[ 105.918982][ T27] audit: type=1400 audit(1579708262.795:37): avc: denied { watch } for pid=10335 comm="restorecond" path="/root/.ssh" dev="sda1" ino=16179 scontext=system_u:system_r:kernel_t:s0 tcontext=unconfined_u:object_r:ssh_home_t:s0 tclass=dir permissive=1
[ 105.967241][ T27] audit: type=1400 audit(1579708262.795:38): avc: denied { watch } for pid=10335 comm="restorecond" path="/etc/selinux/restorecond.conf" dev="sda1" ino=2232 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1
[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[ 106.185867][ T27] audit: type=1800 audit(1579708263.055:39): pid=10242 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0
[ 106.208076][ T27] audit: type=1800 audit(1579708263.055:40): pid=10242 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0
Debian GNU/Linux 7 syzkaller ttyS0
syzkaller login: [ 108.719519][ T27] audit: type=1400 audit(1579708265.595:41): avc: denied { map } for pid=10419 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1
Warning: Permanently added '10.128.1.62' (ECDSA) to the list of known hosts.
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[ 115.401625][ T27] audit: type=1400 audit(1579708272.275:42): avc: denied { map } for pid=10431 comm="syz-executor251" path="/root/syz-executor251196857" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1
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[ 115.431359][ T27] audit: type=1400 audit(1579708272.275:43): avc: denied { create } for pid=10432 comm="syz-executor251" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1
[ 115.458362][ T27] audit: type=1400 audit(1579708272.285:44): avc: denied { write } for pid=10432 comm="syz-executor251" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1
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[ 116.437113][ C1] ==================================================================
[ 116.445408][ C1] BUG: KASAN: slab-out-of-bounds in bitmap_ipmac_gc+0x119/0x590
[ 116.453019][ C1] Read of size 8 at addr ffff888094a5ea40 by task syz-executor251/10431
[ 116.461316][ C1]
[ 116.463635][ C1] CPU: 1 PID: 10431 Comm: syz-executor251 Not tainted 5.5.0-rc7-syzkaller #0
[ 116.472369][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 116.482405][ C1] Call Trace:
[ 116.485670][ C1]
[ 116.488506][ C1] dump_stack+0x197/0x210
[ 116.492813][ C1] ? bitmap_ipmac_gc+0x119/0x590
[ 116.497768][ C1] print_address_description.constprop.0.cold+0xd4/0x30b
[ 116.504768][ C1] ? bitmap_ipmac_gc+0x119/0x590
[ 116.509683][ C1] ? bitmap_ipmac_gc+0x119/0x590
[ 116.514598][ C1] __kasan_report.cold+0x1b/0x41
[ 116.519510][ C1] ? bitmap_ipmac_gc+0x119/0x590
[ 116.524424][ C1] kasan_report+0x12/0x20
[ 116.528769][ C1] check_memory_region+0x134/0x1a0
[ 116.533856][ C1] __kasan_check_read+0x11/0x20
[ 116.538681][ C1] bitmap_ipmac_gc+0x119/0x590
[ 116.543426][ C1] call_timer_fn+0x1ac/0x780
[ 116.547990][ C1] ? bitmap_ipmac_list+0x1080/0x1080
[ 116.553273][ C1] ? msleep_interruptible+0x150/0x150
[ 116.558625][ C1] ? run_timer_softirq+0x6b1/0x1790
[ 116.563808][ C1] ? trace_hardirqs_on+0x67/0x240
[ 116.568809][ C1] ? bitmap_ipmac_list+0x1080/0x1080
[ 116.574072][ C1] ? bitmap_ipmac_list+0x1080/0x1080
[ 116.579335][ C1] run_timer_softirq+0x6c3/0x1790
[ 116.584340][ C1] ? add_timer+0x930/0x930
[ 116.588736][ C1] ? rcu_lockdep_current_cpu_online+0xe3/0x130
