new mount options do not match the existing superblock, will be ignored ------------[ cut here ]------------ Trying to write to read-only block-device loop3 (partno 0) WARNING: CPU: 1 PID: 6444 at block/blk-core.c:705 bio_check_ro block/blk-core.c:705 [inline] WARNING: CPU: 1 PID: 6444 at block/blk-core.c:705 submit_bio_checks+0x1577/0x18d0 block/blk-core.c:833 Modules linked in: CPU: 1 PID: 6444 Comm: kmmpd-loop3 Not tainted 5.10.56 #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+0x1577/0x18d0 block/blk-core.c:833 Code: 03 00 00 45 8b a4 24 64 05 00 00 48 89 ef 48 8d 74 24 50 e8 6b 36 fe ff 48 c7 c7 a0 51 3a 84 48 89 c6 44 89 e2 e8 18 ca d3 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:ffff888041eefae8 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 1ffff110083ddf63 RCX: 0000000000000000 RDX: ffff888040e69940 RSI: ffffffff812930d3 RDI: ffffed10083ddf4f RBP: ffff888041529200 R08: 0000000000000001 R09: ffff88806cf1ff9b R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff88800d932430 R14: ffff888041529210 R15: ffff888041529208 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4dac9b3718 CR3: 0000000021a7e000 CR4: 0000000000350ee0 Call Trace: submit_bio_noacct+0x7a/0xce0 block/blk-core.c:1045 submit_bio+0xf3/0x4e0 block/blk-core.c:1130 submit_bh_wbc.constprop.0+0x580/0x770 fs/buffer.c:3054 write_mmp_block+0x2d0/0x650 fs/ext4/mmp.c:55 kmmpd+0x3f8/0x9d0 fs/ext4/mmp.c:167 kthread+0x38f/0x470 kernel/kthread.c:292 ret_from_fork+0x22/0x30 arch/x86/entry/entry_64.S:296 irq event stamp: 255 hardirqs last enabled at (261): [] console_trylock_spinning kernel/printk/printk.c:1847 [inline] hardirqs last enabled at (261): [] vprintk_emit+0x482/0x4d0 kernel/printk/printk.c:2051 hardirqs last disabled at (266): [] console_trylock_spinning kernel/printk/printk.c:1826 [inline] hardirqs last disabled at (266): [] vprintk_emit+0x414/0x4d0 kernel/printk/printk.c:2051 softirqs last enabled at (160): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (151): [] asm_call_irq_on_stack+0x12/0x20 ---[ end trace 3c3c895cb5804204 ]--- EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue ext4 filesystem being mounted at /syzkaller-testdir693850644/syzkaller.RIzcXY/83/file0 supports timestamps until 2038 (0x7fffffff) netlink: 'syz-executor.0': attribute type 5 has an invalid length. EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue ext4 filesystem being mounted at /syzkaller-testdir693850644/syzkaller.RIzcXY/84/file0 supports timestamps until 2038 (0x7fffffff) netlink: 'syz-executor.0': attribute type 5 has an invalid length. netlink: 'syz-executor.0': attribute type 5 has an invalid length. EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue ext4 filesystem being mounted at /syzkaller-testdir693850644/syzkaller.RIzcXY/85/file0 supports timestamps until 2038 (0x7fffffff) netlink: 'syz-executor.0': attribute type 5 has an invalid length. netlink: 'syz-executor.3': attribute type 5 has an invalid length. netlink: 'syz-executor.3': attribute type 5 has an invalid length. netlink: 'syz-executor.3': attribute type 5 has an invalid length. FAT-fs (loop5): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop5): Directory bread(block 72) failed FAT-fs (loop5): Directory bread(block 73) failed FAT-fs (loop5): Directory bread(block 74) failed FAT-fs (loop5): Directory bread(block 75) failed FAT-fs (loop5): Directory bread(block 76) failed FAT-fs (loop5): Directory bread(block 77) failed FAT-fs (loop5): Directory bread(block 78) failed FAT-fs (loop5): Directory bread(block 79) failed FAT-fs (loop5): Directory bread(block 80) failed FAT-fs (loop5): Directory bread(block 81) failed FAT-fs (loop5): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) audit: type=1401 audit(1629512458.338:9): op=fscreate invalid_context="8" audit: type=1401 audit(1629512458.523:10): op=fscreate invalid_context="8" audit: type=1401 audit(1629512458.551:11): op=fscreate