[ 77.518227][ T27] audit: type=1800 audit(1580373790.559:25): pid=9254 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 77.561401][ T27] audit: type=1800 audit(1580373790.559:26): pid=9254 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 77.614150][ T27] audit: type=1800 audit(1580373790.559:27): pid=9254 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. [ 77.947021][ T9319] sshd (9319) used greatest stack depth: 22776 bytes left [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.114' (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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 88.901629][ C1] ================================================================== [ 88.901682][ C1] BUG: KASAN: slab-out-of-bounds in bitmap_port_gc+0x112/0x4f0 [ 88.917385][ C1] Read of size 8 at addr ffff88809a1a9940 by task syz-executor971/9792 [ 88.925594][ C1] [ 88.927910][ C1] CPU: 1 PID: 9792 Comm: syz-executor971 Not tainted 5.5.0-rc6-next-20200116-syzkaller #0 [ 88.937773][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 88.947806][ C1] Call Trace: [ 88.951067][ C1] [ 88.953918][ C1] dump_stack+0x197/0x210 [ 88.958228][ C1] ? bitmap_port_gc+0x112/0x4f0 [ 88.963067][ C1] print_address_description.constprop.0.cold+0xd4/0x30b [ 88.970065][ C1] ? bitmap_port_gc+0x112/0x4f0 [ 88.974893][ C1] ? bitmap_port_gc+0x112/0x4f0 [ 88.979720][ C1] __kasan_report.cold+0x1b/0x32 [ 88.984635][ C1] ? bitmap_port_gc+0x112/0x4f0 [ 88.989485][ C1] kasan_report+0x12/0x20 [ 88.993807][ C1] check_memory_region+0x134/0x1a0 [ 88.998900][ C1] __kasan_check_read+0x11/0x20 [ 89.003728][ C1] bitmap_port_gc+0x112/0x4f0 [ 89.008390][ C1] call_timer_fn+0x1ac/0x780 [ 89.012958][ C1] ? bitmap_port_test+0x170/0x170 [ 89.017962][ C1] ? msleep_interruptible+0x150/0x150 [ 89.023329][ C1] ? run_timer_softirq+0x6b1/0x1790 [ 89.028531][ C1] ? trace_hardirqs_on+0x67/0x240 [ 89.033553][ C1] ? bitmap_port_test+0x170/0x170 [ 89.038571][ C1] ? bitmap_port_test+0x170/0x170 [ 89.043587][ C1] run_timer_softirq+0x6c3/0x1790 [ 89.048594][ C1] ? add_timer+0x930/0x930 [ 89.052992][ C1] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 89.059128][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 89.064651][ C1] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 89.070610][ C1] ? trace_hardirqs_on+0x67/0x240 [ 89.075614][ C1] __do_softirq+0x262/0x98c [ 89.080092][ C1] ? sched_clock_cpu+0x1b/0x1b0 [ 89.084945][ C1] irq_exit+0x19b/0x1e0 [ 89.089083][ C1] smp_apic_timer_interrupt+0x1a3/0x610 [ 89.094611][ C1] apic_timer_interrupt+0xf/0x20 [ 89.099567][ C1] [ 89.102496][ C1] RIP: 0010:__kasan_check_write+0xf/0x20 [ 89.108104][ C1] Code: 48 89 e5 48 8b 4d 08 e8 af 2a 00 00 5d c3 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 55 89 f6 ba 01 00 00 00 48 89 e5 48 8b 4d 08 8c 2a 00 00 5d c3 66 2e 0f 1f 84 00 00 00 00 00 55 31 d2 be 40 [ 89.127685][ C1] RSP: 0018:ffffc900037e7a40 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 [ 89.136073][ C1] RAX: ffff888089a84180 RBX: 0000000000000012 RCX: ffffffff839e8bd0 [ 89.144023][ C1] RDX: 0000000000000001 RSI: 0000000000000012 RDI: ffff8880a94e3000 [ 89.151972][ C1] RBP: ffffc900037e7a40 R08: ffff888089a84180 R09: ffff888089a84a18 [ 89.159925][ C1] R10: fffffbfff154a5c8 R11: ffffffff8aa52e47 R12: 00000000004a23db [ 89.167885][ C1] R13: ffff8880a94e3000 R14: 00000000004a23ed R15: 00007ffffffff000 [ 89.175851][ C1] ? copyin+0x120/0x150 [ 89.179992][ C1] copyin+0x120/0x150 [ 89.183961][ C1] copy_page_from_iter+0x3d5/0x810 [ 89.189054][ C1] pipe_write+0x953/0x15a0 [ 89.193453][ C1] ? generic_pipe_buf_steal+0x1d0/0x1d0 [ 89.198997][ C1] ? lock_downgrade+0x920/0x920 [ 89.203853][ C1] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 89.209646][ C1] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 89.215866][ C1] ? iov_iter_init+0xee/0x220 [ 89.220544][ C1] new_sync_write+0x4d3/0x770 [ 89.225219][ C1] ? new_sync_read+0x800/0x800 [ 89.230003][ C1] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 89.236155][ C1] ? apparmor_file_permission+0x27/0x30 [ 89.241685][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 89.247912][ C1] ? security_file_permission+0x8f/0x380 [ 89.253634][ C1] __vfs_write+0xe1/0x110 [ 89.257945][ C1] vfs_write+0x268/0x5d0 [ 89.262171][ C1] ksys_write+0x220/0x290 [ 89.266480][ C1] ? __ia32_sys_read+0xb0/0xb0 [ 89.271232][ C1] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 89.276677][ C1] ? do_syscall_64+0x26/0x790 [ 89.281347][ C1] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 89.287392][ C1] ? do_syscall_64+0x26/0x790 [ 89.292051][ C1] __x64_sys_write+0x73/0xb0 [ 89.296630][ C1] do_syscall_64+0xfa/0x790 [ 89.301111][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 89.306977][ C1] RIP: 0033:0x4010e0 [ 89.310854][ C1] Code: 44 89 e7 41 bd 01 00 00 00 e8 6c 00 00 00 eb cc e8 35 35 04 00 0f 1f 44 00 00 83 3d ed 15 2d 00 00 75 14 b8 01 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 54 0c 00 00 c3 48 83 ec 08 e8 ba 01 00 00 [ 89.330449][ C1] RSP: 002b:00007ffd0c4663a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 89.338837][ C1] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004010e0 [ 89.346829][ C1] RDX: 0000000000000012 RSI: 00000000004a23db RDI: 0000000000000001 [ 89.354781][ C1] RBP: 0000000000015b1e R08: 0000000000000000 R09: 0000000000000004 [ 89.362731][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004021c0 [ 89.370676][ C1] R13: 0000000000402250 R14: 0000000000000000 R15: 0000000000000000 [ 89.378666][ C1] [ 89.380974][ C1] Allocated by task 9410: [ 89.385317][ C1] save_stack+0x23/0x90 [ 89.389487][ C1] __kasan_kmalloc.constprop.0+0xcf/0xe0 [ 89.395094][ C1] kasan_kmalloc+0x9/0x10 [ 89.399398][ C1] __kmalloc+0x163/0x770 [ 89.403615][ C1] ip_set_alloc+0x38/0x5e [ 89.407918][ C1] bitmap_port_create+0x3dc/0x7c0 [ 89.412918][ C1] ip_set_create+0x6f1/0x1500 [ 89.417577][ C1] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 89.422489][ C1] netlink_rcv_skb+0x177/0x450 [ 89.427238][ C1] nfnetlink_rcv+0x1ba/0x460 [ 89.431812][ C1] netlink_unicast+0x59e/0x7e0 [ 89.436551][ C1] netlink_sendmsg+0x91c/0xea0 [ 89.441289][ C1] sock_sendmsg+0xd7/0x130 [ 89.445686][ C1] ____sys_sendmsg+0x753/0x880 [ 89.450423][ C1] ___sys_sendmsg+0x100/0x170 [ 89.455084][ C1] __sys_sendmsg+0x105/0x1d0 [ 89.459659][ C1] __x64_sys_sendmsg+0x78/0xb0 [ 89.464414][ C1] do_syscall_64+0xfa/0x790 [ 89.468918][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 89.474791][ C1] [ 89.477099][ C1] Freed by task 9136: [ 89.481056][ C1] save_stack+0x23/0x90 [ 89.485189][ C1] __kasan_slab_free+0x102/0x150 [ 89.490103][ C1] kasan_slab_free+0xe/0x10 [ 89.494587][ C1] kfree+0x10a/0x2c0 [ 89.498465][ C1] single_release+0x95/0xc0 [ 89.502950][ C1] __fput+0x2ff/0x890 [ 89.506916][ C1] ____fput+0x16/0x20 [ 89.510876][ C1] task_work_run+0x145/0x1c0 [ 89.515444][ C1] exit_to_usermode_loop+0x316/0x380 [ 89.520710][ C1] do_syscall_64+0x676/0x790 [ 89.525276][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 89.531137][ C1] [ 89.533446][ C1] The buggy address belongs to the object at ffff88809a1a9940 [ 89.533446][ C1] which belongs to the cache kmalloc-32 of size 32 [ 89.547310][ C1] The buggy address is located 0 bytes inside of [ 89.547310][ C1] 32-byte region [ffff88809a1a9940, ffff88809a1a9960) [ 89.560289][ C1] The buggy address belongs to the page: [ 89.565901][ C1] page:ffffea0002686a40 refcount:1 mapcount:0 mapping:ffff8880aa4001c0 index:0xffff88809a1a9fc1 [ 89.576282][ C1] flags: 0xfffe0000000200(slab) [ 89.581113][ C1] raw: 00fffe0000000200 ffffea0002615908 ffffea000257e6c8 ffff8880aa4001c0 [ 89.589676][ C1] raw: ffff88809a1a9fc1 ffff88809a1a9000 000000010000003f 0000000000000000 [ 89.598234][ C1] page dumped because: kasan: bad access detected [ 89.604615][ C1] [ 89.606917][ C1] Memory state around the buggy address: [ 89.612522][ C1] ffff88809a1a9800: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc [ 89.620558][ C1] ffff88809a1a9880: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc [ 89.628595][ C1] >ffff88809a1a9900: fb fb fb fb fc fc fc fc 04 fc fc fc fc fc fc fc [ 89.636636][ C1] ^ [ 89.642761][ C1] ffff88809a1a9980: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc [ 89.650854][ C1] ffff88809a1a9a00: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc [ 89.658891][ C1] ================================================================== [ 89.666925][ C1] Disabling lock debugging due to kernel taint [ 89.673096][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 89.679671][ C1] CPU: 1 PID: 9792 Comm: syz-executor971 Tainted: G B 5.5.0-rc6-next-20200116-syzkaller #0 [ 89.690920][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 89.700950][ C1] Call Trace: [ 89.704209][ C1] [ 89.707045][ C1] dump_stack+0x197/0x210 [ 89.711352][ C1] panic+0x2e3/0x75c [ 89.715223][ C1] ? add_taint.cold+0x16/0x16 [ 89.719876][ C1] ? retint_kernel+0x2b/0x2b [ 89.724468][ C1] ? trace_hardirqs_on+0x5e/0x240 [ 89.729491][ C1] ? bitmap_port_gc+0x112/0x4f0 [ 89.734318][ C1] end_report+0x47/0x4f [ 89.738451][ C1] ? bitmap_port_gc+0x112/0x4f0 [ 89.743288][ C1] __kasan_report.cold+0xe/0x32 [ 89.748116][ C1] ? bitmap_port_gc+0x112/0x4f0 [ 89.752943][ C1] kasan_report+0x12/0x20 [ 89.757251][ C1] check_memory_region+0x134/0x1a0 [ 89.762349][ C1] __kasan_check_read+0x11/0x20 [ 89.767174][ C1] bitmap_port_gc+0x112/0x4f0 [ 89.771828][ C1] call_timer_fn+0x1ac/0x780 [ 89.776393][ C1] ? bitmap_port_test+0x170/0x170 [ 89.781399][ C1] ? msleep_interruptible+0x150/0x150 [ 89.786742][ C1] ? run_timer_softirq+0x6b1/0x1790 [ 89.791921][ C1] ? trace_hardirqs_on+0x67/0x240 [ 89.796917][ C1] ? bitmap_port_test+0x170/0x170 [ 89.801913][ C1] ? bitmap_port_test+0x170/0x170 [ 89.806925][ C1] run_timer_softirq+0x6c3/0x1790 [ 89.811925][ C1] ? add_timer+0x930/0x930 [ 89.816317][ C1] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 89.822446][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 89.827964][ C1] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 