INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added 'ci-upstream-kasan-gce-386-3,10.128.15.194' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 39.994836] ================================================================== [ 39.995882] BUG: KASAN: stack-out-of-bounds in xfrm_state_find+0x303d/0x3170 [ 39.996825] Read of size 4 at addr ffff8801bf16f5c0 by task syzkaller156901/2987 [ 39.997811] [ 39.998042] CPU: 0 PID: 2987 Comm: syzkaller156901 Not tainted 4.14.0-rc6+ #55 [ 39.999005] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.000224] Call Trace: [ 40.000581] dump_stack+0x194/0x257 [ 40.001073] ? arch_local_irq_restore+0x53/0x53 [ 40.001695] ? show_regs_print_info+0x65/0x65 [ 40.002302] ? lock_release+0xa40/0xa40 [ 40.002837] ? xfrm_state_find+0x303d/0x3170 [ 40.003427] print_address_description+0x73/0x250 [ 40.004071] ? xfrm_state_find+0x303d/0x3170 [ 40.004659] kasan_report+0x25b/0x340 [ 40.005173] __asan_report_load4_noabort+0x14/0x20 [ 40.005827] xfrm_state_find+0x303d/0x3170 [ 40.006415] ? xfrm_state_afinfo_get_rcu+0x160/0x160 [ 40.007106] ? print_irqtrace_events+0x270/0x270 [ 40.007769] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 40.008466] ? __is_insn_slot_addr+0x1fc/0x330 [ 40.009076] ? check_noncircular+0x20/0x20 [ 40.009656] ? lock_downgrade+0x990/0x990 [ 40.010221] ? __lock_acquire+0x6aa/0x3d50 [ 40.010795] ? is_bpf_text_address+0x7b/0x120 [ 40.011409] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 40.012101] ? depot_save_stack+0x3b5/0x490 [ 40.012680] ? lock_downgrade+0x990/0x990 [ 40.013239] ? do_raw_spin_trylock+0x190/0x190 [ 40.013850] ? is_bpf_text_address+0xa4/0x120 [ 40.014454] ? kernel_text_address+0x102/0x140 [ 40.015086] xfrm_tmpl_resolve+0x309/0xc00 [ 40.019303] ? __xfrm_decode_session+0x100/0x100 [ 40.024024] ? save_stack_trace+0x16/0x20 [ 40.028140] ? save_stack+0x43/0xd0 [ 40.031731] ? kasan_kmalloc+0xad/0xe0 [ 40.035581] ? kasan_slab_alloc+0x12/0x20 [ 40.039698] ? find_held_lock+0x35/0x1d0 [ 40.043734] ? rt_add_uncached_list+0x1b7/0x240 [ 40.048369] ? lock_downgrade+0x990/0x990 [ 40.052490] xfrm_resolve_and_create_bundle+0x186/0x24a0 [ 40.057917] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 40.062898] ? rt_add_uncached_list+0x1b7/0x240 [ 40.067536] ? _raw_spin_unlock_bh+0x30/0x40 [ 40.071911] ? xfrm_tmpl_resolve+0xc00/0xc00 [ 40.076287] ? find_held_lock+0x35/0x1d0 [ 40.080324] ? xfrm_sk_policy_lookup+0x2a6/0x3d0 [ 40.085045] ? lock_downgrade+0x990/0x990 [ 40.089158] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 40.094315] ? lock_release+0xa40/0xa40 [ 40.098260] ? refcount_inc_not_zero+0xfe/0x180 [ 40.102901] ? xfrm_selector_match+0x3b/0xe00 [ 40.107365] ? xfrm_sk_policy_lookup+0x2cf/0x3d0 [ 40.112092] ? xfrm_selector_match+0xe00/0xe00 [ 40.116642] ? ip_route_output_key_hash_rcu+0x604/0x2c20 [ 40.122062] xfrm_lookup+0xf0a/0x2540 [ 40.125827] ? xfrm_lookup+0xf0a/0x2540 [ 40.129769] ? check_noncircular+0x20/0x20 [ 