[ 90.362405][ T27] audit: type=1800 audit(1579358627.727:24): pid=9463 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="sudo" dev="sda1" ino=2454 res=0 [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 90.991267][ T27] audit: type=1800 audit(1579358628.447:25): pid=9463 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 91.021396][ T27] audit: type=1800 audit(1579358628.457:26): pid=9463 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. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.49' (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 syzkaller login: [ 113.352170][ C1] ================================================================== [ 113.360490][ C1] BUG: KASAN: slab-out-of-bounds in bitmap_ip_gc+0x100/0x4f0 [ 113.367858][ C1] Read of size 8 at addr ffff8880987e3280 by task syz-executor158/9973 [ 113.376100][ C1] [ 113.378432][ C1] CPU: 1 PID: 9973 Comm: syz-executor158 Not tainted 5.5.0-rc5-syzkaller #0 [ 113.387114][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 113.397264][ C1] Call Trace: [ 113.400536][ C1] [ 113.403390][ C1] dump_stack+0x197/0x210 [ 113.407759][ C1] ? bitmap_ip_gc+0x100/0x4f0 [ 113.412437][ C1] print_address_description.constprop.0.cold+0xd4/0x30b [ 113.419453][ C1] ? bitmap_ip_gc+0x100/0x4f0 [ 113.424124][ C1] ? bitmap_ip_gc+0x100/0x4f0 [ 113.428796][ C1] __kasan_report.cold+0x1b/0x41 [ 113.433736][ C1] ? bitmap_ip_gc+0x100/0x4f0 [ 113.438411][ C1] kasan_report+0x12/0x20 [ 113.442729][ C1] check_memory_region+0x134/0x1a0 [ 113.447895][ C1] __kasan_check_read+0x11/0x20 [ 113.452738][ C1] bitmap_ip_gc+0x100/0x4f0 [ 113.457244][ C1] call_timer_fn+0x1ac/0x780 [ 113.461949][ C1] ? bitmap_ip_test+0x170/0x170 [ 113.466819][ C1] ? msleep_interruptible+0x150/0x150 [ 113.472273][ C1] ? run_timer_softirq+0x6b1/0x1790 [ 113.477483][ C1] ? trace_hardirqs_on+0x67/0x240 [ 113.482571][ C1] ? bitmap_ip_test+0x170/0x170 [ 113.487414][ C1] ? bitmap_ip_test+0x170/0x170 [ 113.492265][ C1] run_timer_softirq+0x6c3/0x1790 [ 113.497282][ C1] ? add_timer+0x930/0x930 [ 113.501690][ C1] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 113.507834][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 113.513394][ C1] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 113.519490][ C1] ? trace_hardirqs_on+0x67/0x240 [ 113.524534][ C1] __do_softirq+0x262/0x98c [ 113.529090][ C1] ? sched_clock_cpu+0x1b/0x1b0 [ 113.533952][ C1] irq_exit+0x19b/0x1e0 [ 113.538105][ C1] smp_apic_timer_interrupt+0x1a3/0x610 [ 113.543689][ C1] apic_timer_interrupt+0xf/0x20 [ 113.548609][ C1] [ 113.551539][ C1] RIP: 0010:preempt_count_add+0x7a/0x160 [ 113.557293][ C1] Code: b6 c0 3d f4 00 00 00 7f 7f 65 8b 05 a8 73 b1 7e 25 ff ff ff 7f 39 c3 74 05 5b 41 5c 5d c3 48 8b 5d 08 48 89 df e8 36 ba 0a 00 <85> c0 75 39 65 4c 8b 24 25 c0 1e 02 00 49 8d bc 24 58 12 00 00 48 [ 113.577059][ C1] RSP: 0000:ffffc900036b7b50 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 [ 113.585526][ C1] RAX: 0000000000000000 RBX: ffffffff81a1bea3 RCX: 1ffffffff16cec9c [ 113.593500][ C1] RDX: 0000000000000000 RSI: ffffffff81a1be96 RDI: ffffffff81a1bea3 [ 