Warning: Permanently added '10.128.10.63' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 48.078599] kauditd_printk_skb: 3 callbacks suppressed [ 48.078615] audit: type=1400 audit(1572631369.217:36): avc: denied { map } for pid=7671 comm="syz-executor044" path="/root/syz-executor044589002" 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 executing program executing program executing program executing program executing program [ 48.146569] ------------[ cut here ]------------ [ 48.169284] generic_make_request: Trying to write to read-only block-device nullb0 (partno 0) executing program executing program executing program executing program executing program executing program executing program [ 48.214877] WARNING: CPU: 1 PID: 7687 at block/blk-core.c:2177 generic_make_request_checks+0x1fc5/0x24c0 [ 48.224584] Kernel panic - not syncing: panic_on_warn set ... [ 48.224584] [ 48.232005] CPU: 1 PID: 7687 Comm: syz-executor044 Not tainted 4.19.81 #0 [ 48.239064] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.248431] Call Trace: [ 48.251043] dump_stack+0x172/0x1f0 [ 48.254698] panic+0x26a/0x50e [ 48.257912] ? __warn_printk+0xf3/0xf3 executing program executing program [ 48.263844] ? generic_make_request_checks+0x1fc5/0x24c0 [ 48.269333] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.274910] ? __warn.cold+0x5/0x53 [ 48.278580] ? __warn+0xe8/0x1d0 [ 48.281967] ? generic_make_request_checks+0x1fc5/0x24c0 [ 48.287456] __warn.cold+0x20/0x53 [ 48.291026] ? generic_make_request_checks+0x1fc5/0x24c0 [ 48.296502] report_bug+0x263/0x2b0 [ 48.300165] do_error_trap+0x204/0x360 [ 48.304078] ? math_error+0x340/0x340 [ 48.307904] ? wake_up_klogd+0x99/0xd0 [ 48.311806] ? vprintk_emit+0x264/0x690 [ 48.315885] ? vprintk_emit+0x1ab/0x690 [ 48.319991] ? error_entry+0x7c/0xe0 [ 48.323717] ? trace_hardirqs_off_caller+0x65/0x220 [ 48.328752] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 48.333614] do_invalid_op+0x1b/0x20 [ 48.337343] invalid_op+0x14/0x20 [ 48.340815] RIP: 0010:generic_make_request_checks+0x1fc5/0x24c0 [ 48.346899] 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 91 80 87 48 89 c6 44 89 f2 e8 e9 ae 2f fe <0f> 0b 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 [ 48.365928] RSP: 0018:ffff8880969cf3a8 EFLAGS: 00010286 [ 48.371463] RAX: 0000000000000000 RBX: ffff8880969cf478 RCX: 0000000000000000 [ 48.378745] RDX: 0000000000000000 RSI: ffffffff81553f06 RDI: ffffed1012d39e67 [ 48.386042] RBP: ffff8880969cf4a0 R08: ffff8880982c2140 R09: ffffed1015d25079 [ 48.393431] R10: ffffed1015d25078 R11: ffff8880ae9283c7 R12: ffff8880a949ae00 [ 48.400726] R13: ffff8880a949ae08 R14: 0000000000000000 R15: 0000000000000000 [ 48.408048] ? vprintk_func+0x86/0x189 [ 48.411867] kobject: 'nullb0' (00000000080cd2b4): kobject_uevent_env [ 48.411999] ? generic_make_request_checks+0x1fc5/0x24c0 [ 48.412020] ? trace_event_raw_event_block_rq_requeue+0x600/0x600 [ 48.418625] kobject: 'nullb0' (00000000080cd2b4): fill_kobj_path: path = '/devices/virtual/block/nullb0' [ 48.424064] ? lock_downgrade+0x880/0x880 [ 48.424080] ? kasan_check_read+0x11/0x20 [ 48.424098] generic_make_request+0x24c/0x12d0 [ 48.424111] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.424126] ? bio_clone_blkcg_association+0xea/0x330 [ 48.424142] ? blk_get_request+0x710/0x710 [ 48.469395] ? check_preemption_disabled+0x48/0x290 [ 48.474453] blk_queue_split+0x8fa/0x1bd0 [ 48.478629] ? blk_queue_split+0x8fa/0x1bd0 [ 48.482996] ? blk_execute_rq_nowait.cold+0x3c/0x3c [ 48.488047] blk_mq_make_request+0x15e/0x1de0 [ 48.492572] ? blk_mq_try_issue_directly+0x1b0/0x1b0 [ 48.497709] ? trace_event_raw_event_block_rq_requeue+0x600/0x600 [ 48.503974] ? mempool_alloc+0x176/0x380 [ 48.508071] generic_make_request+0x747/0x12d0 [ 48.512689] ? blk_get_request+0x710/0x710 [ 48.516953] ? retint_kernel+0x2d/0x2d [ 48.520887] submit_bio+0xba/0x480 [ 48.524512] ? submit_bio+0xba/0x480 [ 48.528257] ? generic_make_request+0x12d0/0x12d0 [ 48.533128] ? bvec_alloc+0x2f0/0x2f0 [ 48.536966] next_bio+0x4a/0x60 [ 48.540304] __blkdev_issue_zero_pages+0x151/0x430 [ 48.545560] blkdev_issue_zeroout+0x42c/0x4c0 [ 48.550088] ? __blkdev_issue_zeroout+0x1a0/0x1a0 [ 48.554975] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 48.560645] blkdev_ioctl+0x113b/0x1ab6 [ 48.564653] ? blkpg_ioctl+0xa90/0xa90 [ 48.568563] ? do_futex+0x17d/0x1d70 [ 48.572304] ? debug_check_no_obj_freed+0x200/0x464 [ 48.577366] ? __fget+0x340/0x540 [ 48.580859] block_ioctl+0xee/0x130 [ 48.584681] ? blkdev_fallocate+0x410/0x410 [ 48.593205] do_vfs_ioctl+0xd5f/0x1380 [ 48.597130] ? selinux_file_ioctl+0x46f/0x5e0 [ 48.601662] ? selinux_file_ioctl+0x125/0x5e0 [ 48.606204] ? ioctl_preallocate+0x210/0x210 [ 48.612304] ? selinux_file_mprotect+0x620/0x620 [ 48.617102] ? iterate_fd+0x360/0x360 [ 48.620958] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.626521] ? security_file_ioctl+0x8d/0xc0 [ 48.631040] ksys_ioctl+0xab/0xd0 [ 48.634532] __x64_sys_ioctl+0x73/0xb0 [ 48.638650] do_syscall_64+0xfd/0x620 [ 48.642583] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 48.647795] RIP: 0033:0x446799 [ 48.651111] 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 [ 48.670168] RSP: 002b:00007f8c85850db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 48.677961] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446799 [ 48.685429] RDX: 0000000020000080 RSI: 000000000000127f RDI: 0000000000000003 [ 48.692729] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 48.700033] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 48.709533] R13: 00007ffc320cf41f R14: 00007f8c858519c0 R15: 000000000000002d [ 48.718908] Kernel Offset: disabled [ 48.722626] Rebooting in 86400 seconds..