[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 95.597532][ T28] audit: type=1800 audit(1579423799.543:25): pid=9496 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 95.617245][ T28] audit: type=1800 audit(1579423799.543:26): pid=9496 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 95.651768][ T28] audit: type=1800 audit(1579423799.543:27): pid=9496 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 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 '10.128.10.1' (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 syzkaller login: [ 106.291921][ C0] ================================================================== [ 106.300382][ C0] BUG: KASAN: slab-out-of-bounds in bitmap_port_gc+0x112/0x4f0 [ 106.307919][ C0] Read of size 8 at addr ffff88809fef6e40 by task syz-executor006/10003 [ 106.316230][ C0] [ 106.318550][ C0] CPU: 0 PID: 10003 Comm: syz-executor006 Not tainted 5.5.0-rc6-syzkaller #0 [ 106.327306][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 106.337407][ C0] Call Trace: [ 106.340684][ C0] [ 106.343527][ C0] dump_stack+0x197/0x210 [ 106.347970][ C0] ? bitmap_port_gc+0x112/0x4f0 [ 106.352936][ C0] print_address_description.constprop.0.cold+0xd4/0x30b [ 106.360047][ C0] ? bitmap_port_gc+0x112/0x4f0 [ 106.365003][ C0] ? bitmap_port_gc+0x112/0x4f0 [ 106.369857][ C0] __kasan_report.cold+0x1b/0x41 [ 106.374796][ C0] ? bitmap_port_gc+0x112/0x4f0 [ 106.379649][ C0] kasan_report+0x12/0x20 [ 106.383981][ C0] check_memory_region+0x134/0x1a0 [ 106.389161][ C0] __kasan_check_read+0x11/0x20 [ 106.394006][ C0] bitmap_port_gc+0x112/0x4f0 [ 106.398689][ C0] call_timer_fn+0x1ac/0x780 [ 106.403509][ C0] ? bitmap_port_test+0x170/0x170 [ 106.408524][ C0] ? msleep_interruptible+0x150/0x150 [ 106.413898][ C0] ? run_timer_softirq+0x6b1/0x1790 [ 106.419096][ C0] ? trace_hardirqs_on+0x67/0x240 [ 106.424307][ C0] ? bitmap_port_test+0x170/0x170 [ 106.429328][ C0] ? bitmap_port_test+0x170/0x170 [ 106.434354][ C0] run_timer_softirq+0x6c3/0x1790 [ 106.439551][ C0] ? add_timer+0x930/0x930 [ 106.444226][ C0] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 106.450394][ C0] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 106.456003][ C0] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 106.462310][ C0] ? trace_hardirqs_on+0x67/0x240 [ 106.467373][ C0] __do_softirq+0x262/0x98c [ 106.471892][ C0] ? sched_clock_cpu+0x1b/0x1b0 [ 106.476866][ C0] irq_exit+0x19b/0x1e0 [ 106.481016][ C0] smp_apic_timer_interrupt+0x1a3/0x610 [ 106.486558][ C0] apic_timer_interrupt+0xf/0x20 [ 106.491642][ C0] [ 106.494581][ C0] RIP: 0010:clear_page_erms+0x7/0x10 [ 106.499967][ C0] Code: 48 89 47 18 48 89 47 20 48 89 47 28 48 89 47 30 48 89 47 38 48 8d 7f 40 75 d9 90 c3 0f 1f 80 00 00 00 00 b9 00 10 00 00 31 c0 aa c3 cc cc cc cc cc cc 55 48 89 e5 41 57 41 56 41 55 41 54 53 [ 106.519675][ C0] RSP: 0000:ffffc90003637b68 EFLAGS: 00010246 ORIG_RAX: ffffffffffffff13 [ 106.528137][ C0] RAX: 0000000000000000 RBX: ffff888000000000 RCX: 00000000000000c0 [ 106.536213][ C0] RDX: 1ffff11013fae685 RSI: ffffffff81a1b646 RDI: ffff888089c65f40 [ 106.544178][ C0] RBP: ffffc90003637b80 R08: ffff88809fd72040 R09: ffffed1015d0703d [ 106.552149][ C0] R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: ffff88809fd72040 [ 106.560205][ C0] R13: 0000000000000065 R14: 0000000000000000 R15: 0000000000000000 [ 106.568185][ C0] ? clear_subpage+0x16/0x110 [ 106.572852][ C0] ? clear_subpage+0x85/0x110 [ 106.577524][ C0] clear_huge_page+0xb5/0x3e0 [ 106.582192][ C0] do_huge_pmd_anonymous_page+0x6a6/0x1a50 [ 106.588096][ C0] ? mark_lock+0xc2/0x1220 [ 106.592506][ C0] ? do_wp_page+0x54b/0x1540 [ 106.597094][ C0] ? prep_transhuge_page+0xa0/0xa0 [ 106.602305][ C0] __handle_mm_fault+0x3145/0x3cc0 [ 106.607443][ C0] ? apply_to_existing_page_range+0x50/0x50 [ 106.613323][ C0] ? handle_mm_fault+0x292/0xa50 [ 106.618274][ C0] ? handle_mm_fault+0x7a0/0xa50 [ 106.623294][ C0] ? __kasan_check_read+0x11/0x20 [ 106.628398][ C0] handle_mm_fault+0x3b2/0xa50 [ 106.633207][ C0] __do_page_fault+0x536/0xd80 [ 106.637972][ C0] do_page_fault+0x38/0x590 [ 106.642518][ C0] page_fault+0x39/0x40 [ 106.646659][ C0] RIP: 0033:0x400713 [ 106.650551][ C0] Code: 03 00 00 00 be 10 00 00 00 bf 29 00 00 00 e8 84 0c 04 00 48 83 f8 ff 74 07 48 89 05 87 a9 2c 00 48 b8 62 69 74 6d 61 70 3a 70 <48> c7 04 25 40 01 00 20 00 00 00 00 c7 04 25 48 01 00 20 00 00 00 [ 106.670501][ C0] RSP: 002b:00007fff88b8f630 EFLAGS: 00010213 [ 106.676558][ C0] RAX: 703a70616d746962 RBX: 0000000000000000 RCX: 0000000000441399 [ 106.684520][ C0] RDX: 000000000000000c RSI: 0000000000000003 RDI: 0000000000000010 [ 106.692487][ C0] RBP: 0000000000019efd R08: 0000000000000004 R09: 00000000004002c8 [ 106.700538][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004021c0 [ 106.708497][ C0] R13: 0000000000402250 R14: 0000000000000000 R15: 0000000000000000 [ 106.716476][ C0] [ 106.718799][ C0] Allocated by task 9653: [ 106.723133][ C0] save_stack+0x23/0x90 [ 106.727290][ C0] __kasan_kmalloc.constprop.0+0xcf/0xe0 [ 106.732909][ C0] kasan_kmalloc+0x9/0x10 [ 106.737229][ C0] __kmalloc+0x163/0x770 [ 106.741457][ C0] ip_set_alloc+0x38/0x5e [ 106.745779][ C0] bitmap_port_create+0x3dc/0x7c0 [ 106.750794][ C0] ip_set_create+0x6f1/0x1500 [ 106.755464][ C0] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 106.760432][ C0] netlink_rcv_skb+0x177/0x450 [ 106.765203][ C0] nfnetlink_rcv+0x1ba/0x460 [ 106.769790][ C0] netlink_unicast+0x58c/0x7d0 [ 106.774544][ C0] netlink_sendmsg+0x91c/0xea0 [ 106.779304][ C0] sock_sendmsg+0xd7/0x130 [ 106.783712][ C0] ____sys_sendmsg+0x753/0x880 [ 106.788472][ C0] ___sys_sendmsg+0x100/0x170 [ 106.793618][ C0] __sys_sendmsg+0x105/0x1d0 [ 106.798194][ C0] __x64_sys_sendmsg+0x78/0xb0 [ 106.802941][ C0] do_syscall_64+0xfa/0x790 [ 106.807549][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 106.813426][ C0] [ 106.815740][ C0] Freed by task 9376: [ 106.819711][ C0] save_stack+0x23/0x90 [ 106.823953][ C0] __kasan_slab_free+0x102/0x150 [ 106.828884][ C0] kasan_slab_free+0xe/0x10 [ 106.833486][ C0] kfree+0x10a/0x2c0 [ 106.837378][ C0] tomoyo_check_open_permission+0x19e/0x3e0 [ 106.843264][ C0] tomoyo_file_open+0xa9/0xd0 [ 106.848025][ C0] security_file_open+0x71/0x300 [ 106.852958][ C0] do_dentry_open+0x37a/0x1380 [ 106.857710][ C0] vfs_open+0xa0/0xd0 [ 106.861688][ C0] path_openat+0x118b/0x3180 [ 106.866480][ C0] do_filp_open+0x1a1/0x280 [ 106.870970][ C0] do_sys_open+0x3fe/0x5d0 [ 106.875422][ C0] __x64_sys_open+0x7e/0xc0 [ 106.879913][ C0] do_syscall_64+0xfa/0x790 [ 106.884405][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 106.890399][ C0] [ 106.892718][ C0] The buggy address belongs to the object at ffff88809fef6e40 [ 106.892718][ C0] which belongs to the cache kmalloc-32 of size 32 [ 106.906588][ C0] The buggy address is located 0 bytes inside of [ 106.906588][ C0] 32-byte region [ffff88809fef6e40, ffff88809fef6e60) [ 106.920193][ C0] The buggy address belongs to the page: [ 106.925875][ C0] page:ffffea00027fbd80 refcount:1 mapcount:0 mapping:ffff8880aa4001c0 index:0xffff88809fef6fc1 [ 106.936390][ C0] raw: 00fffe0000000200 ffffea00024dd208 ffffea00029aad48 ffff8880aa4001c0 [ 106.946549][ C0] raw: ffff88809fef6fc1 ffff88809fef6000 0000000100000035 0000000000000000 [ 106.955117][ C0] page dumped because: kasan: bad access detected [ 106.961518][ C0] [ 106.963831][ C0] Memory state around the buggy address: [ 106.969448][ C0] ffff88809fef6d00: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc [ 106.977742][ C0] ffff88809fef6d80: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc [ 106.985896][ C0] >ffff88809fef6e00: fb fb fb fb fc fc fc fc 04 fc fc fc fc fc fc fc [ 106.994008][ C0] ^ [ 107.000154][ C0] ffff88809fef6e80: fb fb fb fb fc fc fc fc 00 01 fc fc fc fc fc fc [ 107.008208][ C0] ffff88809fef6f00: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc [ 107.016257][ C0] ================================================================== [ 107.024411][ C0] Disabling lock debugging due to kernel taint [ 107.030674][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 107.037328][ C0] CPU: 0 PID: 10003 Comm: syz-executor006 Tainted: G B 5.5.0-rc6-syzkaller #0 [ 107.047465][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 107.057513][ C0] Call Trace: [ 107.060794][ C0] [ 107.063634][ C0] dump_stack+0x197/0x210 [ 107.067973][ C0] panic+0x2e3/0x75c [ 107.071859][ C0] ? add_taint.cold+0x16/0x16 [ 107.076534][ C0] ? retint_kernel+0x2b/0x2b [ 107.081114][ C0] ? trace_hardirqs_on+0x5e/0x240 [ 107.086128][ C0] ? bitmap_port_gc+0x112/0x4f0 [ 107.090974][ C0] end_report+0x47/0x4f [ 107.095113][ C0] ? bitmap_port_gc+0x112/0x4f0 [ 107.099954][ C0] __kasan_report.cold+0xe/0x41 [ 107.104923][ C0] ? bitmap_port_gc+0x112/0x4f0 [ 107.109855][ C0] kasan_report+0x12/0x20 [ 107.114186][ C0] check_memory_region+0x134/0x1a0 [ 107.119374][ C0] __kasan_check_read+0x11/0x20 [ 107.124340][ C0] bitmap_port_gc+0x112/0x4f0 [ 107.129012][ C0] call_timer_fn+0x1ac/0x780 [ 107.133605][ C0] ? bitmap_port_test+0x170/0x170 [ 107.138621][ C0] ? msleep_interruptible+0x150/0x150 [ 107.144133][ C0] ? run_timer_softirq+0x6b1/0x1790 [ 107.149371][ C0] ? trace_hardirqs_on+0x67/0x240 [ 107.154381][ C0] ? bitmap_port_test+0x170/0x170 [ 107.159606][ C0] ? bitmap_port_test+0x170/0x170 [ 107.164628][ C0] run_timer_softirq+0x6c3/0x1790 [ 107.169650][ C0] ? add_timer+0x930/0x930 [ 107.174057][ C0] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 107.180202][ C0] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 107.185741][ C0] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 107.191774][ C0] ? trace_hardirqs_on+0x67/0x240 [ 107.196881][ C0] __do_softirq+0x262/0x98c [ 107.201376][ C0] ? sched_clock_cpu+0x1b/0x1b0 [ 107.206216][ C0] irq_exit+0x19b/0x1e0 [ 107.210385][ C0] smp_apic_timer_interrupt+0x1a3/0x610 [ 107.215942][ C0] apic_timer_interrupt+0xf/0x20 [ 107.220890][ C0] [ 107.223817][ C0] RIP: 0010:clear_page_erms+0x7/0x10 [ 107.229214][ C0] Code: 48 89 47 18 48 89 47 20 48 89 47 28 48 89 47 30 48 89 47 38 48 8d 7f 40 75 d9 90 c3 0f 1f 80 00 00 00 00 b9 00 10 00 00 31 c0 aa c3 cc cc cc cc cc cc 55 48 89 e5 41 57 41 56 41 55 41 54 53 [ 107.248806][ C0] RSP: 0000:ffffc90003637b68 EFLAGS: 00010246 ORIG_RAX: ffffffffffffff13 [ 107.257209][ C0] RAX: 0000000000000000 RBX: ffff888000000000 RCX: 00000000000000c0 [ 107.265256][ C0] RDX: 1ffff11013fae685 RSI: ffffffff81a1b646 RDI: ffff888089c65f40 [ 107.273252][ C0] RBP: ffffc90003637b80 R08: ffff88809fd72040 R09: ffffed1015d0703d [ 107.281275][ C0] R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: ffff88809fd72040 [ 107.289354][ C0] R13: 0000000000000065 R14: 0000000000000000 R15: 0000000000000000 [ 107.297332][ C0] ? clear_subpage+0x16/0x110 [ 107.302193][ C0] ? clear_subpage+0x85/0x110 [ 107.306908][ C0] clear_huge_page+0xb5/0x3e0 [ 107.311689][ C0] do_huge_pmd_anonymous_page+0x6a6/0x1a50 [ 107.317676][ C0] ? mark_lock+0xc2/0x1220 [ 107.322081][ C0] ? do_wp_page+0x54b/0x1540 [ 107.326749][ C0] ? prep_transhuge_page+0xa0/0xa0 [ 107.331860][ C0] __handle_mm_fault+0x3145/0x3cc0 [ 107.337120][ C0] ? apply_to_existing_page_range+0x50/0x50 [ 107.343179][ C0] ? handle_mm_fault+0x292/0xa50 [ 107.348113][ C0] ? handle_mm_fault+0x7a0/0xa50 [ 107.353146][ C0] ? __kasan_check_read+0x11/0x20 [ 107.358175][ C0] handle_mm_fault+0x3b2/0xa50 [ 107.362954][ C0] __do_page_fault+0x536/0xd80 [ 107.367718][ C0] do_page_fault+0x38/0x590 [ 107.372272][ C0] page_fault+0x39/0x40 [ 107.376414][ C0] RIP: 0033:0x400713 [ 107.380347][ C0] Code: 03 00 00 00 be 10 00 00 00 bf 29 00 00 00 e8 84 0c 04 00 48 83 f8 ff 74 07 48 89 05 87 a9 2c 00 48 b8 62 69 74 6d 61 70 3a 70 <48> c7 04 25 40 01 00 20 00 00 00 00 c7 04 25 48 01 00 20 00 00 00 [ 107.400068][ C0] RSP: 002b:00007fff88b8f630 EFLAGS: 00010213 [ 107.406133][ C0] RAX: 703a70616d746962 RBX: 0000000000000000 RCX: 0000000000441399 [ 107.414093][ C0] RDX: 000000000000000c RSI: 0000000000000003 RDI: 0000000000000010 [ 107.422281][ C0] RBP: 0000000000019efd R08: 0000000000000004 R09: 00000000004002c8 [ 107.430363][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004021c0 [ 107.438326][ C0] R13: 0000000000402250 R14: 0000000000000000 R15: 0000000000000000 [ 107.446957][ C0] Kernel Offset: disabled [ 107.451300][ C0] Rebooting in 86400 seconds..