------------[ cut here ]------------ Trying to write to read-only block-device loop5 (partno 0) WARNING: CPU: 0 PID: 317 at block/blk-core.c:705 bio_check_ro block/blk-core.c:705 [inline] WARNING: CPU: 0 PID: 317 at block/blk-core.c:705 submit_bio_checks+0x1511/0x1850 block/blk-core.c:833 Modules linked in: CPU: 0 PID: 317 Comm: kworker/u4:8 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 Workqueue: writeback wb_workfn (flush-7:5) 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:ffff88803b2270d8 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 1ffff11007644e21 RCX: 0000000000000000 RDX: ffff88803b218000 RSI: ffffffff812912c3 RDI: ffffed1007644e0d RBP: ffff8880404d0d00 R08: 0000000000000001 R09: ffff88806ce2fb4f R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff88800d502430 R14: ffff8880404d0d10 R15: ffff8880404d0d08 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000001ccec58 CR3: 000000001b242000 CR4: 0000000000350ef0 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 __block_write_full_page+0x7c5/0x1020 fs/buffer.c:1810 block_write_full_page+0x21c/0x290 fs/buffer.c:2980 __writepage+0x67/0x180 mm/page-writeback.c:2311 write_cache_pages+0x57f/0xee0 mm/page-writeback.c:2246 generic_writepages mm/page-writeback.c:2337 [inline] generic_writepages+0xed/0x160 mm/page-writeback.c:2326 do_writepages+0xfc/0x2a0 mm/page-writeback.c:2352 __writeback_single_inode+0x10a/0xd90 fs/fs-writeback.c:1467 writeback_sb_inodes+0x570/0xfc0 fs/fs-writeback.c:1729 __writeback_inodes_wb+0xbe/0x270 fs/fs-writeback.c:1798 wb_writeback+0x752/0xaf0 fs/fs-writeback.c:1904 wb_check_old_data_flush fs/fs-writeback.c:2006 [inline] wb_do_writeback fs/fs-writeback.c:2059 [inline] wb_workfn+0x825/0x1030 fs/fs-writeback.c:2088 process_one_work+0x9ac/0x1580 kernel/workqueue.c:2270 worker_thread+0x61d/0x1310 kernel/workqueue.c:2416 kthread+0x38f/0x470 kernel/kthread.c:292 ret_from_fork+0x22/0x30 arch/x86/entry/entry_64.S:296 irq event stamp: 241287 hardirqs last enabled at (241295): [] console_unlock+0x926/0xb30 kernel/printk/printk.c:2552 hardirqs last disabled at (241304): [] console_unlock+0x832/0xb30 kernel/printk/printk.c:2467 softirqs last enabled at (240614): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (240563): [] asm_call_irq_on_stack+0x12/0x20 ---[ end trace a5d39a672c9582da ]--- FAT-fs (loop5): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop1): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) syz-executor.7 (7729) used greatest stack depth: 23576 bytes left FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. 9pnet_virtio: no channels available for device 127.0.0.1 9pnet_virtio: no channels available for device 127.0.0.1 9pnet_virtio: no channels available for device 127.0.0.1 9pnet_virtio: no channels available for device 127.0.0.1 9pnet_virtio: no channels available for device 127.0.0.1 9pnet_virtio: no channels available for device 127.0.0.1 9pnet_virtio: no channels available for device 127.0.0.1 9pnet_virtio: no channels available for device 127.0.0.1 9pnet_virtio: no channels available for device 127.0.0.1 9pnet_virtio: no channels available for device 127.0.0.1 audit: type=1400 audit(1630412629.989:10): avc: denied { module_load } for pid=8242 comm="syz-executor.5" path=2F6D656D66643A202864656C6574656429 dev="tmpfs" ino=1192 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