[ 37.302763] audit: type=1800 audit(1575422480.330:32): pid=7347 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2450 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 38.012935] audit: type=1800 audit(1575422481.120:33): pid=7347 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2465 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.245' (ECDSA) to the list of known hosts. syzkaller login: [ 52.017607] kauditd_printk_skb: 2 callbacks suppressed [ 52.017625] audit: type=1400 audit(1575422495.120:36): avc: denied { map } for pid=7535 comm="syz-executor661" path="/root/syz-executor661716321" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 52.035842] IPVS: ftp: loaded support on port[0] = 21 [ 52.076441] audit: type=1400 audit(1575422495.180:37): avc: denied { create } for pid=7536 comm="syz-executor661" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 52.101410] audit: type=1400 audit(1575422495.180:38): avc: denied { write } for pid=7536 comm="syz-executor661" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 52.125846] audit: type=1400 audit(1575422495.180:39): avc: denied { read } for pid=7536 comm="syz-executor661" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 52.176161] chnl_net:caif_netlink_parms(): no params data found [ 52.207799] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.214670] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.221860] device bridge_slave_0 entered promiscuous mode [ 52.232592] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.238978] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.246091] device bridge_slave_1 entered promiscuous mode [ 52.261085] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 52.270669] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 52.288654] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 52.296361] team0: Port device team_slave_0 added [ 52.301890] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 52.309221] team0: Port device team_slave_1 added [ 52.314700] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 52.322143] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 52.374632] device hsr_slave_0 entered promiscuous mode [ 52.442610] device hsr_slave_1 entered promiscuous mode [ 52.483087] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 52.490378] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 52.505288] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.511700] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.518837] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.525256] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.558370] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 52.565726] 8021q: adding VLAN 0 to HW filter on device bond0 [ 52.574832] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 52.583945] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 52.603887] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.611112] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.619000] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 52.629367] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 52.636080] 8021q: adding VLAN 0 to HW filter on device team0 [ 52.645566] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 52.653606] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.659965] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.673788] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.681776] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.688183] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.698212] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 52.707627] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 52.717431] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 52.731823] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 52.741870] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 52.752964] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 52.759533] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 52.767593] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 52.775887] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 52.788533] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 52.796339] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 52.803936] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 52.816074] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 