====================================================== WARNING: possible circular locking dependency detected 4.15.0+ #293 Not tainted ------------------------------------------------------ syz-executor5/5493 is trying to acquire lock: (sk_lock-AF_INET6){+.+.}, at: [<00000000a07c09d7>] lock_sock include/net/sock.h:1461 [inline] (sk_lock-AF_INET6){+.+.}, at: [<00000000a07c09d7>] do_ipv6_setsockopt.isra.8+0x3c5/0x39d0 net/ipv6/ipv6_sockglue.c:167 but task is already holding lock: (rtnl_mutex){+.+.}, at: [<00000000491ad82d>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (rtnl_mutex){+.+.}: __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0x16f/0x1a80 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 register_netdevice_notifier+0xad/0x860 net/core/dev.c:1607 tee_tg_check+0x1a0/0x280 net/netfilter/xt_TEE.c:106 xt_check_target+0x22c/0x7d0 net/netfilter/x_tables.c:845 check_target net/ipv6/netfilter/ip6_tables.c:533 [inline] find_check_entry.isra.7+0x935/0xcf0 net/ipv6/netfilter/ip6_tables.c:575 translate_table+0xf52/0x1690 net/ipv6/netfilter/ip6_tables.c:744 do_replace net/ipv6/netfilter/ip6_tables.c:1160 [inline] do_ip6t_set_ctl+0x370/0x5f0 net/ipv6/netfilter/ip6_tables.c:1686 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline] nf_setsockopt+0x67/0xc0 net/netfilter/nf_sockopt.c:115 ipv6_setsockopt+0x115/0x150 net/ipv6/ipv6_sockglue.c:928 rawv6_setsockopt+0x4a/0xf0 net/ipv6/raw.c:1060 sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2978 SYSC_setsockopt net/socket.c:1849 [inline] SyS_setsockopt+0x189/0x360 net/socket.c:1828 entry_SYSCALL_64_fastpath+0x29/0xa0 -> #0 (sk_lock-AF_INET6){+.+.}: lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:3920 lock_sock_nested+0xc2/0x110 net/core/sock.c:2780 lock_sock include/net/sock.h:1461 [inline] do_ipv6_setsockopt.isra.8+0x3c5/0x39d0 net/ipv6/ipv6_sockglue.c:167 ipv6_setsockopt+0xd7/0x150 net/ipv6/ipv6_sockglue.c:922 udpv6_setsockopt+0x45/0x80 net/ipv6/udp.c:1422 sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2978 SYSC_setsockopt net/socket.c:1849 [inline] SyS_setsockopt+0x189/0x360 net/socket.c:1828 entry_SYSCALL_64_fastpath+0x29/0xa0 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(rtnl_mutex); lock(sk_lock-AF_INET6); lock(rtnl_mutex); lock(sk_lock-AF_INET6); *** DEADLOCK *** 1 lock held by syz-executor5/5493: #0: (rtnl_mutex){+.+.}, at: [<00000000491ad82d>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 stack backtrace: CPU: 1 PID: 5493 Comm: syz-executor5 Not tainted 4.15.0+ #293 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 print_circular_bug.isra.38+0x2cd/0x2dc kernel/locking/lockdep.c:1223 check_prev_add kernel/locking/lockdep.c:1863 [inline] check_prevs_add kernel/locking/lockdep.c:1976 [inline] validate_chain kernel/locking/lockdep.c:2417 [inline] __lock_acquire+0x30a8/0x3e00 kernel/locking/lockdep.c:3431 lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:3920 lock_sock_nested+0xc2/0x110 net/core/sock.c:2780 lock_sock include/net/sock.h:1461 [inline] do_ipv6_setsockopt.isra.8+0x3c5/0x39d0 net/ipv6/ipv6_sockglue.c:167 ipv6_setsockopt+0xd7/0x150 net/ipv6/ipv6_sockglue.c:922 udpv6_setsockopt+0x45/0x80 