[ 101.127632][ T26] audit: type=1800 audit(1579717314.249:34): pid=11056 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 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 mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 104.669594][ T26] kauditd_printk_skb: 6 callbacks suppressed [ 104.669611][ T26] audit: type=1400 audit(1579717317.829:41): avc: denied { map } for pid=11234 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 '10.128.0.174' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program [ 111.588000][ T26] audit: type=1400 audit(1579717324.749:42): avc: denied { map } for pid=11246 comm="syz-executor315" path="/root/syz-executor315705980" 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 111.616586][ T26] audit: type=1400 audit(1579717324.749:43): avc: denied { create } for pid=11247 comm="syz-executor315" 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 [ 111.643302][ T26] audit: type=1400 audit(1579717324.749:44): avc: denied { write } for pid=11247 comm="syz-executor315" 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 113.657607][ C1] ================================================================== [ 113.666292][ C1] BUG: KASAN: slab-out-of-bounds in bitmap_ipmac_gc+0x119/0x590 [ 113.674006][ C1] Read of size 8 at addr ffff8880949d46c0 by task swapper/1/0 [ 113.681568][ C1] [ 113.684161][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.5.0-rc7-syzkaller #0 [ 113.692170][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 113.702405][ C1] Call Trace: [ 113.705702][ C1] [ 113.708611][ C1] dump_stack+0x197/0x210 [ 113.713047][ C1] ? bitmap_ipmac_gc+0x119/0x590 [ 113.718112][ C1] print_address_description.constprop.0.cold+0xd4/0x30b [ 113.725134][ C1] ? bitmap_ipmac_gc+0x119/0x590 [ 113.730409][ C1] ? bitmap_ipmac_gc+0x119/0x590 [ 113.735712][ C1] __kasan_report.cold+0x1b/0x41 [ 113.740841][ C1] ? bitmap_ipmac_gc+0x119/0x590 [ 113.745778][ C1] kasan_report+0x12/0x20 [ 113.750222][ C1] check_memory_region+0x134/0x1a0 [ 113.755738][ C1] __kasan_check_read+0x11/0x20 [ 113.760886][ C1] bitmap_ipmac_gc+0x119/0x590 [ 113.765979][ C1] call_timer_fn+0x1ac/0x780 [ 113.770586][ C1] ? bitmap_ipmac_list+0x1080/0x1080 [ 113.775940][ C1] ? msleep_interruptible+0x150/0x150 [ 113.781322][ C1] ? run_timer_softirq+0x6b1/0x1790 [ 113.786533][ C1] ? trace_hardirqs_on+0x67/0x240 [ 113.791565][ C1] ? bitmap_ipmac_list+0x1080/0x1080 [ 113.797032][ C1] ? bitmap_ipmac_list+0x1080/0x1080 [ 113.803314][ C1] run_timer_softirq+0x6c3/0x1790 [ 113.808429][ C1] ? add_timer+0x930/0x930 [ 113.812979][ C1] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 113.819256][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 113.825114][ C1] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 113.831217][ C1] ? trace_hardirqs_on+0x67/0x240 [ 113.836417][ C1] __do_softirq+0x262/0x98c [ 113.840926][ C1] ? sched_clock_cpu+0x1b/0x1b0 [ 113.845905][ C1] irq_exit+0x19b/0x1e0 [ 113.850075][ C1] smp_apic_timer_interrupt+0x1a3/0x610 [ 113.855744][ C1] apic_timer_interrupt+0xf/0x20 [ 113.860924][ C1] [ 113.863877][ C1] RIP: 0010:native_safe_halt+0xe/0x10 [ 113.869285][ C1] Code: b8 80 de f9 eb 8a cc cc cc cc cc cc e9 07 00 00 00 0f 00 2d c4 41 54 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d b4 41 54 00 fb f4 cc 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 be 4d 8e f9 e8 49 [ 113.889208][ C1] RSP: 0018:ffffc90000d3fd68 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 [ 113.897800][ C1] RAX: 1ffffffff1326676 RBX: ffff8880a9a0a340 RCX: 0000000000000000 [ 113.905770][ C1] RDX: