[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[ 55.755531][ T27] audit: type=1800 audit(1579604510.023:25): pid=8577 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0
[ 55.775107][ T27] audit: type=1800 audit(1579604510.023:26): pid=8577 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0
[ 55.823434][ T27] audit: type=1800 audit(1579604510.023:27): pid=8577 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0
[....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
Debian GNU/Linux 7 syzkaller ttyS0
Warning: Permanently added '10.128.1.22' (ECDSA) to the list of known hosts.
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syzkaller login: [ 72.872403][ C0] ==================================================================
[ 72.880651][ C0] BUG: KASAN: slab-out-of-bounds in bitmap_ipmac_gc+0x173/0x5d0
[ 72.888270][ C0] Read of size 8 at addr ffff8880a387ee80 by task syz-executor400/8733
[ 72.896654][ C0]
[ 72.898965][ C0] CPU: 0 PID: 8733 Comm: syz-executor400 Not tainted 5.5.0-rc7-syzkaller #0
[ 72.907694][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 72.917834][ C0] Call Trace:
[ 72.921104][ C0]
[ 72.923939][ C0] dump_stack+0x1fb/0x318
[ 72.928264][ C0] print_address_description+0x74/0x5c0
[ 72.933806][ C0] ? vprintk_default+0x28/0x30
[ 72.938548][ C0] ? vprintk_func+0x158/0x170
[ 72.943199][ C0] ? printk+0x62/0x8d
[ 72.947167][ C0] __kasan_report+0x149/0x1c0
[ 72.951819][ C0] ? bitmap_ipmac_gc+0x173/0x5d0
[ 72.956739][ C0] kasan_report+0x26/0x50
[ 72.961058][ C0] check_memory_region+0x2b6/0x2f0
[ 72.966143][ C0] __kasan_check_read+0x11/0x20
[ 72.970983][ C0] bitmap_ipmac_gc+0x173/0x5d0
[ 72.975746][ C0] ? bitmap_ipmac_create+0x840/0x840
[ 72.981156][ C0] call_timer_fn+0x95/0x170
[ 72.985644][ C0] ? bitmap_ipmac_create+0x840/0x840
[ 72.990928][ C0] __run_timers+0x776/0x970
[ 72.995421][ C0] ? check_preemption_disabled+0x44/0x260
[ 73.001340][ C0] ? debug_smp_processor_id+0x9/0x20
[ 73.006609][ C0] run_timer_softirq+0x4a/0x90
[ 73.011353][ C0] __do_softirq+0x283/0x7bd
[ 73.015858][ C0] ? irq_exit+0x227/0x230
[ 73.020185][ C0] irq_exit+0x227/0x230
[ 73.024325][ C0] smp_apic_timer_interrupt+0x113/0x280
[ 73.029861][ C0] apic_timer_interrupt+0xf/0x20
[ 73.034781][ C0]
[ 73.037707][ C0] RIP: 0010:copy_page+0x7/0x10
[ 73.042457][ C0] Code: 5f 5d c3 89 d1 80 e1 07 38 c1 7c dc 48 8b 7d c8 e8 7e 0e b9 f9 48 8b 55 c8 eb cd cc cc cc cc cc cc cc cc 66 90 b9 00 02 00 00 48 a5 c3 0f 1f 44 00 00 48 83 ec 10 48 89 1c 24 4c 89 64 24 08
[ 73.062048][ C0] RSP: 0000:ffffc900020f7b60 EFLAGS: 00010286 ORIG_RAX: ffffffffffffff13
