[ 91.323636][ T27] audit: type=1800 audit(1579476591.484:26): pid=9583 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 92.086229][ T27] kauditd_printk_skb: 2 callbacks suppressed [ 92.086241][ T27] audit: type=1800 audit(1579476592.274:29): pid=9583 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 92.113349][ T27] audit: type=1800 audit(1579476592.274:30): pid=9583 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.180' (ECDSA) to the list of known hosts. 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 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 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 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 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: [ 104.646325][ C0] ================================================================== [ 104.654640][ C0] BUG: KASAN: slab-out-of-bounds in bitmap_port_gc+0x112/0x4f0 [ 104.662191][ C0] Read of size 8 at addr ffff8880a8a8c040 by task swapper/0/0 [ 104.669640][ C0] [ 104.671984][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc6-syzkaller #0 [ 104.679886][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 104.690912][ C0] Call Trace: executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 104.694198][ C0] [ 104.697064][ C0] dump_stack+0x197/0x210 [ 104.701408][ C0] ? bitmap_port_gc+0x112/0x4f0 [ 104.706278][ C0] print_address_description.constprop.0.cold+0xd4/0x30b [ 104.713310][ C0] ? bitmap_port_gc+0x112/0x4f0 [ 104.718198][ C0] ? bitmap_port_gc+0x112/0x4f0 [ 104.723162][ C0] __kasan_report.cold+0x1b/0x41 [ 104.728109][ C0] ? bitmap_port_gc+0x112/0x4f0 [ 104.732971][ C0] kasan_report+0x12/0x20 [ 104.737307][ C0] check_memory_region+0x134/0x1a0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 104.742428][ C0] __kasan_check_read+0x11/0x20 [ 104.747286][ C0] bitmap_port_gc+0x112/0x4f0 [ 104.751986][ C0] call_timer_fn+0x1ac/0x780 [ 104.756586][ C0] ? bitmap_port_test+0x170/0x170 [ 104.761621][ C0] ? msleep_interruptible+0x150/0x150 [ 104.767007][ C0] ? run_timer_softirq+0x6b1/0x1790 [ 104.772233][ C0] ? trace_hardirqs_on+0x67/0x240 [ 104.777393][ C0] ? bitmap_port_test+0x170/0x170 [ 104.782681][ C0] ? bitmap_port_test+0x170/0x170 [ 104.787722][ C0] run_timer_softirq+0x6c3/0x1790 [ 104.792770][ C0] ? add_timer+0x930/0x930 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 104.797200][ C0] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 104.803482][ C0] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 104.809037][ C0] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 104.815173][ C0] ? trace_hardirqs_on+0x67/0x240 [ 104.820214][ C0] __do_softirq+0x262/0x98c [ 104.824736][ C0] ? sched_clock_cpu+0x1b/0x1b0 [ 104.829612][ C0] irq_exit+0x19b/0x1e0 [ 104.833781][ C0] smp_apic_timer_interrupt+0x1a3/0x610 [ 104.839475][ C0] apic_timer_interrupt+0xf/0x20 [ 104.844413][ C0] executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 104.847353][ C0] RIP: 0010:native_safe_halt+0xe/0x10 [ 104.852714][ C0] Code: 48 92 de f9 eb 8a cc cc cc cc cc cc e9 07 00 00 00 0f 00 2d 54 54 54 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 44 54 54 00 fb f4 cc 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 4e 60 8e f9 e8 b9 [ 104.872327][ C0] RSP: 0018:ffffffff89807ce8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 [ 104.880763][ C0] RAX: 1ffffffff1326676 RBX: ffffffff8987a140 RCX: 0000000000000000 [ 104.888730][ C0] RDX: dffffc0000000000 RSI: 0000000000000006 RDI: ffffffff8987a9d4 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 104.896722][ C0] RBP: ffffffff89807d18 R08: ffffffff8987a140 R09: 0000000000000000 [ 104.904709][ C0] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 [ 104.912686][ C0] R13: ffffffff8a7b4cc0 R14: 0000000000000000 R15: 0000000000000000 [ 104.920686][ C0] ? default_idle+0x4e/0x360 [ 104.925294][ C0] arch_cpu_idle+0xa/0x10 [ 104.929745][ C0] default_idle_call+0x84/0xb0 [ 104.934637][ C0] do_idle+0x3c8/0x6e0 [ 104.938752][ C0] ? arch_cpu_idle_exit+0x80/0x80 