5611 ext4_ext_map_blocks+0x19ca/0x71e0 fs/ext4/extents.c:4287 ext4_map_blocks+0xa42/0x1ce0 fs/ext4/inode.c:651 ext4_iomap_alloc fs/ext4/inode.c:3421 [inline] ext4_iomap_begin+0x824/0xd10 fs/ext4/inode.c:3471 iomap_iter+0x5b1/0xbe0 fs/iomap/iter.c:74 __iomap_dio_rw+0xdec/0x20b0 fs/iomap/direct-io.c:601 iomap_dio_rw+0x41/0x90 fs/iomap/direct-io.c:690 ext4_dio_write_iter fs/ext4/file.c:587 [inline] ext4_file_write_iter+0x1123/0x1cf0 fs/ext4/file.c:698 call_write_iter include/linux/fs.h:2205 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x893/0xe30 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 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f834e28c169 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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:00007f834ef9a168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f834e3abf80 RCX: 00007f834e28c169 RDX: 000000000002a000 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 00007f834e2e7ca1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd5f21ff9f R14: 00007f834ef9a300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:3331 [inline] RIP: 0010:ext4_mb_find_by_goal+0xdf4/0xe30 fs/ext4/mballoc.c:2162 Code: c4 ff e9 b5 fb ff ff e8 4a 04 80 ff 49 bc 00 00 00 00 00 fc ff df e9 6f f7 ff ff e8 36 04 80 ff e9 51 f7 ff ff e8 2c 04 80 ff <0f> 0b e8 35 37 f8 02 e8 20 04 80 ff 0f 0b e8 19 04 80 ff 0f 0b e8 RSP: 0018:ffffc90002dbeb00 EFLAGS: 00010293 RAX: ffffffff81f224a4 RBX: 0000000000000001 RCX: ffff88810a760000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffc90002dbec10 R08: ffffffff81f217db R09: ffffed102493f00b R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff11022507273 R13: 0000000000000001 R14: 1ffff920005b7d70 R15: ffff888112839398 FS: 00007f834ef9a700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020040000 CR3: 000000010ee4b000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400