[ 73.070781][ C0] RAX: 0005088000000000 RBX: ffff88808bdab000 RCX: 00000000000001f8
[ 73.080204][ C0] RDX: 0000000000000000 RSI: ffff88808bdab040 RDI: ffff888096de5040
[ 73.088160][ C0] RBP: ffffc900020f7c40 R08: ffffffff81b01852 R09: ffffed1015d86fc5
[ 73.096113][ C0] R10: ffffed1015d86fc5 R11: 0000000000000000 R12: 1ffff11012585b3d
[ 73.104076][ C0] R13: ffff888092c2d9e8 R14: ffffea00025b7940 R15: dffffc0000000000
[ 73.112058][ C0] ? alloc_pages_vma+0x522/0xd40
[ 73.116982][ C0] ? wp_page_copy+0x2be/0x1c50
[ 73.121792][ C0] do_wp_page+0x5e4/0x16d0
[ 73.126337][ C0] ? __kasan_check_write+0x14/0x20
[ 73.131481][ C0] ? do_raw_spin_lock+0x103/0x7b0
[ 73.136539][ C0] ? handle_mm_fault+0x235a/0x2900
[ 73.141633][ C0] handle_mm_fault+0x241f/0x2900
[ 73.146704][ C0] do_user_addr_fault+0x588/0xaf0
[ 73.151724][ C0] __do_page_fault+0xd3/0x1f0
[ 73.156391][ C0] do_page_fault+0x99/0xb0
[ 73.160785][ C0] page_fault+0x39/0x40
[ 73.165058][ C0] RIP: 0033:0x43fede
[ 73.168940][ C0] Code: 5c 41 5d 41 5e 5d c3 48 c7 c2 d0 ff ff ff f7 d8 41 bd ff ff ff ff 64 89 02 64 8b 04 25 d0 02 00 00 41 39 c4 0f 85 2f 01 00 00 <64> 44 89 04 25 d4 02 00 00 45 85 f6 0f 85 7f 00 00 00 48 85 db 74
[ 73.188593][ C0] RSP: 002b:00007ffd794f56c0 EFLAGS: 00010246
[ 73.194701][ C0] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000000043fdba
[ 73.202747][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
[ 73.210723][ C0] RBP: 00007ffd794f56e0 R08: 0000000000000000 R09: 0000000002303880
[ 73.218816][ C0] R10: 0000000002303b50 R11: 0000000000000246 R12: 0000000000000000
[ 73.226834][ C0] R13: 0000000000002395 R14: 0000000000000000 R15: 0000000000000000
[ 73.234802][ C0]
[ 73.237121][ C0] Allocated by task 8734:
[ 73.241449][ C0] __kasan_kmalloc+0x118/0x1c0
[ 73.246191][ C0] kasan_kmalloc+0x9/0x10
[ 73.250518][ C0] __kmalloc+0x254/0x340
[ 73.254800][ C0] kzalloc+0x21/0x40
[ 73.258715][ C0] ip_set_alloc+0x32/0x60
[ 73.263021][ C0] bitmap_ipmac_create+0x3d9/0x840
[ 73.268120][ C0] ip_set_create+0x421/0xfd0
[ 73.272694][ C0] nfnetlink_rcv_msg+0x9ae/0xcd0
[ 73.277622][ C0] netlink_rcv_skb+0x19e/0x3e0
[ 73.282380][ C0] nfnetlink_rcv+0x1e0/0x1e50
[ 73.287043][ C0] netlink_unicast+0x767/0x920
[ 73.291837][ C0] netlink_sendmsg+0xa2c/0xd50
[ 73.296589][ C0] ____sys_sendmsg+0x4f7/0x7f0
[ 73.301342][ C0] __sys_sendmsg+0x1ed/0x290
[ 73.305918][ C0] __x64_sys_sendmsg+0x7f/0x90
[ 73.310667][ C0] do_syscall_64+0xf7/0x1c0
[ 73.315257][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 73.321129][ C0]
[ 73.323461][ C0] Freed by task 8437:
[ 73.327430][ C0] __kasan_slab_free+0x12e/0x1e0
[ 73.332341][ C0] kasan_slab_free+0xe/0x10
[ 73.336822][ C0] kfree+0x10d/0x220