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 104.943777][ C0] ? trace_hardirqs_on+0x67/0x240 [ 104.948796][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 104.955143][ C0] ? debug_smp_processor_id+0x33/0x18a [ 104.960624][ C0] cpu_startup_entry+0x1b/0x20 [ 104.965402][ C0] rest_init+0x23b/0x371 [ 104.969667][ C0] arch_call_rest_init+0xe/0x1b [ 104.974531][ C0] start_kernel+0x904/0x943 [ 104.979044][ C0] ? mem_encrypt_init+0xb/0xb [ 104.983864][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 104.990108][ C0] ? x86_family+0x41/0x50 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 104.994445][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 105.000703][ C0] x86_64_start_reservations+0x29/0x2b [ 105.006170][ C0] x86_64_start_kernel+0x77/0x7b [ 105.011114][ C0] secondary_startup_64+0xa4/0xb0 [ 105.016146][ C0] [ 105.018498][ C0] Allocated by task 9738: [ 105.022819][ C0] save_stack+0x23/0x90 [ 105.027118][ C0] __kasan_kmalloc.constprop.0+0xcf/0xe0 [ 105.032763][ C0] kasan_kmalloc+0x9/0x10 [ 105.037100][ C0] __kmalloc+0x163/0x770 [ 105.041343][ C0] ip_set_alloc+0x38/0x5e executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 105.045674][ C0] bitmap_port_create+0x3dc/0x7c0 [ 105.050706][ C0] ip_set_create+0x6f1/0x1500 [ 105.055388][ C0] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 105.060327][ C0] netlink_rcv_skb+0x177/0x450 [ 105.065119][ C0] nfnetlink_rcv+0x1ba/0x460 [ 105.069714][ C0] netlink_unicast+0x58c/0x7d0 [ 105.074485][ C0] netlink_sendmsg+0x91c/0xea0 [ 105.079254][ C0] sock_sendmsg+0xd7/0x130 [ 105.083682][ C0] ____sys_sendmsg+0x753/0x880 [ 105.088488][ C0] ___sys_sendmsg+0x100/0x170 [ 105.093183][ C0] __sys_sendmsg+0x105/0x1d0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 105.097777][ C0] __x64_sys_sendmsg+0x78/0xb0 [ 105.102548][ C0] do_syscall_64+0xfa/0x790 [ 105.107062][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 105.112946][ C0] [ 105.115278][ C0] Freed by task 9486: [ 105.119271][ C0] save_stack+0x23/0x90 [ 105.123489][ C0] __kasan_slab_free+0x102/0x150 [ 105.128448][ C0] kasan_slab_free+0xe/0x10 [ 105.132952][ C0] kfree+0x10a/0x2c0 [ 105.136852][ C0] security_cred_free+0xa9/0x110 [ 105.141917][ C0] put_cred_rcu+0x129/0x4b0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 105.146424][ C0] rcu_core+0x570/0x1540 [ 105.150708][ C0] rcu_core_si+0x9/0x10 [ 105.154877][ C0] __do_softirq+0x262/0x98c [ 105.159556][ C0] [ 105.161891][ C0] The buggy address belongs to the object at ffff8880a8a8c040 [ 105.161891][ C0] which belongs to the cache kmalloc-32 of size 32 [ 105.175910][ C0] The buggy address is located 0 bytes inside of [ 105.175910][ C0] 32-byte region [ffff8880a8a8c040, ffff8880a8a8c060) [ 105.188923][ C0] The buggy address belongs to the page: executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 105.194578][ C0] page:ffffea0002a2a300 refcount:1 mapcount:0 mapping:ffff8880aa4001c0 index:0xffff8880a8a8cfc1 [ 105.204999][ C0] raw: 00fffe0000000200 ffffea00024ff7c8 ffffea0002914e48 ffff8880aa4001c0 [ 105.213694][ C0] raw: ffff8880a8a8cfc1 ffff8880a8a8c000 0000000100000034 0000000000000000 [ 105.222324][ C0] page dumped because: kasan: bad access detected [ 105.228762][ C0] [ 105.231089][ C0] Memory state around the buggy address: [ 105.236725][ C0] ffff8880a8a8bf00: fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 105.244823][ C0] ffff8880a8a8bf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 105.252907][ C0] >ffff8880a8a8c000: fb fb fb fb fc fc fc fc 04 fc fc fc fc fc fc fc [ 105.260970][ C0] ^ [ 105.267127][ C0] ffff8880a8a8c080: 00 01 fc fc fc fc fc fc fb fb fb fb fc fc fc fc [ 105.275302][ C0] ffff8880a8a8c100: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc [ 105.283363][ C0] ================================================================== [ 105.291561][ C0] Disabling lock debugging due to kernel taint 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 [ 105.297747][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 