------------[ cut here ]------------ Trying to write to read-only block-device loop7 (partno 0) WARNING: CPU: 0 PID: 17164 at block/blk-core.c:705 bio_check_ro block/blk-core.c:705 [inline] WARNING: CPU: 0 PID: 17164 at block/blk-core.c:705 submit_bio_checks+0x1577/0x18d0 block/blk-core.c:833 Modules linked in: CPU: 0 PID: 17164 Comm: syz-executor.7 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:ffff888045507740 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 1ffff11008aa0eee RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff812930d3 RDI: ffffed1008aa0eda RBP: ffff888045b1b500 R08: 0000000000000001 R09: ffff88806ce2facf R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff88800d965470 R14: ffff888045b1b510 R15: ffff888045b1b508 FS: 00007fbf75109700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004e4da5 CR3: 0000000044bf2000 CR4: 0000000000350ef0 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 ext4_multi_mount_protect+0x4fe/0xab0 fs/ext4/mmp.c:350 ext4_fill_super+0xa6e3/0xcf70 fs/ext4/super.c:4781 mount_bdev+0x331/0x3f0 fs/super.c:1419 legacy_get_tree+0x105/0x220 fs/fs_context.c:592 vfs_get_tree+0x8e/0x2f0 fs/super.c:1549 do_new_mount fs/namespace.c:2881 [inline] path_mount+0x139a/0x2080 fs/namespace.c:3211 do_mount fs/namespace.c:3224 [inline] __do_sys_mount fs/namespace.c:3432 [inline] __se_sys_mount fs/namespace.c:3409 [inline] __x64_sys_mount+0x27e/0x300 fs/namespace.c:3409 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x467b2a Code: 48 c7 c2 bc ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fbf75108fa8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 0000000000467b2a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fbf75109000 RBP: 00007fbf75109040 R08: 00007fbf75109040 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000 R13: 0000000020000100 R14: 00007fbf75109000 R15: 0000000020012b00 irq event stamp: 2029 hardirqs last enabled at (2039): [] console_unlock+0x929/0xb30 kernel/printk/printk.c:2552 hardirqs last disabled at (2048): [] console_unlock+0x835/0xb30 kernel/printk/printk.c:2467 softirqs last enabled at (1464): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (1409): [] asm_call_irq_on_stack+0x12/0x20 ---[ end trace 3656579c7a5422a0 ]--- EXT4-fs (loop7): mounted filesystem without journal. Opts: ,errors=continue ext4 filesystem being mounted at /syzkaller-testdir297206699/syzkaller.OsPUkO/550/file0 supports timestamps until 2038 (0x7fffffff) EXT4-fs (loop7): mounted filesystem without journal. Opts: ,errors=continue ext4 filesystem being mounted at /syzkaller-testdir297206699/syzkaller.OsPUkO/551/file0 supports timestamps until 2038 (0x7fffffff) sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 20 00 blk_update_request: I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 16 prio class 0 EXT4-fs (loop7): mounted filesystem without journal. Opts: ,errors=continue ext4 filesystem being mounted at /syzkaller-testdir297206699/syzkaller.OsPUkO/552/file0 supports timestamps until 2038 (0x7fffffff) EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 20 00 blk_update_request: I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 14 prio class 0 EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 20 00 blk_update_request: I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 15 prio class 0 EXT4-fs (loop7): mounted filesystem without journal. Opts: ,errors=continue ext4 filesystem being mounted at /syzkaller-testdir297206699/syzkaller.OsPUkO/553/file0 supports timestamps until 2038 (0x7fffffff) EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 20 00 blk_update_request: I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 16 prio class 0 audit: type=1400 audit(2000000129.431:59): avc: denied { sys_admin } for pid=17305 comm="syz-executor.7" capability=21 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=cap_userns permissive=1 EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue audit: type=1400 audit(2000000129.863:60): avc: denied { module_load } for pid=17337 comm="syz-executor.0" path=2F6D656D66643A202864656C6574656429 dev="tmpfs" ino=278 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=system permissive=1 Module has invalid ELF structures Module has invalid ELF structures Module has invalid ELF structures Module has invalid ELF structures Module has invalid ELF structures Module has invalid ELF structures Module has invalid ELF structures Module has invalid ELF structures Module has invalid ELF structures Module has invalid ELF structures Module has invalid ELF structures Module has invalid ELF structures Module has invalid ELF structures device veth0_vlan entered promiscuous mode device veth0_vlan entered promiscuous mode device veth0_vlan entered promiscuous mode device veth0_vlan entered promiscuous mode