[ 73.340709][ C0] tomoyo_path_perm+0x6ae/0x850
[ 73.345590][ C0] tomoyo_inode_getattr+0x1c/0x20
[ 73.350632][ C0] security_inode_getattr+0xc0/0x140
[ 73.355926][ C0] vfs_getattr+0x2a/0x6d0
[ 73.360243][ C0] __se_sys_newstat+0x95/0x150
[ 73.365086][ C0] __x64_sys_newstat+0x5b/0x70
[ 73.369852][ C0] do_syscall_64+0xf7/0x1c0
[ 73.374492][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 73.380355][ C0]
[ 73.382662][ C0] The buggy address belongs to the object at ffff8880a387ee80
[ 73.382662][ C0] which belongs to the cache kmalloc-32 of size 32
[ 73.397923][ C0] The buggy address is located 0 bytes inside of
[ 73.397923][ C0] 32-byte region [ffff8880a387ee80, ffff8880a387eea0)
[ 73.410924][ C0] The buggy address belongs to the page:
executing program
[ 73.416623][ C0] page:ffffea00028e1f80 refcount:1 mapcount:0 mapping:ffff8880aa8001c0 index:0xffff8880a387efc1
[ 73.427014][ C0] raw: 00fffe0000000200 ffffea00027661c8 ffffea0002777948 ffff8880aa8001c0
[ 73.435683][ C0] raw: ffff8880a387efc1 ffff8880a387e000 000000010000003f 0000000000000000
[ 73.444250][ C0] page dumped because: kasan: bad access detected
[ 73.450642][ C0]
[ 73.453001][ C0] Memory state around the buggy address:
[ 73.458609][ C0] ffff8880a387ed80: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc
[ 73.466662][ C0] ffff8880a387ee00: 00 00 01 fc fc fc fc fc fb fb fb fb fc fc fc fc
[ 73.474777][ C0] >ffff8880a387ee80: 04 fc fc fc fc fc fc fc fb fb fb fb fc fc fc fc
[ 73.482818][ C0] ^
[ 73.486869][ C0] ffff8880a387ef00: 06 fc fc fc fc fc fc fc 00 00 01 fc fc fc fc fc
[ 73.494916][ C0] ffff8880a387ef80: 00 00 01 fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 73.502958][ C0] ==================================================================
[ 73.511086][ C0] Disabling lock debugging due to kernel taint
[ 73.517291][ C0] Kernel panic - not syncing: panic_on_warn set ...
[ 73.523872][ C0] CPU: 0 PID: 8733 Comm: syz-executor400 Tainted: G B 5.5.0-rc7-syzkaller #0
[ 73.533902][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 73.543992][ C0] Call Trace:
[ 73.547259][ C0]
[ 73.550092][ C0] dump_stack+0x1fb/0x318
[ 73.554522][ C0] panic+0x264/0x7a9
[ 73.558520][ C0] ? __kasan_report+0x193/0x1c0
[ 73.563399][ C0] ? trace_hardirqs_on+0x34/0x80
[ 73.568367][ C0] ? _raw_spin_unlock_irqrestore+0xa8/0xe0
[ 73.574210][ C0] __kasan_report+0x1b9/0x1c0
[ 73.578862][ C0] ? bitmap_ipmac_gc+0x173/0x5d0
[ 73.583771][ C0] kasan_report+0x26/0x50
[ 73.588083][ C0] check_memory_region+0x2b6/0x2f0
[ 73.593171][ C0] __kasan_check_read+0x11/0x20
[ 73.598008][ C0] bitmap_ipmac_gc+0x173/0x5d0
[ 73.602758][ C0] ? bitmap_ipmac_create+0x840/0x840