113.602162][ C1] RBP: ffffc900036b7b60 R08: ffff888093e3c440 R09: ffffed1015d2703d [ 113.610139][ C1] R10: ffffed1015d2703c R11: ffff8880ae9381e3 R12: 0000000000004d00 [ 113.618107][ C1] R13: 0000000000000134 R14: 0000000000000000 R15: 0000000000000000 [ 113.626122][ C1] ? clear_subpage+0x23/0x110 [ 113.630865][ C1] ? clear_subpage+0x16/0x110 [ 113.635648][ C1] ? clear_subpage+0x23/0x110 [ 113.640326][ C1] clear_subpage+0x23/0x110 [ 113.644822][ C1] clear_huge_page+0xb5/0x3e0 [ 113.649493][ C1] do_huge_pmd_anonymous_page+0x6a6/0x1a50 [ 113.655292][ C1] ? mark_lock+0xc2/0x1220 [ 113.659778][ C1] ? do_wp_page+0x54b/0x1540 [ 113.664375][ C1] ? prep_transhuge_page+0xa0/0xa0 [ 113.669484][ C1] __handle_mm_fault+0x3145/0x3cc0 [ 113.674705][ C1] ? apply_to_existing_page_range+0x50/0x50 [ 113.680599][ C1] ? handle_mm_fault+0x292/0xa50 [ 113.685592][ C1] ? handle_mm_fault+0x7a0/0xa50 [ 113.690531][ C1] ? __kasan_check_read+0x11/0x20 [ 113.695545][ C1] handle_mm_fault+0x3b2/0xa50 [ 113.700315][ C1] __do_page_fault+0x536/0xd80 [ 113.705083][ C1] do_page_fault+0x38/0x590 [ 113.709668][ C1] page_fault+0x39/0x40 [ 113.713808][ C1] RIP: 0033:0x400713 [ 113.717690][ C1] Code: 03 00 00 00 be 10 00 00 00 bf 29 00 00 00 e8 24 0d 04 00 48 83 f8 ff 74 07 48 89 05 87 a9 2c 00 48 b8 62 69 74 6d 61 70 3a 69 <48> c7 04 25 00 03 00 20 00 00 00 00 c7 04 25 08 03 00 20 00 00 00 [ 113.737703][ C1] RSP: 002b:00007ffee78cceb0 EFLAGS: 00010213 [ 113.743758][ C1] RAX: 693a70616d746962 RBX: 0000000000000000 RCX: 0000000000441439 [ 113.751901][ C1] RDX: 000000000000000c RSI: 0000000000000003 RDI: 0000000000000010 [ 113.759878][ C1] RBP: 000000000001ba88 R08: 0000000000000004 R09: 00000000004002c8 [ 113.767842][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402260 [ 113.776112][ C1] R13: 00000000004022f0 R14: 0000000000000000 R15: 0000000000000000 [ 113.784090][ C1] [ 113.786437][ C1] Allocated by task 9616: [ 113.790826][ C1] save_stack+0x23/0x90 [ 113.794990][ C1] __kasan_kmalloc.constprop.0+0xcf/0xe0 [ 113.800614][ C1] kasan_kmalloc+0x9/0x10 [ 113.804935][ C1] __kmalloc+0x163/0x770 [ 113.809174][ C1] ip_set_alloc+0x38/0x5e [ 113.813501][ C1] bitmap_ip_create+0x6ec/0xc20 [ 113.818351][ C1] ip_set_create+0x6f1/0x1500 [ 113.823149][ C1] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 113.828140][ C1] netlink_rcv_skb+0x177/0x450 [ 113.832910][ C1] nfnetlink_rcv+0x1ba/0x460 [ 113.837578][ C1] netlink_unicast+0x59e/0x7e0 [ 113.842333][ C1] netlink_sendmsg+0x91c/0xea0 [ 113.847100][ C1] sock_sendmsg+0xd7/0x130 [ 113.851561][ C1] ____sys_sendmsg+0x753/0x880 [ 113.856426][ C1] ___sys_sendmsg+0x100/0x170 [ 113.861226][ C1] __sys_sendmsg+0x105/0x1d0 [ 113.865903][ C1] __x64_sys_sendmsg+0x78/0xb0 [ 113.870666][ C1] do_syscall_64+0xfa/0x790 [ 113.875173][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 113.881064][ C1] [ 113.883380][ C1] Freed by task 9337: [ 113.887357][ C1] save_stack+0x23/0x90 [ 113.891514][ C1] __kasan_slab_free+0x102/0x150 [ 113.896454][ C1] kasan_slab_free+0xe/0x10 [ 113.900967][ C1] kfree+0x10a/0x2c0 [ 113.904851][ C1] tomoyo_check_open_permission+0x19e/0x3e0 [ 