[[0;32m OK [0m] Reached target Login Prompts.
[[0;32m OK [0m] Reached target Multi-User System.
[[0;32m OK [0m] Reached target Graphical Interface.
Starting Update UTMP about System Runlevel Changes...
[[0;32m OK [0m] Started Update UTMP about System Runlevel Changes.
Debian GNU/Linux 9 syzkaller ttyS0
Warning: Permanently added '10.128.10.30' (ECDSA) to the list of known hosts.
executing program
executing program
syzkaller login: [ 844.569463][ T7073] ==================================================================
[ 844.569638][ T7073] BUG: KASAN: null-ptr-deref in uncore_pmu_event_add+0xa25/0x16d0
[ 844.569649][ T7073] Read of size 8 at addr 0000000000000000 by task syz-executor764/7073
[ 844.569653][ T7073]
[ 844.569668][ T7073] CPU: 0 PID: 7073 Comm: syz-executor764 Not tainted 5.7.0-rc1-next-20200415-syzkaller #0
[ 844.569676][ T7073] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 844.569701][ T7073] Call Trace:
[ 844.569734][ T7073]
[ 844.569805][ T7073] dump_stack+0x188/0x20d
[ 844.569823][ T7073] ? uncore_pmu_event_add+0xa25/0x16d0
[ 844.569884][ T7073] __kasan_report.cold+0x5/0x4d
[ 844.569902][ T7073] ? uncore_pmu_event_add+0xa25/0x16d0
[ 844.569919][ T7073] ? uncore_pmu_event_add+0xa25/0x16d0
[ 844.569931][ T7073] kasan_report+0x33/0x50
[ 844.569953][ T7073] check_memory_region+0x141/0x190
[ 844.569969][ T7073] uncore_pmu_event_add+0xa25/0x16d0
[ 844.570036][ T7073] ? interrupt_entry+0xb8/0xc0
[ 844.570050][ T7073] ? apic_timer_interrupt+0xa/0x20
[ 844.570056][ T7073]
[ 844.570104][ T7073] ? vga16fb_fillrect+0x9da/0x1960
[ 844.570118][ T7073] ? vga16fb_fillrect+0x9c6/0x1960
[ 844.570161][ T7073] ? __sanitizer_cov_trace_pc+0x31/0x60
[ 844.570176][ T7073] ? vga16fb_fillrect+0x9c6/0x1960
[ 844.570192][ T7073] ? memcpy+0x39/0x60
[ 844.570229][ T7073] ? bit_clear_margins+0x3f6/0x4a0
[ 844.570244][ T7073] ? bit_bmove+0x210/0x210
[ 844.570259][ T7073] ? vesafb_probe.cold+0x1162/0x1162
[ 844.570301][ T7073] ? fbcon_clear_margins+0x1de/0x240
[ 844.570317][ T7073] ? fbcon_switch+0xd21/0x1740
[ 844.570337][ T7073] ? fbcon_set_def_font+0x370/0x370
[ 844.570365][ T7073] ? fbcon_cursor+0x477/0x650
[ 844.570377][ T7073] ? bit_clear+0x4e0/0x4e0
[ 844.570412][ T7073] ? is_console_locked+0x5/0x10
[ 844.570424][ T7073] ? fbcon_set_origin+0x26/0x50
[ 844.570467][ T7073] ? redraw_screen+0x2ae/0x770
[ 844.570479][ T7073] ? vesafb_probe.cold+0x1162/0x1162
[ 844.570494][ T7073] ? respond_string+0x290/0x290
[ 844.570510][ T7073] ? fbcon_set_palette+0x3b1/0x4a0
[ 844.570527][ T7073] ? fbcon_modechanged+0x5c3/0x790
[ 844.570545][ T7073] ? fbcon_set_all_vcs+0x3b3/0x460
[ 844.570564][ T7073] ? fbcon_update_vcs+0x26/0x50
[ 844.570578][ T7073] ? fb_set_var+0xad0/0xd40
[ 844.570593][ T7073] ? fb_blank+0x190/0x190
[ 844.570617][ T7073] ? mark_held_locks+0xe0/0xe0
[ 844.570666][ T7073] ? _raw_spin_unlock_irqrestore+0x62/0xe0
[ 844.570685][ T7073] ? do_fb_ioctl+0x390/0x6e0
[ 844.570700][ T7073] ? fb_mmap+0x550/0x550
[ 844.570786][ T7073] ? tomoyo_execute_permission+0x470/0x470
[ 844.570818][ T7073] ? __sanitizer_cov_trace_switch+0x45/0x70
[ 844.570878][ T7073] ? do_vfs_ioctl+0x50c/0x12d0
[ 844.570908][ T7073] ? up_read+0x1a8/0x750
[ 844.570924][ T7073] ? down_read_nested+0x430/0x430
[ 844.570948][ T7073] ? fb_ioctl+0xdd/0x130
[ 844.570961][ T7073] ? do_fb_ioctl+0x6e0/0x6e0
[ 844.570974][ T7073] ? ksys_ioctl+0x11a/0x180
[ 844.570991][ T7073] ? __x64_sys_ioctl+0x6f/0xb0
[ 844.571004][ T7073] ? lockdep_hardirqs_on+0x463/0x620
[ 844.571041][ T7073] ? do_syscall_64+0xf6/0x7d0
[ 844.571058][ T7073] ? entry_SYSCALL_64_after_hwframe+0x49/0xb3
[ 844.571079][ T7073] ==================================================================
[ 844.571083][ T7073] Disabling lock debugging due to kernel taint
[ 844.571090][ T7073] Kernel panic - not syncing: panic_on_warn set ...
