Warning: Permanently added '10.128.0.32' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 40.612874] ------------[ cut here ]------------ [ 40.628086] generic_make_request: Trying to write to read-only block-device nullb0 (partno 0) [ 40.640565] WARNING: CPU: 0 PID: 8097 at block/blk-core.c:2182 generic_make_request_checks+0x17d9/0x22e0 [ 40.650847] Kernel panic - not syncing: panic_on_warn set ... [ 40.650847] [ 40.658700] CPU: 0 PID: 8097 Comm: syz-executor284 Not tainted 4.19.176-syzkaller #0 [ 40.667045] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.676889] Call Trace: [ 40.679508] dump_stack+0x1fc/0x2ef [ 40.683166] panic+0x26a/0x50e [ 40.686411] ? __warn_printk+0xf3/0xf3 [ 40.690339] ? generic_make_request_checks+0x17d9/0x22e0 [ 40.695818] ? __probe_kernel_read+0x130/0x1b0 [ 40.700532] ? __warn.cold+0x5/0x5a [ 40.704289] ? __warn+0xe4/0x200 [ 40.707678] ? generic_make_request_checks+0x17d9/0x22e0 executing program [ 40.713158] __warn.cold+0x20/0x5a [ 40.716804] ? generic_make_request_checks+0x17d9/0x22e0 [ 40.723921] report_bug+0x262/0x2b0 [ 40.728484] do_error_trap+0x1d7/0x310 [ 40.732710] ? math_error+0x310/0x310 [ 40.736709] ? __irq_work_queue_local+0x101/0x160 [ 40.741750] ? irq_work_queue+0x29/0x80 [ 40.746826] ? error_entry+0x72/0xd0 [ 40.750751] ? trace_hardirqs_off_caller+0x6e/0x210 [ 40.755792] ? trace_hardirqs_off_thunk+0x1a/0x1c executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 40.760726] invalid_op+0x14/0x20 [ 40.764371] RIP: 0010:generic_make_request_checks+0x17d9/0x22e0 [ 40.770514] Code: ca 0a 00 00 45 8b b6 e4 04 00 00 48 8d 74 24 68 48 89 ef e8 a9 13 06 00 48 c7 c7 c0 04 b2 88 48 89 c6 44 89 f2 e8 ec 1c 90 04 <0f> 0b 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 [ 40.792069] RSP: 0018:ffff88808b837480 EFLAGS: 00010286 [ 40.797448] RAX: 0000000000000000 RBX: ffff8880add250c0 RCX: 0000000000000000 [ 40.805169] RDX: 0000000000000000 RSI: ffffffff814de301 RDI: ffffed1011706e82 [ 40.813077] RBP: ffff8880a4956140 R08: 0000000000000001 R09: 0000000000000000 [ 40.820562] R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880a4956170 [ 40.828620] R13: ffff8880a4956148 R14: 0000000000000000 R15: 0000000000000000 [ 40.837119] ? vprintk_func+0x81/0x180 [ 40.841774] ? generic_make_request+0x1f3/0xdf0 [ 40.847943] ? should_fail_bio.isra.0+0xa0/0xa0 [ 40.852719] ? lock_downgrade+0x720/0x720 [ 40.856889] ? lock_acquire+0x170/0x3c0 [ 40.860894] ? generic_make_request+0x106/0xdf0 [ 40.865590] ? check_preemption_disabled+0x41/0x280 [ 40.871255] generic_make_request+0x23f/0xdf0 [ 40.875780] ? blk_put_request+0x110/0x110 [ 40.880040] ? bio_advance+0x2e7/0x450 [ 40.885101] ? check_preemption_disabled+0x41/0x280 [ 40.891592] blk_queue_split+0x83e/0x1700 [ 40.895861] ? blk_recount_segments+0x5f0/0x5f0 [ 40.900564] blk_mq_make_request+0x15d/0x1c00 [ 40.905088] ? blk_mq_try_issue_directly+0x180/0x180 [ 40.910218] ? should_fail_bio.isra.0+0xa0/0xa0 [ 40.915179] ? mempool_alloc+0x350/0x350 [ 40.919261] ? mempool_alloc+0x153/0x350 [ 40.923373] generic_make_request+0x613/0xdf0 [ 40.928008] ? blk_put_request+0x110/0x110 [ 40.932257] submit_bio+0xb1/0x430 [ 40.935990] ? generic_make_request+0xdf0/0xdf0 [ 40.940948] ? bvec_alloc+0x2f0/0x2f0 [ 40.945740] __blkdev_issue_zero_pages+0x17f/0x470 [ 40.950957] blkdev_issue_zeroout+0x41d/0x4b0 [ 40.955605] ? __blkdev_issue_zeroout+0x190/0x190 [ 40.960591] ? lock_downgrade+0x720/0x720 [ 40.964765] ? lock_acquire+0x170/0x3c0 [ 40.968769] ? __might_fault+0x192/0x1d0 [ 40.972856] blkdev_ioctl+0xc3c/0x1a80 [ 40.976856] ? blkpg_ioctl+0x9d0/0x9d0 [ 40.982420] ? do_futex+0x163/0x18a0 [ 40.986352] ? mark_held_locks+0xf0/0xf0 [ 40.990513] ? debug_check_no_obj_freed+0x201/0x490 [ 40.996439] ? futex_exit_release+0x220/0x220 [ 41.000967] block_ioctl+0xe9/0x130 [ 41.005522] ? blkdev_fallocate+0x3f0/0x3f0 [ 41.009867] do_vfs_ioctl+0xcdb/0x12e0 [ 41.014045] ? lock_downgrade+0x720/0x720 [ 41.018222] ? check_preemption_disabled+0x41/0x280 [ 41.023262] ? ioctl_preallocate+0x200/0x200 [ 41.027792] ? __fget+0x356/0x510 [ 41.031415] ? do_dup2+0x450/0x450 [ 41.034980] ? __se_sys_futex+0x298/0x3b0 [ 41.039516] ksys_ioctl+0x9b/0xc0 [ 41.043534] __x64_sys_ioctl+0x6f/0xb0 [ 41.047443] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 41.052193] do_syscall_64+0xf9/0x620 [ 41.056020] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 41.061890] RIP: 0033:0x445899 [ 41.065115] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 41.084200] RSP: 002b:00007feb09ecf308 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 41.092014] RAX: ffffffffffffffda RBX: 00000000004ca428 RCX: 0000000000445899 [ 41.099303] RDX: 0000000020000080 RSI: 000000000000127f RDI: 0000000000000003 [ 41.106791] RBP: 00000000004ca420 R08: 0000000000000000 R09: 0000000000000000 [ 41.114172] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004ca42c [ 41.121545] R13: 000000000049a074 R14: 6c756e2f7665642f R15: 0000000000022000 [ 41.129975] Kernel Offset: disabled [ 41.134261] Rebooting in 86400 seconds..