invalid_context="8" audit: type=1401 audit(1629512458.949:12): op=fscreate invalid_context="8" audit: type=1401 audit(1629512458.950:13): op=fscreate invalid_context="8" FAT-fs (loop5): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop5): Directory bread(block 72) failed FAT-fs (loop5): Directory bread(block 73) failed FAT-fs (loop5): Directory bread(block 74) failed FAT-fs (loop5): Directory bread(block 75) failed FAT-fs (loop5): Directory bread(block 76) failed FAT-fs (loop5): Directory bread(block 77) failed FAT-fs (loop5): Directory bread(block 78) failed FAT-fs (loop5): Directory bread(block 79) failed FAT-fs (loop5): Directory bread(block 80) failed FAT-fs (loop5): Directory bread(block 81) failed FAT-fs (loop5): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) audit: type=1401 audit(1629512459.148:14): op=fscreate invalid_context="8" audit: type=1401 audit(1629512459.182:15): op=fscreate invalid_context="8" FAT-fs (loop5): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop5): Directory bread(block 72) failed FAT-fs (loop5): Directory bread(block 73) failed FAT-fs (loop5): Directory bread(block 74) failed FAT-fs (loop5): Directory bread(block 75) failed FAT-fs (loop5): Directory bread(block 76) failed FAT-fs (loop5): Directory bread(block 77) failed FAT-fs (loop5): Directory bread(block 78) failed FAT-fs (loop5): Directory bread(block 79) failed FAT-fs (loop5): Directory bread(block 80) failed FAT-fs (loop5): Directory bread(block 81) failed FAT-fs (loop5): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop2): Directory bread(block 72) failed FAT-fs (loop2): Directory bread(block 73) failed FAT-fs (loop2): Directory bread(block 74) failed FAT-fs (loop2): Directory bread(block 75) failed FAT-fs (loop2): Directory bread(block 76) failed FAT-fs (loop2): Directory bread(block 77) failed FAT-fs (loop7): Directory bread(block 72) failed FAT-fs (loop7): Directory bread(block 73) failed FAT-fs (loop2): Directory bread(block 78) failed FAT-fs (loop7): Directory bread(block 74) failed FAT-fs (loop7): Directory bread(block 75) failed FAT-fs (loop7): Directory bread(block 76) failed FAT-fs (loop7): Directory bread(block 77) failed FAT-fs (loop7): Directory bread(block 78) failed FAT-fs (loop7): Directory bread(block 79) failed FAT-fs (loop7): Directory bread(block 80) failed FAT-fs (loop7): Directory bread(block 81) failed FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop2): Directory bread(block 79) failed FAT-fs (loop5): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop2): Directory bread(block 80) failed FAT-fs (loop2): Directory bread(block 81) failed FAT-fs (loop5): Directory bread(block 72) failed FAT-fs (loop0): Directory bread(block 72) failed FAT-fs (loop0): Directory bread(block 73) failed FAT-fs (loop0): Directory bread(block 74) failed FAT-fs (loop0): Directory bread(block 75) failed FAT-fs (loop0): Directory bread(block 76) failed FAT-fs (loop5): Directory bread(block 73) failed FAT-fs (loop0): Directory bread(block 77) failed FAT-fs (loop5): Directory bread(block 74) failed FAT-fs (loop0): Directory bread(block 78) failed FAT-fs (loop0): Directory bread(block 79) failed FAT-fs (loop0): Directory bread(block 80) failed FAT-fs (loop0): Directory bread(block 81) failed FAT-fs (loop5): Directory bread(block 75) failed FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop5): Directory bread(block 76) failed FAT-fs (loop5): Directory bread(block 77) failed FAT-fs (loop5): Directory bread(block 78) failed FAT-fs (loop5): Directory bread(block 79) failed FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop5): Directory bread(block 80) failed FAT-fs (loop5): Directory bread(block 81) failed FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop7): Directory bread(block 72) failed FAT-fs (loop5): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop7): Directory bread(block 73) failed