[ 86.834754][ T27] audit: type=1800 audit(1580376214.367:26): pid=9670 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[1G[[32m ok [39;49m8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[ 88.003369][ T27] kauditd_printk_skb: 2 callbacks suppressed
[ 88.003381][ T27] audit: type=1800 audit(1580376215.557:29): pid=9670 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
[ 88.031017][ T27] audit: type=1800 audit(1580376215.557:30): pid=9670 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 '10.128.0.208' (ECDSA) to the list of known hosts.
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syzkaller login: [ 96.755467][ C1] ==================================================================
[ 96.763775][ C1] BUG: KASAN: slab-out-of-bounds in bitmap_port_gc+0x112/0x4f0
[ 96.771597][ C1] Read of size 8 at addr ffff8880a6988c00 by task swapper/1/0
[ 96.779126][ C1]
[ 96.781446][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.5.0-rc6-next-20200116-syzkaller #0
[ 96.790686][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 96.800740][ C1] Call Trace:
[ 96.804136][ C1]
[ 96.807688][ C1] dump_stack+0x197/0x210
[ 96.812060][ C1] ? bitmap_port_gc+0x112/0x4f0
[ 96.816922][ C1] print_address_description.constprop.0.cold+0xd4/0x30b
[ 96.824040][ C1] ? bitmap_port_gc+0x112/0x4f0
[ 96.828944][ C1] ? bitmap_port_gc+0x112/0x4f0
[ 96.833831][ C1] __kasan_report.cold+0x1b/0x32
[ 96.838770][ C1] ? bitmap_port_gc+0x112/0x4f0
[ 96.843618][ C1] kasan_report+0x12/0x20
[ 96.848019][ C1] check_memory_region+0x134/0x1a0
[ 96.853259][ C1] __kasan_check_read+0x11/0x20
[ 96.858104][ C1] bitmap_port_gc+0x112/0x4f0
[ 96.862794][ C1] call_timer_fn+0x1ac/0x780
[ 96.867464][ C1] ? bitmap_port_test+0x170/0x170
[ 96.872488][ C1] ? msleep_interruptible+0x150/0x150
[ 96.877850][ C1] ? run_timer_softirq+0x6b1/0x1790
[ 96.883051][ C1] ? trace_hardirqs_on+0x67/0x240
[ 96.888069][ C1] ? bitmap_port_test+0x170/0x170
[ 96.893090][ C1] ? bitmap_port_test+0x170/0x170
[ 96.898110][ C1] run_timer_softirq+0x6c3/0x1790
[ 96.903135][ C1] ? add_timer+0x930/0x930
[ 96.907546][ C1] ? rcu_lockdep_current_cpu_online+0xe3/0x130
[ 96.913697][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0
[ 96.919239][ C1] ? rcu_read_lock_any_held.part.0+0x50/0x50
[ 96.925339][ C1] ? trace_hardirqs_on+0x67/0x240
[ 96.930522][ C1] __do_softirq+0x262/0x98c
[ 96.935010][ C1] ? sched_clock_cpu+0x1b/0x1b0
[ 96.939978][ C1] irq_exit+0x19b/0x1e0
[ 96.944172][ C1] smp_apic_timer_interrupt+0x1a3/0x610
[ 96.949754][ C1] apic_timer_interrupt+0xf/0x20
[ 96.954687][ C1]
[ 96.957616][ C1] RIP: 0010:native_safe_halt+0xe/0x10
[ 96.962993][ C1] Code: a8 3a c6 f9 eb 8a cc cc cc cc cc cc e9 07 00 00 00 0f 00 2d 14 92 5a 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 04 92 5a 00 fb f4 cc 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 de 0b 75 f9 e8 89
[ 96.982811][ C1] RSP: 0018:ffffc90000d2fd68 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
[ 96.991217][ C1] RAX: 1ffffffff1367752 RBX: ffff8880a99f8300 RCX: 0000000000000000
[ 96.999193][ C1] RDX: dffffc0000000000 RSI: 0000000000000006 RDI: ffff8880a99f8b9c
[ 97.007158][ C1] RBP: ffffc90000d2fd98 R08: ffff8880a99f8300 R09: 0000000000000000
[ 97.017441][ C1] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
[ 97.025423][ C1] R13: ffffffff8aa52e40 R14: 0000000000000000 R15: 0000000000000001
[ 97.033430][ C1] ? default_idle+0x4e/0x360
[ 97.038014][ C1] arch_cpu_idle+0xa/0x10
[ 97.042396][ C1] default_idle_call+0x84/0xb0