105.304332][ C0] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G B 5.5.0-rc6-syzkaller #0 [ 105.313601][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 105.323658][ C0] Call Trace: [ 105.327042][ C0] [ 105.329907][ C0] dump_stack+0x197/0x210 [ 105.334242][ C0] panic+0x2e3/0x75c [ 105.338139][ C0] ? add_taint.cold+0x16/0x16 [ 105.342823][ C0] ? retint_kernel+0x2b/0x2b 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 [ 105.347413][ C0] ? trace_hardirqs_on+0x5e/0x240 [ 105.352433][ C0] ? bitmap_port_gc+0x112/0x4f0 [ 105.357390][ C0] end_report+0x47/0x4f [ 105.361548][ C0] ? bitmap_port_gc+0x112/0x4f0 [ 105.366751][ C0] __kasan_report.cold+0xe/0x41 [ 105.371606][ C0] ? bitmap_port_gc+0x112/0x4f0 [ 105.376465][ C0] kasan_report+0x12/0x20 [ 105.380790][ C0] check_memory_region+0x134/0x1a0 [ 105.385895][ C0] __kasan_check_read+0x11/0x20 [ 105.390745][ C0] bitmap_port_gc+0x112/0x4f0 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 [ 105.395630][ C0] call_timer_fn+0x1ac/0x780 [ 105.400214][ C0] ? bitmap_port_test+0x170/0x170 [ 105.405245][ C0] ? msleep_interruptible+0x150/0x150 [ 105.410611][ C0] ? run_timer_softirq+0x6b1/0x1790 [ 105.415806][ C0] ? trace_hardirqs_on+0x67/0x240 [ 105.420949][ C0] ? bitmap_port_test+0x170/0x170 [ 105.425985][ C0] ? bitmap_port_test+0x170/0x170 [ 105.431247][ C0] run_timer_softirq+0x6c3/0x1790 [ 105.436275][ C0] ? add_timer+0x930/0x930 [ 105.440693][ C0] ? rcu_lockdep_current_cpu_online+0xe3/0x130 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 [ 105.446864][ C0] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 105.452409][ C0] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 105.458485][ C0] ? trace_hardirqs_on+0x67/0x240 [ 105.463717][ C0] __do_softirq+0x262/0x98c [ 105.468223][ C0] ? sched_clock_cpu+0x1b/0x1b0 [ 105.473067][ C0] irq_exit+0x19b/0x1e0 [ 105.477275][ C0] smp_apic_timer_interrupt+0x1a3/0x610 [ 105.483524][ C0] apic_timer_interrupt+0xf/0x20 [ 105.488450][ C0] [ 105.491395][ C0] RIP: 0010:native_safe_halt+0xe/0x10 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 [ 105.496767][ C0] Code: 48 92 de f9 eb 8a cc cc cc cc cc cc e9 07 00 00 00 0f 00 2d 54 54 54 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 44 54 54 00 fb f4 cc 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 4e 60 8e f9 e8 b9 [ 105.516583][ C0] RSP: 0018:ffffffff89807ce8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 [ 105.524999][ C0] RAX: 1ffffffff1326676 RBX: ffffffff8987a140 RCX: 0000000000000000 [ 105.533197][ C0] RDX: dffffc0000000000 RSI: 0000000000000006 RDI: ffffffff8987a9d4 [ 105.541179][ C0] RBP: ffffffff89807d18 R08: ffffffff8987a140 R09: 0000000000000000 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 [ 105.549162][ C0] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 [ 105.557141][ C0] R13: ffffffff8a7b4cc0 R14: 0000000000000000 R15: 0000000000000000 [ 105.565129][ C0] ? default_idle+0x4e/0x360 [ 105.569763][ C0] arch_cpu_idle+0xa/0x10 [ 105.574113][ C0] default_idle_call+0x84/0xb0 [ 105.578881][ C0] do_idle+0x3c8/0x6e0 [ 105.583113][ C0] ? arch_cpu_idle_exit+0x80/0x80 [ 105.588141][ C0] ? trace_hardirqs_on+0x67/0x240 [ 105.593164][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 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 [ 105.599398][ C0] ? debug_smp_processor_id+0x33/0x18a [ 105.604975][ C0] cpu_startup_entry+0x1b/0x20 [ 105.609743][ C0] rest_init+0x23b/0x371 [ 105.613993][ C0] arch_call_rest_init+0xe/0x1b [ 105.619104][ C0] start_kernel+0x904/0x943 [ 105.623612][ C0] ? mem_encrypt_init+0xb/0xb [ 105.628288][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 105.634536][ C0] ? x86_family+0x41/0x50 [ 105.638863][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 105.645104][ C0] x86_64_start_reservations+0x29/0x2b executing program executing program [ 105.650701][ C0] x86_64_start_kernel+0x77/0x7b [ 105.655761][ C0] secondary_startup_64+0xa4/0xb0 [ 105.662138][ C0] Kernel Offset: disabled [ 105.666461][ C0] Rebooting in 86400 seconds..