[ 74.349801][ T27] audit: type=1800 audit(1579556656.731:26): pid=9634 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.
[ 75.247934][ T27] kauditd_printk_skb: 2 callbacks suppressed
[ 75.247946][ T27] audit: type=1800 audit(1579556657.651:29): pid=9634 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
[ 75.274792][ T27] audit: type=1800 audit(1579556657.651:30): pid=9634 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 '10.128.0.103' (ECDSA) to the list of known hosts.
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syzkaller login: [ 83.694980][ C0] ==================================================================
[ 83.703273][ C0] BUG: KASAN: slab-out-of-bounds in bitmap_ipmac_gc+0x119/0x590
[ 83.710902][ C0] Read of size 8 at addr ffff88809cd66500 by task syz-executor290/9786
[ 83.719250][ C0]
[ 83.721575][ C0] CPU: 0 PID: 9786 Comm: syz-executor290 Not tainted 5.5.0-rc6-syzkaller #0
[ 83.730356][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 83.740410][ C0] Call Trace:
[ 83.743707][ C0]
[ 83.746554][ C0] dump_stack+0x197/0x210
[ 83.750878][ C0] ? bitmap_ipmac_gc+0x119/0x590
[ 83.755813][ C0] print_address_description.constprop.0.cold+0xd4/0x30b
[ 83.762867][ C0] ? bitmap_ipmac_gc+0x119/0x590
[ 83.767846][ C0] ? bitmap_ipmac_gc+0x119/0x590
[ 83.772788][ C0] __kasan_report.cold+0x1b/0x41
[ 83.777720][ C0] ? bitmap_ipmac_gc+0x119/0x590
[ 83.782656][ C0] kasan_report+0x12/0x20
[ 83.786973][ C0] check_memory_region+0x134/0x1a0
[ 83.792107][ C0] __kasan_check_read+0x11/0x20
[ 83.796943][ C0] bitmap_ipmac_gc+0x119/0x590
[ 83.801710][ C0] call_timer_fn+0x1ac/0x780
[ 83.806298][ C0] ? bitmap_ipmac_list+0x1080/0x1080
[ 83.811704][ C0] ? msleep_interruptible+0x150/0x150
[ 83.817068][ C0] ? run_timer_softirq+0x6b1/0x1790
[ 83.822290][ C0] ? trace_hardirqs_on+0x67/0x240
[ 83.827305][ C0] ? bitmap_ipmac_list+0x1080/0x1080
[ 83.832592][ C0] ? bitmap_ipmac_list+0x1080/0x1080
[ 83.837890][ C0] run_timer_softirq+0x6c3/0x1790
[ 83.842914][ C0] ? add_timer+0x930/0x930
[ 83.847370][ C0] ? rcu_lockdep_current_cpu_online+0xe3/0x130
[ 83.853521][ C0] ? rcu_read_lock_sched_held+0x9c/0xd0
[ 83.859180][ C0] ? rcu_read_lock_any_held.part.0+0x50/0x50
[ 83.865214][ C0] ? trace_hardirqs_on+0x67/0x240
[ 83.870271][ C0] __do_softirq+0x262/0x98c
[ 83.874789][ C0] ? sched_clock_cpu+0x1b/0x1b0
[ 83.879650][ C0] irq_exit+0x19b/0x1e0
[ 83.883851][ C0] smp_apic_timer_interrupt+0x1a3/0x610
[ 83.889424][ C0] apic_timer_interrupt+0xf/0x20
[ 83.894442][ C0]
[ 83.897368][ C0] RIP: 0010:_raw_spin_unlock_irqrestore+0x90/0xe0
[ 83.903779][ C0] Code: 48 c7 c0 98 33 93 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 39 48 83 3d 6f e7 be 01 00 74 24 48 89 df 57 9d <0f> 1f 44 00 00 bf 01 00 00 00 e8 51 3e 7c f9 65 8b 05 42 d2 2d 78
[ 83.923382][ C0] RSP: 0018:ffffc90007fa7c00 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
[ 83.931962][ C0] RAX: 1ffffffff1326673 RBX: 0000000000000282 RCX: 0000000000000000
