[ 93.769139][ T27] audit: type=1800 audit(1579811193.741:26): pid=9619 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. [ 94.873895][ T27] kauditd_printk_skb: 2 callbacks suppressed [ 94.873906][ T27] audit: type=1800 audit(1579811194.881:29): pid=9619 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 [ 94.900286][ T27] audit: type=1800 audit(1579811194.881:30): pid=9619 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 '10.128.0.247' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 105.644277][ T9773] ================================================================== [ 105.652529][ T9773] BUG: KASAN: slab-out-of-bounds in bitmap_port_ext_cleanup+0xe6/0x2a0 [ 105.660751][ T9773] Read of size 8 at addr ffff88809fe9e800 by task syz-executor893/9773 [ 105.668961][ T9773] [ 105.671281][ T9773] CPU: 0 PID: 9773 Comm: syz-executor893 Not tainted 5.5.0-rc7-syzkaller #0 [ 105.679970][ T9773] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 105.690129][ T9773] Call Trace: [ 105.693418][ T9773] dump_stack+0x197/0x210 [ 105.697783][ T9773] ? bitmap_port_ext_cleanup+0xe6/0x2a0 [ 105.703350][ T9773] print_address_description.constprop.0.cold+0xd4/0x30b [ 105.710373][ T9773] ? bitmap_port_ext_cleanup+0xe6/0x2a0 [ 105.715946][ T9773] ? bitmap_port_ext_cleanup+0xe6/0x2a0 [ 105.721507][ T9773] __kasan_report.cold+0x1b/0x41 [ 105.726439][ T9773] ? bitmap_port_ext_cleanup+0xe6/0x2a0 [ 105.731979][ T9773] kasan_report+0x12/0x20 [ 105.736303][ T9773] check_memory_region+0x134/0x1a0 [ 105.741411][ T9773] __kasan_check_read+0x11/0x20 [ 105.746291][ T9773] bitmap_port_ext_cleanup+0xe6/0x2a0 [ 105.751735][ T9773] bitmap_port_destroy+0x180/0x1d0 [ 105.756879][ T9773] ip_set_create+0xe47/0x1500 [ 105.761555][ T9773] ? ip_set_destroy+0xb70/0xb70 [ 105.766433][ T9773] ? ip_set_destroy+0xb70/0xb70 [ 105.771324][ T9773] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 105.776338][ T9773] ? nfnetlink_bind+0x2c0/0x2c0 [ 105.781208][ T9773] ? __kasan_check_read+0x11/0x20 [ 105.786287][ T9773] ? __lock_acquire+0x8a0/0x4a00 [ 105.791321][ T9773] ? save_stack+0x5c/0x90 [ 105.795794][ T9773] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 105.802028][ T9773] ? apparmor_capable+0x497/0x900 [ 105.807066][ T9773] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 105.813344][ T9773] ? __kasan_check_read+0x11/0x20 [ 105.818367][ T9773] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 105.823816][ T9773] netlink_rcv_skb+0x177/0x450 [ 105.828577][ T9773] ? nfnetlink_bind+0x2c0/0x2c0 [ 105.833421][ T9773] ? netlink_ack+0xb50/0xb50 [ 105.838007][ T9773] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 105.844244][ T9773] ? ns_capable_common+0x93/0x100 [ 105.849254][ T9773] ? ns_capable+0x20/0x30 [ 105.853567][ T9773] ? __netlink_ns_capable+0x104/0x140 [ 105.858925][ T9773] nfnetlink_rcv+0x1ba/0x460 [ 105.863506][ T9773] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 105.868974][ T9773] ? netlink_deliver_tap+0x24a/0xbe0 [ 105.874252][ T9773] ? __kasan_check_write+0x14/0x20 [ 105.879398][ T9773] netlink_unicast+0x58c/0x7d0 [ 105.884147][ T9773] ? netlink_attachskb+0x870/0x870 [ 105.889285][ T9773] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 105.894990][ T9773] ? __check_object_size+0x3d/0x437 [ 105.900300][ T9773] netlink_sendmsg+0x91c/0xea0 [ 105.905056][ T9773] ? netlink_unicast+0x7d0/0x7d0 [ 105.909983][ T9773] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 105.915574][ T9773] ? apparmor_socket_sendmsg+0x2a/0x30 [ 105.921026][ T9773] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 105.927258][ T9773] ? security_socket_sendmsg+0x8d/0xc0 [ 