[ 97.047270][ C1] do_idle+0x3c8/0x6e0
[ 97.051351][ C1] ? arch_cpu_idle_exit+0x80/0x80
[ 97.056365][ C1] ? _raw_spin_unlock_irqrestore+0x9f/0xe0
[ 97.062167][ C1] ? complete+0x61/0x80
[ 97.066336][ C1] cpu_startup_entry+0x1b/0x20
[ 97.071100][ C1] start_secondary+0x2f4/0x410
[ 97.075967][ C1] ? set_cpu_sibling_map+0x2140/0x2140
[ 97.081431][ C1] secondary_startup_64+0xa4/0xb0
[ 97.086459][ C1]
[ 97.088822][ C1] Allocated by task 9823:
[ 97.093144][ C1] save_stack+0x23/0x90
[ 97.097293][ C1] __kasan_kmalloc.constprop.0+0xcf/0xe0
[ 97.102924][ C1] kasan_kmalloc+0x9/0x10
[ 97.107370][ C1] __kmalloc+0x163/0x770
[ 97.113510][ C1] ip_set_alloc+0x38/0x5e
[ 97.117860][ C1] bitmap_port_create+0x3dc/0x7c0
[ 97.122882][ C1] ip_set_create+0x6f1/0x1500
[ 97.127555][ C1] nfnetlink_rcv_msg+0xcf2/0xfb0
[ 97.132487][ C1] netlink_rcv_skb+0x177/0x450
[ 97.137244][ C1] nfnetlink_rcv+0x1ba/0x460
[ 97.141827][ C1] netlink_unicast+0x59e/0x7e0
[ 97.146647][ C1] netlink_sendmsg+0x91c/0xea0
[ 97.151403][ C1] sock_sendmsg+0xd7/0x130
[ 97.155843][ C1] ____sys_sendmsg+0x753/0x880
[ 97.160632][ C1] ___sys_sendmsg+0x100/0x170
[ 97.165308][ C1] __sys_sendmsg+0x105/0x1d0
[ 97.169897][ C1] __x64_sys_sendmsg+0x78/0xb0
[ 97.174692][ C1] do_syscall_64+0xfa/0x790
[ 97.179340][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 97.185225][ C1]
[ 97.187543][ C1] Freed by task 9545:
[ 97.191522][ C1] save_stack+0x23/0x90
[ 97.195664][ C1] __kasan_slab_free+0x102/0x150
[ 97.200581][ C1] kasan_slab_free+0xe/0x10
[ 97.205177][ C1] kfree+0x10a/0x2c0
[ 97.209067][ C1] tomoyo_path_perm+0x24e/0x430
[ 97.214091][ C1] tomoyo_inode_getattr+0x1d/0x30
[ 97.219115][ C1] security_inode_getattr+0xf2/0x150
[ 97.224395][ C1] vfs_getattr+0x25/0x70
[ 97.228634][ C1] vfs_statx+0x15d/0x200
[ 97.232880][ C1] __do_sys_newstat+0xa4/0x130
[ 97.237637][ C1] __x64_sys_newstat+0x54/0x80
[ 97.242547][ C1] do_syscall_64+0xfa/0x790
[ 97.247046][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 97.252916][ C1]
[ 97.255274][ C1] The buggy address belongs to the object at ffff8880a6988c00
[ 97.255274][ C1] which belongs to the cache kmalloc-32 of size 32
[ 97.269819][ C1] The buggy address is located 0 bytes inside of
[ 97.269819][ C1] 32-byte region [ffff8880a6988c00, ffff8880a6988c20)
[ 97.282815][ C1] The buggy address belongs to the page:
[ 97.288443][ C1] page:ffffea00029a6200 refcount:1 mapcount:0 mapping:ffff8880aa4001c0 index:0xffff8880a6988fc1
[ 97.298854][ C1] flags: 0xfffe0000000200(slab)
[ 97.303727][ C1] raw: 00fffe0000000200 ffffea000253f548 ffffea00029a5488 ffff8880aa4001c0
[ 97.312336][ C1] raw: ffff8880a6988fc1 ffff8880a6988000 000000010000003e 0000000000000000
[ 97.321016][ C1] page dumped because: kasan: bad access detected
[ 97.327440][ C1]
[ 97.329753][ C1] Memory state around the buggy address:
[ 97.335373][ C1] ffff8880a6988b00: 00 02 fc fc fc fc fc fc fb fb fb fb fc fc fc fc
[ 97.343435][ C1] ffff8880a6988b80: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc
[ 97.351485][ C1] >ffff8880a6988c00: 04 fc fc fc fc fc fc fc fb fb fb fb fc fc fc fc
[ 97.359531][ C1] ^
[ 97.363593][ C1] ffff8880a6988c80: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc
[ 97.371650][ C1] ffff8880a6988d00: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc
[ 97.379828][ C1] ==================================================================
[ 97.387885][ C1] Disabling lock debugging due to kernel taint
[ 97.394097][ C1] Kernel panic - not syncing: panic_on_warn set ...
