[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.39' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 50.612924][ T8436] ------------[ cut here ]------------ [ 50.618497][ T8436] Trying to write to read-only block-device nullb0 (partno 0) [ 50.626127][ T8436] WARNING: CPU: 1 PID: 8436 at block/blk-core.c:703 submit_bio_checks+0x1641/0x1a70 [ 50.635790][ T8436] Modules linked in: [ 50.639883][ T8436] CPU: 0 PID: 8436 Comm: syz-executor487 Tainted: G W 5.13.0-syzkaller #0 [ 50.649941][ T8436] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.660116][ T8436] RIP: 0010:submit_bio_checks+0x1641/0x1a70 [ 50.666319][ T8436] Code: 00 00 45 0f b6 a4 24 50 05 00 00 48 8d 74 24 60 48 89 ef e8 c1 46 fe ff 48 c7 c7 00 54 e1 89 48 89 c6 44 89 e2 e8 fc ed 22 05 <0f> 0b e9 51 f3 ff ff e8 b3 40 b9 fd 0f 0b e9 da f1 ff ff e8 a7 40 [ 50.685987][ T8436] RSP: 0018:ffffc900017ef488 EFLAGS: 00010282 [ 50.692136][ T8436] RAX: 0000000000000000 RBX: ffff88801fae0e50 RCX: 0000000000000000 [ 50.700392][ T8436] RDX: ffff888016db1c40 RSI: ffffffff815d7235 RDI: fffff520002fde83 [ 50.708418][ T8436] RBP: ffff88802af4b3c0 R08: 0000000000000000 R09: 0000000000000000 [ 50.716381][ T8436] R10: ffffffff815d109e R11: 0000000000000000 R12: 0000000000000000 [ 50.724701][ T8436] R13: ffff88802af4b3d0 R14: ffff888145646300 R15: ffff88801fae13c4 [ 50.733121][ T8436] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 50.742115][ T8436] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 50.748809][ T8436] CR2: 00007fc4934896c0 CR3: 000000000be8e000 CR4: 0000000000350ef0 [ 50.756779][ T8436] Call Trace: [ 50.760346][ T8436] ? do_group_exit+0x125/0x310 [ 50.765199][ T8436] ? __x64_sys_exit_group+0x3a/0x50 [ 50.770428][ T8436] ? do_syscall_64+0x35/0xb0 [ 50.775015][ T8436] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 50.781125][ T8436] ? trace_event_raw_event_block_rq_requeue+0x510/0x510 [ 50.788194][ T8436] ? kmem_cache_alloc+0x387/0x4a0 [ 50.793217][ T8436] ? mempool_free_pages+0x20/0x20 [ 50.798277][ T8436] submit_bio_noacct+0x81/0xf20 [ 50.803210][ T8436] ? lock_release+0x522/0x720 [ 50.807895][ T8436] ? mempool_resize+0x7d0/0x7d0 [ 50.812755][ T8436] ? blk_queue_enter+0xb50/0xb50 [ 50.817704][ T8436] ? lock_downgrade+0x6e0/0x6e0 [ 50.822719][ T8436] ? __mod_node_page_state+0x98/0x130 [ 50.828238][ T8436] ? do_raw_spin_unlock+0x171/0x230 [ 50.833576][ T8436] ? lock_acquire+0x442/0x510 [ 50.838763][ T8436] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 50.845091][ T8436] ? __bio_add_page+0x377/0x540 [ 50.850071][ T8436] submit_bio+0x1ea/0x470 [ 50.854398][ T8436] ? submit_bio_noacct+0xf20/0xf20 [ 50.859542][ T8436] ? wb_position_ratio+0x360/0x540 [ 50.864756][ T8436] submit_bh_wbc+0x5eb/0x7f0 [ 50.869369][ T8436] __block_write_full_page+0x879/0x1360 [ 50.874913][ T8436] ? bdev_evict_inode+0x490/0x490 [ 50.879950][ T8436] block_write_full_page+0x14d/0x190 [ 50.885234][ T8436] ? bdev_evict_inode+0x490/0x490 [ 50.890304][ T8436] __writepage+0x60/0x180 [ 50.894633][ T8436] write_cache_pages+0x754/0x1190 [ 50.899794][ T8436] ? tag_pages_for_writeback+0x450/0x450 [ 50.905421][ T8436] ? clear_page_dirty_for_io+0xa30/0xa30 [ 50.911099][ T8436] ? bpf_ksym_find+0x171/0x1c0 [ 50.915859][ T8436] ? is_bpf_text_address+0xcb/0x160 [ 50.921091][ T8436] ? kernel_text_address+0xbd/0xf0 [ 50.926300][ T8436] ? __kernel_text_address+0x9/0x30 [ 50.931717][ T8436] ? unwind_get_return_address+0x51/0x90 [ 50.937512][ T8436] ? create_prof_cpu_mask+0x20/0x20 [ 50.942938][ T8436] ? arch_stack_walk+0x93/0xe0 [ 50.947736][ T8436] ? blkdev_readahead+0x20/0x20 [ 50.952582][ T8436] generic_writepages+0xe2/0x150 [ 50.957563][ T8436] ? write_cache_pages+0x1190/0x1190 [ 50.962840][ T8436] ? stack_trace_save+0x8c/0xc0 [ 50.967699][ T8436] ? kasan_set_free_info+0x20/0x30 [ 50.972805][ T8436] ? __kasan_slab_free+0xfb/0x130 [ 50.977893][ T8436] do_writepages+0xec/0x290 [ 50.982402][ T8436] ? writeback_set_ratelimit+0x150/0x150 [ 50.988242][ T8436] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 50.994335][ T8436] ? do_raw_spin_lock+0x120/0x2b0 [ 50.999387][ T8436] ? do_raw_spin_unlock+0x171/0x230 [ 51.004684][ T8436] ? _raw_spin_unlock+0x24/0x40 [ 51.009572][ T8436] ? wbc_attach_and_unlock_inode+0x111/0x9d0 [ 51.015551][ T8436] __filemap_fdatawrite_range+0x2a5/0x390 [ 51.021675][ T8436] ? delete_from_page_cache_batch+0xe20/0xe20 [ 51.027986][ T8436] ? locks_remove_file+0x30d/0x560 [ 51.033245][ T8436] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 51.039785][ T8436] ? do_raw_spin_unlock+0x171/0x230 [ 51.044995][ T8436] filemap_write_and_wait_range+0x65/0x100 [ 51.051361][ T8436] blkdev_put+0x7ff/0xae0 [ 51.055869][ T8436] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 51.062145][ T8436] blkdev_close+0x8c/0xb0 [ 51.066561][ T8436] __fput+0x288/0x920 [ 51.070762][ T8436] ? blkdev_put+0xae0/0xae0 [ 51.075277][ T8436] task_work_run+0xdd/0x1a0 [ 51.079850][ T8436] do_exit+0xbd4/0x2a50 [ 51.084127][ T8436] ? __context_tracking_exit+0xb8/0xe0 [ 51.089711][ T8436] ? lock_downgrade+0x6e0/0x6e0 [ 51.094576][ T8436] ? lock_downgrade+0x6e0/0x6e0 [ 51.099677][ T8436] ? mm_update_next_owner+0x7a0/0x7a0 [ 51.105050][ T8436] ? get_vtime_delta+0x26e/0x420 [ 51.110027][ T8436] do_group_exit+0x125/0x310 [ 51.114643][ T8436] __x64_sys_exit_group+0x3a/0x50 [ 51.119886][ T8436] do_syscall_64+0x35/0xb0 [ 51.124322][ T8436] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 51.130283][ T8436] RIP: 0033:0x43da59 [ 51.134171][ T8436] Code: Unable to access opcode bytes at RIP 0x43da2f. [ 51.141227][ T8436] RSP: 002b:00007ffdb0bfc3b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 51.149801][ T8436] RAX: ffffffffffffffda RBX: 00000000004ae230 RCX: 000000000043da59 [ 51.158056][ T8436] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 51.166118][ T8436] RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 0000000000000000 [ 51.174632][ T8436] R10: 0000000000000003 R11: 0000000000000246 R12: 00000000004ae230 [ 51.182644][ T8436] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 51.190969][ T8436] Kernel panic - not syncing: panic_on_warn set ... [ 51.197572][ T8436] CPU: 0 PID: 8436 Comm: syz-executor487 