FAT-fs (loop7): Directory bread(block 74) failed FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop7): Directory bread(block 75) failed FAT-fs (loop7): Directory bread(block 76) failed FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop0): Directory bread(block 72) failed FAT-fs (loop0): Directory bread(block 73) failed FAT-fs (loop0): Directory bread(block 74) failed FAT-fs (loop0): Directory bread(block 75) failed FAT-fs (loop7): Directory bread(block 77) failed FAT-fs (loop7): Directory bread(block 78) failed FAT-fs (loop0): Directory bread(block 76) failed FAT-fs (loop0): Directory bread(block 77) failed FAT-fs (loop7): Directory bread(block 79) failed FAT-fs (loop0): Directory bread(block 78) failed FAT-fs (loop0): Directory bread(block 79) failed FAT-fs (loop0): Directory bread(block 80) failed FAT-fs (loop7): Directory bread(block 80) failed FAT-fs (loop7): Directory bread(block 81) failed FAT-fs (loop0): Directory bread(block 81) failed FAT-fs (loop2): Directory bread(block 72) failed FAT-fs (loop2): Directory bread(block 73) failed FAT-fs (loop2): Directory bread(block 74) failed FAT-fs (loop2): Directory bread(block 75) failed FAT-fs (loop2): Directory bread(block 76) failed FAT-fs (loop2): Directory bread(block 77) failed FAT-fs (loop2): Directory bread(block 78) failed FAT-fs (loop2): Directory bread(block 79) failed FAT-fs (loop2): Directory bread(block 80) failed FAT-fs (loop2): Directory bread(block 81) failed FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) audit: type=1401 audit(1629512460.414:16): op=fscreate invalid_context="8" FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) audit: type=1401 audit(1629512460.424:17): op=fscreate invalid_context="8" FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop2): Directory bread(block 72) failed FAT-fs (loop2): Directory bread(block 73) failed FAT-fs (loop2): Directory bread(block 74) failed FAT-fs (loop2): Directory bread(block 75) failed FAT-fs (loop2): Directory bread(block 76) failed FAT-fs (loop2): Directory bread(block 77) failed FAT-fs (loop2): Directory bread(block 78) failed FAT-fs (loop2): Directory bread(block 79) failed FAT-fs (loop2): Directory bread(block 80) failed FAT-fs (loop2): Directory bread(block 81) failed FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop0): Directory bread(block 72) failed FAT-fs (loop0): Directory bread(block 73) failed FAT-fs (loop0): Directory bread(block 74) failed FAT-fs (loop0): Directory bread(block 75) failed FAT-fs (loop0): Directory bread(block 76) failed audit: type=1401 audit(1629512460.744:18): op=fscreate invalid_context="8" FAT-fs (loop0): Directory bread(block 77) failed FAT-fs (loop0): Directory bread(block 78) failed FAT-fs (loop0): Directory bread(block 79) failed FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop0): Directory bread(block 80) failed FAT-fs (loop0): Directory bread(block 81) failed FAT-fs (loop7): Directory bread(block 72) failed FAT-fs (loop7): Directory bread(block 73) failed FAT-fs (loop7): Directory bread(block 74) failed FAT-fs (loop7): Directory bread(block 75) failed FAT-fs (loop7): Directory bread(block 76) failed FAT-fs (loop7): Directory bread(block 77) failed FAT-fs (loop7): Directory bread(block 78) failed FAT-fs (loop7): Directory bread(block 79) failed FAT-fs (loop7): Directory bread(block 80) failed FAT-fs (loop7): Directory bread(block 81) failed FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) kauditd_printk_skb: 3 callbacks suppressed audit: type=1326 audit(1629512465.928:22): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=7048 comm="syz-executor.2" exe="/syz-executor.2" sig=9 arch=c000003e syscall=231 compat=0 ip=0x466609 code=0x0 audit: type=1326 audit(1629512465.939:23): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=7048 comm="syz-executor.2" exe="/syz-executor.2" sig=31 arch=c000003e syscall=202 compat=0 ip=0x466609 code=0x0