EXT4-fs error (device loop0): ext4_do_update_inode:5714: inode #19: comm kworker/u4:6: corrupted inode contents EXT4-fs error (device loop0): ext4_dirty_inode:6634: inode #19: comm kworker/u4:6: mark_inode_dirty error EXT4-fs error (device loop0): ext4_do_update_inode:5714: inode #19: comm kworker/u4:6: corrupted inode contents EXT4-fs error (device loop0): ext4_dirty_inode:6634: inode #19: comm kworker/u4:6: mark_inode_dirty error EXT4-fs error (device loop0): ext4_do_update_inode:5714: inode #19: comm kworker/u4:6: corrupted inode contents EXT4-fs error (device loop0): mpage_map_and_submit_extent:2537: inode #19: comm kworker/u4:6: mark_inode_dirty error EXT4-fs error (device loop0): mpage_map_and_submit_extent:2541: comm kworker/u4:6: Failed to mark inode 19 dirty kworker/u4:6: attempt to access beyond end of device loop0: rw=1, sector=258, nr_sectors = 24 limit=64 EXT4-fs warning (device loop0): ext4_end_bio:364: I/O error 10 writing to inode 19 starting block 129) Buffer I/O error on device loop0, logical block 129 Buffer I/O error on device loop0, logical block 130 Buffer I/O error on device loop0, logical block 131 Buffer I/O error on device loop0, logical block 132 Buffer I/O error on device loop0, logical block 133 Buffer I/O error on device loop0, logical block 134 Buffer I/O error on device loop0, logical block 135 Buffer I/O error on device loop0, logical block 136 Buffer I/O error on device loop0, logical block 137 Buffer I/O error on device loop0, logical block 138 EXT4-fs error (device loop0): ext4_do_update_inode:5714: inode #19: comm kworker/u4:6: corrupted inode contents EXT4-fs error (device loop0): ext4_dirty_inode:6634: inode #19: comm kworker/u4:6: mark_inode_dirty error ------------[ cut here ]------------ kernel BUG at fs/ext4/mballoc.c:4780! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 181 Comm: kworker/u4:6 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 Workqueue: writeback wb_workfn (flush-7:0) RIP: 0010:ext4_mb_use_inode_pa+0x6bf/0x720 fs/ext4/mballoc.c:4780 Code: e8 96 a1 a2 ff 48 ba 00 00 00 00 00 fc ff df e9 d7 fa ff ff e8 62 c1 31 ff 90 0f 0b e8 5a c1 31 ff 90 0f 0b e8 52 c1 31 ff 90 <0f> 0b e8 4a c1 31 ff 90 0f 0b 48 8b 0c 24 48 83 c1 54 80 e1 07 80 RSP: 0018:ffffc90001876560 EFLAGS: 00010293 RAX: ffffffff82954e3e RBX: 00000000ffffffec RCX: ffff8880331c8000 RDX: 0000000000000000 RSI: 0000000000000034 RDI: 0000000000000020 RBP: 1ffff11008632f29 R08: ffff88804319c07b R09: 1ffff1100863380f R10: dffffc0000000000 R11: ffffed1008633810 R12: 0000000000000000 R13: 0000000000000034 R14: 1ffff11008633812 R15: ffff88804319c090 FS: 0000000000000000(0000) GS:ffff88808c519000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff4ef7e33f6 CR3: 00000000136cd000 CR4: 0000000000352ef0 Call Trace: ext4_mb_use_preallocated+0x638/0x13e0 fs/ext4/mballoc.c:4997 ext4_mb_new_blocks+0x5a0/0x4530 fs/ext4/mballoc.c:6301 ext4_alloc_branch fs/ext4/indirect.c:340 [inline] ext4_ind_map_blocks+0xe96/0x22a0 fs/ext4/indirect.c:635 ext4_map_create_blocks+0xbb/0x530 fs/ext4/inode.c:635 ext4_map_blocks+0x7e4/0x1240 fs/ext4/inode.c:826 mpage_map_one_extent fs/ext4/inode.c:2379 [inline] mpage_map_and_submit_extent fs/ext4/inode.c:2469 [inline] ext4_do_writepages+0x18d5/0x4480 fs/ext4/inode.c:2926 ext4_writepages+0x241/0x3b0 fs/ext4/inode.c:3020 do_writepages+0x338/0x560 mm/page-writeback.c:2571 __writeback_single_inode+0x136/0x1220 fs/fs-writeback.c:1788 writeback_sb_inodes+0x9de/0x1b00 fs/fs-writeback.c:2099 __writeback_inodes_wb+0x114/0x240 fs/fs-writeback.c:2175 wb_writeback+0x42f/0xad0 fs/fs-writeback.c:2286 wb_check_start_all fs/fs-writeback.c:2412 [inline] wb_do_writeback fs/fs-writeback.c:2459 [inline] wb_workfn+0x980/0x10f0 fs/fs-writeback.c:2497 process_one_work kernel/workqueue.c:3322 [inline] process_scheduled_works+0xa88/0x14c0 kernel/workqueue.c:3405 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486 kthread+0x38b/0x480 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ext4_mb_use_inode_pa+0x6bf/0x720 fs/ext4/mballoc.c:4780 Code: e8 96 a1 a2 ff 48 ba 00 00 00 00 00 fc ff df e9 d7 fa ff ff e8 62 c1 31 ff 90 0f 0b e8 5a c1 31 ff 90 0f 0b e8 52 c1 31 ff 90 <0f> 0b e8 4a c1 31 ff 90 0f 0b 48 8b 0c 24 48 83 c1 54 80 e1 07 80 RSP: 0018:ffffc90001876560 EFLAGS: 00010293 RAX: ffffffff82954e3e RBX: 00000000ffffffec RCX: ffff8880331c8000 RDX: 0000000000000000 RSI: 0000000000000034 RDI: 0000000000000020 RBP: 1ffff11008632f29 R08: ffff88804319c07b R09: 1ffff1100863380f R10: dffffc0000000000 R11: ffffed1008633810 R12: 0000000000000000 R13: 0000000000000034 R14: 1ffff11008633812 R15: ffff88804319c090 FS: 0000000000000000(0000) GS:ffff88808c519000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff4ef7e33f6 CR3: 00000000136cd000 CR4: 0000000000352ef0