[ 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... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.10' (ECDSA) to the list of known hosts. executing program executing program executing program syzkaller login: [ 61.129966][ T6849] ------------[ cut here ]------------ [ 61.135582][ T6849] WARNING: CPU: 0 PID: 6849 at kernel/entry/common.c:338 irqentry_exit+0x47/0x90 [ 61.144710][ T6849] Kernel panic - not syncing: panic_on_warn set ... [ 61.151566][ T6849] CPU: 0 PID: 6849 Comm: syz-executor012 Not tainted 5.8.0-next-20200812-syzkaller #0 [ 61.161668][ T6849] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.172005][ T6849] Call Trace: [ 61.175306][ T6849] dump_stack+0x18f/0x20d [ 61.179760][ T6849] panic+0x2e3/0x75c [ 61.183929][ T6849] ? __warn_printk+0xf3/0xf3 [ 61.188511][ T6849] ? printk+0xba/0xed [ 61.192618][ T6849] ? log_store.cold+0x16/0x16 [ 61.197277][ T6849] ? no_context+0x120/0x9f0 [ 61.201912][ T6849] ? __warn.cold+0x5/0x4a [ 61.206233][ T6849] ? __warn+0xd6/0x1f2 [ 61.210291][ T6849] ? irqentry_exit+0x47/0x90 [ 61.214862][ T6849] __warn.cold+0x20/0x4a [ 61.219086][ T6849] ? irqentry_exit+0x47/0x90 [ 61.223662][ T6849] report_bug+0x1bd/0x210 [ 61.227996][ T6849] handle_bug+0x38/0x90 [ 61.232139][ T6849] exc_invalid_op+0x14/0x40 [ 61.236638][ T6849] asm_exc_invalid_op+0x12/0x20 [ 61.241485][ T6849] RIP: 0010:irqentry_exit+0x47/0x90 [ 61.246668][ T6849] Code: 27 f6 87 91 00 00 00 02 74 18 40 84 f6 75 3b 65 8b 05 4d 74 0e 78 a9 ff ff ff 7f 74 11 e9 b1 b0 86 f9 40 84 f6 75 3f c3 eb 89 <0f> 0b eb ca e8 80 99 6e f9 65 48 8b 04 25 c0 fe 01 00 48 8b 00 a8 [ 61.266724][ T6849] RSP: 0000:ffffc90004d07390 EFLAGS: 00010002 [ 61.273243][ T6849] RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff817a34b7 [ 61.281405][ T6849] RDX: ffff8880940d0000 RSI: 0000000000000000 RDI: ffffc90004d073c8 [ 61.289607][ T6849] RBP: ffffc90004d073c8 R08: 0000000000000000 R09: 0000000000000000 [ 61.297570][ T6849] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 61.306772][ T6849] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 61.315211][ T6849] ? trace_hardirqs_off+0x27/0x210 [ 61.320755][ T6849] exc_page_fault+0xc2/0x160 [ 61.325345][ T6849] asm_exc_page_fault+0x1e/0x30 [ 61.330204][ T6849] RIP: 0010:__softirqentry_text_end+0x39/0x55 [ 61.336260][ T6849] Code: de 04 e0 ff ba f2 ff ff ff 31 c9 e9 db 35 d3 ff 41 bf f2 ff ff ff 31 c0 e9 1a 34 e1 f8 41 bf f2 ff ff ff 31 ed e9 35 34 e1 f8 <41> be f2 ff ff ff 48 31 c0 e9 42 37 e1 f8 41 be f2 ff ff ff 48 31 [ 61.356144][ T6849] RSP: 0000:ffffc90004d07470 EFLAGS: 00010046 [ 61.362199][ T6849] RAX: 0000000000000000 RBX: ffffc90004d07530 RCX: ffffffff81014192 [ 61.370235][ T6849] RDX: ffff8880940d0000 RSI: ffffffff810141a0 RDI: 0000000000000006 [ 61.378203][ T6849] RBP: 0000000000000000 R08: 0000000000000000 R09: ffff8880940d0007 [ 61.386155][ T6849] R10: 0000000000000000 R11: 0000000000000001 R12: ffffc90004d0753c [ 61.394648][ T6849] R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8880940d0000 [ 61.402769][ T6849] ? perf_callchain_user+0x7f2/0xba0 [ 61.408599][ T6849] ? perf_callchain_user+0x800/0xba0 [ 61.414160][ T6849] get_perf_callchain+0x321/0x620 [ 61.419188][ T6849] ? put_callchain_entry+0x90/0x90 [ 61.424287][ T6849] ? startup_64+0x2/0x30 [ 61.428601][ T6849] ? perf_callchain+0x173/0x1c0 [ 61.433449][ T6849] ? perf_swevent_event+0x144/0x550 [ 61.438840][ T6849] ? tracing_generic_entry_update+0x1ed/0x270 [ 61.445023][ T6849] perf_callchain+0x165/0x1c0 [ 61.449809][ T6849] perf_prepare_sample+0x8fd/0x1d40 [ 61.455228][ T6849] ? perf_event_mmap_output+0xa30/0xa30 [ 61.461010][ T6849] ? perf_tp_event+0x622/0xb50 [ 61.465769][ T6849] ? perf_callchain+0x1c0/0x1c0 [ 61.470612][ T6849] perf_event_output_forward+0xf3/0x270 [ 61.476147][ T6849] ? perf_prepare_sample+0x1d40/0x1d40 [ 61.481611][ T6849] __perf_event_overflow+0x13c/0x370 [ 61.486970][ T6849] perf_swevent_event+0x4b9/0x550 [ 61.492004][ T6849] perf_tp_event+0x2e4/0xb50 [ 61.496609][ T6849] ? perf_event_mmap_output+0xa30/0xa30 [ 61.502190][ T6849] ? __lock_acquire+0x16cb/0x5640 [ 61.507824][ T6849] ? lock_acquire+0x1f1/0xad0 [ 61.512497][ T6849] ? lock_page_memcg+0x30/0x260 [ 61.517364][ T6849] ? lockdep_hardirqs_on_prepare+0x530/0x530 [ 61.523369][ T6849] ? lock_release+0x8e0/0x8e0 [ 61.528124][ T6849] ? alloc_set_pte+0x13b9/0x1ac0 [ 61.533186][ T6849] ? reacquire_held_locks+0x20b/0x530 [ 61.538713][ T6849] ? alloc_set_pte+0x13b9/0x1ac0 [ 61.543631][ T6849] ? perf_trace_run_bpf_submit+0x11c/0x200 [ 61.549442][ T6849] perf_trace_run_bpf_submit+0x11c/0x200 [ 61.555659][ T6849] perf_trace_lock_acquire+0x33f/0x520 [ 61.561645][ T6849] ? SOFTIRQ_verbose+0x10/0x10 [ 61.566647][ T6849] ? handle_mm_fault+0x3db1/0x45e0 [ 61.571856][ T6849] ? lock_downgrade+0x830/0x830 [ 61.577598][ T6849] lock_acquire+0x382/0xad0 [ 61.582208][ T6849] ? do_user_addr_fault+0x25e/0xbf0 [ 61.587518][ T6849] ? lock_release+0x8e0/0x8e0 [ 61.592229][ T6849] ? _raw_spin_unlock+0x24/0x40 [ 61.597178][ T6849] ? handle_mm_fault+0xb78/0x45e0 [ 61.602215][ T6849] ? find_held_lock+0x2d/0x110 [ 61.607027][ T6849] ? do_user_addr_fault+0x5d1/0xbf0 [ 61.612413][ T6849] down_read_trylock+0x193/0x350 [ 61.617495][ T6849] ? do_user_addr_fault+0x25e/0xbf0 [ 61.622880][ T6849] ? rwsem_can_spin_on_owner+0x280/0x280 [ 61.628960][ T6849] ? do_user_addr_fault+0x4d2/0xbf0 [ 61.634148][ T6849] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 61.640205][ T6849] do_user_addr_fault+0x25e/0xbf0 [ 61.645280][ T6849] ? irqentry_enter+0x3e/0x50 [ 61.649958][ T6849] ? rcu_read_lock_sched_held+0x3a/0xb0 [ 61.655505][ T6849] exc_page_fault+0xa8/0x160 [ 61.660089][ T6849] ? asm_exc_page_fault+0x8/0x30 [ 61.667871][ T6849] asm_exc_page_fault+0x1e/0x30 [ 61.672728][ T6849] RIP: 0033:0x49f3ad [ 61.676609][ T6849] Code: fb bf 30 00 00 00 e8 92 f4 f7 ff 48 89 df 31 c9 31 d2 5b 48 89 c6 e9 52 ff ff ff 66 90 48 85 ff 41 54 55 53 0f 84 e3 00 00 00 <8b> 07 85 c0 0f 84 d9 00 00 00 4c 8b 25 2a bc 22 00 48 89 fd 4d 85 [ 61.696281][ T6849] RSP: 002b:00007ffee8457ee0 EFLAGS: 00010206 [ 61.702340][ T6849] RAX: 000000000049f4d0 RBX: 0000000000000001 RCX: 00000000006d1190 [ 61.710536][ T6849] RDX: 0000000000402140 RSI: 0000000000000000 RDI: 00000000004bf848 [ 61.718509][ T6849] RBP: 00007ffee8457f00 R08: 00000000004002c8 R09: 00000000004002c8 [ 61.726608][ T6849] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 61.735213][ T6849] R13: 00000000006d1180 R14: 0000000000000000 R15: 0000000000000000 [ 61.744779][ T6849] Kernel Offset: disabled [ 61.749105][ T6849] Rebooting in 86400 seconds..