[ 116.594867][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0
[ 116.600421][ C1] ? rcu_read_lock_any_held.part.0+0x50/0x50
[ 116.607421][ C1] ? trace_hardirqs_on+0x67/0x240
[ 116.612424][ C1] __do_softirq+0x262/0x98c
[ 116.616914][ C1] ? sched_clock_cpu+0x1b/0x1b0
[ 116.621763][ C1] irq_exit+0x19b/0x1e0
[ 116.625898][ C1] smp_apic_timer_interrupt+0x1a3/0x610
[ 116.631421][ C1] apic_timer_interrupt+0xf/0x20
[ 116.636346][ C1]
[ 116.639265][ C1] RIP: 0010:_raw_spin_unlock_irqrestore+0x90/0xe0
[ 116.645653][ C1] Code: 48 c7 c0 98 33 93 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 39 48 83 3d 6f e7 be 01 00 74 24 48 89 df 57 9d <0f> 1f 44 00 00 bf 01 00 00 00 e8 51 3e 7c f9 65 8b 05 42 d2 2d 78
[ 116.665369][ C1] RSP: 0018:ffffc90001fb7870 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
[ 116.673801][ C1] RAX: 1ffffffff1326673 RBX: 0000000000000282 RCX: 0000000000000000
[ 116.681891][ C1] RDX: dffffc0000000000 RSI: 0000000000000006 RDI: 0000000000000282
[ 116.689838][ C1] RBP: ffffc90001fb7880 R08: ffff888091fb2340 R09: 0000000000000000
[ 116.697786][ C1] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8b847548
[ 116.705739][ C1] R13: ffff88809d537850 R14: dffffc0000000000 R15: 1ffff920003f6f16
[ 116.713710][ C1] debug_object_activate+0x247/0x470
[ 116.718975][ C1] ? debug_object_init_on_stack+0x20/0x20
[ 116.724684][ C1] ? find_held_lock+0x35/0x130
[ 116.729441][ C1] ? __cleanup_sighand+0x8c/0xc0
[ 116.734370][ C1] ? cpumask_test_cpu.constprop.0+0x60/0x60
[ 116.740285][ C1] __call_rcu+0x32/0x740
[ 116.744507][ C1] ? lockdep_hardirqs_on+0x421/0x5e0
[ 116.749773][ C1] call_rcu+0xb/0x10
[ 116.753683][ C1] put_task_struct_rcu_user+0x8a/0xc0
[ 116.759037][ C1] release_task+0xc81/0x15a0
[ 116.763701][ C1] wait_consider_task+0x2e87/0x3ae0
[ 116.768894][ C1] ? release_task+0x15a0/0x15a0
[ 116.773771][ C1] ? lock_acquire+0x190/0x410
[ 116.778429][ C1] ? do_wait+0x3c3/0xa10
[ 116.782651][ C1] ? __kasan_check_write+0x14/0x20
[ 116.787777][ C1] do_wait+0x452/0xa10
[ 116.791834][ C1] ? wait_consider_task+0x3ae0/0x3ae0
[ 116.797216][ C1] ? __might_fault+0x12b/0x1e0
[ 116.801961][ C1] kernel_wait4+0x171/0x290
[ 116.806451][ C1] ? __ia32_sys_waitid+0x140/0x140
[ 116.811583][ C1] ? task_stopped_code+0x180/0x180
[ 116.817642][ C1] __do_sys_wait4+0x147/0x160
[ 116.822307][ C1] ? kernel_wait4+0x290/0x290
[ 116.826973][ C1] ? _copy_to_user+0x118/0x160
[ 116.831732][ C1] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20
[ 116.837959][ C1] ? put_timespec64+0xda/0x140
[ 116.842710][ C1] ? ns_to_kernel_old_timeval+0x100/0x100
[ 116.848458][ C1] ? trace_hardirqs_on_thunk+0x1a/0x1c
[ 116.853903][ C1] ? trace_hardirqs_on_thunk+0x1a/0x1c
[ 116.859349][ C1] ? do_syscall_64+0x26/0x790
[ 116.864012][ C1] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 116.870069][ C1] ? do_syscall_64+0x26/0x790
[ 116.874734][ C1] __x64_sys_wait4+0x97/0xf0
[ 116.879311][ C1] do_syscall_64+0xfa/0x790
[ 116.883815][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 116.889688][ C1] RIP: 0033:0x40126a
[ 116.893572][ C1] Code: c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 8b 05 6e 14 2d 00 85 c0 75 36 45 31 d2 48 63 d2 48 63 ff b8 3d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 c3 0f 1f 44 00 00 48 c7 c2 d0 ff ff ff f7
[ 116.913305][ C1] RSP: 002b:00007ffdde949088 EFLAGS: 00000246 ORIG_RAX: 000000000000003d
