Warning: Permanently added '10.128.0.88' (ECDSA) to the list of known hosts. executing program [ 58.764033] audit: type=1400 audit(1560204930.122:36): avc: denied { map } for pid=7954 comm="syz-executor313" path="/root/syz-executor313285686" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 58.779527] ------------[ cut here ]------------ [ 58.795423] generic_make_request: Trying to write to read-only block-device nullb0 (partno 0) [ 58.804910] WARNING: CPU: 0 PID: 7956 at block/blk-core.c:2175 generic_make_request_checks+0x1fc5/0x24c0 [ 58.809797] audit: type=1400 audit(1560204930.132:37): avc: denied { map } for pid=7954 comm="syz-executor313" path="/dev/nullb0" dev="devtmpfs" ino=15598 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:device_t:s0 tclass=blk_file permissive=1 [ 58.814528] Kernel panic - not syncing: panic_on_warn set ... [ 58.814528] [ 58.814543] CPU: 0 PID: 7956 Comm: syz-executor313 Not tainted 4.19.49 #21 [ 58.814551] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.814555] Call Trace: [ 58.814574] dump_stack+0x172/0x1f0 [ 58.814617] panic+0x263/0x507 [ 58.814631] ? __warn_printk+0xf3/0xf3 [ 58.814661] ? generic_make_request_checks+0x1fc5/0x24c0 [ 58.814679] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 58.887373] ? __warn.cold+0x5/0x4a [ 58.890978] ? __warn+0xe8/0x1d0 [ 58.894327] ? generic_make_request_checks+0x1fc5/0x24c0 [ 58.899756] __warn.cold+0x20/0x4a [ 58.903292] ? generic_make_request_checks+0x1fc5/0x24c0 [ 58.908733] report_bug+0x263/0x2b0 [ 58.912340] do_error_trap+0x204/0x360 [ 58.916227] ? math_error+0x340/0x340 [ 58.920011] ? wake_up_klogd+0x99/0xd0 [ 58.923879] ? vprintk_emit+0x264/0x690 [ 58.927833] ? vprintk_emit+0x1ab/0x690 [ 58.931789] ? error_entry+0x76/0xd0 [ 58.935499] ? trace_hardirqs_off_caller+0x65/0x220 [ 58.940511] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 58.945332] do_invalid_op+0x1b/0x20 [ 58.949037] invalid_op+0x14/0x20 [ 58.952471] RIP: 0010:generic_make_request_checks+0x1fc5/0x24c0 [ 58.958520] Code: 85 1f 04 00 00 45 8b b6 e4 04 00 00 48 8d 73 a0 4c 89 e7 e8 5d 58 06 00 48 c7 c7 40 0e 80 87 48 89 c6 44 89 f2 e8 09 e4 2f fe <0f> 0b 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 [ 58.977414] RSP: 0018:ffff88808159ef08 EFLAGS: 00010286 [ 58.982757] RAX: 0000000000000000 RBX: ffff88808159efd8 RCX: 0000000000000000 [ 58.990005] RDX: 0000000000000000 RSI: ffffffff8155a186 RDI: ffffed10102b3dd3 [ 58.997253] RBP: ffff88808159f000 R08: ffff88807f598080 R09: ffffed1015d04fe9 [ 59.004501] R10: ffffed1015d04fe8 R11: ffff8880ae827f47 R12: ffff8880a0db0480 [ 59.011751] R13: ffff8880a0db0488 R14: 0000000000000000 R15: 0000000000000000 [ 59.019008] ? vprintk_func+0x86/0x189 [ 59.022874] ? generic_make_request_checks+0x1fc5/0x24c0 [ 59.028304] ? blk_queue_bypass_end+0x210/0x210 [ 59.032948] ? ___might_sleep+0x163/0x280 [ 59.037082] generic_make_request+0x24c/0x12d0 [ 59.041648] ? blk_get_request+0x710/0x710 [ 59.045868] ? guard_bio_eod+0x1da/0x660 [ 59.049915] ? find_held_lock+0x35/0x130 [ 59.053962] ? guard_bio_eod+0x1da/0x660 [ 59.058005] submit_bio+0xba/0x480 [ 59.061522] ? submit_bio+0xba/0x480 [ 59.065215] ? lock_downgrade+0x810/0x810 [ 59.069340] ? generic_make_request+0x12d0/0x12d0 [ 59.074170] ? kasan_check_read+0x11/0x20 [ 59.078309] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 59.083304] ? guard_bio_eod+0x2a1/0x660 [ 59.087345] submit_bh_wbc+0x5dc/0x790 [ 