dffffc0000000000 RSI: 0000000000000006 RDI: ffff8880a9a0abd4 [ 113.914116][ C1] RBP: ffffc90000d3fd98 R08: ffff8880a9a0a340 R09: 0000000000000000 [ 113.923706][ C1] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 [ 113.932593][ C1] R13: ffffffff8a7b4e80 R14: 0000000000000000 R15: 0000000000000001 [ 113.941062][ C1] ? default_idle+0x4e/0x360 [ 113.945752][ C1] arch_cpu_idle+0xa/0x10 [ 113.950216][ C1] default_idle_call+0x84/0xb0 [ 113.955089][ C1] do_idle+0x3c8/0x6e0 [ 113.959264][ C1] ? arch_cpu_idle_exit+0x80/0x80 [ 113.964330][ C1] cpu_startup_entry+0x1b/0x20 [ 113.969286][ C1] start_secondary+0x2f4/0x410 [ 113.974088][ C1] ? set_cpu_sibling_map+0x2140/0x2140 [ 113.979592][ C1] secondary_startup_64+0xa4/0xb0 [ 113.984832][ C1] [ 113.987172][ C1] Allocated by task 11247: [ 113.991861][ C1] save_stack+0x23/0x90 [ 113.996023][ C1] __kasan_kmalloc.constprop.0+0xcf/0xe0 [ 114.002067][ C1] kasan_kmalloc+0x9/0x10 [ 114.006402][ C1] __kmalloc+0x163/0x770 [ 114.010947][ C1] ip_set_alloc+0x38/0x5e [ 114.015422][ C1] bitmap_ipmac_create+0x4e8/0xa00 [ 114.020642][ C1] ip_set_create+0x6f1/0x1500 [ 114.025475][ C1] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 114.030616][ C1] netlink_rcv_skb+0x177/0x450 [ 114.035558][ C1] nfnetlink_rcv+0x1ba/0x460 [ 114.040351][ C1] netlink_unicast+0x58c/0x7d0 [ 114.045127][ C1] netlink_sendmsg+0x91c/0xea0 [ 114.050042][ C1] sock_sendmsg+0xd7/0x130 [ 114.054582][ C1] ____sys_sendmsg+0x753/0x880 [ 114.059566][ C1] ___sys_sendmsg+0x100/0x170 [ 114.064253][ C1] __sys_sendmsg+0x105/0x1d0 [ 114.069486][ C1] __x64_sys_sendmsg+0x78/0xb0 [ 114.074289][ C1] do_syscall_64+0xfa/0x790 [ 114.078967][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 114.084864][ C1] [ 114.087190][ C1] Freed by task 11018: [ 114.091283][ C1] save_stack+0x23/0x90 [ 114.095601][ C1] __kasan_slab_free+0x102/0x150 [ 114.100795][ C1] kasan_slab_free+0xe/0x10 [ 114.105308][ C1] kfree+0x10a/0x2c0 [ 114.109541][ C1] tomoyo_init_log+0x15a9/0x2070 [ 114.114607][ C1] tomoyo_supervisor+0x33f/0xef0 [ 114.119739][ C1] tomoyo_env_perm+0x18e/0x210 [ 114.124524][ C1] tomoyo_find_next_domain+0x1354/0x1f6c [ 114.130175][ C1] tomoyo_bprm_check_security+0x124/0x1a0 [ 114.135901][ C1] security_bprm_check+0x63/0xb0 [ 114.140985][ C1] search_binary_handler+0x71/0x570 [ 114.146454][ C1] __do_execve_file.isra.0+0x1329/0x22b0 [ 114.152235][ C1] __x64_sys_execve+0x8f/0xc0 [ 114.156921][ C1] do_syscall_64+0xfa/0x790 [ 114.161436][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 114.167676][ C1] [ 114.170000][ C1] The buggy address belongs to the object at ffff8880949d46c0 [ 114.170000][ C1] which belongs to the cache kmalloc-32 of size 32 [ 114.184709][ C1] The buggy address is located 0 bytes inside of [ 114.184709][ C1] 32-byte region [ffff8880949d46c0, ffff8880949d46e0) [ 114.197794][ C1] The buggy address belongs to the page: [ 114.203617][ C1] page:ffffea0002527500 refcount:1 mapcount:0 mapping:ffff8880aa4001c0 index:0xffff8880949d4fc1 [ 114.214270][ C1] raw: 00fffe0000000200 ffffea0002968f88 ffffea0002a05988 ffff8880aa4001c0 [ 114.223057][ C1] raw: ffff8880949d4fc1 ffff8880949d4000 0000000100000039 0000000000000000 [ 114.232014][ C1] page dumped because: kasan: bad access detected [ 114.238863][ C1] [ 114.241180][ C1] Memory state around the buggy address: [ 114.246805][ C1] ffff8880949d4580: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc [ 114.254870][ C1] ffff8880949d4600: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc [ 114.262957][ C1] >ffff8880949d4680: fb fb fb fb fc fc fc fc 04 fc fc fc fc fc