net/ipv6/udp.c:1422 sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2978 SYSC_setsockopt net/socket.c:1849 [inline] SyS_setsockopt+0x189/0x360 net/socket.c:1828 entry_SYSCALL_64_fastpath+0x29/0xa0 RIP: 0033:0x453299 RSP: 002b:00007ff832e6dc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000453299 RDX: 0000000000000001 RSI: 0000000000000029 RDI: 0000000000000013 RBP: 0000000000000059 R08: 0000000000000004 R09: 0000000000000000 R10: 0000000020bd9000 R11: 0000000000000212 R12: 00000000006ef8f8 R13: 00000000ffffffff R14: 00007ff832e6e6d4 R15: 0000000000000000 binder: 5507:5521 BC_CLEAR_DEATH_NOTIFICATION death notification cookie mismatch 0000000000000000 != 0000000000000003 sctp: [Deprecated]: syz-executor5 (pid 5514) Use of int in max_burst socket option. Use struct sctp_assoc_value instead binder: 5507:5521 ERROR: BC_REGISTER_LOOPER called after BC_ENTER_LOOPER binder: 5521 RLIMIT_NICE not set sctp: [Deprecated]: syz-executor5 (pid 5514) Use of int in max_burst socket option. Use struct sctp_assoc_value instead binder: 5507:5533 BC_REQUEST_DEATH_NOTIFICATION invalid ref 0 binder: 5507:5521 BC_CLEAR_DEATH_NOTIFICATION invalid ref 0 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 1 CPU: 1 PID: 6044 Comm: syz-executor1 Not tainted 4.15.0+ #293 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x8c0/0xa40 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2955 [inline] prepare_alloc_pages mm/page_alloc.c:4194 [inline] __alloc_pages_nodemask+0x338/0xd80 mm/page_alloc.c:4233 alloc_pages_current+0xb6/0x1e0 mm/mempolicy.c:2055 alloc_pages include/linux/gfp.h:492 [inline] skb_page_frag_refill+0x358/0x5f0 net/core/sock.c:2211 tun_build_skb.isra.50+0x2f0/0x1810 drivers/net/tun.c:1630 tun_get_user+0x17d0/0x3940 drivers/net/tun.c:1800 tun_chr_write_iter+0xb9/0x160 drivers/net/tun.c:1986 call_write_iter include/linux/fs.h:1781 [inline] do_iter_readv_writev+0x55c/0x830 fs/read_write.c:653 do_iter_write+0x154/0x540 fs/read_write.c:932 vfs_writev+0x18a/0x340 fs/read_write.c:977 do_writev+0xfc/0x2a0 fs/read_write.c:1012 SYSC_writev fs/read_write.c:1085 [inline] SyS_writev+0x27/0x30 fs/read_write.c:1082 entry_SYSCALL_64_fastpath+0x29/0xa0 RIP: 0033:0x453171 RSP: 002b:00007f9ffb381b80 EFLAGS: 00000293 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 00007f9ffb381aa0 RCX: 0000000000453171 RDX: 0000000000000001 RSI: 00007f9ffb381bd0 RDI: 0000000000000012 RBP: 00007f9ffb381a90 R08: 0000000000000000 R09: 0000000000000000 R10: 000000000000003e R11: 0000000000000293 R12: 00000000004b8096 R13: 00007f9ffb381bc8 R14: 00000000004b8096 R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 1 CPU: 1 PID: 6086 Comm: syz-executor1 Not tainted 4.15.0+ #293 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x8c0/0xa40 lib/fault-inject.c:149 should_failslab+0xec/0x120 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:418 [inline] slab_alloc mm/slab.c:3364 [inline] kmem_cache_alloc+0x47/0x760 mm/slab.c:3538 __build_skb+0x9d/0x450 net/core/skbuff.c:281 build_skb+0x6f/0x2a0 net/core/skbuff.c:312 tun_build_skb.isra.50+0x9cb/0x1810 drivers/net/tun.c:1690 tun_get_user+0x17d0/0x3940 drivers/net/tun.c:1800 tun_chr_write_iter+0xb9/0x160 