40.133976] ? xfrm_policy_lookup_bytype.constprop.49+0x16f0/0x16f0 [ 40.140347] ? print_irqtrace_events+0x270/0x270 [ 40.145081] ? find_held_lock+0x35/0x1d0 [ 40.149116] ? ip_route_output_key_hash+0x229/0x370 [ 40.154098] ? lock_downgrade+0x990/0x990 [ 40.158218] ? lock_release+0xa40/0xa40 [ 40.162161] ? find_held_lock+0x35/0x1d0 [ 40.166199] ? ip_route_output_key_hash+0x252/0x370 [ 40.171182] ? ip_route_output_key_hash_rcu+0x2c20/0x2c20 [ 40.176682] ? lock_release+0xa40/0xa40 [ 40.180629] xfrm_lookup_route+0x39/0x1a0 [ 40.184745] ip_route_output_flow+0x7c/0xa0 [ 40.189037] udp_sendmsg+0x19b8/0x2cd0 [ 40.192898] ? ip_reply_glue_bits+0xb0/0xb0 [ 40.197196] ? udp_lib_get_port+0x1b30/0x1b30 [ 40.201656] ? lock_downgrade+0x990/0x990 [ 40.205780] ? find_held_lock+0x35/0x1d0 [ 40.209817] ? lock_downgrade+0x990/0x990 [ 40.213939] ? mark_held_locks+0xaf/0x100 [ 40.218059] ? __local_bh_enable_ip+0x9d/0x160 [ 40.222610] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 40.227595] ? check_noncircular+0x20/0x20 [ 40.231793] ? __local_bh_enable_ip+0x9d/0x160 [ 40.236345] udpv6_sendmsg+0x743/0x3380 [ 40.240292] ? check_noncircular+0x20/0x20 [ 40.244499] ? udpv6_setsockopt+0x80/0x80 [ 40.248616] ? reacquire_held_locks+0x1fd/0x3d0 [ 40.253247] ? reacquire_held_locks+0x1fd/0x3d0 [ 40.257886] ? find_held_lock+0x35/0x1d0 [ 40.262319] ? release_sock+0x1d4/0x2a0 [ 40.266265] ? lock_downgrade+0x990/0x990 [ 40.270381] ? lock_downgrade+0x990/0x990 [ 40.274504] ? __local_bh_enable_ip+0x9d/0x160 [ 40.279056] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 40.284036] ? release_sock+0x1d4/0x2a0 [ 40.287977] ? trace_hardirqs_on+0xd/0x10 [ 40.292089] ? __local_bh_enable_ip+0x9d/0x160 [ 40.296640] ? _raw_spin_unlock_bh+0x30/0x40 [ 40.301015] ? release_sock+0x1d4/0x2a0 [ 40.304956] ? __release_sock+0x360/0x360 [ 40.309068] ? udp6_portaddr_hash+0x146/0x2f0 [ 40.313533] ? udp_v6_get_port+0x9c/0xc0 [ 40.317564] inet_sendmsg+0x11f/0x5e0 [ 40.321329] ? inet_sendmsg+0x11f/0x5e0 [ 40.325270] ? __might_sleep+0x95/0x190 [ 40.329210] ? inet_recvmsg+0x5f0/0x5f0 [ 40.333152] ? selinux_socket_sendmsg+0x36/0x40 [ 40.337787] ? security_socket_sendmsg+0x89/0xb0 [ 40.342508] ? inet_recvmsg+0x5f0/0x5f0 [ 40.346449] sock_sendmsg+0xca/0x110 [ 40.350133] SYSC_sendto+0x352/0x5a0 [ 40.353817] ? SYSC_connect+0x470/0x470 [ 40.357766] ? __do_page_fault+0x64c/0xd60 [ 40.361980] ? __handle_mm_fault+0x39c0/0x39c0 [ 40.366527] ? vmacache_find+0x5f/0x280 [ 40.370474] ? up_read+0x1a/0x40 [ 40.373807] ? __do_page_fault+0x3d6/0xd60 [ 40.378018] SyS_sendto+0x40/0x50 [ 40.381438] ? SyS_getpeername+0x30/0x30 [ 40.385466] do_fast_syscall_32+0x3f2/0xf05 [ 40.389758] ? do_int80_syscall_32+0x940/0x940 [ 40.394310] ? kasan_check_read+0x11/0x20 [ 40.398425] ? syscall_return_slowpath+0x510/0x510 [ 40.403321] ? SyS_rt_sigaction+0x94/0x1b0 [ 40.407521] ? SyS_sigprocmask+0x4b0/0x4b0 [ 40.411721] ? SyS_read+0x184/0x220 [ 40.415313] ? retint_user+0x18/0x20 [ 40.418996] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.423812] entry_SYSENTER_compat+0x51/0x60 [ 40.428188] RIP: 0023:0xf7f23c79 [ 40.431521] RSP: 002b:00000000ff9e82dc EFLAGS: 00000282 ORIG_RAX: 0000000000000171 [ 40.439194] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020efcf90 [ 40.446430] RDX: 0000000000000000 RSI: 0000000000004090 RDI: 0000000020efc000 [ 40.453667] RBP: 0000000000000010 R08: 0000000000000000 R09: 0000000000000000 [ 40.460902] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 40.468137] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 40.475388] [ 40.476980] The buggy address belongs to the page: [ 40.481873] page:ffffea0006fc5bc0 count:0 mapcount:0 mapping: (null) index:0x0 [ 40.489979] flags: 0x200000000000000() [ 40.493831] raw: 0200000000000000 0000000000000000 0000000000000000 00000000ffffffff [ 40.501676] raw: 0000000000000000 ffffea0006fc5be0 0000000000000000 0000000000000000 [ 40.509518] page dumped because: kasan: bad access detected [ 40.515189] [ 40.516780] Memory state around the buggy address: [ 40.521672] ffff8801bf16f480: f1 04 f2 f2 f2 f2 f2 f2 f2 00 f2 f2 f2 f2 f2 f2 [ 40.528995] ffff8801bf16f500: f2 f8 f2 f2 f2 f2 f2 f2 f2 00 00 00 00 f2 f2 f2 [ 40.536317] >ffff8801bf16f580: f2 00 00 00 00 00 00 00 f2 f2 f2 f2 f2 00 00 00 [ 40.543638] ^ [ 40.549051] ffff8801bf16f600: 00 00 00 00 00 00 f2 f2 f2 f3 f3 f3 f3 00 00 00 [ 40.556372] ffff8801bf16f680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 40.563693] ================================================================== [ 40.571015] Disabling lock debugging due to kernel taint [ 40.576478] Kernel panic - not syncing: panic_on_warn set ... [ 40.576478] [ 40.583808] CPU: 0 PID: 2987 Comm: syzkaller156901 Tainted: G B 4.14.0-rc6+ #55 [ 40.592348] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.601669] Call Trace: [ 40.604227] dump_stack+0x194/0x257 [ 40.607822] ? arch_local_irq_restore+0x53/0x53 [ 40.612456] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 40.617178] ? xfrm_state_find+0x3000/0x3170 [ 40.621551] panic+0x1e4/0x417 [ 40.624709] ? __warn+0x1d9/0x1d9 [ 40.628131] ? xfrm_state_find+0x303d/0x3170 [ 40.632503] kasan_end_report+0x50/0x50 [ 40.636442] kasan_report+0x144/0x340 [ 40.640211] __asan_report_load4_noabort+0x14/0x20 [ 40.645103] xfrm_state_find+0x303d/0x3170 [ 40.649312] ? xfrm_state_afinfo_get_rcu+0x160/0x160 [ 40.654382] ? print_irqtrace_events+0x270/0x270 [ 40.659110] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 40.664267] ? __is_insn_slot_addr+0x1fc/0x330 [ 40.668811] ? check_noncircular+0x20/0x20 [ 40.673008] ? lock_downgrade+0x990/0x990 [ 40.677125] ? __lock_acquire+0x6aa/0x3d50 [ 40.681328] ? is_bpf_text_address+0x7b/0x120 [ 40.685793] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 40.690949] ? depot_save_stack+0x3b5/0x490 [ 40.695234] ? lock_downgrade+0x990/0x990 [ 40.699347] ? do_raw_spin_trylock+0x190/0x190 [ 40.703894] ? is_bpf_text_address+0xa4/0x120 [ 40.708353] ? kernel_text_address+0x102/0x140 [ 