[ 83.939949][ C0] RDX: dffffc0000000000 RSI: 0000000000000006 RDI: 0000000000000282
[ 83.947914][ C0] RBP: ffffc90007fa7c10 R08: ffff8880a7e96040 R09: 0000000000000000
[ 83.955994][ C0] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888091452b98
[ 83.963965][ C0] R13: ffffc90007fa7cc0 R14: 0000000000000001 R15: ffff8880914523c0
[ 83.971959][ C0] wake_up_new_task+0x648/0xbd0
[ 83.976844][ C0] ? to_ratio+0x20/0x20
[ 83.981182][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20
[ 83.986927][ C0] _do_fork+0x26c/0x1090
[ 83.991184][ C0] ? copy_init_mm+0x20/0x20
[ 83.995695][ C0] ? __do_sys_wait4+0xbd/0x160
[ 84.000519][ C0] ? kernel_wait4+0x290/0x290
[ 84.005267][ C0] ? _copy_to_user+0x118/0x160
[ 84.010040][ C0] __x64_sys_clone+0x19a/0x260
[ 84.014895][ C0] ? __ia32_sys_vfork+0xd0/0xd0
[ 84.019756][ C0] ? lockdep_hardirqs_on+0x421/0x5e0
[ 84.025583][ C0] ? trace_hardirqs_on+0x67/0x240
[ 84.030718][ C0] do_syscall_64+0xfa/0x790
[ 84.035220][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 84.041329][ C0] RIP: 0033:0x43fdba
[ 84.045301][ C0] Code: f7 d8 64 89 04 25 d4 02 00 00 64 4c 8b 0c 25 10 00 00 00 31 d2 4d 8d 91 d0 02 00 00 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 f5 00 00 00 85 c0 41 89 c5 0f 85 fc 00 00
[ 84.065010][ C0] RSP: 002b:00007ffc4a763850 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
[ 84.073436][ C0] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043fdba
[ 84.081638][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
[ 84.089796][ C0] RBP: 00007ffc4a763870 R08: 0000000000000000 R09: 0000000001c62880
[ 84.098070][ C0] R10: 0000000001c62b50 R11: 0000000000000246 R12: 0000000000000000
[ 84.106309][ C0] R13: 00000000004022b0 R14: 0000000000000000 R15: 0000000000000000
[ 84.114390][ C0]
[ 84.116731][ C0] Allocated by task 9787:
[ 84.121057][ C0] save_stack+0x23/0x90
[ 84.125381][ C0] __kasan_kmalloc.constprop.0+0xcf/0xe0
[ 84.131479][ C0] kasan_kmalloc+0x9/0x10
[ 84.135987][ C0] __kmalloc+0x163/0x770
[ 84.140665][ C0] ip_set_alloc+0x38/0x5e
[ 84.145606][ C0] bitmap_ipmac_create+0x4e8/0xa00
[ 84.151279][ C0] ip_set_create+0x6f1/0x1500
[ 84.156044][ C0] nfnetlink_rcv_msg+0xcf2/0xfb0
[ 84.160987][ C0] netlink_rcv_skb+0x177/0x450
[ 84.165749][ C0] nfnetlink_rcv+0x1ba/0x460
[ 84.170935][ C0] netlink_unicast+0x58c/0x7d0
[ 84.175690][ C0] netlink_sendmsg+0x91c/0xea0
[ 84.180837][ C0] sock_sendmsg+0xd7/0x130
[ 84.185255][ C0] ____sys_sendmsg+0x753/0x880
[ 84.190213][ C0] ___sys_sendmsg+0x100/0x170
[ 84.195163][ C0] __sys_sendmsg+0x105/0x1d0
[ 84.199754][ C0] __x64_sys_sendmsg+0x78/0xb0
[ 84.204521][ C0] do_syscall_64+0xfa/0x790
[ 84.209633][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 84.215545][ C0]
[ 84.217961][ C0] Freed by task 9518:
[ 84.222455][ C0] save_stack+0x23/0x90
[ 84.226610][ C0] __kasan_slab_free+0x102/0x150
[ 84.231543][ C0] kasan_slab_free+0xe/0x10
[ 84.236365][ C0] kfree+0x10a/0x2c0
[ 84.240284][ C0] tomoyo_check_open_permission+0x19e/0x3e0
[ 84.246202][ C0] tomoyo_file_open+0xa9/0xd0