[ 73.608138][ C0] call_timer_fn+0x95/0x170
[ 73.612674][ C0] ? bitmap_ipmac_create+0x840/0x840
[ 73.617954][ C0] __run_timers+0x776/0x970
[ 73.622448][ C0] ? check_preemption_disabled+0x44/0x260
[ 73.628150][ C0] ? debug_smp_processor_id+0x9/0x20
[ 73.633427][ C0] run_timer_softirq+0x4a/0x90
[ 73.638174][ C0] __do_softirq+0x283/0x7bd
[ 73.642653][ C0] ? irq_exit+0x227/0x230
[ 73.647002][ C0] irq_exit+0x227/0x230
[ 73.651146][ C0] smp_apic_timer_interrupt+0x113/0x280
[ 73.656692][ C0] apic_timer_interrupt+0xf/0x20
[ 73.661606][ C0]
[ 73.664529][ C0] RIP: 0010:copy_page+0x7/0x10
[ 73.669268][ C0] Code: 5f 5d c3 89 d1 80 e1 07 38 c1 7c dc 48 8b 7d c8 e8 7e 0e b9 f9 48 8b 55 c8 eb cd cc cc cc cc cc cc cc cc 66 90 b9 00 02 00 00 48 a5 c3 0f 1f 44 00 00 48 83 ec 10 48 89 1c 24 4c 89 64 24 08
[ 73.688860][ C0] RSP: 0000:ffffc900020f7b60 EFLAGS: 00010286 ORIG_RAX: ffffffffffffff13
[ 73.697265][ C0] RAX: 0005088000000000 RBX: ffff88808bdab000 RCX: 00000000000001f8
[ 73.705221][ C0] RDX: 0000000000000000 RSI: ffff88808bdab040 RDI: ffff888096de5040
[ 73.713176][ C0] RBP: ffffc900020f7c40 R08: ffffffff81b01852 R09: ffffed1015d86fc5
[ 73.721133][ C0] R10: ffffed1015d86fc5 R11: 0000000000000000 R12: 1ffff11012585b3d
[ 73.729221][ C0] R13: ffff888092c2d9e8 R14: ffffea00025b7940 R15: dffffc0000000000
[ 73.737190][ C0] ? alloc_pages_vma+0x522/0xd40
[ 73.742106][ C0] ? wp_page_copy+0x2be/0x1c50
[ 73.748314][ C0] do_wp_page+0x5e4/0x16d0
[ 73.752768][ C0] ? __kasan_check_write+0x14/0x20
[ 73.757864][ C0] ? do_raw_spin_lock+0x103/0x7b0
[ 73.762869][ C0] ? handle_mm_fault+0x235a/0x2900
[ 73.768026][ C0] handle_mm_fault+0x241f/0x2900
[ 73.772955][ C0] do_user_addr_fault+0x588/0xaf0
[ 73.777967][ C0] __do_page_fault+0xd3/0x1f0
[ 73.782622][ C0] do_page_fault+0x99/0xb0
[ 73.787017][ C0] page_fault+0x39/0x40
[ 73.791277][ C0] RIP: 0033:0x43fede
[ 73.795152][ C0] Code: 5c 41 5d 41 5e 5d c3 48 c7 c2 d0 ff ff ff f7 d8 41 bd ff ff ff ff 64 89 02 64 8b 04 25 d0 02 00 00 41 39 c4 0f 85 2f 01 00 00 <64> 44 89 04 25 d4 02 00 00 45 85 f6 0f 85 7f 00 00 00 48 85 db 74
[ 73.814739][ C0] RSP: 002b:00007ffd794f56c0 EFLAGS: 00010246
[ 73.820930][ C0] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000000043fdba
[ 73.828952][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
[ 73.836911][ C0] RBP: 00007ffd794f56e0 R08: 0000000000000000 R09: 0000000002303880
[ 73.845031][ C0] R10: 0000000002303b50 R11: 0000000000000246 R12: 0000000000000000
[ 73.853069][ C0] R13: 0000000000002395 R14: 0000000000000000 R15: 0000000000000000
[ 73.862632][ C0] Kernel Offset: disabled
[ 73.866960][ C0] Rebooting in 86400 seconds..