89.833920][ C1] ? trace_hardirqs_on+0x67/0x240 [ 89.838921][ C1] __do_softirq+0x262/0x98c [ 89.843396][ C1] ? sched_clock_cpu+0x1b/0x1b0 [ 89.848220][ C1] irq_exit+0x19b/0x1e0 [ 89.852349][ C1] smp_apic_timer_interrupt+0x1a3/0x610 [ 89.857869][ C1] apic_timer_interrupt+0xf/0x20 [ 89.862786][ C1] [ 89.865706][ C1] RIP: 0010:__kasan_check_write+0xf/0x20 [ 89.871327][ C1] Code: 48 89 e5 48 8b 4d 08 e8 af 2a 00 00 5d c3 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 55 89 f6 ba 01 00 00 00 48 89 e5 48 8b 4d 08 8c 2a 00 00 5d c3 66 2e 0f 1f 84 00 00 00 00 00 55 31 d2 be 40 [ 89.890957][ C1] RSP: 0018:ffffc900037e7a40 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 [ 89.899378][ C1] RAX: ffff888089a84180 RBX: 0000000000000012 RCX: ffffffff839e8bd0 [ 89.907329][ C1] RDX: 0000000000000001 RSI: 0000000000000012 RDI: ffff8880a94e3000 [ 89.915277][ C1] RBP: ffffc900037e7a40 R08: ffff888089a84180 R09: ffff888089a84a18 [ 89.923233][ C1] R10: fffffbfff154a5c8 R11: ffffffff8aa52e47 R12: 00000000004a23db [ 89.931179][ C1] R13: ffff8880a94e3000 R14: 00000000004a23ed R15: 00007ffffffff000 [ 89.939139][ C1] ? copyin+0x120/0x150 [ 89.943314][ C1] copyin+0x120/0x150 [ 89.947273][ C1] copy_page_from_iter+0x3d5/0x810 [ 89.952364][ C1] pipe_write+0x953/0x15a0 [ 89.956773][ C1] ? generic_pipe_buf_steal+0x1d0/0x1d0 [ 89.962302][ C1] ? lock_downgrade+0x920/0x920 [ 89.967129][ C1] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 89.972918][ C1] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 89.979137][ C1] ? iov_iter_init+0xee/0x220 [ 89.983795][ C1] new_sync_write+0x4d3/0x770 [ 89.988447][ C1] ? new_sync_read+0x800/0x800 [ 89.993189][ C1] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 89.999422][ C1] ? apparmor_file_permission+0x27/0x30 [ 90.004956][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 90.011176][ C1] ? security_file_permission+0x8f/0x380 [ 90.016789][ C1] __vfs_write+0xe1/0x110 [ 90.021185][ C1] vfs_write+0x268/0x5d0 [ 90.025407][ C1] ksys_write+0x220/0x290 [ 90.029730][ C1] ? __ia32_sys_read+0xb0/0xb0 [ 90.034487][ C1] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 90.039921][ C1] ? do_syscall_64+0x26/0x790 [ 90.044577][ C1] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 90.050616][ C1] ? do_syscall_64+0x26/0x790 [ 90.055269][ C1] __x64_sys_write+0x73/0xb0 [ 90.059834][ C1] do_syscall_64+0xfa/0x790 [ 90.064315][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 90.070286][ C1] RIP: 0033:0x4010e0 [ 90.074157][ C1] Code: 44 89 e7 41 bd 01 00 00 00 e8 6c 00 00 00 eb cc e8 35 35 04 00 0f 1f 44 00 00 83 3d ed 15 2d 00 00 75 14 b8 01 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 54 0c 00 00 c3 48 83 ec 08 e8 ba 01 00 00 [ 90.093735][ C1] RSP: 002b:00007ffd0c4663a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 90.102117][ C1] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004010e0 [ 90.110079][ C1] RDX: 0000000000000012 RSI: 00000000004a23db RDI: 0000000000000001 [ 90.118042][ C1] RBP: 0000000000015b1e R08: 0000000000000000 R09: 0000000000000004 [ 90.125995][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004021c0 [ 90.133940][ C1] R13: 0000000000402250 R14: 0000000000000000 R15: 0000000000000000 [ 90.143597][ C1] Kernel Offset: disabled [ 90.147919][ C1] Rebooting in 86400 seconds..