[ 84.250891][ C0] security_file_open+0x71/0x300
[ 84.255907][ C0] do_dentry_open+0x37a/0x1380
[ 84.260664][ C0] vfs_open+0xa0/0xd0
[ 84.264948][ C0] path_openat+0x118b/0x3180
[ 84.269691][ C0] do_filp_open+0x1a1/0x280
[ 84.274472][ C0] do_sys_open+0x3fe/0x5d0
[ 84.278875][ C0] __x64_sys_open+0x7e/0xc0
[ 84.283380][ C0] do_syscall_64+0xfa/0x790
[ 84.287882][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 84.294079][ C0]
[ 84.296521][ C0] The buggy address belongs to the object at ffff88809cd66500
[ 84.296521][ C0] which belongs to the cache kmalloc-32 of size 32
[ 84.310519][ C0] The buggy address is located 0 bytes inside of
[ 84.310519][ C0] 32-byte region [ffff88809cd66500, ffff88809cd66520)
[ 84.323871][ C0] The buggy address belongs to the page:
[ 84.329598][ C0] page:ffffea0002735980 refcount:1 mapcount:0 mapping:ffff8880aa4001c0 index:0xffff88809cd66fc1
[ 84.340272][ C0] raw: 00fffe0000000200 ffffea000279f1c8 ffffea0002630848 ffff8880aa4001c0
[ 84.348923][ C0] raw: ffff88809cd66fc1 ffff88809cd66000 0000000100000035 0000000000000000
[ 84.358063][ C0] page dumped because: kasan: bad access detected
[ 84.364919][ C0]
[ 84.367387][ C0] Memory state around the buggy address:
[ 84.373041][ C0] ffff88809cd66400: 00 00 03 fc fc fc fc fc fb fb fb fb fc fc fc fc
[ 84.381149][ C0] ffff88809cd66480: fb fb fb fb fc fc fc fc 00 03 fc fc fc fc fc fc
[ 84.389387][ C0] >ffff88809cd66500: 04 fc fc fc fc fc fc fc fb fb fb fb fc fc fc fc
[ 84.397491][ C0] ^
[ 84.401547][ C0] ffff88809cd66580: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc
[ 84.409659][ C0] ffff88809cd66600: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc
[ 84.418239][ C0] ==================================================================
[ 84.426487][ C0] Disabling lock debugging due to kernel taint
[ 84.432734][ C0] Kernel panic - not syncing: panic_on_warn set ...
[ 84.439430][ C0] CPU: 0 PID: 9786 Comm: syz-executor290 Tainted: G B 5.5.0-rc6-syzkaller #0
[ 84.451058][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 84.461210][ C0] Call Trace:
[ 84.464490][ C0]
[ 84.468107][ C0] dump_stack+0x197/0x210
[ 84.472455][ C0] panic+0x2e3/0x75c
[ 84.476535][ C0] ? add_taint.cold+0x16/0x16
[ 84.481193][ C0] ? retint_kernel+0x2b/0x2b
[ 84.485781][ C0] ? trace_hardirqs_on+0x5e/0x240
[ 84.490807][ C0] ? bitmap_ipmac_gc+0x119/0x590
[ 84.495728][ C0] end_report+0x47/0x4f
[ 84.499937][ C0] ? bitmap_ipmac_gc+0x119/0x590
[ 84.504862][ C0] __kasan_report.cold+0xe/0x41
[ 84.509694][ C0] ? bitmap_ipmac_gc+0x119/0x590
[ 84.514637][ C0] kasan_report+0x12/0x20
[ 84.518951][ C0] check_memory_region+0x134/0x1a0
[ 84.524073][ C0] __kasan_check_read+0x11/0x20
[ 84.529098][ C0] bitmap_ipmac_gc+0x119/0x590
[ 84.533879][ C0] call_timer_fn+0x1ac/0x780
[ 84.539003][ C0] ? bitmap_ipmac_list+0x1080/0x1080
[ 84.544473][ C0] ? msleep_interruptible+0x150/0x150
[ 84.550046][ C0] ? run_timer_softirq+0x6b1/0x1790
[ 84.555681][ C0] ? trace_hardirqs_on+0x67/0x240
