[ 87.685871][ T27] audit: type=1800 audit(1579365120.737:26): pid=9511 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[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 88.663282][ T27] kauditd_printk_skb: 2 callbacks suppressed [ 88.663294][ T27] audit: type=1800 audit(1579365121.737:29): pid=9511 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 [ 88.690220][ T27] audit: type=1800 audit(1579365121.737:30): pid=9511 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 '10.128.0.133' (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 executing program executing program executing program executing program executing program executing program executing program executing program executing program 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: [ 99.816764][ C0] ================================================================== [ 99.825178][ C0] BUG: KASAN: slab-out-of-bounds in bitmap_port_gc+0x112/0x4f0 [ 99.832733][ C0] Read of size 8 at addr ffff8880a3f9abc0 by task syz-executor663/10036 [ 99.841054][ C0] [ 99.843378][ C0] CPU: 0 PID: 10036 Comm: syz-executor663 Not tainted 5.5.0-rc6-syzkaller #0 [ 99.852132][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 99.862415][ C0] Call Trace: [ 99.865699][ C0] [ 99.868560][ C0] dump_stack+0x197/0x210 [ 99.872899][ C0] ? bitmap_port_gc+0x112/0x4f0 [ 99.877846][ C0] print_address_description.constprop.0.cold+0xd4/0x30b [ 99.884964][ C0] ? bitmap_port_gc+0x112/0x4f0 [ 99.889812][ C0] ? bitmap_port_gc+0x112/0x4f0 [ 99.895390][ C0] __kasan_report.cold+0x1b/0x41 [ 99.900355][ C0] ? bitmap_port_gc+0x112/0x4f0 [ 99.905204][ C0] kasan_report+0x12/0x20 [ 99.909546][ C0] check_memory_region+0x134/0x1a0 [ 99.914657][ C0] __kasan_check_read+0x11/0x20 [ 99.919505][ C0] bitmap_port_gc+0x112/0x4f0 [ 99.924192][ C0] call_timer_fn+0x1ac/0x780 [ 99.928781][ C0] ? bitmap_port_test+0x170/0x170 [ 99.933889][ C0] ? msleep_interruptible+0x150/0x150 [ 99.939338][ C0] ? run_timer_softirq+0x6b1/0x1790 [ 99.944614][ C0] ? trace_hardirqs_on+0x67/0x240 [ 99.950358][ C0] ? bitmap_port_test+0x170/0x170 [ 99.955384][ C0] ? bitmap_port_test+0x170/0x170 [ 99.960416][ C0] run_timer_softirq+0x6c3/0x1790 [ 99.965439][ C0] ? add_timer+0x930/0x930 [ 99.969955][ C0] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 99.976128][ C0] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 99.981675][ C0] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 99.987653][ C0] ? trace_hardirqs_on+0x67/0x240 [ 99.993570][ C0] __do_softirq+0x262/0x98c [ 99.998184][ C0] ? sched_clock_cpu+0x1b/0x1b0 [ 100.003031][ C0] irq_exit+0x19b/0x1e0 [ 100.007184][ C0] smp_apic_timer_interrupt+0x1a3/0x610 [ 100.012820][ C0] apic_timer_interrupt+0xf/0x20 [ 100.017763][ C0] [ 100.020804][ C0] RIP: 0010:write_comp_data+0x1e/0x70 [ 100.026298][ C0] Code: 48 89 34 d1 48 89 11 5d c3 0f 1f 00 65 4c 8b 04 25 c0 1e 02 00 65 8b 05 a8 28 8d 7e a9 00 01 1f 00 75 51 41 8b 80 80 13 00 00 <83> f8 03 75 45 49 8b 80 88 13 00 00 45 8b 80 84 13 00 00 4c 8b 08 [ 100.046063][ C0] RSP: 0000:ffffc90003777e00 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 100.054550][ C0] RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff819ffb83 [ 100.062519][ C0] RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000005 [ 100.070534][ C0] RBP: ffffc90003777e08 R08: ffff88808f8e6040 R09: fffffbfff165e7ae [ 100.078496][ C0] R10: ffff88808f8e68d8 R11: ffff88808f8e6040 R12: 0000000000000001 [ 100.086566][ C0] R13: 00000000006cb090 R14: dffffc0000000000 R15: ffff888095bf7000 [ 100.094548][ C0] ? vmacache_find+0x243/0x310 [ 100.099316][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 100.105560][ C0] vmacache_find+0x243/0x310 [ 100.110170][ C0] find_vma+0x23/0x170 [ 100.114240][ C0] __do_page_fault+0x37a/0xd80 [ 100.119007][ C0] ? page_fault+0x16/0x40 [ 100.123344][ C0] do_page_fault+0x38/0x590 [ 100.127837][ C0] page_fault+0x39/0x40 [ 100.131987][ C0] RIP: 0033:0x400702 [ 100.135872][ C0] Code: 01 00 00 00 e8 ef 09 00 00 31 c0 b9 0c 00 00 00 ba 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 [ 100.156034][ C0] RSP: 002b:00007fffcf827620 EFLAGS: 00010213 [ 100.162156][ C0] RAX: 0000000000000003 RBX: 0000000000000000 RCX: 0000000000441399 [ 100.170175][ C0] RDX: 000000000000000c RSI: 0000000000000003 RDI: 0000000000000010 [ 100.178364][ C0] RBP: 00000000000185b9 R08: 0000000000000004 R09: 00000000004002c8 [ 100.186338][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004021c0 [ 100.194410][ C0] R13: 0000000000402250 R14: 0000000000000000 R15: 0000000000000000 [ 100.202383][ C0] [ 100.204697][ C0] Allocated by task 9665: [ 100.209025][ C0] save_stack+0x23/0x90 [ 100.213174][ C0] __kasan_kmalloc.constprop.0+0xcf/0xe0 [ 100.218792][ C0] kasan_kmalloc+0x9/0x10 [ 100.223705][ C0] __kmalloc+0x163/0x770 [ 100.227996][ C0] ip_set_alloc+0x38/0x5e [ 100.232477][ C0] bitmap_port_create+0x3dc/0x7c0 [ 100.237756][ C0] ip_set_create+0x6f1/0x1500 [ 100.242424][ C0] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 100.247481][ C0] netlink_rcv_skb+0x177/0x450 [ 100.252235][ C0] nfnetlink_rcv+0x1ba/0x460 [ 100.256913][ C0] netlink_unicast+0x58c/0x7d0 [ 100.261670][ C0] netlink_sendmsg+0x91c/0xea0 [ 100.266430][ C0] sock_sendmsg+0xd7/0x130 [ 100.270842][ C0] ____sys_sendmsg+0x753/0x880 [ 100.275607][ C0] ___sys_sendmsg+0x100/0x170 [ 100.280279][ C0] __sys_sendmsg+0x105/0x1d0 [ 100.284875][ C0] __x64_sys_sendmsg+0x78/0xb0 [ 100.289626][ C0] do_syscall_64+0xfa/0x790 [ 100.294114][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 100.300773][ C0] [ 100.303087][ C0] Freed by task 9391: [ 100.307235][ C0] save_stack+0x23/0x90 [ 100.311378][ C0] __kasan_slab_free+0x102/0x150 [ 100.316305][ C0] kasan_slab_free+0xe/0x10 [ 100.320796][ C0] kfree+0x10a/0x2c0 [ 100.324683][ C0] tomoyo_check_open_permission+0x19e/0x3e0 [ 100.330649][ C0] tomoyo_file_open+0xa9/0xd0 [ 100.335476][ C0] security_file_open+0x71/0x300 [ 100.340410][ C0] do_dentry_open+0x37a/0x1380 [ 100.345164][ C0] vfs_open+0xa0/0xd0 [ 100.349171][ C0] path_openat+0x118b/0x3180 [ 100.353748][ C0] do_filp_open+0x1a1/0x280 [ 100.358241][ C0] do_sys_open+0x3fe/0x5d0 [ 100.362760][ C0] __x64_sys_open+0x7e/0xc0 [ 100.367363][ C0] do_syscall_64+0xfa/0x790 [ 100.371856][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 100.377731][ C0] [ 100.380047][ C0] The buggy address belongs to the object at ffff8880a3f9abc0 [ 100.380047][ C0] which belongs to the cache kmalloc-32 of size 32 [ 100.393934][ C0] The buggy address is located 0 bytes inside of [ 100.393934][ C0] 32-byte region [ffff8880a3f9abc0, ffff8880a3f9abe0) [ 100.406931][ C0] The buggy address belongs to the page: [ 100.412564][ C0] page:ffffea00028fe680 refcount:1 mapcount:0 mapping:ffff8880aa4001c0 index:0xffff8880a3f9afc1 [ 100.422966][ C0] raw: 00fffe0000000200 ffffea00025ac3c8 ffffea0002a00088 ffff8880aa4001c0 [ 100.431548][ C0] raw: ffff8880a3f9afc1 ffff8880a3f9a000 000000010000002f 0000000000000000 [ 100.440327][ C0] page dumped because: kasan: bad access detected [ 100.446721][ C0] [ 100.449053][ C0] Memory state around the buggy address: [ 100.454670][ C0] ffff8880a3f9aa80: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc [ 100.462893][ C0] ffff8880a3f9ab00: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc [ 100.470948][ C0] >ffff8880a3f9ab80: fb fb fb fb fc fc fc fc 04 fc fc fc fc fc fc fc [ 100.479004][ C0] ^ [ 100.485150][ C0] ffff8880a3f9ac00: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc [ 100.493278][ C0] ffff8880a3f9ac80: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc [ 100.501748][ C0] ================================================================== [ 100.510162][ C0] Disabling lock debugging due to kernel taint [ 100.516362][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 100.523047][ C0] CPU: 0 PID: 10036 Comm: syz-executor663 Tainted: G B 5.5.0-rc6-syzkaller #0 [ 100.533432][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 100.543531][ C0] Call Trace: [ 100.546809][ C0] [ 100.549652][ C0] dump_stack+0x197/0x210 [ 100.554106][ C0] panic+0x2e3/0x75c [ 100.558004][ C0] ? add_taint.cold+0x16/0x16 [ 100.562761][ C0] ? retint_kernel+0x2b/0x2b [ 100.567389][ C0] ? trace_hardirqs_on+0x5e/0x240 [ 100.572402][ C0] ? bitmap_port_gc+0x112/0x4f0 [ 100.577233][ C0] end_report+0x47/0x4f [ 100.581506][ C0] ? bitmap_port_gc+0x112/0x4f0 [ 100.586342][ C0] __kasan_report.cold+0xe/0x41 [ 100.591183][ C0] ? bitmap_port_gc+0x112/0x4f0 [ 100.596022][ C0] kasan_report+0x12/0x20 [ 100.600349][ C0] check_memory_region+0x134/0x1a0 [ 100.605711][ C0] __kasan_check_read+0x11/0x20 [ 100.610552][ C0] bitmap_port_gc+0x112/0x4f0 [ 100.615222][ C0] call_timer_fn+0x1ac/0x780 [ 100.619795][ C0] ? bitmap_port_test+0x170/0x170 [ 100.624865][ C0] ? msleep_interruptible+0x150/0x150 [ 100.630295][ C0] ? run_timer_softirq+0x6b1/0x1790 [ 100.635478][ C0] ? trace_hardirqs_on+0x67/0x240 [ 100.640493][ C0] ? bitmap_port_test+0x170/0x170 [ 100.645514][ C0] ? bitmap_port_test+0x170/0x170 [ 100.650527][ C0] run_timer_softirq+0x6c3/0x1790 [ 100.655560][ C0] ? add_timer+0x930/0x930 [ 100.660063][ C0] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 100.666207][ C0] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 100.671771][ C0] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 100.677746][ C0] ? trace_hardirqs_on+0x67/0x240 [ 100.682769][ C0] __do_softirq+0x262/0x98c [ 100.687406][ C0] ? sched_clock_cpu+0x1b/0x1b0 [ 100.692280][ C0] irq_exit+0x19b/0x1e0 [ 100.696454][ C0] smp_apic_timer_interrupt+0x1a3/0x610 [ 100.701996][ C0] apic_timer_interrupt+0xf/0x20 [ 100.706914][ C0] [ 100.709847][ C0] RIP: 0010:write_comp_data+0x1e/0x70 [ 100.715297][ C0] Code: 48 89 34 d1 48 89 11 5d c3 0f 1f 00 65 4c 8b 04 25 c0 1e 02 00 65 8b 05 a8 28 8d 7e a9 00 01 1f 00 75 51 41 8b 80 80 13 00 00 <83> f8 03 75 45 49 8b 80 88 13 00 00 45 8b 80 84 13 00 00 4c 8b 08 [ 100.734905][ C0] RSP: 0000:ffffc90003777e00 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 100.743434][ C0] RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff819ffb83 [ 100.751480][ C0] RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000005 [ 100.759714][ C0] RBP: ffffc90003777e08 R08: ffff88808f8e6040 R09: fffffbfff165e7ae [ 100.767858][ C0] R10: ffff88808f8e68d8 R11: ffff88808f8e6040 R12: 0000000000000001 [ 100.775818][ C0] R13: 00000000006cb090 R14: dffffc0000000000 R15: ffff888095bf7000 [ 100.783964][ C0] ? vmacache_find+0x243/0x310 [ 100.788723][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 100.795053][ C0] vmacache_find+0x243/0x310 [ 100.799684][ C0] find_vma+0x23/0x170 [ 100.803831][ C0] __do_page_fault+0x37a/0xd80 [ 100.808612][ C0] ? page_fault+0x16/0x40 [ 100.812932][ C0] do_page_fault+0x38/0x590 [ 100.817419][ C0] page_fault+0x39/0x40 [ 100.821628][ C0] RIP: 0033:0x400702 [ 100.825631][ C0] Code: 01 00 00 00 e8 ef 09 00 00 31 c0 b9 0c 00 00 00 ba 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 [ 100.846123][ C0] RSP: 002b:00007fffcf827620 EFLAGS: 00010213 [ 100.852359][ C0] RAX: 0000000000000003 RBX: 0000000000000000 RCX: 0000000000441399 [ 100.860536][ C0] RDX: 000000000000000c RSI: 0000000000000003 RDI: 0000000000000010 [ 100.868872][ C0] RBP: 00000000000185b9 R08: 0000000000000004 R09: 00000000004002c8 [ 100.876844][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004021c0 [ 100.884899][ C0] R13: 0000000000402250 R14: 0000000000000000 R15: 0000000000000000 [ 100.894059][ C0] Kernel Offset: disabled [ 100.898428][ C0] Rebooting in 86400 seconds..