drivers/net/tun.c:1986 call_write_iter include/linux/fs.h:1781 [inline] do_iter_readv_writev+0x55c/0x830 fs/read_write.c:653 do_iter_write+0x154/0x540 fs/read_write.c:932 vfs_writev+0x18a/0x340 fs/read_write.c:977 do_writev+0xfc/0x2a0 fs/read_write.c:1012 SYSC_writev fs/read_write.c:1085 [inline] SyS_writev+0x27/0x30 fs/read_write.c:1082 entry_SYSCALL_64_fastpath+0x29/0xa0 RIP: 0033:0x453171 RSP: 002b:00007f9ffb381b80 EFLAGS: 00000293 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 00007f9ffb381aa0 RCX: 0000000000453171 RDX: 0000000000000001 RSI: 00007f9ffb381bd0 RDI: 0000000000000012 RBP: 00007f9ffb381a90 R08: 0000000000000000 R09: 0000000000000000 R10: 000000000000003e R11: 0000000000000293 R12: 00000000004b8096 R13: 00007f9ffb381bc8 R14: 00000000004b8096 R15: 0000000000000000 netlink: 40 bytes leftover after parsing attributes in process `syz-executor7'. handle_userfault: 55 callbacks suppressed FAULT_FLAG_ALLOW_RETRY missing 30 FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 1 PID: 6415 Comm: syz-executor4 Not tainted 4.15.0+ #293 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 handle_userfault+0xbd9/0x2500 fs/userfaultfd.c:430 do_anonymous_page mm/memory.c:3153 [inline] handle_pte_fault mm/memory.c:3967 [inline] __handle_mm_fault+0x32a3/0x3ce0 mm/memory.c:4093 handle_mm_fault+0x38f/0x930 mm/memory.c:4130 __do_page_fault+0x5c9/0xc90 arch/x86/mm/fault.c:1426 do_page_fault+0xee/0x720 arch/x86/mm/fault.c:1501 page_fault+0x2c/0x60 arch/x86/entry/entry_64.S:1261 RIP: 0010:copy_user_generic_unrolled+0x86/0xc0 arch/x86/lib/copy_user_64.S:65 RSP: 0018:ffff8801b805fe20 EFLAGS: 00010202 RAX: ffffed003700bfde RBX: 0000000020012000 RCX: 0000000000000002 RDX: 0000000000000000 RSI: 0000000020012000 RDI: ffff8801b805fee0 RBP: ffff8801b805fe50 R08: ffffed003700bfde R09: ffffed003700bfde R10: 0000000000000002 R11: ffffed003700bfdd R12: 0000000000000010 R13: ffff8801b805fee0 R14: 00007ffffffff000 R15: 0000000020012010 copy_from_user include/linux/uaccess.h:147 [inline] SYSC_select fs/select.c:686 [inline] SyS_select+0xaf/0x230 fs/select.c:678 entry_SYSCALL_64_fastpath+0x29/0xa0 RIP: 0033:0x453299 RSP: 002b:00007fa3a588ec58 EFLAGS: 00000212 ORIG_RAX: 0000000000000017 RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000453299 RDX: 0000000020002fc0 RSI: 0000000020011000 RDI: 0000000000000040 RBP: 00000000000003d9 R08: 0000000020012000 R09: 0000000000000000 R10: 0000000020005000 R11: 0000000000000212 R12: 00000000006f4cf8 R13: 00000000ffffffff R14: 00007fa3a588f6d4 R15: 0000000000000015 CPU: 0 PID: 6406 Comm: syz-executor4 Not tainted 4.15.0+ #293 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 handle_userfault+0xbd9/0x2500 fs/userfaultfd.c:430 do_anonymous_page mm/memory.c:3153 [inline] handle_pte_fault mm/memory.c:3967 [inline] __handle_mm_fault+0x32a3/0x3ce0 mm/memory.c:4093 handle_mm_fault+0x38f/0x930 mm/memory.c:4130 __do_page_fault+0x5c9/0xc90 arch/x86/mm/fault.c:1426 do_page_fault+0xee/0x720 arch/x86/mm/fault.c:1501 page_fault+0x2c/0x60 arch/x86/entry/entry_64.S:1261 RIP: 0010:copy_user_generic_unrolled+0x86/0xc0 arch/x86/lib/copy_user_64.S:65 RSP: 0018:ffff8801c1e77bc8 EFLAGS: 