audit: type=1400 audit(1574962115.883:36): avc: denied { map } for pid=7651 comm="syz-executor058" path="/root/syz-executor058528450" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 audit: type=1804 audit(1574962115.963:37): pid=7651 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=invalid_pcr cause=open_writers comm="syz-executor058" name="/root/file0" dev="sda1" ino=16484 res=1 ------------[ cut here ]------------ generic_make_request: Trying to write to read-only block-device loop0 (partno 0) WARNING: CPU: 1 PID: 7651 at block/blk-core.c:2177 bio_check_ro block/blk-core.c:2177 [inline] WARNING: CPU: 1 PID: 7651 at block/blk-core.c:2177 generic_make_request_checks+0x1fc5/0x24c0 block/blk-core.c:2282 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 7651 Comm: syz-executor058 Not tainted 4.19.86-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 panic+0x26a/0x50e kernel/panic.c:186 __warn.cold+0x20/0x53 kernel/panic.c:541 report_bug+0x263/0x2b0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] fixup_bug arch/x86/kernel/traps.c:173 [inline] do_error_trap+0x204/0x360 arch/x86/kernel/traps.c:296 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1037 RIP: 0010:bio_check_ro block/blk-core.c:2177 [inline] RIP: 0010:generic_make_request_checks+0x1fc5/0x24c0 block/blk-core.c:2282 Code: 85 1f 04 00 00 45 8b b6 e4 04 00 00 48 8d 73 a0 4c 89 e7 e8 0d 63 06 00 48 c7 c7 60 9f 80 87 48 89 c6 44 89 f2 e8 e9 92 2f fe <0f> 0b 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 RSP: 0018:ffff88807a9af1e8 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffff88807a9af2b8 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815595f6 RDI: ffffed100f535e2f RBP: ffff88807a9af2e0 R08: ffff888090aae240 R09: ffffed1015d25079 R10: ffffed1015d25078 R11: ffff8880ae9283c7 R12: ffff8880a0ddb540 R13: ffff8880a0ddb548 R14: 0000000000000000 R15: 0000000000000000 generic_make_request+0x24c/0x12d0 block/blk-core.c:2406 submit_bio+0xba/0x480 block/blk-core.c:2570 submit_bh_wbc+0x5dc/0x790 fs/buffer.c:3095 __block_write_full_page+0x76e/0x1010 fs/buffer.c:1766 block_write_full_page+0x21f/0x270 fs/buffer.c:2956 blkdev_writepage+0x25/0x30 fs/block_dev.c:581 __writepage+0x62/0xe0 mm/page-writeback.c:2308 write_cache_pages+0x971/0x1670 mm/page-writeback.c:2240 generic_writepages mm/page-writeback.c:2332 [inline] generic_writepages+0xe6/0x160 mm/page-writeback.c:2321 blkdev_writepages+0x1e/0x30 fs/block_dev.c:1965 do_writepages+0xf3/0x2a0 mm/page-writeback.c:2347 __filemap_fdatawrite_range+0x28d/0x370 mm/filemap.c:446 __filemap_fdatawrite mm/filemap.c:454 [inline] filemap_fdatawrite mm/filemap.c:459 [inline] filemap_write_and_wait mm/filemap.c:640 [inline] filemap_write_and_wait+0x47/0xd0 mm/filemap.c:635 __sync_blockdev fs/block_dev.c:463 [inline] sync_blockdev fs/block_dev.c:472 [inline] __blkdev_put+0x204/0x810 fs/block_dev.c:1797 blkdev_put+0x98/0x560 fs/block_dev.c:1866 blkdev_close+0x8b/0xb0 fs/block_dev.c:1873 __fput+0x2dd/0x8b0 fs/file_table.c:278 ____fput+0x16/0x20 fs/file_table.c:309 task_work_run+0x145/0x1c0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x994/0x2fa0 kernel/exit.c:876 do_group_exit+0x135/0x370 kernel/exit.c:979 __do_sys_exit_group kernel/exit.c:990 [inline] __se_sys_exit_group kernel/exit.c:988 [inline] __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x442c38 Code: 00 00 ea dc 40 00 00 00 00 00 c8 de 40 00 00 00 00 00 ea dc 40 00 00 00 00 00 ea dc 40 00 00 00 00 00 ea dc 40 00 00 00 00 00 dc 40 00 00 00 00 00 ea dc 40 00 00 00 00 00 ea dc 40 00 00 00 RSP: 002b:00007fff9b839848 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000442c38 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00000000004c2548 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 00000000004002e0 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006d41a0 R14: 0000000000000000 R15: 0000000000000000 Kernel Offset: disabled Rebooting in 86400 seconds..