[ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Warning: Permanently added '10.128.0.161' (ECDSA) to the list of known hosts. Debian GNU/Linux 9 syzkaller ttyS0 executing program [ 76.739784][ T35] audit: type=1400 audit(1613234455.540:8): avc: denied { execmem } for pid=8437 comm="syz-executor674" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 82.030220][ T4838] ------------[ cut here ]------------ [ 82.035963][ T4838] Trying to write to read-only block-device sda1 (partno 1) [ 82.048123][ T4838] WARNING: CPU: 1 PID: 4838 at block/blk-core.c:705 submit_bio_checks+0x1ba2/0x1fa0 [ 82.058659][ T4838] Modules linked in: [ 82.063639][ T4838] CPU: 1 PID: 4838 Comm: jbd2/sda1-8 Not tainted 5.11.0-rc7-syzkaller #0 executing program [ 82.072757][ T4838] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 82.083046][ T4838] RIP: 0010:submit_bio_checks+0x1ba2/0x1fa0 [ 82.089005][ T4838] Code: 41 0f b6 97 e0 05 00 00 48 8d 74 24 50 48 89 ef 89 14 24 e8 50 37 fe ff 8b 14 24 48 c7 c7 60 79 9c 89 48 89 c6 e8 88 53 10 05 <0f> 0b 48 8d 55 28 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 0f b6 [ 82.110227][ T4838] RSP: 0018:ffffc900093a77a8 EFLAGS: 00010286 executing program [ 82.123605][ T4838] RAX: 0000000000000000 RBX: ffff88801bed4340 RCX: 0000000000000000 [ 82.132244][ T4838] RDX: ffff8880250c8280 RSI: ffffffff815b7455 RDI: fffff52001274ee7 [ 82.140887][ T4838] RBP: ffff88801c3c41c0 R08: 0000000000000000 R09: 0000000000000000 [ 82.148869][ T4838] R10: ffffffff815b05fe R11: 0000000000000000 R12: 0000000000000000 [ 82.157805][ T4838] R13: 1ffff92001274efb R14: ffff88801c3c41d0 R15: ffff888017b9f300 [ 82.165878][ T4838] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 82.174898][ T4838] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 82.181795][ T4838] CR2: 00007f5ea5c0e080 CR3: 000000001537f000 CR4: 00000000001506e0 [ 82.200198][ T4838] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 82.208195][ T4838] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 82.216249][ T4838] Call Trace: [ 82.219557][ T4838] ? trace_event_raw_event_block_rq_requeue+0x550/0x550 executing program [ 82.226645][ T4838] ? __lock_acquire+0xbdc/0x54f0 [ 82.231662][ T4838] submit_bio_noacct+0x81/0xe10 [ 82.236528][ T4838] ? blk_queue_enter+0xb50/0xb50 [ 82.241551][ T4838] ? find_held_lock+0x2d/0x110 [ 82.246344][ T4838] submit_bio+0x263/0x5a0 [ 82.250976][ T4838] ? submit_bio_noacct+0xe10/0xe10 [ 82.256124][ T4838] submit_bh_wbc+0x685/0x8e0 [ 82.261508][ T4838] jbd2_journal_commit_transaction+0x20d4/0x6b90 [ 82.267897][ T4838] ? jbd2_journal_finish_inode_data_buffers+0xc0/0xc0 [ 82.274793][ T4838] ? try_to_del_timer_sync+0xbf/0x110 executing program [ 82.285432][ T4838] ? _raw_spin_unlock_irqrestore+0x42/0x50 [ 82.291343][ T4838] ? lockdep_hardirqs_on+0x79/0x100 [ 82.296586][ T4838] kjournald2+0x1d0/0x930 [ 82.301247][ T4838] ? jbd2_journal_init_inode+0x3a0/0x3a0 [ 82.306897][ T4838] ? finish_wait+0x260/0x260 [ 82.311542][ T4838] ? lockdep_hardirqs_on+0x79/0x100 [ 82.316772][ T4838] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 82.323326][ T4838] ? __kthread_parkme+0x13f/0x1e0 [ 82.328379][ T4838] ? jbd2_journal_init_inode+0x3a0/0x3a0 [ 82.340252][ T4838] kthread+0x3b1/0x4a0 [ 82.344353][ T4838] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 82.357262][ T4838] ret_from_fork+0x1f/0x30 [ 82.361876][ T4838] Kernel panic - not syncing: panic_on_warn set ... [ 82.368460][ T4838] CPU: 1 PID: 4838 Comm: jbd2/sda1-8 Not tainted 5.11.0-rc7-syzkaller #0 [ 82.376861][ T4838] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 82.386899][ T4838] Call Trace: [ 82.390163][ T4838] dump_stack+0x107/0x163 [ 82.394591][ T4838] panic+0x306/0x73d [ 82.398478][ T4838] ? __warn_printk+0xf3/0xf3 [ 82.403067][ T4838] ? __warn.cold+0x1a/0x44 [ 82.407473][ T4838] ? submit_bio_checks+0x1ba2/0x1fa0 [ 82.412780][ T4838] __warn.cold+0x35/0x44 [ 82.417013][ T4838] ? wake_up_klogd.part.0+0x8e/0xd0 [ 82.422205][ T4838] ? submit_bio_checks+0x1ba2/0x1fa0 [ 82.427481][ T4838] report_bug+0x1bd/0x210 [ 82.431892][ T4838] handle_bug+0x3c/0x60 [ 82.436040][ T4838] exc_invalid_op+0x14/0x40 [ 82.440543][ T4838] asm_exc_invalid_op+0x12/0x20 [ 82.445394][ T4838] RIP: 0010:submit_bio_checks+0x1ba2/0x1fa0 [ 82.451276][ T4838] Code: 41 0f b6 97 e0 05 00 00 48 8d 74 24 50 48 89 ef 89 14 24 e8 50 37 fe ff 8b 14 24 48 c7 c7 60 79 9c 89 48 89 c6 e8 88 53 10 05 <0f> 0b 48 8d 55 28 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 0f b6 [ 82.470887][ T4838] RSP: 0018:ffffc900093a77a8 EFLAGS: 00010286 [ 82.476942][ T4838] RAX: 0000000000000000 RBX: ffff88801bed4340 RCX: 0000000000000000 [ 82.484902][ T4838] RDX: ffff8880250c8280 RSI: ffffffff815b7455 RDI: fffff52001274ee7 [ 82.492876][ T4838] RBP: ffff88801c3c41c0 R08: 0000000000000000 R09: 0000000000000000 [ 82.500835][ T4838] R10: ffffffff815b05fe R11: 0000000000000000 R12: 0000000000000000 [ 82.508793][ T4838] R13: 1ffff92001274efb R14: ffff88801c3c41d0 R15: ffff888017b9f300 [ 82.516756][ T4838] ? wake_up_klogd.part.0+0x8e/0xd0 [ 82.521952][ T4838] ? vprintk_func+0x95/0x1e0 [ 82.526541][ T4838] ? submit_bio_checks+0x1ba2/0x1fa0 [ 82.531821][ T4838] ? trace_event_raw_event_block_rq_requeue+0x550/0x550 [ 82.538751][ T4838] ? __lock_acquire+0xbdc/0x54f0 [ 82.543682][ T4838] submit_bio_noacct+0x81/0xe10 [ 82.548531][ T4838] ? blk_queue_enter+0xb50/0xb50 [ 82.553461][ T4838] ? find_held_lock+0x2d/0x110 [ 82.558221][ T4838] submit_bio+0x263/0x5a0 [ 82.562631][ T4838] ? submit_bio_noacct+0xe10/0xe10 [ 82.567742][ T4838] submit_bh_wbc+0x685/0x8e0 [ 82.572322][ T4838] jbd2_journal_commit_transaction+0x20d4/0x6b90 [ 82.578666][ T4838] ? jbd2_journal_finish_inode_data_buffers+0xc0/0xc0 [ 82.585455][ T4838] ? try_to_del_timer_sync+0xbf/0x110 [ 82.590826][ T4838] ? _raw_spin_unlock_irqrestore+0x42/0x50 [ 82.596624][ T4838] ? lockdep_hardirqs_on+0x79/0x100 [ 82.601832][ T4838] kjournald2+0x1d0/0x930 [ 82.606171][ T4838] ? jbd2_journal_init_inode+0x3a0/0x3a0 [ 82.611790][ T4838] ? finish_wait+0x260/0x260 [ 82.616372][ T4838] ? lockdep_hardirqs_on+0x79/0x100 [ 82.621561][ T4838] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 82.627798][ T4838] ? __kthread_parkme+0x13f/0x1e0 [ 82.635503][ T4838] ? jbd2_journal_init_inode+0x3a0/0x3a0 [ 82.641227][ T4838] kthread+0x3b1/0x4a0 [ 82.645283][ T4838] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 82.651167][ T4838] ret_from_fork+0x1f/0x30 [ 82.656260][ T4838] Kernel Offset: disabled [ 82.660656][ T4838] Rebooting in 86400 seconds..