00010202 RAX: ffffed00383cefa4 RBX: 0000000020013fc0 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000020013fc0 RDI: ffff8801c1e77d18 RBP: ffff8801c1e77bf8 R08: ffffed00383cefa4 R09: ffffed00383cefa4 R10: 0000000000000001 R11: ffffed00383cefa3 R12: 0000000000000008 R13: ffff8801c1e77d18 R14: 00007ffffffff000 R15: 0000000020013fc8 copy_from_user include/linux/uaccess.h:147 [inline] get_fd_set fs/select.c:367 [inline] core_sys_select+0x427/0x960 fs/select.c:648 SYSC_select fs/select.c:696 [inline] SyS_select+0x194/0x230 fs/select.c:678 entry_SYSCALL_64_fastpath+0x29/0xa0 RIP: 0033:0x453299 RSP: 002b:00007fa3a58afc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000017 RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000453299 RDX: 0000000020003000 RSI: 0000000020002000 RDI: 0000000000000040 RBP: 000000000000003c R08: 0000000020002ff0 R09: 0000000000000000 R10: 0000000020013fc0 R11: 0000000000000212 R12: 00000000006ef640 R13: 00000000ffffffff R14: 00007fa3a58b06d4 R15: 0000000000000000 audit: type=1400 audit(1517631828.575:85): avc: denied { prog_load } for pid=6434 comm="syz-executor4" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=bpf permissive=1 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 6629 Comm: syz-executor6 Not tainted 4.15.0+ #293 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 netlink: 'syz-executor7': attribute type 1 has an invalid length. Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x8c0/0xa40 lib/fault-inject.c:149 should_failslab+0xec/0x120 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:418 [inline] slab_alloc_node mm/slab.c:3285 [inline] kmem_cache_alloc_node+0x56/0x760 mm/slab.c:3628 __alloc_skb+0xf1/0x780 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:983 [inline] alloc_skb_with_frags+0x10d/0x750 net/core/skbuff.c:5151 sock_alloc_send_pskb+0x787/0x9b0 net/core/sock.c:2088 sock_alloc_send_skb+0x32/0x40 net/core/sock.c:2105 __ip6_append_data.isra.44+0x1c38/0x3390 net/ipv6/ip6_output.c:1409 ip6_make_skb+0x386/0x5e0 net/ipv6/ip6_output.c:1757 udpv6_sendmsg+0x27fc/0x3400 net/ipv6/udp.c:1310 inet_sendmsg+0x11f/0x5e0 net/ipv4/af_inet.c:764 sock_sendmsg_nosec net/socket.c:630 [inline] sock_sendmsg+0xca/0x110 net/socket.c:640 SYSC_sendto+0x361/0x5c0 net/socket.c:1747 SyS_sendto+0x40/0x50 net/socket.c:1715 entry_SYSCALL_64_fastpath+0x29/0xa0 RIP: 0033:0x453299 RSP: 002b:00007fc21da8dc58 EFLAGS: 00000212 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fc21da8daa0 RCX: 0000000000453299 RDX: 0000000000000000 RSI: 00000000205d3ffe RDI: 0000000000000014 RBP: 00007fc21da8da90 R08: 00000000206b1000 R09: 000000000000001c R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b8096 R13: 00007fc21da8dbc8 R14: 00000000004b8096 R15: 0000000000000000 audit: type=1400 audit(1517631830.329:86): avc: denied { map } for pid=6780 comm="syz-executor4" path=2F6D656D66643A202864656C6574656429 dev="tmpfs" ino=17505 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:tmpfs_t:s0 tclass=file permissive=1 device eql entered promiscuous mode FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 6846 Comm: syz-executor2 Not tainted 4.15.0+ #293 