52.897790] ================================================================== [ 52.905480] BUG: KASAN: slab-out-of-bounds in linear_transfer+0x6de/0x940 [ 52.912405] Read of size 1 at addr ffff88809920dec0 by task syz-executor661/7542 [ 52.919927] [ 52.921682] CPU: 1 PID: 7542 Comm: syz-executor661 Not tainted 4.19.87-syzkaller #0 [ 52.929470] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.938812] Call Trace: [ 52.941389] dump_stack+0x197/0x210 [ 52.945009] ? linear_transfer+0x6de/0x940 [ 52.949231] print_address_description.cold+0x7c/0x20d [ 52.954506] ? linear_transfer+0x6de/0x940 [ 52.958860] kasan_report.cold+0x8c/0x2ba [ 52.963115] check_memory_region+0x123/0x190 [ 52.967526] memcpy+0x24/0x50 [ 52.970627] linear_transfer+0x6de/0x940 [ 52.974770] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.980348] ? snd_pcm_plugin_build_copy.cold+0x9e/0x9e [ 52.985702] ? io_capture_transfer+0x1fd/0x300 [ 52.990273] ? rate_dst_frames+0x2b0/0x2b0 [ 52.994506] snd_pcm_plug_read_transfer+0x197/0x2e0 [ 52.999511] ? snd_pcm_plug_write_transfer+0x3e0/0x3e0 [ 53.004943] ? snd_pcm_format_physical_width+0x75/0x90 [ 53.010453] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 53.015610] ? snd_pcm_plug_client_channels_buf+0x340/0x430 [ 53.021317] snd_pcm_oss_read2+0x1f0/0x3f0 [ 53.025617] ? snd_pcm_oss_read3+0x420/0x420 [ 53.030014] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 53.035552] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 53.041102] snd_pcm_oss_read+0x53a/0x6a0 [ 53.045286] __vfs_read+0x114/0x800 [ 53.048906] ? snd_pcm_oss_read2+0x3f0/0x3f0 [ 53.053313] ? vfs_copy_file_range+0xba0/0xba0 [ 53.057903] ? __inode_security_revalidate+0xda/0x120 [ 53.063081] ? avc_policy_seqno+0xd/0x70 [ 53.067143] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 53.072152] ? security_file_permission+0x89/0x230 [ 53.077094] ? rw_verify_area+0x118/0x360 [ 53.081262] vfs_read+0x194/0x3d0 [ 53.084726] ksys_read+0x14f/0x2d0 [ 53.088259] ? kernel_write+0x120/0x120 [ 53.092253] ? do_syscall_64+0x26/0x620 [ 53.096279] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 53.101656] ? do_syscall_64+0x26/0x620 [ 53.105632] __x64_sys_read+0x73/0xb0 [ 53.109448] do_syscall_64+0xfd/0x620 [ 53.113384] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 53.118590] RIP: 0033:0x447ee9 [ 53.121816] Code: e8 fc 0f 03 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 8b 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 53.140865] RSP: 002b:00007ff53d0b7ce8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 53.148613] RAX: ffffffffffffffda RBX: 00000000006ddc28 RCX: 0000000000447ee9 [ 53.155977] RDX: 0000000000001000 RSI: 0000000020000380 RDI: 0000000000000003 [ 53.163246] RBP: 00000000006ddc20 R08: 0000000000000000 R09: 0000000000000000 [ 53.170513] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006ddc2c [ 53.177867] R13: 00007ffe2f9f1e0f R14: 00007ff53d0b89c0 R15: 0000000000000000 [ 53.185142] [ 53.186755] Allocated by task 7542: [ 53.190377] save_stack+0x45/0xd0 [ 53.193823] kasan_kmalloc+0xce/0xf0 [ 53.197676] __kmalloc_node+0x51/0x80 [ 53.201464] kvmalloc_node+0x68/0x100 [ 53.205262] snd_pcm_plugin_alloc+0x594/0x760 [ 53.209820] snd_pcm_plug_alloc+0x146/0x2f0 [ 53.214152] snd_pcm_oss_change_params_locked+0x210f/0x3750 [ 53.219974] snd_pcm_oss_change_params+0x7b/0xd0 [ 53.224719] snd_pcm_oss_get_active_substream+0x136/0x190 [ 53.230238] snd_pcm_oss_ioctl+0x13df/0x3390 [ 53.234638] do_vfs_ioctl+0xd5f/0x1380 [ 53.238511] ksys_ioctl+0xab/0xd0 [ 53.241963] __x64_sys_ioctl+0x73/0xb0 [ 53.245872] do_syscall_64+0xfd/0x620 [ 53.249674] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 53.254856] [ 53.256466] Freed by task 5341: [ 53.259731] save_stack+0x45/0xd0 [ 53.263172] __kasan_slab_free+0x102/0x150 [ 53.267388] kasan_slab_free+0xe/0x10 [ 53.271170] kfree+0xcf/0x220 [ 53.274261] security_context_to_sid_core.isra.0+0x2e4/0x5b0 [ 53.280096] security_context_to_sid_force+0x3c/0x50 [ 53.285241] selinux_inode_post_setxattr+0x119/0x360 [ 53.290337] security_inode_post_setxattr+0xd1/0x150 [ 53.295426] __vfs_setxattr_noperm+0x343/0x410 [ 53.300000] vfs_setxattr+0xda/0x100 [ 53.303696] setxattr+0x26f/0x380 [ 53.307132] path_setxattr+0x197/0x1b0 [ 53.311001] __x64_sys_lsetxattr+0xc1/0x150 [ 53.315334] do_syscall_64+0xfd/0x620 [ 53.319121] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 53.324309] [ 