Tainted: G W 5.13.0-syzkaller #0 [ 51.207353][ T8436] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.217386][ T8436] Call Trace: [ 51.220646][ T8436] dump_stack_lvl+0xcd/0x134 [ 51.225220][ T8436] panic+0x306/0x73d [ 51.229096][ T8436] ? __warn_printk+0xf3/0xf3 [ 51.233668][ T8436] ? __warn.cold+0x1a/0x44 [ 51.238149][ T8436] ? submit_bio_checks+0x1641/0x1a70 [ 51.243516][ T8436] __warn.cold+0x35/0x44 [ 51.247760][ T8436] ? wake_up_klogd.part.0+0x8e/0xd0 [ 51.253041][ T8436] ? submit_bio_checks+0x1641/0x1a70 [ 51.258870][ T8436] report_bug+0x1bd/0x210 [ 51.263773][ T8436] handle_bug+0x3c/0x60 [ 51.268029][ T8436] exc_invalid_op+0x14/0x40 [ 51.272653][ T8436] asm_exc_invalid_op+0x12/0x20 [ 51.277749][ T8436] RIP: 0010:submit_bio_checks+0x1641/0x1a70 [ 51.283866][ T8436] Code: 00 00 45 0f b6 a4 24 50 05 00 00 48 8d 74 24 60 48 89 ef e8 c1 46 fe ff 48 c7 c7 00 54 e1 89 48 89 c6 44 89 e2 e8 fc ed 22 05 <0f> 0b e9 51 f3 ff ff e8 b3 40 b9 fd 0f 0b e9 da f1 ff ff e8 a7 40 [ 51.303475][ T8436] RSP: 0018:ffffc900017ef488 EFLAGS: 00010282 [ 51.309527][ T8436] RAX: 0000000000000000 RBX: ffff88801fae0e50 RCX: 0000000000000000 [ 51.317479][ T8436] RDX: ffff888016db1c40 RSI: ffffffff815d7235 RDI: fffff520002fde83 [ 51.325444][ T8436] RBP: ffff88802af4b3c0 R08: 0000000000000000 R09: 0000000000000000 [ 51.333565][ T8436] R10: ffffffff815d109e R11: 0000000000000000 R12: 0000000000000000 [ 51.341515][ T8436] R13: ffff88802af4b3d0 R14: ffff888145646300 R15: ffff88801fae13c4 [ 51.349488][ T8436] ? wake_up_klogd.part.0+0x8e/0xd0 [ 51.354674][ T8436] ? vprintk+0x95/0x260 [ 51.358811][ T8436] ? submit_bio_checks+0x1641/0x1a70 [ 51.364079][ T8436] ? do_group_exit+0x125/0x310 [ 51.368822][ T8436] ? __x64_sys_exit_group+0x3a/0x50 [ 51.374012][ T8436] ? do_syscall_64+0x35/0xb0 [ 51.378579][ T8436] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 51.384641][ T8436] ? trace_event_raw_event_block_rq_requeue+0x510/0x510 [ 51.391570][ T8436] ? kmem_cache_alloc+0x387/0x4a0 [ 51.396588][ T8436] ? mempool_free_pages+0x20/0x20 [ 51.401599][ T8436] submit_bio_noacct+0x81/0xf20 [ 51.406436][ T8436] ? lock_release+0x522/0x720 [ 51.411353][ T8436] ? mempool_resize+0x7d0/0x7d0 [ 51.416183][ T8436] ? blk_queue_enter+0xb50/0xb50 [ 51.421097][ T8436] ? lock_downgrade+0x6e0/0x6e0 [ 51.425933][ T8436] ? __mod_node_page_state+0x98/0x130 [ 51.431446][ T8436] ? do_raw_spin_unlock+0x171/0x230 [ 51.436684][ T8436] ? lock_acquire+0x442/0x510 [ 51.441355][ T8436] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 51.447583][ T8436] ? __bio_add_page+0x377/0x540 [ 51.452415][ T8436] submit_bio+0x1ea/0x470 [ 51.456741][ T8436] ? submit_bio_noacct+0xf20/0xf20 [ 51.461831][ T8436] ? wb_position_ratio+0x360/0x540 [ 51.466953][ T8436] submit_bh_wbc+0x5eb/0x7f0 [ 51.471527][ T8436] __block_write_full_page+0x879/0x1360 [ 51.477202][ T8436] ? bdev_evict_inode+0x490/0x490 [ 51.482214][ T8436] block_write_full_page+0x14d/0x190 [ 51.487485][ T8436] ? bdev_evict_inode+0x490/0x490 [ 51.492493][ T8436] __writepage+0x60/0x180 [ 51.496818][ T8436] write_cache_pages+0x754/0x1190 [ 