[ 844.571103][ T7073] CPU: 0 PID: 7073 Comm: syz-executor764 Tainted: G B 5.7.0-rc1-next-20200415-syzkaller #0
[ 844.571110][ T7073] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 844.571113][ T7073] Call Trace:
[ 844.571117][ T7073]
[ 844.571128][ T7073] dump_stack+0x188/0x20d
[ 844.571176][ T7073] panic+0x2e3/0x75c
[ 844.571189][ T7073] ? add_taint.cold+0x16/0x16
[ 844.571205][ T7073] ? uncore_pmu_event_add+0xa25/0x16d0
[ 844.571223][ T7073] ? trace_hardirqs_off+0x50/0x220
[ 844.571234][ T7073] ? trace_hardirqs_off+0x50/0x220
[ 844.571248][ T7073] ? uncore_pmu_event_add+0xa25/0x16d0
[ 844.571260][ T7073] end_report+0x4d/0x53
[ 844.571272][ T7073] __kasan_report.cold+0xd/0x4d
[ 844.571287][ T7073] ? uncore_pmu_event_add+0xa25/0x16d0
[ 844.571300][ T7073] ? uncore_pmu_event_add+0xa25/0x16d0
[ 844.571311][ T7073] kasan_report+0x33/0x50
[ 844.571324][ T7073] check_memory_region+0x141/0x190
[ 844.571338][ T7073] uncore_pmu_event_add+0xa25/0x16d0
[ 844.571348][ T7073] ? interrupt_entry+0xb8/0xc0
[ 844.571360][ T7073] ? apic_timer_interrupt+0xa/0x20
[ 844.571364][ T7073]
[ 844.571377][ T7073] ? vga16fb_fillrect+0x9da/0x1960
[ 844.571386][ T7073] ? vga16fb_fillrect+0x9c6/0x1960
[ 844.571396][ T7073] ? __sanitizer_cov_trace_pc+0x31/0x60
[ 844.571408][ T7073] ? vga16fb_fillrect+0x9c6/0x1960
[ 844.571419][ T7073] ? memcpy+0x39/0x60
[ 844.571432][ T7073] ? bit_clear_margins+0x3f6/0x4a0
[ 844.571443][ T7073] ? bit_bmove+0x210/0x210
[ 844.571454][ T7073] ? vesafb_probe.cold+0x1162/0x1162
[ 844.571471][ T7073] ? fbcon_clear_margins+0x1de/0x240
[ 844.571483][ T7073] ? fbcon_switch+0xd21/0x1740
[ 844.571497][ T7073] ? fbcon_set_def_font+0x370/0x370
[ 844.571513][ T7073] ? fbcon_cursor+0x477/0x650
[ 844.571523][ T7073] ? bit_clear+0x4e0/0x4e0
[ 844.571534][ T7073] ? is_console_locked+0x5/0x10
[ 844.571544][ T7073] ? fbcon_set_origin+0x26/0x50
[ 844.571557][ T7073] ? redraw_screen+0x2ae/0x770
[ 844.571567][ T7073] ? vesafb_probe.cold+0x1162/0x1162
[ 844.571580][ T7073] ? respond_string+0x290/0x290
[ 844.571592][ T7073] ? fbcon_set_palette+0x3b1/0x4a0
[ 844.571604][ T7073] ? fbcon_modechanged+0x5c3/0x790
[ 844.571617][ T7073] ? fbcon_set_all_vcs+0x3b3/0x460
[ 844.571630][ T7073] ? fbcon_update_vcs+0x26/0x50
[ 844.571642][ T7073] ? fb_set_var+0xad0/0xd40
[ 844.571654][ T7073] ? fb_blank+0x190/0x190
[ 844.571667][ T7073] ? mark_held_locks+0xe0/0xe0
[ 844.571694][ T7073] ? _raw_spin_unlock_irqrestore+0x62/0xe0
[ 844.571708][ T7073] ? do_fb_ioctl+0x390/0x6e0
[ 844.571719][ T7073] ? fb_mmap+0x550/0x550
[ 844.571732][ T7073] ? tomoyo_execute_permission+0x470/0x470
[ 844.571751][ T7073] ? __sanitizer_cov_trace_switch+0x45/0x70
[ 844.571763][ T7073] ? do_vfs_ioctl+0x50c/0x12d0
[ 844.571781][ T7073] ? up_read+0x1a8/0x750
[ 844.571793][ T7073] ? down_read_nested+0x430/0x430
[ 844.571806][ T7073] ? fb_ioctl+0xdd/0x130
[ 844.571818][ T7073] ? do_fb_ioctl+0x6e0/0x6e0
[ 844.571829][ T7073] ? ksys_ioctl+0x11a/0x180
[ 844.571843][ T7073] ? __x64_sys_ioctl+0x6f/0xb0
[ 844.571854][ T7073] ? lockdep_hardirqs_on+0x463/0x620
[ 844.571867][ T7073] ? do_syscall_64+0xf6/0x7d0
[ 844.571880][ T7073] ? entry_SYSCALL_64_after_hwframe+0x49/0xb3
[ 845.748127][ T7073] Shutting down cpus with NMI
[ 845.750244][ T7073] Kernel Offset: disabled
[ 846.436980][ T7073] Rebooting in 86400 seconds..