fc fc [ 114.271030][ C1] ^ [ 114.277177][ C1] ffff8880949d4700: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc [ 114.285401][ C1] ffff8880949d4780: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc [ 114.293456][ C1] ================================================================== [ 114.301806][ C1] Disabling lock debugging due to kernel taint [ 114.308074][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 114.314813][ C1] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G B 5.5.0-rc7-syzkaller #0 [ 114.324351][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 114.334723][ C1] Call Trace: [ 114.338006][ C1] [ 114.341053][ C1] dump_stack+0x197/0x210 [ 114.345621][ C1] panic+0x2e3/0x75c [ 114.349556][ C1] ? add_taint.cold+0x16/0x16 [ 114.354364][ C1] ? retint_kernel+0x2b/0x2b [ 114.359113][ C1] ? trace_hardirqs_on+0x5e/0x240 [ 114.364146][ C1] ? bitmap_ipmac_gc+0x119/0x590 [ 114.369721][ C1] end_report+0x47/0x4f [ 114.374024][ C1] ? bitmap_ipmac_gc+0x119/0x590 [ 114.378969][ C1] __kasan_report.cold+0xe/0x41 [ 114.383939][ C1] ? bitmap_ipmac_gc+0x119/0x590 [ 114.388875][ C1] kasan_report+0x12/0x20 [ 114.393203][ C1] check_memory_region+0x134/0x1a0 [ 114.398305][ C1] __kasan_check_read+0x11/0x20 [ 114.403245][ C1] bitmap_ipmac_gc+0x119/0x590 [ 114.408091][ C1] call_timer_fn+0x1ac/0x780 [ 114.412805][ C1] ? bitmap_ipmac_list+0x1080/0x1080 [ 114.418242][ C1] ? msleep_interruptible+0x150/0x150 [ 114.423807][ C1] ? run_timer_softirq+0x6b1/0x1790 [ 114.429016][ C1] ? trace_hardirqs_on+0x67/0x240 [ 114.434083][ C1] ? bitmap_ipmac_list+0x1080/0x1080 [ 114.439675][ C1] ? bitmap_ipmac_list+0x1080/0x1080 [ 114.445110][ C1] run_timer_softirq+0x6c3/0x1790 [ 114.450140][ C1] ? add_timer+0x930/0x930 [ 114.454638][ C1] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 114.460918][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 114.466464][ C1] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 114.472676][ C1] ? trace_hardirqs_on+0x67/0x240 [ 114.477694][ C1] __do_softirq+0x262/0x98c [ 114.482202][ C1] ? sched_clock_cpu+0x1b/0x1b0 [ 114.487141][ C1] irq_exit+0x19b/0x1e0 [ 114.491316][ C1] smp_apic_timer_interrupt+0x1a3/0x610 [ 114.497324][ C1] apic_timer_interrupt+0xf/0x20 [ 114.502260][ C1] [ 114.505203][ C1] RIP: 0010:native_safe_halt+0xe/0x10 [ 114.510687][ C1] Code: b8 80 de f9 eb 8a cc cc cc cc cc cc e9 07 00 00 00 0f 00 2d c4 41 54 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d b4 41 54 00 fb f4 cc 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 be 4d 8e f9 e8 49 [ 114.530497][ C1] RSP: 0018:ffffc90000d3fd68 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 [ 114.539067][ C1] RAX: 1ffffffff1326676 RBX: ffff8880a9a0a340 RCX: 0000000000000000 [ 114.547224][ C1] RDX: dffffc0000000000 RSI: 0000000000000006 RDI: ffff8880a9a0abd4 [ 114.555194][ C1] RBP: ffffc90000d3fd98 R08: ffff8880a9a0a340 R09: 0000000000000000 [ 114.563452][ C1] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 [ 114.571421][ C1] R13: ffffffff8a7b4e80 R14: 0000000000000000 R15: 0000000000000001 [ 114.579509][ C1] ? default_idle+0x4e/0x360 [ 114.584394][ C1] arch_cpu_idle+0xa/0x10 [ 114.588961][ C1] default_idle_call+0x84/0xb0 [ 114.593722][ C1] do_idle+0x3c8/0x6e0 [ 114.597890][ C1] ? arch_cpu_idle_exit+0x80/0x80 [ 114.602940][ C1] cpu_startup_entry+0x1b/0x20 [ 114.607694][ C1] start_secondary+0x2f4/0x410 [ 114.612568][ C1] ? set_cpu_sibling_map+0x2140/0x2140 [ 114.618057][ C1] secondary_startup_64+0xa4/0xb0 [ 114.624924][ C1] Kernel Offset: disabled [ 114.629269][ C1] Rebooting in 86400 seconds..