105.932708][ T9773] ? netlink_unicast+0x7d0/0x7d0 [ 105.937628][ T9773] sock_sendmsg+0xd7/0x130 [ 105.942031][ T9773] ____sys_sendmsg+0x753/0x880 [ 105.946782][ T9773] ? kernel_sendmsg+0x50/0x50 [ 105.951459][ T9773] ? mark_held_locks+0xa4/0xf0 [ 105.956217][ T9773] ? do_huge_pmd_anonymous_page+0x1463/0x1a50 [ 105.962270][ T9773] ? __handle_mm_fault+0x3145/0x3cc0 [ 105.967549][ T9773] ? do_huge_pmd_anonymous_page+0x1463/0x1a50 [ 105.973612][ T9773] ___sys_sendmsg+0x100/0x170 [ 105.978288][ T9773] ? do_huge_pmd_anonymous_page+0xceb/0x1a50 [ 105.984267][ T9773] ? sendmsg_copy_msghdr+0x70/0x70 [ 105.989382][ T9773] ? __do_page_fault+0x56a/0xd80 [ 105.994357][ T9773] ? find_held_lock+0x35/0x130 [ 105.999120][ T9773] ? __do_page_fault+0x56a/0xd80 [ 106.004050][ T9773] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 106.010319][ T9773] ? __fget_light+0x1a9/0x230 [ 106.014980][ T9773] ? __fdget+0x1b/0x20 [ 106.019043][ T9773] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 106.025268][ T9773] __sys_sendmsg+0x105/0x1d0 [ 106.029856][ T9773] ? __sys_sendmsg_sock+0xc0/0xc0 [ 106.034876][ T9773] ? down_read_non_owner+0x490/0x490 [ 106.040216][ T9773] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 106.045772][ T9773] ? do_syscall_64+0x26/0x790 [ 106.050438][ T9773] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 106.056493][ T9773] ? do_syscall_64+0x26/0x790 [ 106.061215][ T9773] __x64_sys_sendmsg+0x78/0xb0 [ 106.065971][ T9773] do_syscall_64+0xfa/0x790 [ 106.070474][ T9773] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 106.076360][ T9773] RIP: 0033:0x441399 [ 106.080243][ T9773] Code: e8 fc ab 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 9b 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 106.099994][ T9773] RSP: 002b:00007ffd45791328 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 106.108408][ T9773] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441399 [ 106.116377][ T9773] RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000003 [ 106.124372][ T9773] RBP: 0000000000019c77 R08: 00000000004002c8 R09: 00000000004002c8 [ 106.132346][ T9773] R10: 0000000000000004 R11: 0000000000000246 R12: 00000000004021c0 [ 106.140365][ T9773] R13: 0000000000402250 R14: 0000000000000000 R15: 0000000000000000 [ 106.148406][ T9773] [ 106.150733][ T9773] Allocated by task 9773: [ 106.155073][ T9773] save_stack+0x23/0x90 [ 106.159235][ T9773] __kasan_kmalloc.constprop.0+0xcf/0xe0 [ 106.164853][ T9773] kasan_kmalloc+0x9/0x10 [ 106.169240][ T9773] __kmalloc+0x163/0x770 [ 106.173477][ T9773] ip_set_alloc+0x38/0x5e [ 106.177839][ T9773] bitmap_port_create+0x3dc/0x7c0 [ 106.183011][ T9773] ip_set_create+0x6f1/0x1500 [ 106.187709][ T9773] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 106.192636][ T9773] netlink_rcv_skb+0x177/0x450 [ 106.197401][ T9773] nfnetlink_rcv+0x1ba/0x460 [ 106.202036][ T9773] netlink_unicast+0x58c/0x7d0 [ 106.206783][ T9773] netlink_sendmsg+0x91c/0xea0 [ 106.211547][ T9773] sock_sendmsg+0xd7/0x130 [ 106.215995][ T9773] ____sys_sendmsg+0x753/0x880 [ 106.220757][ T9773] ___sys_sendmsg+0x100/0x170 [ 106.225418][ T9773] __sys_sendmsg+0x105/0x1d0 [ 106.230019][ T9773] __x64_sys_sendmsg+0x78/0xb0 [ 106.234773][ T9773] do_syscall_64+0xfa/0x790 [ 106.239313][ T9773] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 106.245199][ T9773] [ 106.247509][ T9773] Freed by task 9499: [ 106.251479][ T9773] save_stack+0x23/0x90 [ 106.255625][ T9773] __kasan_slab_free+0x102/0x150 [ 106.260553][ T9773] kasan_slab_free+0xe/0x10 [ 106.265042][ T9773] kfree+0x10a/0x2c0 [ 106.268928][ T9773] single_release+0x95/0xc0 [ 106.273423][ T9773] __fput+0x2ff/0x890 [ 106.277389][ T9773] ____fput+0x16/0x20 [ 106.281360][ T9773] task_work_run+0x145/0x1c0 [ 106.285942][ T9773] exit_to_usermode_loop+0x316/0x380 [ 106.291211][ T9773] do_syscall_64+0x676/0x790 [ 106.295792][ T9773] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 106.301667][ T9773] [ 106.303981][ T9773] The buggy address belongs to the object at ffff88809fe9e800 [ 106.303981][ T9773] which belongs to the cache kmalloc-32 of size 32 [ 106.317839][ T9773] The buggy address is located 0 bytes inside of [ 106.317839][ T9773] 32-byte region [ffff88809fe9e800, ffff88809fe9e820) [ 106.330828][ T9773] The buggy address belongs to the page: [ 106.336447][ T9773] page:ffffea00027fa780 refcount:1 mapcount:0 mapping:ffff8880aa4001c0 index:0xffff88809fe9efc1 [ 106.346838][ T9773] raw: 00fffe0000000200 ffffea0002697648 ffffea00027d78c8 ffff8880aa4001c0 [ 106.355404][ T9773] raw: ffff88809fe9efc1 ffff88809fe9e000 000000010000002b 0000000000000000 [ 106.363977][ T9773] page dumped because: kasan: bad access detected [ 106.370456][ T9773] [ 106.372771][ T9773] Memory state around the buggy address: [ 106.378382][ T9773] ffff88809fe9e700: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc [ 106.386423][ T9773] ffff88809fe9e780: 00 00 fc fc fc fc fc fc fb fb fb fb fc fc fc fc [ 106.394468][ T9773] >ffff88809fe9e800: 04 fc fc fc fc fc fc fc fb fb fb fb fc fc fc fc [ 106.402519][ T9773] ^ [ 106.406580][ T9773] ffff88809fe9e880: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc [ 106.414629][ T9773] ffff88809fe9e900: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc [ 106.422704][ T9773] ================================================================== [ 106.430749][ T9773] Disabling lock debugging due to kernel taint [ 106.439108][ T9773] Kernel panic - not syncing: panic_on_warn set ... [ 106.445708][ T9773] CPU: 0 PID: 9773 Comm: syz-executor893 Tainted: G B 5.5.0-rc7-syzkaller #0 [ 106.455742][ T9773] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 106.465790][ T9773] Call Trace: [ 106.469079][ T9773] dump_stack+0x197/0x210 [ 106.473398][ T9773] panic+0x2e3/0x75c [ 106.477272][ T9773] ? add_taint.cold+0x16/0x16 [ 106.481929][ T9773] ? bitmap_port_ext_cleanup+0xe6/0x2a0 [ 106.487454][ T9773] ? preempt_schedule+0x4b/0x60 [ 106.492283][ T9773] ? ___preempt_schedule+0x16/0x18 [ 106.497387][ T9773] ? trace_hardirqs_on+0x5e/0x240 [ 106.502390][ T9773] ? bitmap_port_ext_cleanup+0xe6/0x2a0 [ 106.507935][ T9773] end_report+0x47/0x4f [ 106.512072][ T9773] ? bitmap_port_ext_cleanup+0xe6/0x2a0 [ 106.517603][ T9773] __kasan_report.cold+0xe/0x41 [ 106.522451][ T9773] ? bitmap_port_ext_cleanup+0xe6/0x2a0 [ 106.527990][ T9773] kasan_report+0x12/0x20 [ 106.532312][ T9773] check_memory_region+0x134/0x1a0 [ 106.537421][ T9773] __kasan_check_read+0x11/0x20 [ 106.542257][ T9773] bitmap_port_ext_cleanup+0xe6/0x2a0 [ 106.547609][ T9773] bitmap_port_destroy+0x180/0x1d0 [ 106.552709][ T9773] ip_set_create+0xe47/0x1500 [ 106.557366][ T9773] ? ip_set_destroy+0xb70/0xb70 [ 106.562205][ T9773] ? ip_set_destroy+0xb70/0xb70 [ 106.567034][ T9773] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 106.571952][ T9773] ? nfnetlink_bind+0x2c0/0x2c0 [ 106.576791][ T9773] ? __kasan_check_read+0x11/0x20 [ 106.581800][ T9773] ? __lock_acquire+0x8a0/0x4a00 [ 106.586758][ T9773] ? save_stack+0x5c/0x90 [ 106.591110][ T9773] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 106.597330][ T9773] ? apparmor_capable+0x497/0x900 [ 106.602374][ T9773] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 106.608597][ T9773] ? __kasan_check_read+0x11/0x20 [ 106.613659][ T9773] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 106.619098][ T9773] netlink_rcv_skb+0x177/0x450 [ 106.623850][ T9773] ? nfnetlink_bind+0x2c0/0x2c0 [ 106.628684][ T9773] ? netlink_ack+0xb50/0xb50 [ 106.633254][ T9773] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 106.639487][ T9773] ? ns_capable_common+0x93/0x100 [ 106.644494][ T9773] ? ns_capable+0x20/0x30 [ 106.648832][ T9773] ? __netlink_ns_capable+0x104/0x140 [ 106.654189][ T9773] nfnetlink_rcv+0x1ba/0x460 [ 106.658757][ T9773] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 106.664206][ T9773] ? netlink_deliver_tap+0x24a/0xbe0 [ 106.669480][ T9773] ? __kasan_check_write+0x14/0x20 [ 106.674577][ T9773] netlink_unicast+0x58c/0x7d0 [ 106.679319][ T9773] ? netlink_attachskb+0x870/0x870 [ 106.684407][ T9773] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 106.690128][ T9773] ? __check_object_size+0x3d/0x437 [ 106.695310][ T9773] netlink_sendmsg+0x91c/0xea0 [ 106.700053][ T9773] ? netlink_unicast+0x7d0/0x7d0 [ 106.704971][ T9773] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 106.710495][ T9773] ? apparmor_socket_sendmsg+0x2a/0x30 [ 106.715933][ T9773] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 106.722155][ T9773] ? security_socket_sendmsg+0x8d/0xc0 [ 106.727591][ T9773] ? netlink_unicast+0x7d0/0x7d0 [ 106.732510][ T9773] sock_sendmsg+0xd7/0x130 [ 106.736920][ T9773] ____sys_sendmsg+0x753/0x880 [ 106.741661][ T9773] ? kernel_sendmsg+0x50/0x50 [ 106.746318][ T9773] ? mark_held_locks+0xa4/0xf0 [ 106.751061][ T9773] ? do_huge_pmd_anonymous_page+0x1463/0x1a50 [ 106.757103][ T9773] ? __handle_mm_fault+0x3145/0x3cc0 [ 106.762365][ T9773] ? do_huge_pmd_anonymous_page+0x1463/0x1a50 [ 106.768418][ T9773] ___sys_sendmsg+0x100/0x170 [ 106.773076][ T9773] ? do_huge_pmd_anonymous_page+0xceb/0x1a50 [ 106.779037][ T9773] ? sendmsg_copy_msghdr+0x70/0x70 [ 106.784129][ T9773] ? __do_page_fault+0x56a/0xd80 [ 106.789048][ T9773] ? find_held_lock+0x35/0x130 [ 106.793792][ T9773] ? __do_page_fault+0x56a/0xd80 [ 106.798731][ T9773] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 106.804947][ T9773] ? __fget_light+0x1a9/0x230 [ 106.809604][ T9773] ? __fdget+0x1b/0x20 [ 106.813652][ T9773] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 106.819888][ T9773] __sys_sendmsg+0x105/0x1d0 [ 106.824475][ T9773] ? __sys_sendmsg_sock+0xc0/0xc0 [ 106.829480][ T9773] ? down_read_non_owner+0x490/0x490 [ 106.834746][ T9773] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 106.840198][ T9773] ? do_syscall_64+0x26/0x790 [ 106.844862][ T9773] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 106.850919][ T9773] ? do_syscall_64+0x26/0x790 [ 106.855627][ T9773] __x64_sys_sendmsg+0x78/0xb0 [ 106.860384][ T9773] do_syscall_64+0xfa/0x790 [ 106.864867][ T9773] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 106.870741][ T9773] RIP: 0033:0x441399 [ 106.874617][ T9773] Code: e8 fc ab 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 9b 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 106.894198][ T9773] RSP: 002b:00007ffd45791328 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 106.902595][ T9773] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441399 [ 106.910562][ T9773] RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000003 [ 106.918521][ T9773] RBP: 0000000000019c77 R08: 00000000004002c8 R09: 00000000004002c8 [ 106.926484][ T9773] R10: 0000000000000004 R11: 0000000000000246 R12: 00000000004021c0 [ 106.934450][ T9773] R13: 0000000000402250 R14: 0000000000000000 R15: 0000000000000000 [ 106.943770][ T9773] Kernel Offset: disabled [ 106.948105][ T9773] Rebooting in 86400 seconds..