[ 116.921696][ C1] RAX: ffffffffffffffda RBX: 0000000000002a20 RCX: 000000000040126a
[ 116.929658][ C1] RDX: 0000000040000001 RSI: 00007ffdde949094 RDI: ffffffffffffffff
[ 116.937656][ C1] RBP: 000000000001c6b9 R08: 0000000000000000 R09: 0000000001470880
[ 116.945608][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402220
[ 116.953576][ C1] R13: 00000000004022b0 R14: 0000000000000000 R15: 0000000000000000
[ 116.961532][ C1]
[ 116.963841][ C1] Allocated by task 10432:
[ 116.968236][ C1] save_stack+0x23/0x90
[ 116.973633][ C1] __kasan_kmalloc.constprop.0+0xcf/0xe0
[ 116.980234][ C1] kasan_kmalloc+0x9/0x10
[ 116.984540][ C1] __kmalloc+0x163/0x770
[ 116.988759][ C1] ip_set_alloc+0x38/0x5e
[ 116.993159][ C1] bitmap_ipmac_create+0x4e8/0xa00
[ 116.998252][ C1] ip_set_create+0x6f1/0x1500
[ 117.002911][ C1] nfnetlink_rcv_msg+0xcf2/0xfb0
[ 117.009128][ C1] netlink_rcv_skb+0x177/0x450
[ 117.013991][ C1] nfnetlink_rcv+0x1ba/0x460
[ 117.018558][ C1] netlink_unicast+0x58c/0x7d0
[ 117.023301][ C1] netlink_sendmsg+0x91c/0xea0
[ 117.028039][ C1] sock_sendmsg+0xd7/0x130
[ 117.032439][ C1] ____sys_sendmsg+0x753/0x880
[ 117.037186][ C1] ___sys_sendmsg+0x100/0x170
[ 117.041838][ C1] __sys_sendmsg+0x105/0x1d0
[ 117.046403][ C1] __x64_sys_sendmsg+0x78/0xb0
[ 117.051145][ C1] do_syscall_64+0xfa/0x790
[ 117.055633][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 117.061495][ C1]
[ 117.063831][ C1] Freed by task 0:
[ 117.067790][ C1] save_stack+0x23/0x90
[ 117.071921][ C1] __kasan_slab_free+0x102/0x150
[ 117.076832][ C1] kasan_slab_free+0xe/0x10
[ 117.081312][ C1] kfree+0x10a/0x2c0
[ 117.085182][ C1] security_cred_free+0xa9/0x110
[ 117.090105][ C1] put_cred_rcu+0x129/0x4b0
[ 117.094586][ C1] rcu_core+0x570/0x1540
[ 117.098803][ C1] rcu_core_si+0x9/0x10
[ 117.102932][ C1] __do_softirq+0x262/0x98c
[ 117.107403][ C1]
[ 117.109711][ C1] The buggy address belongs to the object at ffff888094a5ea40
[ 117.109711][ C1] which belongs to the cache kmalloc-32 of size 32
[ 117.123566][ C1] The buggy address is located 0 bytes inside of
[ 117.123566][ C1] 32-byte region [ffff888094a5ea40, ffff888094a5ea60)
[ 117.136581][ C1] The buggy address belongs to the page:
[ 117.142193][ C1] page:ffffea0002529780 refcount:1 mapcount:0 mapping:ffff8880aa4001c0 index:0xffff888094a5efc1
[ 117.152579][ C1] raw: 00fffe0000000200 ffffea0002910708 ffffea0002a262c8 ffff8880aa4001c0
[ 117.161147][ C1] raw: ffff888094a5efc1 ffff888094a5e000 000000010000003a 0000000000000000
[ 117.169703][ C1] page dumped because: kasan: bad access detected
[ 117.176100][ C1]
[ 117.178413][ C1] Memory state around the buggy address:
[ 117.184029][ C1] ffff888094a5e900: 00 00 01 fc fc fc fc fc 00 01 fc fc fc fc fc fc
[ 117.192066][ C1] ffff888094a5e980: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc
[ 117.200106][ C1] >ffff888094a5ea00: 00 00 01 fc fc fc fc fc 04 fc fc fc fc fc fc fc
[ 117.208147][ C1] ^
[ 117.214283][ C1] ffff888094a5ea80: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc
[ 117.222349][ C1] ffff888094a5eb00: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc
[ 117.230384][ C1] ==================================================================
[ 117.238418][ C1] Disabling lock debugging due to kernel taint
[ 117.244621][ C1] Kernel panic - not syncing: panic_on_warn set ...
