wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready ------------[ cut here ]------------ Trying to write to read-only block-device loop7 (partno 0) WARNING: CPU: 0 PID: 3808 at block/blk-core.c:704 bio_check_ro block/blk-core.c:704 [inline] WARNING: CPU: 0 PID: 3808 at block/blk-core.c:704 submit_bio_checks+0x1577/0x18d0 block/blk-core.c:832 Modules linked in: CPU: 0 PID: 3808 Comm: syz-executor.7 Not tainted 5.10.69 #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:704 [inline] RIP: 0010:submit_bio_checks+0x1577/0x18d0 block/blk-core.c:832 Code: 03 00 00 45 8b a4 24 a4 05 00 00 48 89 ef 48 8d 74 24 50 e8 bb 32 fe ff 48 c7 c7 c0 56 3a 84 48 89 c6 44 89 e2 e8 d2 b5 ea 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:ffff8880424672b8 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 1ffff1100848ce5d RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff812938f3 RDI: ffffed100848ce49 RBP: ffff888017800500 R08: 0000000000000001 R09: ffff88806ce2fb4f R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff88800d66d470 R14: ffff888017800510 R15: ffff888017800508 FS: 00007f5c02bed700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007feba4d55894 CR3: 0000000016b5e000 CR4: 0000000000350ef0 Call Trace: submit_bio_noacct+0x7a/0xce0 block/blk-core.c:1044 submit_bio+0xf3/0x4e0 block/blk-core.c:1129 submit_bh_wbc.constprop.0+0x580/0x770 fs/buffer.c:3054 __block_write_full_page+0x7d3/0x1050 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/0xef0 mm/page-writeback.c:2246 generic_writepages mm/page-writeback.c:2337 [inline] generic_writepages+0xe2/0x150 mm/page-writeback.c:2326 do_writepages+0xee/0x290 mm/page-writeback.c:2352 __filemap_fdatawrite_range+0x247/0x2f0 mm/filemap.c:422 filemap_write_and_wait_range mm/filemap.c:655 [inline] filemap_write_and_wait_range+0x65/0x100 mm/filemap.c:649 filemap_write_and_wait include/linux/fs.h:2649 [inline] __sync_blockdev fs/block_dev.c:530 [inline] sync_blockdev fs/block_dev.c:539 [inline] __blkdev_put+0x69c/0x890 fs/block_dev.c:1791 blkdev_close+0x8c/0xb0 fs/block_dev.c:1875 __fput+0x285/0x980 fs/file_table.c:281 task_work_run+0xe2/0x1a0 kernel/task_work.c:151 get_signal+0xfaf/0x2200 kernel/signal.c:2562 arch_do_signal+0x88/0x1b70 arch/x86/kernel/signal.c:805 exit_to_user_mode_loop kernel/entry/common.c:161 [inline] exit_to_user_mode_prepare+0xf7/0x160 kernel/entry/common.c:191 syscall_exit_to_user_mode+0x38/0x230 kernel/entry/common.c:266 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x466609 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f5c02bed188 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 RAX: 0000000000f49000 RBX: 000000000056c038 RCX: 0000000000466609 RDX: 00000000fffffd6b RSI: 0000000020000000 RDI: 0000000000000006 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c038 R13: 00007ffd26580bff R14: 00007f5c02bed300 R15: 0000000000022000 irq event stamp: 144885 hardirqs last enabled at (144895): [] console_unlock+0x929/0xb30 kernel/printk/printk.c:2552 hardirqs last disabled at (144904): [] console_unlock+0x835/0xb30 kernel/printk/printk.c:2467 softirqs last enabled at (144126): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (144075): [] asm_call_irq_on_stack+0x12/0x20 ---[ end trace 2e083ec298f3ff28 ]--- wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready audit: type=1400 audit(1634675348.926:7): avc: denied { open } for pid=3959 comm="syz-executor.3" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 audit: type=1400 audit(1634675348.926:8): avc: denied { kernel } for pid=3959 comm="syz-executor.3" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready capability: warning: `syz-executor.4' uses deprecated v2 capabilities in a way that may be insecure kmemleak: 57 new suspected memory leaks (see /sys/kernel/debug/kmemleak)