EXT4-fs error (device loop0) in ext4_reserve_inode_write:5718: Corrupt filesystem EXT4-fs error (device loop0): ext4_dirty_inode:5922: inode #16: comm syz-executor.0: mark_inode_dirty error ------------[ cut here ]------------ kernel BUG at fs/ext4/ext4.h:3241! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 12947 Comm: syz-executor.0 Not tainted 6.3.0-syzkaller-12728-g348551ddaf31 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 RIP: 0010:ext4_get_group_info+0x399/0x3a0 fs/ext4/ext4.h:3241 Code: 4c ff 8b 74 24 04 48 c7 c7 c0 38 0c 8d 4c 89 f2 e8 2c fd 2d 02 43 80 3c 2c 00 0f 85 23 fd ff ff e9 26 fd ff ff e8 07 bd 4c ff <0f> 0b 0f 1f 44 00 00 55 41 57 41 56 41 54 53 48 89 fb 49 bf 00 00 RSP: 0018:ffffc90016746b00 EFLAGS: 00010283 RAX: ffffffff823ed269 RBX: 0000000000000001 RCX: 0000000000040000 RDX: ffffc90012e07000 RSI: 0000000000009f89 RDI: 0000000000009f8a RBP: 0000000000000001 R08: ffffffff823ecf39 R09: ffffed1003c2364b R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1100f5d60cf R13: dffffc0000000000 R14: ffff88801ed60000 R15: ffff88807aeb0678 FS: 00007f6b065a1700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f155853e000 CR3: 000000007b1f3000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_mb_find_by_goal+0x11c/0xd20 fs/ext4/mballoc.c:2159 ext4_mb_regular_allocator+0x250/0x38c0 fs/ext4/mballoc.c:2613 ext4_mb_new_blocks+0xe5f/0x44a0 fs/ext4/mballoc.c:5786 ext4_ext_map_blocks+0x1973/0x7210 fs/ext4/extents.c:4286 ext4_map_blocks+0xa4c/0x1cf0 fs/ext4/inode.c:623 ext4_iomap_alloc fs/ext4/inode.c:3296 [inline] ext4_iomap_begin+0x8e4/0xd30 fs/ext4/inode.c:3346 iomap_iter+0x677/0xec0 fs/iomap/iter.c:91 __iomap_dio_rw+0xe1b/0x22e0 fs/iomap/direct-io.c:597 iomap_dio_rw+0x46/0xa0 fs/iomap/direct-io.c:688 ext4_dio_write_iter fs/ext4/file.c:597 [inline] ext4_file_write_iter+0x1509/0x1930 fs/ext4/file.c:708 call_write_iter include/linux/fs.h:1868 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x7ec/0xc10 fs/read_write.c:584 ksys_pwrite64 fs/read_write.c:699 [inline] __do_sys_pwrite64 fs/read_write.c:709 [inline] __se_sys_pwrite64 fs/read_write.c:706 [inline] __x64_sys_pwrite64+0x1aa/0x230 fs/read_write.c:706 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f6b0588c169 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:00007f6b065a1168 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 RAX: ffffffffffffffda RBX: 00007f6b059abf80 RCX: 00007f6b0588c169 RDX: 0000000000000001 RSI: 0000000020000080 RDI: 0000000000000004 RBP: 00007f6b058e7ca1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff4f80eeff R14: 00007f6b065a1300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ext4_get_group_info+0x399/0x3a0 fs/ext4/ext4.h:3241 Code: 4c ff 8b 74 24 04 48 c7 c7 c0 38 0c 8d 4c 89 f2 e8 2c fd 2d 02 43 80 3c 2c 00 0f 85 23 fd ff ff e9 26 fd ff ff e8 07 bd 4c ff <0f> 0b 0f 1f 44 00 00 55 41 57 41 56 41 54 53 48 89 fb 49 bf 00 00 RSP: 0018:ffffc90016746b00 EFLAGS: 00010283 RAX: ffffffff823ed269 RBX: 0000000000000001 RCX: 0000000000040000 RDX: ffffc90012e07000 RSI: 0000000000009f89 RDI: 0000000000009f8a RBP: 0000000000000001 R08: ffffffff823ecf39 R09: ffffed1003c2364b R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1100f5d60cf R13: dffffc0000000000 R14: ffff88801ed60000 R15: ffff88807aeb0678 FS: 00007f6b065a1700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f155853e000 CR3: 000000007b1f3000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400