40.712902] xfrm_tmpl_resolve+0x309/0xc00 [ 40.717107] ? __xfrm_decode_session+0x100/0x100 [ 40.721826] ? save_stack_trace+0x16/0x20 [ 40.725938] ? save_stack+0x43/0xd0 [ 40.729530] ? kasan_kmalloc+0xad/0xe0 [ 40.733378] ? kasan_slab_alloc+0x12/0x20 [ 40.737492] ? find_held_lock+0x35/0x1d0 [ 40.741520] ? rt_add_uncached_list+0x1b7/0x240 [ 40.746152] ? lock_downgrade+0x990/0x990 [ 40.750269] xfrm_resolve_and_create_bundle+0x186/0x24a0 [ 40.755690] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 40.760668] ? rt_add_uncached_list+0x1b7/0x240 [ 40.765304] ? _raw_spin_unlock_bh+0x30/0x40 [ 40.769676] ? xfrm_tmpl_resolve+0xc00/0xc00 [ 40.774050] ? find_held_lock+0x35/0x1d0 [ 40.778079] ? xfrm_sk_policy_lookup+0x2a6/0x3d0 [ 40.782797] ? lock_downgrade+0x990/0x990 [ 40.786907] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 40.792063] ? lock_release+0xa40/0xa40 [ 40.796006] ? refcount_inc_not_zero+0xfe/0x180 [ 40.800641] ? xfrm_selector_match+0x3b/0xe00 [ 40.805101] ? xfrm_sk_policy_lookup+0x2cf/0x3d0 [ 40.809822] ? xfrm_selector_match+0xe00/0xe00 [ 40.814366] ? ip_route_output_key_hash_rcu+0x604/0x2c20 [ 40.819782] xfrm_lookup+0xf0a/0x2540 [ 40.823546] ? xfrm_lookup+0xf0a/0x2540 [ 40.827484] ? check_noncircular+0x20/0x20 [ 40.831685] ? xfrm_policy_lookup_bytype.constprop.49+0x16f0/0x16f0 [ 40.838059] ? print_irqtrace_events+0x270/0x270 [ 40.842785] ? find_held_lock+0x35/0x1d0 [ 40.846814] ? ip_route_output_key_hash+0x229/0x370 [ 40.851792] ? lock_downgrade+0x990/0x990 [ 40.855904] ? lock_release+0xa40/0xa40 [ 40.859843] ? find_held_lock+0x35/0x1d0 [ 40.863872] ? ip_route_output_key_hash+0x252/0x370 [ 40.868853] ? ip_route_output_key_hash_rcu+0x2c20/0x2c20 [ 40.874352] ? lock_release+0xa40/0xa40 [ 40.878293] xfrm_lookup_route+0x39/0x1a0 [ 40.882404] ip_route_output_flow+0x7c/0xa0 [ 40.886689] udp_sendmsg+0x19b8/0x2cd0 [ 40.890542] ? ip_reply_glue_bits+0xb0/0xb0 [ 40.894834] ? udp_lib_get_port+0x1b30/0x1b30 [ 40.899292] ? lock_downgrade+0x990/0x990 [ 40.903407] ? find_held_lock+0x35/0x1d0 [ 40.907436] ? lock_downgrade+0x990/0x990 [ 40.911555] ? mark_held_locks+0xaf/0x100 [ 40.915665] ? __local_bh_enable_ip+0x9d/0x160 [ 40.920209] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 40.925190] ? check_noncircular+0x20/0x20 [ 40.929386] ? __local_bh_enable_ip+0x9d/0x160 [ 40.933932] udpv6_sendmsg+0x743/0x3380 [ 40.937871] ? check_noncircular+0x20/0x20 [ 40.942072] ? udpv6_setsockopt+0x80/0x80 [ 40.946185] ? reacquire_held_locks+0x1fd/0x3d0 [ 40.950818] ? reacquire_held_locks+0x1fd/0x3d0 [ 40.955454] ? find_held_lock+0x35/0x1d0 [ 40.959482] ? release_sock+0x1d4/0x2a0 [ 40.963420] ? lock_downgrade+0x990/0x990 [ 40.967531] ? lock_downgrade+0x990/0x990 [ 40.971646] ? __local_bh_enable_ip+0x9d/0x160 [ 40.976193] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 40.981172] ? release_sock+0x1d4/0x2a0 [ 40.985113] ? trace_hardirqs_on+0xd/0x10 [ 40.989225] ? __local_bh_enable_ip+0x9d/0x160 [ 40.993771] ? _raw_spin_unlock_bh+0x30/0x40