[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 33.386011] random: sshd: uninitialized urandom read (32 bytes read) [ 33.748528] kauditd_printk_skb: 9 callbacks suppressed [ 33.748536] audit: type=1400 audit(1567549657.116:35): avc: denied { map } for pid=6806 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 [ 33.802579] random: sshd: uninitialized urandom read (32 bytes read) [ 34.311508] random: sshd: uninitialized urandom read (32 bytes read) [ 34.493668] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.159' (ECDSA) to the list of known hosts. [ 40.006053] random: sshd: uninitialized urandom read (32 bytes read) 2019/09/03 22:27:43 parsed 1 programs [ 40.182007] audit: type=1400 audit(1567549663.556:36): avc: denied { map } for pid=6819 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 40.237811] audit: type=1400 audit(1567549663.606:37): avc: denied { map } for pid=6819 comm="syz-execprog" path="/sys/kernel/debug/kcov" dev="debugfs" ino=20 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:debugfs_t:s0 tclass=file permissive=1 [ 40.946905] random: cc1: uninitialized urandom read (8 bytes read) 2019/09/03 22:27:45 executed programs: 0 [ 42.120883] IPVS: ftp: loaded support on port[0] = 21 [ 43.022931] chnl_net:caif_netlink_parms(): no params data found [ 43.051915] bridge0: port 1(bridge_slave_0) entered blocking state [ 43.058491] bridge0: port 1(bridge_slave_0) entered disabled state [ 43.065598] device bridge_slave_0 entered promiscuous mode [ 43.072569] bridge0: port 2(bridge_slave_1) entered blocking state [ 43.078934] bridge0: port 2(bridge_slave_1) entered disabled state [ 43.085902] device bridge_slave_1 entered promiscuous mode [ 43.099132] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 43.108079] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 43.123844] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 43.131245] team0: Port device team_slave_0 added [ 43.136573] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 43.143866] team0: Port device team_slave_1 added [ 43.148977] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 43.156237] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 43.221729] device hsr_slave_0 entered promiscuous mode [ 43.280307] device hsr_slave_1 entered promiscuous mode [ 43.360505] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 43.367368] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 43.379852] bridge0: port 2(bridge_slave_1) entered blocking state [ 43.386314] bridge0: port 2(bridge_slave_1) entered forwarding state [ 43.393365] bridge0: port 1(bridge_slave_0) entered blocking state [ 43.399958] bridge0: port 1(bridge_slave_0) entered forwarding state [ 43.425609] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 43.433453] 8021q: adding VLAN 0 to HW filter on device bond0 [ 43.441566] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 43.449350] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 43.468278] bridge0: port 1(bridge_slave_0) entered disabled state [ 43.475542] bridge0: port 2(bridge_slave_1) entered disabled state [ 43.486470] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 43.494238] 8021q: adding VLAN 0 to HW filter on device team0 [ 43.502763] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 43.510704] bridge0: port 1(bridge_slave_0) entered blocking state [ 43.517044] bridge0: port 1(bridge_slave_0) entered forwarding state [ 43.525614] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 43.533784] bridge0: port 2(bridge_slave_1) entered blocking state [ 43.540140] bridge0: port 2(bridge_slave_1) entered forwarding state [ 43.553303] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 43.560914] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 43.569311] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 43.580757] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 43.590767] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 43.602045] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 43.608052] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 43.615398] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 43.627269] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 43.636428] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 44.021155] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 44.970687] audit: type=1400 audit(1567549668.346:38): avc: denied { map } for pid=6849 comm="syz-executor.0" path="/root/syzkaller-testdir659999206/syzkaller.1OsPGk/0/file0/mem" dev="devtmpfs" ino=13686 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:memory_device_t:s0 tclass=chr_file permissive=1 [ 44.971608] FAULT_INJECTION: forcing a failure. [ 44.971608] name failslab, interval 1, probability 0, space 0, times 1 [ 45.011957] CPU: 1 PID: 6849 Comm: syz-executor.0 Not tainted 4.14.141 #37 [ 45.018965] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.028303] Call Trace: [ 45.030882] dump_stack+0x138/0x197 [ 45.034496] should_fail.cold+0x10f/0x159 [ 45.038633] should_failslab+0xdb/0x130 [ 45.042594] kmem_cache_alloc_trace+0x2e9/0x790 [ 45.047240] ? pat_pagerange_is_ram+0x90/0xf0 [ 45.051717] ? __init_cache_modes+0x240/0x240 [ 45.056202] reserve_memtype+0x164/0x640 [ 45.060259] ? pat_init+0x420/0x420 [ 45.063874] ? __init_cache_modes+0x240/0x240 [ 45.068352] reserve_pfn_range+0x11c/0x390 [ 45.072571] ? arch_io_reserve_memtype_wc+0x80/0x80 [ 45.077569] ? copy_process.part.0+0x444f/0x6a00 [ 45.082307] ? SyS_clone+0x37/0x50 [ 45.085831] ? do_syscall_64+0x1e8/0x640 [ 45.089876] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 45.095220] track_pfn_copy+0x14a/0x190 [ 45.099172] ? reserve_pfn_range+0x390/0x390 [ 45.103562] ? trace_hardirqs_on+0x10/0x10 [ 45.107779] copy_page_range+0x1255/0x1bd0 [ 45.112002] ? save_trace+0x290/0x290 [ 45.115795] ? copy_process.part.0+0x41de/0x6a00 [ 45.121493] ? find_held_lock+0x35/0x130 [ 45.125534] ? vma_compute_subtree_gap+0x190/0x1f0 [ 45.130442] ? vma_gap_callbacks_rotate+0x62/0x80 [ 45.135266] ? __rb_insert_augmented+0x22f/0xdf0 [ 45.140028] ? __pmd_alloc+0x410/0x410 [ 45.143901] ? __vma_link_rb+0x247/0x340 [ 45.147945] copy_process.part.0+0x4764/0x6a00 [ 45.152525] ? __cleanup_sighand+0x50/0x50 [ 45.156739] ? vfs_write+0x25f/0x500 [ 45.160441] _do_fork+0x19e/0xce0 [ 45.163883] ? fork_idle+0x280/0x280 [ 45.167583] ? vfs_write+0x104/0x500 [ 45.171284] ? SyS_write+0x15e/0x230 [ 45.174977] SyS_clone+0x37/0x50 [ 45.178320] ? sys_vfork+0x30/0x30 [ 45.181839] do_syscall_64+0x1e8/0x640 [ 45.185714] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 45.190548] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 45.195734] RIP: 0033:0x459879 [ 45.198908] RSP: 002b:00007ffcd7e20ea8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 [ 45.206593] RAX: ffffffffffffffda RBX: 00007ffcd7e20ec0 RCX: 0000000000459879 [ 45.214191] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 45.221438] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 45.228695] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000fb0914 [ 45.235943] R13: 00000000004bfd46 R14: 00000000004d1af8 R15: 0000000000000004 [ 45.246149] ------------[ cut here ]------------ [ 45.250911] WARNING: CPU: 1 PID: 6849 at arch/x86/mm/pat.c:1020 untrack_pfn+0x1dc/0x220 [ 45.259031] Kernel panic - not syncing: panic_on_warn set ... [ 45.259031] [ 45.266375] CPU: 1 PID: 6849 Comm: syz-executor.0 Not tainted 4.14.141 #37 [ 45.273372] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.282714] Call Trace: [ 45.285291] dump_stack+0x138/0x197 [ 45.288900] panic+0x1f2/0x426 [ 45.292075] ? add_taint.cold+0x16/0x16 [ 45.296040] ? untrack_pfn+0x1dc/0x220 [ 45.299911] ? untrack_pfn+0x1dc/0x220 [ 45.303782] __warn.cold+0x2f/0x36 [ 45.307333] ? ist_end_non_atomic+0x10/0x10 [ 45.311642] ? untrack_pfn+0x1dc/0x220 [ 45.315515] report_bug+0x216/0x254 [ 45.319128] do_error_trap+0x1bb/0x310 [ 45.322997] ? math_error+0x360/0x360 [ 45.326792] ? lock_downgrade+0x6e0/0x6e0 [ 45.330919] ? unmap_page_range+0xbe7/0x1770 [ 45.335311] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 45.340143] do_invalid_op+0x1b/0x20 [ 45.343847] invalid_op+0x1b/0x40 [ 45.347356] RIP: 0010:untrack_pfn+0x1dc/0x220 [ 45.351828] RSP: 0018:ffff8880a0e1f948 EFLAGS: 00010297 [ 45.357170] RAX: ffff8880a50bc2c0 RBX: ffff88808358c318 RCX: 0000000000000000 [ 45.364419] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 [ 45.371670] RBP: ffff8880a0e1f9d8 R08: ffff8880a50bc2c0 R09: 0000000000000000 [ 45.378921] R10: 0000000000000000 R11: ffff8880a50bc2c0 R12: 1ffff110141c3f2a [ 45.386169] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880a0e1f9b0 [ 45.393433] ? untrack_pfn+0x1dc/0x220 [ 45.397306] ? track_pfn_insert+0x150/0x150 [ 45.401614] ? vm_normal_page_pmd+0x360/0x360 [ 45.406098] ? uprobe_munmap+0x94/0x210 [ 45.410060] unmap_single_vma+0x182/0x2c0 [ 45.414217] unmap_vmas+0xac/0x170 [ 45.417740] exit_mmap+0x285/0x4e0 [ 45.421269] ? SyS_munmap+0x30/0x30 [ 45.424885] ? kmem_cache_free+0x244/0x2b0 [ 45.429099] ? __khugepaged_exit+0xcf/0x3d0 [ 45.433402] ? lock_downgrade+0x6e0/0x6e0 [ 45.437532] mmput+0x114/0x440 [ 45.440715] copy_process.part.0+0x4743/0x6a00 [ 45.445304] ? __cleanup_sighand+0x50/0x50 [ 45.449517] ? vfs_write+0x25f/0x500 [ 45.453216] _do_fork+0x19e/0xce0 [ 45.456665] ? fork_idle+0x280/0x280 [ 45.460541] ? vfs_write+0x104/0x500 [ 45.464245] ? SyS_write+0x15e/0x230 [ 45.467939] SyS_clone+0x37/0x50 [ 45.471282] ? sys_vfork+0x30/0x30 [ 45.474802] do_syscall_64+0x1e8/0x640 [ 45.478668] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 45.483493] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 45.488664] RIP: 0033:0x459879 [ 45.491833] RSP: 002b:00007ffcd7e20ea8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 [ 45.499519] RAX: ffffffffffffffda RBX: 00007ffcd7e20ec0 RCX: 0000000000459879 [ 45.506770] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 45.514024] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 45.521273] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000fb0914 [ 45.528525] R13: 00000000004bfd46 R14: 00000000004d1af8 R15: 0000000000000004 [ 45.537116] Kernel Offset: disabled [ 45.540788] Rebooting in 86400 seconds..