loop0: detected capacity change from 0 to 512 EXT4-fs error (device loop0): ext4_iget_extra_inode:5104: inode #15: comm syz.0.0: corrupted in-inode xattr: invalid ea_ino EXT4-fs error (device loop0): ext4_orphan_get:1397: comm syz.0.0: couldn't read orphan inode 15 (err -117) EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. netem: change failed loop0: detected capacity change from 512 to 64 syz.0.0: attempt to access beyond end of device loop0: rw=2049, sector=74, nr_sectors = 24 limit=64 EXT4-fs warning (device loop0): ext4_end_bio:372: I/O error 10 writing to inode 18 starting block 37) Buffer I/O error on device loop0, logical block 37 Buffer I/O error on device loop0, logical block 38 Buffer I/O error on device loop0, logical block 39 Buffer I/O error on device loop0, logical block 40 Buffer I/O error on device loop0, logical block 41 Buffer I/O error on device loop0, logical block 42 Buffer I/O error on device loop0, logical block 43 Buffer I/O error on device loop0, logical block 44 Buffer I/O error on device loop0, logical block 45 Buffer I/O error on device loop0, logical block 46 EXT4-fs error (device loop0): ext4_do_update_inode:5653: inode #18: comm syz.0.0: corrupted inode contents EXT4-fs error (device loop0): ext4_dirty_inode:6538: inode #18: comm syz.0.0: mark_inode_dirty error EXT4-fs error (device loop0): ext4_do_update_inode:5653: inode #18: comm syz.0.0: corrupted inode contents EXT4-fs error (device loop0): ext4_dirty_inode:6538: inode #18: comm syz.0.0: mark_inode_dirty error EXT4-fs error (device loop0): ext4_do_update_inode:5653: inode #18: comm syz.0.0: corrupted inode contents EXT4-fs error (device loop0): ext4_dirty_inode:6538: inode #18: comm syz.0.0: mark_inode_dirty error ------------[ cut here ]------------ kernel BUG at fs/ext4/mballoc.c:4755! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5356 Comm: syz.0.0 Not tainted 6.16.0-syzkaller-12288-g2b38afce25c4 #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:ext4_mb_use_inode_pa+0x6c1/0x720 fs/ext4/mballoc.c:4755 Code: e8 14 d0 aa ff 48 ba 00 00 00 00 00 fc ff df e9 da fa ff ff e8 70 e4 45 ff 90 0f 0b e8 68 e4 45 ff 90 0f 0b e8 60 e4 45 ff 90 <0f> 0b e8 58 e4 45 ff 90 0f 0b 48 8b 0c 24 80 e1 07 80 c1 03 38 c1 RSP: 0018:ffffc9000f4b67e8 EFLAGS: 00010287 RAX: ffffffff8279d700 RBX: 00000000ffffffcc RCX: 0000000000100000 RDX: ffffc9000dc7a000 RSI: 000000000001324a RDI: 000000000001324b RBP: 1ffff11008769a5e R08: ffff888043b4e5eb R09: 1ffff11008769cbd R10: dffffc0000000000 R11: ffffed1008769cbe R12: 0000000000000000 R13: 0000000000000054 R14: 1ffff11008769cc0 R15: ffff888043b4e600 FS: 00007fea7f38a6c0(0000) GS:ffff88808d211000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000558dae31d168 CR3: 000000001162d000 CR4: 0000000000352ef0 Call Trace: ext4_mb_use_preallocated+0x660/0x13f0 fs/ext4/mballoc.c:4972 ext4_mb_new_blocks+0x5b4/0x4720 fs/ext4/mballoc.c:6276 ext4_alloc_branch fs/ext4/indirect.c:340 [inline] ext4_ind_map_blocks+0xe21/0x21b0 fs/ext4/indirect.c:635 ext4_map_create_blocks fs/ext4/inode.c:611 [inline] ext4_map_blocks+0x7fe/0x1740 fs/ext4/inode.c:811 mpage_map_one_extent fs/ext4/inode.c:2374 [inline] mpage_map_and_submit_extent fs/ext4/inode.c:2468 [inline] ext4_do_writepages+0x16a1/0x4610 fs/ext4/inode.c:2931 ext4_writepages+0x205/0x350 fs/ext4/inode.c:3025 do_writepages+0x32e/0x550 mm/page-writeback.c:2634 filemap_fdatawrite_wbc mm/filemap.c:386 [inline] __filemap_fdatawrite_range mm/filemap.c:419 [inline] file_write_and_wait_range+0x23e/0x340 mm/filemap.c:794 generic_buffers_fsync_noflush+0x6c/0x180 fs/buffer.c:609 ext4_fsync_nojournal fs/ext4/fsync.c:88 [inline] ext4_sync_file+0x332/0xb20 fs/ext4/fsync.c:147 generic_write_sync include/linux/fs.h:3042 [inline] ext4_buffered_write_iter+0x2ca/0x3a0 fs/ext4/file.c:305 ext4_file_write_iter+0x298/0x1bc0 fs/ext4/file.c:-1 aio_write+0x535/0x7a0 fs/aio.c:1634 __io_submit_one fs/aio.c:-1 [inline] io_submit_one+0x78b/0x1310 fs/aio.c:2053 __do_sys_io_submit fs/aio.c:2112 [inline] __se_sys_io_submit+0x185/0x2f0 fs/aio.c:2082 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fea7e58ebe9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fea7f38a038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 00007fea7e7b5fa0 RCX: 00007fea7e58ebe9 RDX: 0000200000000540 RSI: 000000000000003b RDI: 00007fea7f340000 RBP: 00007fea7e611e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fea7e7b6038 R14: 00007fea7e7b5fa0 R15: 00007ffe038195f8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ext4_mb_use_inode_pa+0x6c1/0x720 fs/ext4/mballoc.c:4755 Code: e8 14 d0 aa ff 48 ba 00 00 00 00 00 fc ff df e9 da fa ff ff e8 70 e4 45 ff 90 0f 0b e8 68 e4 45 ff 90 0f 0b e8 60 e4 45 ff 90 <0f> 0b e8 58 e4 45 ff 90 0f 0b 48 8b 0c 24 80 e1 07 80 c1 03 38 c1 RSP: 0018:ffffc9000f4b67e8 EFLAGS: 00010287 RAX: ffffffff8279d700 RBX: 00000000ffffffcc RCX: 0000000000100000 RDX: ffffc9000dc7a000 RSI: 000000000001324a RDI: 000000000001324b RBP: 1ffff11008769a5e R08: ffff888043b4e5eb R09: 1ffff11008769cbd R10: dffffc0000000000 R11: ffffed1008769cbe R12: 0000000000000000 R13: 0000000000000054 R14: 1ffff11008769cc0 R15: ffff888043b4e600 FS: 00007fea7f38a6c0(0000) GS:ffff88808d211000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000558dae31d168 CR3: 000000001162d000 CR4: 0000000000352ef0