113.910738][ C1] tomoyo_file_open+0xa9/0xd0 [ 113.915429][ C1] security_file_open+0x71/0x300 [ 113.920366][ C1] do_dentry_open+0x37a/0x1380 [ 113.925113][ C1] vfs_open+0xa0/0xd0 [ 113.929081][ C1] path_openat+0x10df/0x4500 [ 113.933788][ C1] do_filp_open+0x1a1/0x280 [ 113.938317][ C1] do_sys_open+0x3fe/0x5d0 [ 113.942767][ C1] __x64_sys_open+0x7e/0xc0 [ 113.947318][ C1] do_syscall_64+0xfa/0x790 [ 113.951846][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 113.957856][ C1] [ 113.960210][ C1] The buggy address belongs to the object at ffff8880987e3280 [ 113.960210][ C1] which belongs to the cache kmalloc-32 of size 32 [ 113.974089][ C1] The buggy address is located 0 bytes inside of [ 113.974089][ C1] 32-byte region [ffff8880987e3280, ffff8880987e32a0) [ 113.987104][ C1] The buggy address belongs to the page: [ 113.992745][ C1] page:ffffea000261f8c0 refcount:1 mapcount:0 mapping:ffff8880aa4001c0 index:0xffff8880987e3fc1 [ 114.003160][ C1] raw: 00fffe0000000200 ffffea000287c788 ffffea00029a0648 ffff8880aa4001c0 [ 114.011777][ C1] raw: ffff8880987e3fc1 ffff8880987e3000 000000010000003f 0000000000000000 [ 114.020883][ C1] page dumped because: kasan: bad access detected [ 114.027333][ C1] [ 114.029648][ C1] Memory state around the buggy address: [ 114.035613][ C1] ffff8880987e3180: 00 00 00 00 fc fc fc fc 00 00 00 00 fc fc fc fc [ 114.043692][ C1] ffff8880987e3200: 00 03 fc fc fc fc fc fc fb fb fb fb fc fc fc fc [ 114.051742][ C1] >ffff8880987e3280: 04 fc fc fc fc fc fc fc fb fb fb fb fc fc fc fc [ 114.060426][ C1] ^ [ 114.064492][ C1] ffff8880987e3300: 00 03 fc fc fc fc fc fc fb fb fb fb fc fc fc fc [ 114.072547][ C1] ffff8880987e3380: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc [ 114.080598][ C1] ================================================================== [ 114.088649][ C1] Disabling lock debugging due to kernel taint [ 114.094929][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 114.101518][ C1] CPU: 1 PID: 9973 Comm: syz-executor158 Tainted: G B 5.5.0-rc5-syzkaller #0 [ 114.111663][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 114.121776][ C1] Call Trace: [ 114.125160][ C1] [ 114.128018][ C1] dump_stack+0x197/0x210 [ 114.132458][ C1] panic+0x2e3/0x75c [ 114.136447][ C1] ? add_taint.cold+0x16/0x16 [ 114.141112][ C1] ? retint_kernel+0x2b/0x2b [ 114.145714][ C1] ? trace_hardirqs_on+0x5e/0x240 [ 114.150722][ C1] ? bitmap_ip_gc+0x100/0x4f0 [ 114.155401][ C1] end_report+0x47/0x4f [ 114.159547][ C1] ? bitmap_ip_gc+0x100/0x4f0 [ 114.164335][ C1] __kasan_report.cold+0xe/0x41 [ 114.169185][ C1] ? bitmap_ip_gc+0x100/0x4f0 [ 114.173880][ C1] kasan_report+0x12/0x20 [ 114.178203][ C1] check_memory_region+0x134/0x1a0 [ 114.183463][ C1] __kasan_check_read+0x11/0x20 [ 114.188305][ C1] bitmap_ip_gc+0x100/0x4f0 [ 114.192805][ C1] call_timer_fn+0x1ac/0x780 [ 114.197383][ C1] ? bitmap_ip_test+0x170/0x170 [ 114.202763][ C1] ? msleep_interruptible+0x150/0x150 [ 114.208127][ C1] ? run_timer_softirq+0x6b1/0x1790 [ 114.213435][ C1] ? trace_hardirqs_on+0x67/0x240 [ 114.218453][ C1] ? bitmap_ip_test+0x170/0x170 [ 114.223308][ C1] ? bitmap_ip_test+0x170/0x170 [ 114.228160][ C1] run_timer_softirq+0x6c3/0x1790 [ 114.233308][ C1] ? add_timer+0x930/0x930 [ 114.237726][ C1] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 114.243871][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 114.249514][ C1] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 114.255515][ C1] ? trace_hardirqs_on+0x67/0x240 [ 114.261639][ C1] __do_softirq+0x262/0x98c [ 114.266133][ C1] ? sched_clock_cpu+0x1b/0x1b0 [ 114.271248][ C1] irq_exit+0x19b/0x1e0 [ 114.275395][ C1] smp_apic_timer_interrupt+0x1a3/0x610 [ 114.280949][ C1] apic_timer_interrupt+0xf/0x20 [ 114.285883][ C1] [ 114.288941][ C1] RIP: 0010:preempt_count_add+0x7a/0x160 [ 114.294560][ C1] Code: b6 c0 3d f4 00 00 00 7f 7f 65 8b 05 a8 73 b1 7e 25 ff ff ff 7f 39 c3 74 05 5b 41 5c 5d c3 48 8b 5d 08 48 89 df e8 36 ba 0a 00 <85> c0 75 39 65 4c 8b 24 25 c0 1e 02 00 49 8d bc 24 58 12 00 00 48 [ 114.314156][ C1] RSP: 0000:ffffc900036b7b50 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 [ 114.322697][ C1] RAX: 0000000000000000 RBX: ffffffff81a1bea3 RCX: 1ffffffff16cec9c [ 114.330838][ C1] RDX: 0000000000000000 RSI: ffffffff81a1be96 RDI: ffffffff81a1bea3 [ 114.339204][ C1] RBP: ffffc900036b7b60 R08: ffff888093e3c440 R09: ffffed1015d2703d [ 114.347620][ C1] R10: ffffed1015d2703c R11: ffff8880ae9381e3 R12: 0000000000004d00 [ 114.358365][ C1] R13: 0000000000000134 R14: 0000000000000000 R15: 0000000000000000 [ 114.367425][ C1] ? clear_subpage+0x23/0x110 [ 114.372099][ C1] ? clear_subpage+0x16/0x110 [ 114.376778][ C1] ? clear_subpage+0x23/0x110 [ 114.381457][ C1] clear_subpage+0x23/0x110 [ 114.385969][ C1] clear_huge_page+0xb5/0x3e0 [ 114.390687][ C1] do_huge_pmd_anonymous_page+0x6a6/0x1a50 [ 114.396648][ C1] ? mark_lock+0xc2/0x1220 [ 114.401072][ C1] ? do_wp_page+0x54b/0x1540 [ 114.406127][ C1] ? prep_transhuge_page+0xa0/0xa0 [ 114.411289][ C1] __handle_mm_fault+0x3145/0x3cc0 [ 114.416407][ C1] ? apply_to_existing_page_range+0x50/0x50 [ 114.422307][ C1] ? handle_mm_fault+0x292/0xa50 [ 114.427244][ C1] ? handle_mm_fault+0x7a0/0xa50 [ 114.432205][ C1] ? __kasan_check_read+0x11/0x20 [ 114.437220][ C1] handle_mm_fault+0x3b2/0xa50 [ 114.441983][ C1] __do_page_fault+0x536/0xd80 [ 114.446738][ C1] do_page_fault+0x38/0x590 [ 114.451251][ C1] page_fault+0x39/0x40 [ 114.455397][ C1] RIP: 0033:0x400713 [ 114.459889][ C1] Code: 03 00 00 00 be 10 00 00 00 bf 29 00 00 00 e8 24 0d 04 00 48 83 f8 ff 74 07 48 89 05 87 a9 2c 00 48 b8 62 69 74 6d 61 70 3a 69 <48> c7 04 25 00 03 00 20 00 00 00 00 c7 04 25 08 03 00 20 00 00 00 [ 114.479690][ C1] RSP: 002b:00007ffee78cceb0 EFLAGS: 00010213 [ 114.485790][ C1] RAX: 693a70616d746962 RBX: 0000000000000000 RCX: 0000000000441439 [ 114.493753][ C1] RDX: 000000000000000c RSI: 0000000000000003 RDI: 0000000000000010 [ 114.501912][ C1] RBP: 000000000001ba88 R08: 0000000000000004 R09: 00000000004002c8 [ 114.509880][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402260 [ 114.517842][ C1] R13: 00000000004022f0 R14: 0000000000000000 R15: 0000000000000000 [ 114.527316][ C1] Kernel Offset: disabled [ 114.531694][ C1] Rebooting in 86400 seconds..