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x8c0/0xa40 lib/fault-inject.c:149 should_failslab+0xec/0x120 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:418 [inline] slab_alloc mm/slab.c:3364 [inline] kmem_cache_alloc+0x47/0x760 mm/slab.c:3538 dst_alloc+0x11f/0x1a0 net/core/dst.c:104 __ip6_dst_alloc+0x35/0x90 net/ipv6/route.c:361 ip6_dst_alloc+0x29/0xb0 net/ipv6/route.c:376 ip6_route_info_create+0x8c6/0x32a0 net/ipv6/route.c:2634 ip6_route_add+0xa2/0x190 net/ipv6/route.c:2852 addrconf_add_mroute+0x360/0x4b0 net/ipv6/addrconf.c:2377 addrconf_add_dev+0xf8/0x180 net/ipv6/addrconf.c:2395 inet6_addr_add+0xa8/0x390 net/ipv6/addrconf.c:2839 addrconf_add_ifaddr+0x145/0x1d0 net/ipv6/addrconf.c:2955 inet6_ioctl+0x111/0x1e0 net/ipv6/af_inet6.c:526 sock_do_ioctl+0xef/0x390 net/socket.c:958 sock_ioctl+0x36b/0x610 net/socket.c:1081 vfs_ioctl fs/ioctl.c:46 [inline] do_vfs_ioctl+0x1b1/0x1520 fs/ioctl.c:686 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692 entry_SYSCALL_64_fastpath+0x29/0xa0 RIP: 0033:0x453299 RSP: 002b:00007ff9b465cc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007ff9b465caa0 RCX: 0000000000453299 RDX: 0000000020000000 RSI: 0000000000008916 RDI: 0000000000000014 RBP: 00007ff9b465ca90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b8096 R13: 00007ff9b465cbc8 R14: 00000000004b8096 R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 6879 Comm: syz-executor2 Not tainted 4.15.0+ #293 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x8c0/0xa40 lib/fault-inject.c:149 should_failslab+0xec/0x120 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:418 [inline] slab_alloc mm/slab.c:3364 [inline] kmem_cache_alloc_trace+0x4b/0x750 mm/slab.c:3604 kmalloc include/linux/slab.h:499 [inline] kzalloc include/linux/slab.h:688 [inline] ipv6_add_addr+0x2e6/0x1990 net/ipv6/addrconf.c:1045 inet6_addr_add+0x196/0x390 net/ipv6/addrconf.c:2871 addrconf_add_ifaddr+0x145/0x1d0 net/ipv6/addrconf.c:2955 inet6_ioctl+0x111/0x1e0 net/ipv6/af_inet6.c:526 sock_do_ioctl+0xef/0x390 net/socket.c:958 sock_ioctl+0x36b/0x610 net/socket.c:1081 vfs_ioctl fs/ioctl.c:46 [inline] do_vfs_ioctl+0x1b1/0x1520 fs/ioctl.c:686 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692 entry_SYSCALL_64_fastpath+0x29/0xa0 RIP: 0033:0x453299 RSP: 002b:00007ff9b465cc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007ff9b465caa0 RCX: 0000000000453299 RDX: 0000000020000000 RSI: 0000000000008916 RDI: 0000000000000014 RBP: 00007ff9b465ca90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b8096 R13: 00007ff9b465cbc8 R14: 00000000004b8096 R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 6885 Comm: syz-executor0 Not tainted 4.15.0+ #293 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x8c0/0xa40 lib/fault-inject.c:149 should_failslab+0xec/0x120 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:418 [inline] slab_alloc mm/slab.c:3364 [inline] kmem_cache_alloc+0x47/0x760 mm/slab.c:3538 dst_alloc+0x11f/0x1a0 net/core/dst.c:104 __ip6_dst_alloc+0x35/0x90 net/ipv6/route.c:361 ip6_dst_alloc+0x29/0xb0 net/ipv6/route.c:376 ip6_route_info_create+0x8c6/0x32a0 net/ipv6/route.c:2634 ip6_route_add+0xa2/0x190 net/ipv6/route.c:2852 