[ 117.251195][ C1] CPU: 1 PID: 10431 Comm: syz-executor251 Tainted: G B 5.5.0-rc7-syzkaller #0
[ 117.261412][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 117.271450][ C1] Call Trace:
[ 117.274713][ C1]
[ 117.277549][ C1] dump_stack+0x197/0x210
[ 117.281856][ C1] panic+0x2e3/0x75c
[ 117.285759][ C1] ? add_taint.cold+0x16/0x16
[ 117.290409][ C1] ? retint_kernel+0x2b/0x2b
[ 117.295106][ C1] ? trace_hardirqs_on+0x5e/0x240
[ 117.301064][ C1] ? bitmap_ipmac_gc+0x119/0x590
[ 117.305977][ C1] end_report+0x47/0x4f
[ 117.310114][ C1] ? bitmap_ipmac_gc+0x119/0x590
[ 117.315032][ C1] __kasan_report.cold+0xe/0x41
[ 117.319857][ C1] ? bitmap_ipmac_gc+0x119/0x590
[ 117.325913][ C1] kasan_report+0x12/0x20
[ 117.330216][ C1] check_memory_region+0x134/0x1a0
[ 117.335309][ C1] __kasan_check_read+0x11/0x20
[ 117.340133][ C1] bitmap_ipmac_gc+0x119/0x590
[ 117.344872][ C1] call_timer_fn+0x1ac/0x780
[ 117.349437][ C1] ? bitmap_ipmac_list+0x1080/0x1080
[ 117.354698][ C1] ? msleep_interruptible+0x150/0x150
[ 117.360052][ C1] ? run_timer_softirq+0x6b1/0x1790
[ 117.365230][ C1] ? trace_hardirqs_on+0x67/0x240
[ 117.370226][ C1] ? bitmap_ipmac_list+0x1080/0x1080
[ 117.375483][ C1] ? bitmap_ipmac_list+0x1080/0x1080
[ 117.380746][ C1] run_timer_softirq+0x6c3/0x1790
[ 117.385763][ C1] ? add_timer+0x930/0x930
[ 117.390206][ C1] ? rcu_lockdep_current_cpu_online+0xe3/0x130
[ 117.396347][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0
[ 117.401873][ C1] ? rcu_read_lock_any_held.part.0+0x50/0x50
[ 117.407829][ C1] ? trace_hardirqs_on+0x67/0x240
[ 117.412829][ C1] __do_softirq+0x262/0x98c
[ 117.417309][ C1] ? sched_clock_cpu+0x1b/0x1b0
[ 117.422134][ C1] irq_exit+0x19b/0x1e0
[ 117.426269][ C1] smp_apic_timer_interrupt+0x1a3/0x610
[ 117.431789][ C1] apic_timer_interrupt+0xf/0x20
[ 117.436693][ C1]
[ 117.439608][ C1] RIP: 0010:_raw_spin_unlock_irqrestore+0x90/0xe0
[ 117.445996][ C1] Code: 48 c7 c0 98 33 93 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 39 48 83 3d 6f e7 be 01 00 74 24 48 89 df 57 9d <0f> 1f 44 00 00 bf 01 00 00 00 e8 51 3e 7c f9 65 8b 05 42 d2 2d 78
[ 117.465581][ C1] RSP: 0018:ffffc90001fb7870 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
[ 117.473969][ C1] RAX: 1ffffffff1326673 RBX: 0000000000000282 RCX: 0000000000000000
[ 117.481945][ C1] RDX: dffffc0000000000 RSI: 0000000000000006 RDI: 0000000000000282
[ 117.489896][ C1] RBP: ffffc90001fb7880 R08: ffff888091fb2340 R09: 0000000000000000
[ 117.497847][ C1] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8b847548
[ 117.505792][ C1] R13: ffff88809d537850 R14: dffffc0000000000 R15: 1ffff920003f6f16