[ 84.560976][ C0] ? bitmap_ipmac_list+0x1080/0x1080
[ 84.566272][ C0] ? bitmap_ipmac_list+0x1080/0x1080
[ 84.571545][ C0] run_timer_softirq+0x6c3/0x1790
[ 84.576564][ C0] ? add_timer+0x930/0x930
[ 84.581047][ C0] ? rcu_lockdep_current_cpu_online+0xe3/0x130
[ 84.587310][ C0] ? rcu_read_lock_sched_held+0x9c/0xd0
[ 84.592881][ C0] ? rcu_read_lock_any_held.part.0+0x50/0x50
[ 84.599197][ C0] ? trace_hardirqs_on+0x67/0x240
[ 84.604352][ C0] __do_softirq+0x262/0x98c
[ 84.609527][ C0] ? sched_clock_cpu+0x1b/0x1b0
[ 84.615218][ C0] irq_exit+0x19b/0x1e0
[ 84.619386][ C0] smp_apic_timer_interrupt+0x1a3/0x610
[ 84.625224][ C0] apic_timer_interrupt+0xf/0x20
[ 84.630440][ C0]
[ 84.633382][ C0] RIP: 0010:_raw_spin_unlock_irqrestore+0x90/0xe0
[ 84.639890][ C0] Code: 48 c7 c0 98 33 93 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 39 48 83 3d 6f e7 be 01 00 74 24 48 89 df 57 9d <0f> 1f 44 00 00 bf 01 00 00 00 e8 51 3e 7c f9 65 8b 05 42 d2 2d 78
[ 84.659751][ C0] RSP: 0018:ffffc90007fa7c00 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
[ 84.668167][ C0] RAX: 1ffffffff1326673 RBX: 0000000000000282 RCX: 0000000000000000
[ 84.676129][ C0] RDX: dffffc0000000000 RSI: 0000000000000006 RDI: 0000000000000282
[ 84.684319][ C0] RBP: ffffc90007fa7c10 R08: ffff8880a7e96040 R09: 0000000000000000
[ 84.692393][ C0] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888091452b98
[ 84.700360][ C0] R13: ffffc90007fa7cc0 R14: 0000000000000001 R15: ffff8880914523c0
[ 84.708677][ C0] wake_up_new_task+0x648/0xbd0
[ 84.713585][ C0] ? to_ratio+0x20/0x20
[ 84.717744][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20
[ 84.723638][ C0] _do_fork+0x26c/0x1090
[ 84.727884][ C0] ? copy_init_mm+0x20/0x20
[ 84.732477][ C0] ? __do_sys_wait4+0xbd/0x160
[ 84.737258][ C0] ? kernel_wait4+0x290/0x290
[ 84.742283][ C0] ? _copy_to_user+0x118/0x160
[ 84.747206][ C0] __x64_sys_clone+0x19a/0x260
[ 84.752006][ C0] ? __ia32_sys_vfork+0xd0/0xd0
[ 84.756854][ C0] ? lockdep_hardirqs_on+0x421/0x5e0
[ 84.762138][ C0] ? trace_hardirqs_on+0x67/0x240
[ 84.767269][ C0] do_syscall_64+0xfa/0x790
[ 84.771773][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 84.779581][ C0] RIP: 0033:0x43fdba
[ 84.783487][ C0] Code: f7 d8 64 89 04 25 d4 02 00 00 64 4c 8b 0c 25 10 00 00 00 31 d2 4d 8d 91 d0 02 00 00 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 f5 00 00 00 85 c0 41 89 c5 0f 85 fc 00 00
[ 84.803307][ C0] RSP: 002b:00007ffc4a763850 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
[ 84.811725][ C0] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043fdba
[ 84.819781][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
[ 84.827750][ C0] RBP: 00007ffc4a763870 R08: 0000000000000000 R09: 0000000001c62880
[ 84.835717][ C0] R10: 0000000001c62b50 R11: 0000000000000246 R12: 0000000000000000
[ 84.843703][ C0] R13: 00000000004022b0 R14: 0000000000000000 R15: 0000000000000000
[ 84.853777][ C0] Kernel Offset: disabled
[ 84.858121][ C0] Rebooting in 86400 seconds..