addrconf_add_mroute+0x360/0x4b0 net/ipv6/addrconf.c:2377 addrconf_add_dev+0xf8/0x180 net/ipv6/addrconf.c:2395 inet6_addr_add+0xa8/0x390 net/ipv6/addrconf.c:2839 addrconf_add_ifaddr+0x145/0x1d0 net/ipv6/addrconf.c:2955 inet6_ioctl+0x111/0x1e0 net/ipv6/af_inet6.c:526 sock_do_ioctl+0xef/0x390 net/socket.c:958 sock_ioctl+0x36b/0x610 net/socket.c:1081 vfs_ioctl fs/ioctl.c:46 [inline] do_vfs_ioctl+0x1b1/0x1520 fs/ioctl.c:686 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692 entry_SYSCALL_64_fastpath+0x29/0xa0 RIP: 0033:0x453299 RSP: 002b:00007f9cb714dc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f9cb714daa0 RCX: 0000000000453299 RDX: 0000000020000000 RSI: 0000000000008916 RDI: 0000000000000014 RBP: 00007f9cb714da90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b8096 R13: 00007f9cb714dbc8 R14: 00000000004b8096 R15: 0000000000000000 QAT: Invalid ioctl audit: type=1400 audit(1517631831.931:87): avc: denied { map } for pid=6952 comm="syz-executor4" path="/dev/binder0" dev="devtmpfs" ino=1075 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:device_t:s0 tclass=chr_file permissive=1 QAT: Invalid ioctl binder: 6957 RLIMIT_NICE not set audit: type=1400 audit(1517631831.995:88): avc: denied { call } for pid=6952 comm="syz-executor4" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=binder permissive=1 binder: 6957 RLIMIT_NICE not set binder: 6952:6980 got reply transaction with no transaction stack binder: 6952:6980 transaction failed 29201/-71, size 0-8 line 2757 QAT: Invalid ioctl binder: release 6952:6957 transaction 4 in, still active binder: send failed reply for transaction 4 to 6952:6973 binder: undelivered TRANSACTION_COMPLETE binder: 6973 RLIMIT_NICE not set binder: undelivered TRANSACTION_ERROR: 29189 binder: 6952:6973 got reply transaction with no transaction stack binder: 6952:6973 transaction failed 29201/-71, size 0-8 line 2757 binder: release 6952:6957 transaction 7 out, still active binder: undelivered TRANSACTION_COMPLETE binder: send failed reply for transaction 7, target dead binder: 6998 RLIMIT_NICE not set binder: 6998 RLIMIT_NICE not set binder: 6998 RLIMIT_NICE not set binder: release 6995:7010 transaction 10 out, still active binder: undelivered TRANSACTION_COMPLETE binder_alloc: 6995: binder_alloc_buf size 9007199254741000 failed, no address space binder_alloc: allocated: 8 (num: 1 largest: 8), free: 8184 (num: 1 largest: 8184) binder: 6995:6998 transaction failed 29201/-28, size 0-8 line 2957 binder: send failed reply for transaction 10, target dead binder: 7061 RLIMIT_NICE not set binder: 7061 RLIMIT_NICE not set binder: 7053:7071 got reply transaction with bad transaction stack, transaction 13 has target 7053:7061 binder: 7053:7071 transaction failed 29201/-71, size 0-8 line 2772 binder: release 7053:7061 transaction 13 in, still active binder: send failed reply for transaction 13 to 7053:7071 binder: undelivered TRANSACTION_ERROR: 29189 binder: 7087 RLIMIT_NICE not set binder: 7087 RLIMIT_NICE not set binder: 7086:7103 got reply transaction with bad transaction stack, transaction 16 has target 7086:7087 binder: 7086:7103 transaction failed 29201/-71, size 0-8 line 2772