Warning: Permanently added '10.128.1.11' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 37.387299] IPVS: ftp: loaded support on port[0] = 21 [ 37.426457] EXT4-fs (loop0): warning: checktime reached, running e2fsck is recommended [ 37.437739] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 37.460504] ------------[ cut here ]------------ [ 37.465710] generic_make_request: Trying to write to read-only block-device loop0 (partno 0) [ 37.474961] WARNING: CPU: 1 PID: 8122 at block/blk-core.c:2182 generic_make_request_checks+0x17d9/0x22e0 [ 37.486219] Kernel panic - not syncing: panic_on_warn set ... [ 37.486219] [ 37.493765] CPU: 1 PID: 8122 Comm: syz-executor725 Not tainted 4.19.163-syzkaller #0 [ 37.501978] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.511428] Call Trace: [ 37.514022] dump_stack+0x1fc/0x2fe [ 37.517689] panic+0x26a/0x50e [ 37.520954] ? __warn_printk+0xf3/0xf3 [ 37.524856] ? generic_make_request_checks+0x17d9/0x22e0 [ 37.530329] ? __probe_kernel_read+0x130/0x1b0 [ 37.535377] ? __warn.cold+0x5/0x61 [ 37.539201] ? __warn+0xe4/0x200 [ 37.542577] ? generic_make_request_checks+0x17d9/0x22e0 [ 37.548023] __warn.cold+0x20/0x61 [ 37.551568] ? generic_make_request_checks+0x17d9/0x22e0 [ 37.557373] report_bug+0x262/0x2b0 [ 37.561048] do_error_trap+0x1d7/0x310 [ 37.564924] ? math_error+0x310/0x310 [ 37.568707] ? __irq_work_queue_local+0x101/0x160 [ 37.573539] ? irq_work_queue+0x29/0x80 [ 37.577559] ? error_entry+0x72/0xd0 [ 37.581260] ? trace_hardirqs_off_caller+0x6e/0x210 [ 37.586275] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 37.591126] invalid_op+0x14/0x20 [ 37.594664] RIP: 0010:generic_make_request_checks+0x17d9/0x22e0 [ 37.600732] Code: ca 0a 00 00 45 8b b6 e4 04 00 00 48 8d 74 24 68 48 89 ef e8 39 2c 06 00 48 c7 c7 e0 02 b2 88 48 89 c6 44 89 f2 e8 72 cd ce fd <0f> 0b 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 [ 37.619918] RSP: 0018:ffff8880b13df800 EFLAGS: 00010282 [ 37.625290] RAX: 0000000000000000 RBX: ffff8880aef10000 RCX: 0000000000000000 [ 37.632566] RDX: 0000000000000000 RSI: ffffffff814fdbb1 RDI: ffffed101627bef2 [ 37.640185] RBP: ffff888097bf2500 R08: 0000000000000001 R09: 0000000000000000 [ 37.647460] R10: 0000000000000005 R11: 0000000000000000 R12: ffff888097bf2530 [ 37.654745] R13: ffff888097bf2508 R14: 0000000000000000 R15: 0000000000000000 [ 37.662077] ? vprintk_func+0x81/0x17e [ 37.665970] ? should_fail_bio.isra.0+0xa0/0xa0 [ 37.670634] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 37.675645] ? kmem_cache_alloc+0x315/0x370 [ 37.679979] generic_make_request+0x23f/0xdf0 [ 37.684471] ? blk_put_request+0x110/0x110 [ 37.688702] ? free_percpu+0x26c/0x790 [ 37.692597] submit_bio+0xb1/0x430 [ 37.696141] ? generic_make_request+0xdf0/0xdf0 [ 37.701095] ? check_preemption_disabled+0x41/0x280 [ 37.706153] ? guard_bio_eod+0x2a0/0x640 [ 37.710207] submit_bh_wbc+0x5a7/0x760 [ 37.714113] __sync_dirty_buffer+0x14e/0x320 [ 37.718642] ext4_commit_super+0x771/0xb70 [ 37.722886] ext4_put_super+0x205/0x1010 [ 37.726951] ? __sync_blockdev+0x7c/0xd0 [ 37.731025] ? ext4_quota_write+0x530/0x530 [ 37.735375] generic_shutdown_super+0x144/0x370 [ 37.740102] kill_block_super+0x97/0xf0 [ 37.744079] deactivate_locked_super+0x94/0x160 [ 37.748741] deactivate_super+0x174/0x1a0 [ 37.752901] ? deactivate_locked_super+0x160/0x160 [ 37.757850] ? dput+0x31/0x640 [ 37.761054] cleanup_mnt+0x1a8/0x290 [ 37.764870] task_work_run+0x148/0x1c0 [ 37.768766] do_exit+0xbed/0x2be0 [ 37.772215] ? lock_downgrade+0x720/0x720 [ 37.776365] ? mm_update_next_owner+0x650/0x650 [ 37.781036] ? up_read+0x17/0x110 [ 37.784579] ? __do_page_fault+0x180/0xd60 [ 37.788876] do_group_exit+0x125/0x310 [ 37.792778] __x64_sys_exit_group+0x3a/0x50 [ 37.797344] do_syscall_64+0xf9/0x620 [ 37.801164] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 37.806356] RIP: 0033:0x443818 [ 37.809610] Code: Bad RIP value. [ 37.812988] RSP: 002b:00007ffdfd6ab1c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 37.820703] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000443818 [ 37.827964] RDX: 0000000000000001 RSI: 000000000000003c RDI: 0000000000000001 [ 37.835370] RBP: 00000000004c3bd0 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 37.842636] R10: 000000000000000f R11: 0000000000000246 R12: 0000000000000001 [ 37.849898] R13: 00000000006d6180 R14: 0000000000000000 R15: 0000000000000000 [ 37.857926] Kernel Offset: disabled [ 37.861689] Rebooting in 86400 seconds..