59.091241] __block_write_full_page+0x76e/0x1020 [ 59.096073] ? check_disk_change+0x140/0x140 [ 59.100465] block_write_full_page+0x21f/0x270 [ 59.105047] ? check_disk_change+0x140/0x140 [ 59.109441] blkdev_writepage+0x25/0x30 [ 59.113411] __writepage+0x62/0xe0 [ 59.116947] write_cache_pages+0x971/0x1670 [ 59.121249] ? __lock_acquire+0x6eb/0x48f0 [ 59.125469] ? tag_pages_for_writeback+0x320/0x320 [ 59.130385] ? clear_page_dirty_for_io+0xff0/0xff0 [ 59.135309] ? mark_held_locks+0x100/0x100 [ 59.139523] ? __lock_acquire+0x6eb/0x48f0 [ 59.143756] ? __lock_acquire+0x6eb/0x48f0 [ 59.147975] generic_writepages+0xe6/0x160 [ 59.152189] ? write_cache_pages+0x1670/0x1670 [ 59.156758] ? mark_held_locks+0x100/0x100 [ 59.160974] ? wbc_attach_and_unlock_inode+0x51a/0x930 [ 59.166229] ? find_held_lock+0x35/0x130 [ 59.170267] ? blkdev_readpages+0x40/0x40 [ 59.174441] blkdev_writepages+0x1e/0x30 [ 59.178478] do_writepages+0xf3/0x2a0 [ 59.182258] ? page_writeback_cpu_online+0x20/0x20 [ 59.187176] ? kasan_check_read+0x11/0x20 [ 59.191301] ? do_raw_spin_unlock+0x57/0x270 [ 59.195699] ? _raw_spin_unlock+0x2d/0x50 [ 59.199823] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 59.205337] ? wbc_attach_and_unlock_inode+0x5c4/0x930 [ 59.210618] __filemap_fdatawrite_range+0x26d/0x340 [ 59.215614] ? delete_from_page_cache_batch+0xec0/0xec0 [ 59.220962] filemap_write_and_wait+0x47/0xd0 [ 59.225448] __blkdev_put+0x204/0x810 [ 59.229241] ? bd_set_size+0xb0/0xb0 [ 59.232930] ? wait_for_completion+0x440/0x440 [ 59.237500] blkdev_put+0x98/0x560 [ 59.241023] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 59.246541] ? blkdev_put+0x560/0x560 [ 59.250320] blkdev_close+0x8b/0xb0 [ 59.253929] __fput+0x2dd/0x8b0 [ 59.257191] ____fput+0x16/0x20 [ 59.260455] task_work_run+0x145/0x1c0 [ 59.264327] do_exit+0x933/0x2fa0 [ 59.267761] ? get_signal+0x384/0x1fc0 [ 59.271639] ? mm_update_next_owner+0x660/0x660 [ 59.276308] ? _raw_spin_unlock_irq+0x28/0x90 [ 59.280792] ? get_signal+0x384/0x1fc0 [ 59.284657] ? _raw_spin_unlock_irq+0x28/0x90 [ 59.289147] do_group_exit+0x135/0x370 [ 59.293017] get_signal+0x3ec/0x1fc0 [ 59.296716] ? lock_downgrade+0x810/0x810 [ 59.300867] do_signal+0x95/0x1960 [ 59.304392] ? vm_mmap_pgoff+0x1f1/0x230 [ 59.308433] ? vm_mmap_pgoff+0x107/0x230 [ 59.312488] ? setup_sigcontext+0x7d0/0x7d0 [ 59.316793] ? vma_is_stack_for_current+0xd0/0xd0 [ 59.321628] ? iterate_fd+0x360/0x360 [ 59.325417] ? __x64_sys_futex+0x40d/0x590 [ 59.329635] ? exit_to_usermode_loop+0x43/0x2c0 [ 59.334286] ? do_syscall_64+0x53d/0x620 [ 59.338325] ? exit_to_usermode_loop+0x43/0x2c0 [ 59.342972] ? lockdep_hardirqs_on+0x415/0x5d0 [ 59.347561] ? trace_hardirqs_on+0x67/0x220 [ 59.351870] exit_to_usermode_loop+0x244/0x2c0 [ 59.356440] do_syscall_64+0x53d/0x620 [ 59.360309] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 59.365476] RIP: 0033:0x445869 [ 59.368650] Code: Bad RIP value. [ 59.371991] RSP: 002b:00007fd3c106bdb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 59.379680] RAX: 0000000000000001 RBX: 00000000006dac38 RCX: 0000000000445869 [ 59.386943] RDX: 0000000000445869 RSI: 0000000000000081 RDI: 00000000006dac3c [ 59.394190] RBP: 00000000006dac30 R08: 0000000000000000 R09: 0000000000000000 [ 59.401434] R10: 0000000000000006 R11: 0000000000000246 R12: 00000000006dac3c [ 59.408683] R13: 00007fffc613e42f R14: 00007fd3c106c9c0 R15: 20c49ba5e353f7cf [ 59.417112] Kernel Offset: disabled [ 59.420775] Rebooting in 86400 seconds..