[ 117.513765][ C1] debug_object_activate+0x247/0x470
[ 117.519039][ C1] ? debug_object_init_on_stack+0x20/0x20
[ 117.524743][ C1] ? find_held_lock+0x35/0x130
[ 117.529486][ C1] ? __cleanup_sighand+0x8c/0xc0
[ 117.534400][ C1] ? cpumask_test_cpu.constprop.0+0x60/0x60
[ 117.540265][ C1] __call_rcu+0x32/0x740
[ 117.544479][ C1] ? lockdep_hardirqs_on+0x421/0x5e0
[ 117.549740][ C1] call_rcu+0xb/0x10
[ 117.553613][ C1] put_task_struct_rcu_user+0x8a/0xc0
[ 117.558958][ C1] release_task+0xc81/0x15a0
[ 117.563539][ C1] wait_consider_task+0x2e87/0x3ae0
[ 117.568719][ C1] ? release_task+0x15a0/0x15a0
[ 117.573552][ C1] ? lock_acquire+0x190/0x410
[ 117.578210][ C1] ? do_wait+0x3c3/0xa10
[ 117.582438][ C1] ? __kasan_check_write+0x14/0x20
[ 117.587527][ C1] do_wait+0x452/0xa10
[ 117.591586][ C1] ? wait_consider_task+0x3ae0/0x3ae0
[ 117.596946][ C1] ? __might_fault+0x12b/0x1e0
[ 117.601688][ C1] kernel_wait4+0x171/0x290
[ 117.606186][ C1] ? __ia32_sys_waitid+0x140/0x140
[ 117.611291][ C1] ? task_stopped_code+0x180/0x180
[ 117.616379][ C1] __do_sys_wait4+0x147/0x160
[ 117.621041][ C1] ? kernel_wait4+0x290/0x290
[ 117.625697][ C1] ? _copy_to_user+0x118/0x160
[ 117.630447][ C1] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20
[ 117.637619][ C1] ? put_timespec64+0xda/0x140
[ 117.642376][ C1] ? ns_to_kernel_old_timeval+0x100/0x100
[ 117.648079][ C1] ? trace_hardirqs_on_thunk+0x1a/0x1c
[ 117.653517][ C1] ? trace_hardirqs_on_thunk+0x1a/0x1c
[ 117.658959][ C1] ? do_syscall_64+0x26/0x790
[ 117.663616][ C1] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 117.669656][ C1] ? do_syscall_64+0x26/0x790
[ 117.674329][ C1] __x64_sys_wait4+0x97/0xf0
[ 117.678899][ C1] do_syscall_64+0xfa/0x790
[ 117.683383][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 117.689254][ C1] RIP: 0033:0x40126a
[ 117.693126][ C1] Code: c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 8b 05 6e 14 2d 00 85 c0 75 36 45 31 d2 48 63 d2 48 63 ff b8 3d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 c3 0f 1f 44 00 00 48 c7 c2 d0 ff ff ff f7
[ 117.712701][ C1] RSP: 002b:00007ffdde949088 EFLAGS: 00000246 ORIG_RAX: 000000000000003d
[ 117.721089][ C1] RAX: ffffffffffffffda RBX: 0000000000002a20 RCX: 000000000040126a
[ 117.729037][ C1] RDX: 0000000040000001 RSI: 00007ffdde949094 RDI: ffffffffffffffff
[ 117.736992][ C1] RBP: 000000000001c6b9 R08: 0000000000000000 R09: 0000000001470880
[ 117.744949][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402220
[ 117.752894][ C1] R13: 00000000004022b0 R14: 0000000000000000 R15: 0000000000000000
[ 117.761899][ C1] Kernel Offset: disabled
[ 117.766213][ C1] Rebooting in 86400 seconds..