loop0: detected capacity change from 0 to 512 EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. netlink: 8 bytes leftover after parsing attributes in process `syz.0.0'. loop0: detected capacity change from 512 to 0 syz.0.0: attempt to access beyond end of device loop0: rw=524288, sector=10, nr_sectors = 2 limit=0 syz.0.0: attempt to access beyond end of device loop0: rw=524288, sector=12, nr_sectors = 2 limit=0 syz.0.0: attempt to access beyond end of device loop0: rw=524288, sector=14, nr_sectors = 2 limit=0 syz.0.0: attempt to access beyond end of device loop0: rw=524288, sector=16, nr_sectors = 2 limit=0 syz.0.0: attempt to access beyond end of device loop0: rw=524288, sector=18, nr_sectors = 2 limit=0 syz.0.0: attempt to access beyond end of device loop0: rw=524288, sector=20, nr_sectors = 2 limit=0 syz.0.0: attempt to access beyond end of device loop0: rw=524288, sector=22, nr_sectors = 2 limit=0 syz.0.0: attempt to access beyond end of device loop0: rw=524288, sector=24, nr_sectors = 2 limit=0 syz.0.0: attempt to access beyond end of device loop0: rw=524288, sector=28, nr_sectors = 2 limit=0 syz.0.0: attempt to access beyond end of device loop0: rw=12288, sector=26, nr_sectors = 2 limit=0 EXT4-fs error (device loop0): ext4_get_inode_loc:4573: inode #18: block 13: comm syz.0.0: unable to read itable block Buffer I/O error on dev loop0, logical block 1, lost sync page write EXT4-fs (loop0): I/O error while writing superblock EXT4-fs error (device loop0): ext4_check_bdev_write_error:225: comm syz.0.0: Error while async write back metadata Buffer I/O error on dev loop0, logical block 1, lost sync page write EXT4-fs (loop0): I/O error while writing superblock EXT4-fs error (device loop0): ext4_check_bdev_write_error:225: comm syz.0.0: Error while async write back metadata EXT4-fs warning (device loop0): ext4_end_bio:346: I/O error 10 writing to inode 18 starting block 193) Buffer I/O error on device loop0, logical block 193 EXT4-fs warning (device loop0): ext4_end_bio:346: I/O error 10 writing to inode 18 starting block 195) Buffer I/O error on device loop0, logical block 195 Buffer I/O error on device loop0, logical block 196 EXT4-fs warning (device loop0): ext4_end_bio:346: I/O error 10 writing to inode 18 starting block 197) Buffer I/O error on device loop0, logical block 197 Buffer I/O error on device loop0, logical block 198 Buffer I/O error on device loop0, logical block 199 Buffer I/O error on device loop0, logical block 200 Buffer I/O error on device loop0, logical block 201 Buffer I/O error on device loop0, logical block 202 Buffer I/O error on device loop0, logical block 203 EXT4-fs warning (device loop0): ext4_end_bio:346: I/O error 10 writing to inode 18 starting block 193) ------------[ cut here ]------------ kernel BUG at fs/ext4/mballoc.c:4687! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5314 Comm: syz.0.0 Not tainted 6.13.0-rc4-syzkaller-00110-g4099a71718b0 #0 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+0x690/0x700 fs/ext4/mballoc.c:4687 Code: 40 6e af 8e 4c 89 e6 48 89 ea e8 9b db 9b 02 e9 be fc ff ff e8 31 8b 40 ff 90 0f 0b e8 29 8b 40 ff 90 0f 0b e8 21 8b 40 ff 90 <0f> 0b e8 19 8b 40 ff 90 0f 0b 48 8b 0c 24 80 e1 07 80 c1 03 38 c1 RSP: 0018:ffffc9000d4d6ca8 EFLAGS: 00010287 RAX: ffffffff825ee8bf RBX: 00000000fffffff8 RCX: 0000000000100000 RDX: ffffc9000e93a000 RSI: 0000000000010646 RDI: 0000000000010647 RBP: 0000000000000000 R08: ffffffff825ee5bf R09: 1ffff110087618a0 R10: dffffc0000000000 R11: ffffed10087618a1 R12: ffff888043b0c518 R13: 1ffff110087602df R14: 0000000000000014 R15: 1ffff110087618a3 FS: 00007f08e8e646c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000000406ae000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_mb_use_preallocated+0x680/0x1420 fs/ext4/mballoc.c:4904 ext4_mb_new_blocks+0x6ef/0x4e00 fs/ext4/mballoc.c:6208 ext4_alloc_branch fs/ext4/indirect.c:340 [inline] ext4_ind_map_blocks+0x108c/0x29e0 fs/ext4/indirect.c:635 ext4_map_create_blocks fs/ext4/inode.c:518 [inline] ext4_map_blocks+0x85d/0x1990 fs/ext4/inode.c:702 mpage_map_one_extent fs/ext4/inode.c:2219 [inline] mpage_map_and_submit_extent fs/ext4/inode.c:2272 [inline] ext4_do_writepages+0x15ac/0x3df0 fs/ext4/inode.c:2735 ext4_writepages+0x213/0x3c0 fs/ext4/inode.c:2824 do_writepages+0x35f/0x880 mm/page-writeback.c:2702 filemap_fdatawrite_wbc mm/filemap.c:397 [inline] __filemap_fdatawrite_range mm/filemap.c:430 [inline] file_write_and_wait_range+0x2a3/0x3c0 mm/filemap.c:787 generic_buffers_fsync_noflush+0x71/0x180 fs/buffer.c:600 ext4_fsync_nojournal fs/ext4/fsync.c:88 [inline] ext4_sync_file+0x40a/0xb90 fs/ext4/fsync.c:151 vfs_fsync_range fs/sync.c:187 [inline] vfs_fsync fs/sync.c:201 [inline] do_fsync fs/sync.c:212 [inline] __do_sys_fsync fs/sync.c:217 [inline] __se_sys_fsync fs/sync.c:215 [inline] __x64_sys_fsync+0x18e/0x1f0 fs/sync.c:215 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f08e7f85d29 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:00007f08e8e64038 EFLAGS: 00000246 ORIG_RAX: 000000000000004a RAX: ffffffffffffffda RBX: 00007f08e8175fa0 RCX: 00007f08e7f85d29 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007f08e8001b08 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f08e8175fa0 R15: 00007ffeb4dd8f58 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ext4_mb_use_inode_pa+0x690/0x700 fs/ext4/mballoc.c:4687 Code: 40 6e af 8e 4c 89 e6 48 89 ea e8 9b db 9b 02 e9 be fc ff ff e8 31 8b 40 ff 90 0f 0b e8 29 8b 40 ff 90 0f 0b e8 21 8b 40 ff 90 <0f> 0b e8 19 8b 40 ff 90 0f 0b 48 8b 0c 24 80 e1 07 80 c1 03 38 c1 RSP: 0018:ffffc9000d4d6ca8 EFLAGS: 00010287 RAX: ffffffff825ee8bf RBX: 00000000fffffff8 RCX: 0000000000100000 RDX: ffffc9000e93a000 RSI: 0000000000010646 RDI: 0000000000010647 RBP: 0000000000000000 R08: ffffffff825ee5bf R09: 1ffff110087618a0 R10: dffffc0000000000 R11: ffffed10087618a1 R12: ffff888043b0c518 R13: 1ffff110087602df R14: 0000000000000014 R15: 1ffff110087618a3 FS: 00007f08e8e646c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000000406ae000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400