------------[ cut here ]------------ Trying to write to read-only block-device loop7 (partno 0) WARNING: CPU: 1 PID: 8942 at block/blk-core.c:705 bio_check_ro block/blk-core.c:705 [inline] WARNING: CPU: 1 PID: 8942 at block/blk-core.c:705 submit_bio_checks+0x1511/0x1850 block/blk-core.c:833 Modules linked in: CPU: 1 PID: 8942 Comm: kmmpd-loop7 Not tainted 5.10.60 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 RIP: 0010:bio_check_ro block/blk-core.c:705 [inline] RIP: 0010:submit_bio_checks+0x1511/0x1850 block/blk-core.c:833 Code: 02 00 00 45 8b a4 24 a4 05 00 00 48 89 ef 48 8d 74 24 50 e8 f1 41 fe ff 48 c7 c7 40 5a 3a 84 48 89 c6 44 89 e2 e8 8e 85 e7 01 <0f> 0b 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48 c1 ea 03 80 3c 02 RSP: 0018:ffff888041a9fae8 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 1ffff11008353f63 RCX: 0000000000000000 RDX: ffff8880434acbc0 RSI: ffffffff812912c3 RDI: ffffed1008353f4f RBP: ffff88800d226500 R08: 0000000000000001 R09: ffff88806cf1ffdb R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff88800ef3bc50 R14: ffff88800d226510 R15: ffff88800d226508 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000021d1c58 CR3: 00000000097fe000 CR4: 0000000000350ee0 Call Trace: submit_bio_noacct+0x7e/0xcf0 block/blk-core.c:1045 submit_bio+0x2f3/0x4e0 block/blk-core.c:1130 submit_bh_wbc.constprop.0+0x57f/0x770 fs/buffer.c:3054 write_mmp_block+0x2d9/0x660 fs/ext4/mmp.c:55 kmmpd+0x6fd/0x9d0 fs/ext4/mmp.c:245 kthread+0x38f/0x470 kernel/kthread.c:292 ret_from_fork+0x22/0x30 arch/x86/entry/entry_64.S:296 irq event stamp: 731 hardirqs last enabled at (743): [] console_unlock+0x926/0xb30 kernel/printk/printk.c:2552 hardirqs last disabled at (758): [] console_unlock+0x832/0xb30 kernel/printk/printk.c:2467 softirqs last enabled at (756): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (751): [] asm_call_irq_on_stack+0x12/0x20 ---[ end trace e049026571d3000f ]--- FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) EXT4-fs error (device loop0): ext4_quota_enable:6380: comm syz-executor.0: Bad quota inode # 4 EXT4-fs warning (device loop0): ext4_enable_quotas:6417: Failed to enable quota tracking (type=1, err=-116). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs error (device loop7): ext4_ext_check_inode:459: inode #4: comm syz-executor.7: pblk 0 bad header/extent: invalid magic - magic 0, entries 0, max 0(0), depth 0(0) EXT4-fs error (device loop7): ext4_quota_enable:6380: comm syz-executor.7: Bad quota inode # 4 EXT4-fs warning (device loop7): ext4_enable_quotas:6417: Failed to enable quota tracking (type=1, err=-117). Please run e2fsck to fix. EXT4-fs (loop6): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs (loop7): mount failed EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue ext4 filesystem being mounted at /syzkaller-testdir983268166/syzkaller.eqEVG6/117/file0 supports timestamps until 2038 (0x7fffffff) ext4 filesystem being mounted at /syzkaller-testdir034763431/syzkaller.Fbpix9/112/file0 supports timestamps until 2038 (0x7fffffff) EXT4-fs error (device loop4): ext4_ext_check_inode:459: inode #13: comm syz-executor.4: pblk 0 bad header/extent: invalid extent entries - magic f30a, entries 1, max 4(4), depth 0(0) EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue ext4 filesystem being mounted at /syzkaller-testdir547296113/syzkaller.CVrrQi/120/file0 supports timestamps until 2038 (0x7fffffff) EXT4-fs error (device loop0): ext4_quota_enable:6380: comm syz-executor.0: Bad quota inode # 4 EXT4-fs warning (device loop0): ext4_enable_quotas:6417: Failed to enable quota tracking (type=1, err=-116). Please run e2fsck to fix. EXT4-fs (loop0): mount failed FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)