53.325937] The buggy address belongs to the object at ffff88809920de80 [ 53.325937] which belongs to the cache kmalloc-64 of size 64 [ 53.338408] The buggy address is located 0 bytes to the right of [ 53.338408] 64-byte region [ffff88809920de80, ffff88809920dec0) [ 53.350530] The buggy address belongs to the page: [ 53.355453] page:ffffea0002648340 count:1 mapcount:0 mapping:ffff88812c31c340 index:0x0 [ 53.363592] flags: 0xfffe0000000100(slab) [ 53.367740] raw: 00fffe0000000100 ffffea00023c8fc8 ffff88812c314348 ffff88812c31c340 [ 53.375613] raw: 0000000000000000 ffff88809920d000 0000000100000020 0000000000000000 [ 53.383476] page dumped because: kasan: bad access detected [ 53.389166] [ 53.390774] Memory state around the buggy address: [ 53.395689] ffff88809920dd80: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 53.403037] ffff88809920de00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 53.410380] >ffff88809920de80: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 53.417737] ^ [ 53.423171] ffff88809920df00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 53.430516] ffff88809920df80: 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc [ 53.437856] ================================================================== [ 53.445198] Disabling lock debugging due to kernel taint [ 53.452003] Kernel panic - not syncing: panic_on_warn set ... [ 53.452003] [ 53.459392] CPU: 1 PID: 7542 Comm: syz-executor661 Tainted: G B 4.19.87-syzkaller #0 [ 53.468579] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.478031] Call Trace: [ 53.480613] dump_stack+0x197/0x210 [ 53.484230] ? linear_transfer+0x6de/0x940 [ 53.488466] panic+0x26a/0x50e [ 53.491645] ? __warn_printk+0xf3/0xf3 [ 53.495517] ? linear_transfer+0x6de/0x940 [ 53.499736] ? preempt_schedule+0x4b/0x60 [ 53.503871] ? ___preempt_schedule+0x16/0x18 [ 53.508302] ? trace_hardirqs_on+0x5e/0x220 [ 53.512624] ? linear_transfer+0x6de/0x940 [ 53.516854] kasan_end_report+0x47/0x4f [ 53.520815] kasan_report.cold+0xa9/0x2ba [ 53.524948] check_memory_region+0x123/0x190 [ 53.529345] memcpy+0x24/0x50 [ 53.532446] linear_transfer+0x6de/0x940 [ 53.536520] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 53.542080] ? snd_pcm_plugin_build_copy.cold+0x9e/0x9e [ 53.547461] ? io_capture_transfer+0x1fd/0x300 [ 53.552024] ? rate_dst_frames+0x2b0/0x2b0 [ 53.556299] snd_pcm_plug_read_transfer+0x197/0x2e0 [ 53.561304] ? snd_pcm_plug_write_transfer+0x3e0/0x3e0 [ 53.566565] ? snd_pcm_format_physical_width+0x75/0x90 [ 53.571841] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 53.576860] ? snd_pcm_plug_client_channels_buf+0x340/0x430 [ 53.582589] snd_pcm_oss_read2+0x1f0/0x3f0 [ 53.586826] ? snd_pcm_oss_read3+0x420/0x420 [ 53.591234] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 53.596769] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 53.602418] snd_pcm_oss_read+0x53a/0x6a0 [ 53.606561] __vfs_read+0x114/0x800 [ 53.610176] ? snd_pcm_oss_read2+0x3f0/0x3f0 [ 53.614582] ? vfs_copy_file_range+0xba0/0xba0 [ 53.619152] ? __inode_security_revalidate+0xda/0x120 [ 53.624330] ? avc_policy_seqno+0xd/0x70 [ 53.628394] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 53.633463] ? security_file_permission+0x89/0x230 [ 53.638382] ? rw_verify_area+0x118/0x360 [ 53.642517] vfs_read+0x194/0x3d0 [ 53.645970] ksys_read+0x14f/0x2d0 [ 53.649497] ? kernel_write+0x120/0x120 [ 53.653484] ? do_syscall_64+0x26/0x620 [ 53.657446] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 53.662799] ? do_syscall_64+0x26/0x620 [ 53.666760] __x64_sys_read+0x73/0xb0 [ 53.670562] do_syscall_64+0xfd/0x620 [ 53.674353] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 53.679526] RIP: 0033:0x447ee9 [ 53.682704] Code: e8 fc 0f 03 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 8b 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 53.702115] RSP: 002b:00007ff53d0b7ce8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 53.709814] RAX: ffffffffffffffda RBX: 00000000006ddc28 RCX: 0000000000447ee9 [ 53.717069] RDX: 0000000000001000 RSI: 0000000020000380 RDI: 0000000000000003 [ 53.724326] RBP: 00000000006ddc20 R08: 0000000000000000 R09: 0000000000000000 [ 53.731581] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006ddc2c [ 53.738835] R13: 00007ffe2f9f1e0f R14: 00007ff53d0b89c0 R15: 0000000000000000 [ 53.747726] Kernel Offset: disabled [ 53.751375] Rebooting in 86400 seconds..