[ 97.400695][ C1] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G B 5.5.0-rc6-next-20200116-syzkaller #0
[ 97.411185][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 97.421250][ C1] Call Trace:
[ 97.424529][ C1]
[ 97.427387][ C1] dump_stack+0x197/0x210
[ 97.431741][ C1] panic+0x2e3/0x75c
[ 97.435657][ C1] ? add_taint.cold+0x16/0x16
[ 97.440327][ C1] ? retint_kernel+0x2b/0x2b
[ 97.444926][ C1] ? trace_hardirqs_on+0x5e/0x240
[ 97.449955][ C1] ? bitmap_port_gc+0x112/0x4f0
[ 97.454789][ C1] end_report+0x47/0x4f
[ 97.458953][ C1] ? bitmap_port_gc+0x112/0x4f0
[ 97.463804][ C1] __kasan_report.cold+0xe/0x32
[ 97.468653][ C1] ? bitmap_port_gc+0x112/0x4f0
[ 97.473649][ C1] kasan_report+0x12/0x20
[ 97.477966][ C1] check_memory_region+0x134/0x1a0
[ 97.483094][ C1] __kasan_check_read+0x11/0x20
[ 97.487947][ C1] bitmap_port_gc+0x112/0x4f0
[ 97.492616][ C1] call_timer_fn+0x1ac/0x780
[ 97.497234][ C1] ? bitmap_port_test+0x170/0x170
[ 97.502268][ C1] ? msleep_interruptible+0x150/0x150
[ 97.507800][ C1] ? run_timer_softirq+0x6b1/0x1790
[ 97.513002][ C1] ? trace_hardirqs_on+0x67/0x240
[ 97.518014][ C1] ? bitmap_port_test+0x170/0x170
[ 97.523043][ C1] ? bitmap_port_test+0x170/0x170
[ 97.528077][ C1] run_timer_softirq+0x6c3/0x1790
[ 97.533115][ C1] ? add_timer+0x930/0x930
[ 97.537530][ C1] ? rcu_lockdep_current_cpu_online+0xe3/0x130
[ 97.543689][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0
[ 97.549252][ C1] ? rcu_read_lock_any_held.part.0+0x50/0x50
[ 97.555241][ C1] ? trace_hardirqs_on+0x67/0x240
[ 97.560252][ C1] __do_softirq+0x262/0x98c
[ 97.564739][ C1] ? sched_clock_cpu+0x1b/0x1b0
[ 97.569592][ C1] irq_exit+0x19b/0x1e0
[ 97.573749][ C1] smp_apic_timer_interrupt+0x1a3/0x610
[ 97.579293][ C1] apic_timer_interrupt+0xf/0x20
[ 97.584342][ C1]
[ 97.587389][ C1] RIP: 0010:native_safe_halt+0xe/0x10
[ 97.592754][ C1] Code: a8 3a c6 f9 eb 8a cc cc cc cc cc cc e9 07 00 00 00 0f 00 2d 14 92 5a 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 04 92 5a 00 fb f4 cc 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 de 0b 75 f9 e8 89
[ 97.612442][ C1] RSP: 0018:ffffc90000d2fd68 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
[ 97.620857][ C1] RAX: 1ffffffff1367752 RBX: ffff8880a99f8300 RCX: 0000000000000000
[ 97.628922][ C1] RDX: dffffc0000000000 RSI: 0000000000000006 RDI: ffff8880a99f8b9c
[ 97.636886][ C1] RBP: ffffc90000d2fd98 R08: ffff8880a99f8300 R09: 0000000000000000
[ 97.644887][ C1] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
[ 97.653750][ C1] R13: ffffffff8aa52e40 R14: 0000000000000000 R15: 0000000000000001
[ 97.661733][ C1] ? default_idle+0x4e/0x360
[ 97.666324][ C1] arch_cpu_idle+0xa/0x10
[ 97.670650][ C1] default_idle_call+0x84/0xb0
[ 97.675407][ C1] do_idle+0x3c8/0x6e0
[ 97.679482][ C1] ? arch_cpu_idle_exit+0x80/0x80
[ 97.684493][ C1] ? _raw_spin_unlock_irqrestore+0x9f/0xe0
[ 97.690295][ C1] ? complete+0x61/0x80
[ 97.694448][ C1] cpu_startup_entry+0x1b/0x20
[ 97.699201][ C1] start_secondary+0x2f4/0x410
[ 97.703986][ C1] ? set_cpu_sibling_map+0x2140/0x2140
[ 97.709546][ C1] secondary_startup_64+0xa4/0xb0
[ 97.716201][ C1] Kernel Offset: disabled
[ 97.720525][ C1] Rebooting in 86400 seconds..