------------[ cut here ]------------ generic_make_request: Trying to write to read-only block-device loop0 (partno 0) WARNING: CPU: 0 PID: 8290 at block/blk-core.c:2161 bio_check_ro block/blk-core.c:2158 [inline] WARNING: CPU: 0 PID: 8290 at block/blk-core.c:2161 generic_make_request_checks+0x1618/0x24a0 block/blk-core.c:2263 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 8290 Comm: syz-executor2 Not tainted 4.18.0-rc7+ #177 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+0x1c9/0x2b4 lib/dump_stack.c:113 panic+0x238/0x4e7 kernel/panic.c:184 __warn.cold.8+0x163/0x1ba kernel/panic.c:536 report_bug+0x252/0x2d0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] do_error_trap+0x1fc/0x4d0 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:992 RIP: 0010:bio_check_ro block/blk-core.c:2158 [inline] RIP: 0010:generic_make_request_checks+0x1618/0x24a0 block/blk-core.c:2263 Code: 8d bd 78 ff ff ff 45 8b b6 d4 04 00 00 48 89 df 4c 89 fe e8 ea 54 07 00 44 89 f2 48 c7 c7 60 16 39 87 48 89 c6 e8 68 30 ff fd <0f> 0b e9 56 ed ff ff 48 8b bd 50 fd ff ff e8 75 f3 71 fe e9 ca ea RSP: 0018:ffff88019e7f6a60 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffff8801d2aa73c0 RCX: ffffc90002628000 RDX: 0000000000005481 RSI: ffffffff81632481 RDI: ffff88019e7f6738 RBP: ffff88019e7f6d60 R08: ffff8801d0250540 R09: 0000000000000006 R10: ffff8801d0250540 R11: 0000000000000000 R12: ffff8801d3061140 R13: ffff8801d2aa73c8 R14: 0000000000000000 R15: ffff88019e7f6cd8 generic_make_request+0x2aa/0x1800 block/blk-core.c:2387 submit_bio+0xba/0x460 block/blk-core.c:2552 submit_bh_wbc+0x5de/0x790 fs/buffer.c:3076 __block_write_full_page+0x836/0xf10 fs/buffer.c:1758 block_write_full_page+0x1ff/0x250 fs/buffer.c:2944 blkdev_writepage+0x24/0x30 fs/block_dev.c:567 __writepage+0x69/0xe0 mm/page-writeback.c:2302 write_cache_pages+0x92f/0x16b0 mm/page-writeback.c:2240 generic_writepages+0xda/0x150 mm/page-writeback.c:2326 blkdev_writepages+0x1d/0x30 fs/block_dev.c:1955 do_writepages+0x9a/0x1a0 mm/page-writeback.c:2341 __filemap_fdatawrite_range+0x364/0x4a0 mm/filemap.c:445 __filemap_fdatawrite mm/filemap.c:453 [inline] filemap_fdatawrite mm/filemap.c:458 [inline] filemap_write_and_wait+0x44/0xc0 mm/filemap.c:617 __sync_blockdev fs/block_dev.c:449 [inline] sync_blockdev fs/block_dev.c:458 [inline] set_blocksize+0x207/0x350 fs/block_dev.c:119 loop_set_fd drivers/block/loop.c:971 [inline] lo_ioctl+0x13a5/0x1d10 drivers/block/loop.c:1411 __blkdev_driver_ioctl block/ioctl.c:303 [inline] blkdev_ioctl+0x9cd/0x2030 block/ioctl.c:601 block_ioctl+0xee/0x130 fs/block_dev.c:1881 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x1de/0x1720 fs/ioctl.c:684 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:701 __do_sys_ioctl fs/ioctl.c:708 [inline] __se_sys_ioctl fs/ioctl.c:706 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:706 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x456b29 Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fc56da91c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fc56da926d4 RCX: 0000000000456b29 RDX: 0000000000000014 RSI: 0000000000004c00 RDI: 0000000000000013 RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004ce970 R14: 00000000004c51ea R15: 0000000000000000 Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..