51.501831][ T8436] ? tag_pages_for_writeback+0x450/0x450 [ 51.507442][ T8436] ? clear_page_dirty_for_io+0xa30/0xa30 [ 51.513136][ T8436] ? bpf_ksym_find+0x171/0x1c0 [ 51.517900][ T8436] ? is_bpf_text_address+0xcb/0x160 [ 51.523251][ T8436] ? kernel_text_address+0xbd/0xf0 [ 51.528445][ T8436] ? __kernel_text_address+0x9/0x30 [ 51.533624][ T8436] ? unwind_get_return_address+0x51/0x90 [ 51.539332][ T8436] ? create_prof_cpu_mask+0x20/0x20 [ 51.544512][ T8436] ? arch_stack_walk+0x93/0xe0 [ 51.549261][ T8436] ? blkdev_readahead+0x20/0x20 [ 51.554093][ T8436] generic_writepages+0xe2/0x150 [ 51.559010][ T8436] ? write_cache_pages+0x1190/0x1190 [ 51.564444][ T8436] ? stack_trace_save+0x8c/0xc0 [ 51.569274][ T8436] ? kasan_set_free_info+0x20/0x30 [ 51.574365][ T8436] ? __kasan_slab_free+0xfb/0x130 [ 51.579366][ T8436] do_writepages+0xec/0x290 [ 51.583865][ T8436] ? writeback_set_ratelimit+0x150/0x150 [ 51.589476][ T8436] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 51.595616][ T8436] ? do_raw_spin_lock+0x120/0x2b0 [ 51.600632][ T8436] ? do_raw_spin_unlock+0x171/0x230 [ 51.605810][ T8436] ? _raw_spin_unlock+0x24/0x40 [ 51.610643][ T8436] ? wbc_attach_and_unlock_inode+0x111/0x9d0 [ 51.616605][ T8436] __filemap_fdatawrite_range+0x2a5/0x390 [ 51.622307][ T8436] ? delete_from_page_cache_batch+0xe20/0xe20 [ 51.628354][ T8436] ? locks_remove_file+0x30d/0x560 [ 51.633449][ T8436] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 51.639685][ T8436] ? do_raw_spin_unlock+0x171/0x230 [ 51.644951][ T8436] filemap_write_and_wait_range+0x65/0x100 [ 51.650827][ T8436] blkdev_put+0x7ff/0xae0 [ 51.655153][ T8436] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 51.661821][ T8436] blkdev_close+0x8c/0xb0 [ 51.666216][ T8436] __fput+0x288/0x920 [ 51.670193][ T8436] ? blkdev_put+0xae0/0xae0 [ 51.674675][ T8436] task_work_run+0xdd/0x1a0 [ 51.679243][ T8436] do_exit+0xbd4/0x2a50 [ 51.683375][ T8436] ? __context_tracking_exit+0xb8/0xe0 [ 51.688830][ T8436] ? lock_downgrade+0x6e0/0x6e0 [ 51.693657][ T8436] ? lock_downgrade+0x6e0/0x6e0 [ 51.698587][ T8436] ? mm_update_next_owner+0x7a0/0x7a0 [ 51.704109][ T8436] ? get_vtime_delta+0x26e/0x420 [ 51.709026][ T8436] do_group_exit+0x125/0x310 [ 51.713609][ T8436] __x64_sys_exit_group+0x3a/0x50 [ 51.718617][ T8436] do_syscall_64+0x35/0xb0 [ 51.723379][ T8436] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 51.729340][ T8436] RIP: 0033:0x43da59 [ 51.733210][ T8436] Code: Unable to access opcode bytes at RIP 0x43da2f. [ 51.740205][ T8436] RSP: 002b:00007ffdb0bfc3b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 51.748622][ T8436] RAX: ffffffffffffffda RBX: 00000000004ae230 RCX: 000000000043da59 [ 51.756576][ T8436] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 51.764537][ T8436] RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 0000000000000000 [ 51.772493][ T8436] R10: 0000000000000003 R11: 0000000000000246 R12: 00000000004ae230 [ 51.780448][ T8436] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 51.794788][ T8436] Kernel Offset: disabled [ 51.799094][ T8436] Rebooting in 86400 seconds..