------------[ cut here ]------------ generic_make_request: Trying to write to read-only block-device nullb0 (partno 0) WARNING: CPU: 0 PID: 9344 at block/blk-core.c:800 bio_check_ro block/blk-core.c:800 [inline] WARNING: CPU: 0 PID: 9344 at block/blk-core.c:800 generic_make_request_checks+0x1c78/0x2190 block/blk-core.c:901 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 9344 Comm: syz-executor233 Not tainted 5.4.0-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+0x2e3/0x75c kernel/panic.c:221 __warn.cold+0x2f/0x3e kernel/panic.c:582 report_bug+0x289/0x300 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:174 [inline] fixup_bug arch/x86/kernel/traps.c:169 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:267 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:286 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027 RIP: 0010:bio_check_ro block/blk-core.c:800 [inline] RIP: 0010:generic_make_request_checks+0x1c78/0x2190 block/blk-core.c:901 Code: 00 00 44 8b ab 5c 05 00 00 48 8d b5 78 ff ff ff 4c 89 ff e8 ca 92 05 00 48 c7 c7 00 fd 6d 88 48 89 c6 44 89 ea e8 97 d7 cb fd <0f> 0b 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 80 3c 02 RSP: 0018:ffffc90001ed7710 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff8880a146a000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815e88f6 RDI: fffff520003daed4 RBP: ffffc90001ed7810 R08: ffff88809a2e4140 R09: ffffed1015d06621 R10: ffffed1015d06620 R11: ffff8880ae833107 R12: ffff88809c023f08 R13: 0000000000000000 R14: 0000000000000001 R15: ffff88809c023f00 generic_make_request+0x8f/0xb00 block/blk-core.c:1020 submit_bio+0x113/0x600 block/blk-core.c:1192 blk_next_bio+0x4a/0x60 block/blk-lib.c:19 __blkdev_issue_zero_pages+0x151/0x430 block/blk-lib.c:284 blkdev_issue_zeroout+0x434/0x4c0 block/blk-lib.c:378 blk_ioctl_zeroout block/ioctl.c:237 [inline] blkdev_ioctl+0x146f/0x1df0 block/ioctl.c:504 block_ioctl+0xee/0x130 fs/block_dev.c:1983 vfs_ioctl fs/ioctl.c:47 [inline] file_ioctl fs/ioctl.c:545 [inline] do_vfs_ioctl+0x977/0x14e0 fs/ioctl.c:732 ksys_ioctl+0xab/0xd0 fs/ioctl.c:749 __do_sys_ioctl fs/ioctl.c:756 [inline] __se_sys_ioctl fs/ioctl.c:754 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:754 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4467b9 Code: e8 0c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 5b 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f398f552db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 00000000004467b9 RDX: 0000000020000080 RSI: 000000000000127f RDI: 0000000000000003 RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c R13: 00007ffcdb301f3f R14: 00007f398f5539c0 R15: 0000000000000000 Kernel Offset: disabled Rebooting in 86400 seconds..