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generic_make_request: Trying to write to read-only block-device nullb0 (partno 0)
WARNING: CPU: 0 PID: 8956 at block/blk-core.c:758 bio_check_ro block/blk-core.c:758 [inline]
WARNING: CPU: 0 PID: 8956 at block/blk-core.c:758 generic_make_request_checks+0x1c0c/0x2070 block/blk-core.c:863
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 8956 Comm: syz-executor387 Not tainted 5.2.0-rc4+ #26
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+0x172/0x1f0 lib/dump_stack.c:113
 panic+0x2cb/0x744 kernel/panic.c:219
 __warn.cold+0x20/0x4d kernel/panic.c:576
 report_bug+0x263/0x2b0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:986
RIP: 0010:bio_check_ro block/blk-core.c:758 [inline]
RIP: 0010:generic_make_request_checks+0x1c0c/0x2070 block/blk-core.c:863
Code: 00 00 44 8b ab b4 04 00 00 48 8d b5 78 ff ff ff 4c 89 ff e8 f6 76 05 00 48 c7 c7 a0 1b a3 87 48 89 c6 44 89 ea e8 92 71 21 fe <0f> 0b 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 80 3c 02
RSP: 0018:ffff88808a3d6f80 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff8880a3362b00 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815ac976 RDI: ffffed101147ade2
RBP: ffff88808a3d7080 R08: ffff8880a4b66340 R09: ffffed1015d040f1
R10: ffffed1015d040f0 R11: ffff8880ae820787 R12: ffff8880a13df008
R13: 0000000000000000 R14: 0000000000000001 R15: ffff8880a13df000
 generic_make_request+0x8f/0xb40 block/blk-core.c:975
 submit_bio+0xba/0x480 block/blk-core.c:1129
 submit_bh_wbc+0x5f7/0x7f0 fs/buffer.c:3099
 __block_write_full_page+0x76e/0x1020 fs/buffer.c:1767
 block_write_full_page+0x21f/0x270 fs/buffer.c:2957
 blkdev_writepage+0x25/0x30 fs/block_dev.c:621
 __writepage+0x62/0xe0 mm/page-writeback.c:2301
 write_cache_pages+0x7bf/0x1380 mm/page-writeback.c:2236
 generic_writepages mm/page-writeback.c:2327 [inline]
 generic_writepages+0xed/0x160 mm/page-writeback.c:2316
 blkdev_writepages+0x1e/0x30 fs/block_dev.c:2004
 do_writepages+0xfa/0x2a0 mm/page-writeback.c:2342
 __filemap_fdatawrite_range+0x26d/0x340 mm/filemap.c:419
 __filemap_fdatawrite mm/filemap.c:427 [inline]
 filemap_fdatawrite mm/filemap.c:432 [inline]
 filemap_write_and_wait mm/filemap.c:613 [inline]
 filemap_write_and_wait+0x47/0xd0 mm/filemap.c:608
 __sync_blockdev fs/block_dev.c:503 [inline]
 sync_blockdev fs/block_dev.c:512 [inline]
 __blkdev_put+0x204/0x810 fs/block_dev.c:1836
 blkdev_put+0x98/0x560 fs/block_dev.c:1905
 blkdev_close+0x8b/0xb0 fs/block_dev.c:1912
 __fput+0x2ff/0x890 fs/file_table.c:280
 ____fput+0x16/0x20 fs/file_table.c:313
 task_work_run+0x145/0x1c0 kernel/task_work.c:113
 exit_task_work include/linux/task_work.h:22 [inline]
 do_exit+0x90a/0x2fa0 kernel/exit.c:877
 do_group_exit+0x135/0x370 kernel/exit.c:981
 get_signal+0x471/0x24b0 kernel/signal.c:2640
 do_signal+0x87/0x1900 arch/x86/kernel/signal.c:815
 exit_to_usermode_loop+0x244/0x2c0 arch/x86/entry/common.c:164
 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:279 [inline]
 do_syscall_64+0x58e/0x680 arch/x86/entry/common.c:304
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x445869
Code: Bad RIP value.
RSP: 002b:00007fcf6e53cdb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00000000006dac48 RCX: 0000000000445869
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000006dac48
RBP: 00000000006dac40 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac4c
R13: 00007fff0b7c111f R14: 00007fcf6e53d9c0 R15: 20c49ba5e353f7cf
Kernel Offset: disabled
Rebooting in 86400 seconds..