SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=19322 comm=syz-executor.1 ====================================================== WARNING: possible circular locking dependency detected 4.14.155-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.0/19363 is trying to acquire lock: (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock){+...}, at: [] spin_lock include/linux/spinlock.h:317 [inline] (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock){+...}, at: [] __dev_xmit_skb net/core/dev.c:3202 [inline] (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock){+...}, at: [] __dev_queue_xmit+0x1f0f/0x25e0 net/core/dev.c:3493 kobject: 'loop0' (ffff888057c1ae60): kobject_uevent_env but task is already holding lock: (_xmit_ETHER#2){+.-.}, at: [] spin_lock include/linux/spinlock.h:317 [inline] (_xmit_ETHER#2){+.-.}, at: [] __netif_tx_lock include/linux/netdevice.h:3530 [inline] (_xmit_ETHER#2){+.-.}, at: [] sch_direct_xmit+0x1fc/0x550 net/sched/sch_generic.c:184 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (_xmit_ETHER#2){+.-.}: lock_acquire+0x16f/0x430 kernel/locking/lockdep.c:3994 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:152 kobject: 'loop0' (ffff888057c1ae60): fill_kobj_path: path = '/devices/virtual/block/loop0' spin_lock include/linux/spinlock.h:317 [inline] __netif_tx_lock include/linux/netdevice.h:3530 [inline] sch_direct_xmit+0x1fc/0x550 net/sched/sch_generic.c:184 __dev_xmit_skb net/core/dev.c:3218 [inline] __dev_queue_xmit+0x1b6e/0x25e0 net/core/dev.c:3493 dev_queue_xmit+0x18/0x20 net/core/dev.c:3558 neigh_hh_output include/net/neighbour.h:490 [inline] neigh_output include/net/neighbour.h:498 [inline] ip6_finish_output2+0x10bd/0x21b0 net/ipv6/ip6_output.c:120 ip6_finish_output+0x4f4/0xb50 net/ipv6/ip6_output.c:154 NF_HOOK_COND include/linux/netfilter.h:239 [inline] ip6_output+0x20f/0x6d0 net/ipv6/ip6_output.c:171 dst_output include/net/dst.h:462 [inline] ip6_local_out+0x97/0x170 net/ipv6/output_core.c:178 ip6_send_skb+0xa2/0x330 net/ipv6/ip6_output.c:1688 kobject: 'loop3' (ffff8880a4a65320): kobject_uevent_env udp_v6_send_skb+0x5c5/0xee0 net/ipv6/udp.c:1081 udpv6_sendmsg+0x1e38/0x2560 net/ipv6/udp.c:1353 kobject: 'loop3' (ffff8880a4a65320): fill_kobj_path: path = '/devices/virtual/block/loop3' inet_sendmsg+0x122/0x500 net/ipv4/af_inet.c:762 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xce/0x110 net/socket.c:656 ___sys_sendmsg+0x349/0x840 net/socket.c:2062 __sys_sendmmsg+0x152/0x3a0 net/socket.c:2152 SYSC_sendmmsg net/socket.c:2183 [inline] SyS_sendmmsg+0x35/0x60 net/socket.c:2178 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 -> #0 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock){+...}: check_prev_add kernel/locking/lockdep.c:1901 [inline] check_prevs_add kernel/locking/lockdep.c:2018 [inline] validate_chain kernel/locking/lockdep.c:2460 [inline] __lock_acquire+0x2cb3/0x4620 kernel/locking/lockdep.c:3487 lock_acquire+0x16f/0x430 kernel/locking/lockdep.c:3994 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:152 spin_lock include/linux/spinlock.h:317 [inline] __dev_xmit_skb net/core/dev.c:3202 [inline] __dev_queue_xmit+0x1f0f/0x25e0 net/core/dev.c:3493 dev_queue_xmit+0x18/0x20 net/core/dev.c:3558 neigh_resolve_output net/core/neighbour.c:1364 [inline] neigh_resolve_output+0x4f6/0x8a0 net/core/neighbour.c:1344 neigh_output include/net/neighbour.h:500 [inline] ip6_finish_output2+0x9ab/0x21b0 net/ipv6/ip6_output.c:120 ip6_finish_output+0x4f4/0xb50 net/ipv6/ip6_output.c:154 NF_HOOK_COND include/linux/netfilter.h:239 [inline] ip6_output+0x20f/0x6d0 net/ipv6/ip6_output.c:171 dst_output include/net/dst.h:462 [inline] NF_HOOK include/linux/netfilter.h:250 [inline] ndisc_send_skb+0xb56/0x11e0 net/ipv6/ndisc.c:483 ndisc_send_ns+0x360/0x7e0 net/ipv6/ndisc.c:625 ndisc_solicit+0x2a7/0x420 net/ipv6/ndisc.c:717 neigh_probe+0xc6/0x100 net/core/neighbour.c:908 __neigh_event_send+0x2e4/0xe80 net/core/neighbour.c:1066 neigh_event_send include/net/neighbour.h:435 [inline] neigh_resolve_output+0x520/0x8a0 net/core/neighbour.c:1348 neigh_output include/net/neighbour.h:500 [inline] ip6_finish_output2+0x9ab/0x21b0 net/ipv6/ip6_output.c:120 ip6_finish_output+0x4f4/0xb50 net/ipv6/ip6_output.c:154 NF_HOOK_COND include/linux/netfilter.h:239 [inline] ip6_output+0x20f/0x6d0 net/ipv6/ip6_output.c:171 dst_output include/net/dst.h:462 [inline] ip6_local_out+0x97/0x170 net/ipv6/output_core.c:178 ip6_send_skb+0xa2/0x330 net/ipv6/ip6_output.c:1688 ip6_push_pending_frames+0xbb/0xe0 net/ipv6/ip6_output.c:1708 icmpv6_push_pending_frames+0x33d/0x530 net/ipv6/icmp.c:289 icmp6_send+0x17ed/0x1ea0 net/ipv6/icmp.c:588 icmpv6_send+0xac/0x1b0 net/ipv6/ip6_icmp.c:43 ip6_link_failure+0x29/0x420 net/ipv6/route.c:1438 dst_link_failure include/net/dst.h:445 [inline] ip_tunnel_xmit+0x26c8/0x3189 net/ipv4/ip_tunnel.c:801 __gre_xmit+0x4eb/0x890 net/ipv4/ip_gre.c:441 erspan_xmit net/ipv4/ip_gre.c:750 [inline] erspan_xmit+0x441/0x1200 net/ipv4/ip_gre.c:725 __netdev_start_xmit include/linux/netdevice.h:4033 [inline] netdev_start_xmit include/linux/netdevice.h:4042 [inline] xmit_one net/core/dev.c:3009 [inline] dev_hard_start_xmit+0x18c/0x8b0 net/core/dev.c:3025 sch_direct_xmit+0x27a/0x550 net/sched/sch_generic.c:186 __dev_xmit_skb net/core/dev.c:3218 [inline] __dev_queue_xmit+0x1b6e/0x25e0 net/core/dev.c:3493 dev_queue_xmit+0x18/0x20 net/core/dev.c:3558 neigh_resolve_output net/core/neighbour.c:1364 [inline] neigh_resolve_output+0x4f6/0x8a0 net/core/neighbour.c:1344 neigh_output include/net/neighbour.h:500 [inline] ip6_finish_output2+0x9ab/0x21b0 net/ipv6/ip6_output.c:120 ip6_finish_output+0x4f4/0xb50 net/ipv6/ip6_output.c:154 NF_HOOK_COND include/linux/netfilter.h:239 [inline] ip6_output+0x20f/0x6d0 net/ipv6/ip6_output.c:171 dst_output include/net/dst.h:462 [inline] NF_HOOK include/linux/netfilter.h:250 [inline] rawv6_send_hdrinc net/ipv6/raw.c:689 [inline] rawv6_sendmsg+0x19cc/0x2d70 net/ipv6/raw.c:948 inet_sendmsg+0x122/0x500 net/ipv4/af_inet.c:762 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xce/0x110 net/socket.c:656 sock_write_iter+0x21d/0x390 net/socket.c:925 call_write_iter include/linux/fs.h:1777 [inline] aio_write+0x2c7/0x4f0 fs/aio.c:1553 io_submit_one fs/aio.c:1641 [inline] do_io_submit+0x996/0x13f0 fs/aio.c:1709 SYSC_io_submit fs/aio.c:1734 [inline] SyS_io_submit+0x28/0x30 fs/aio.c:1731 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(_xmit_ETHER#2); lock(dev->qdisc_tx_busylock ?: &qdisc_tx_busylock); lock(_xmit_ETHER#2); lock(dev->qdisc_tx_busylock ?: &qdisc_tx_busylock); *** DEADLOCK *** 12 locks held by syz-executor.0/19363: #0: (rcu_read_lock){....}, at: [] l3mdev_l3_out include/net/l3mdev.h:172 [inline] #0: (rcu_read_lock){....}, at: [] l3mdev_ip6_out include/net/l3mdev.h:193 [inline] #0: (rcu_read_lock){....}, at: [] rawv6_send_hdrinc net/ipv6/raw.c:679 [inline] #0: (rcu_read_lock){....}, at: [] rawv6_sendmsg+0x17d3/0x2d70 net/ipv6/raw.c:948 #1: (rcu_read_lock_bh){....}, at: [] lwtunnel_xmit_redirect include/net/lwtunnel.h:92 [inline] #1: (rcu_read_lock_bh){....}, at: [] ip6_finish_output2+0x1e5/0x21b0 net/ipv6/ip6_output.c:106 #2: (rcu_read_lock_bh){....}, at: [] __dev_queue_xmit+0x1e2/0x25e0 net/core/dev.c:3459 #3: (dev->qdisc_running_key ?: &qdisc_running_key){+...}, at: [] dev_queue_xmit+0x18/0x20 net/core/dev.c:3558 #4: (_xmit_ETHER#2){+.-.}, at: [] spin_lock include/linux/spinlock.h:317 [inline] #4: (_xmit_ETHER#2){+.-.}, at: [] __netif_tx_lock include/linux/netdevice.h:3530 [inline] #4: (_xmit_ETHER#2){+.-.}, at: [] sch_direct_xmit+0x1fc/0x550 net/sched/sch_generic.c:184 #5: (rcu_read_lock){....}, at: [] icmpv6_send+0x0/0x1b0 net/ipv6/ip6_icmp.c:31 #6: (k-slock-AF_INET6){+.-.}, at: [] spin_trylock include/linux/spinlock.h:327 [inline] #6: (k-slock-AF_INET6){+.-.}, at: [] icmpv6_xmit_lock net/ipv6/icmp.c:119 [inline] #6: (k-slock-AF_INET6){+.-.}, at: [] icmp6_send+0xd9a/0x1ea0 net/ipv6/icmp.c:533 #7: (rcu_read_lock){....}, at: [] icmp6_send+0x1301/0x1ea0 net/ipv6/icmp.c:568 #8: (rcu_read_lock_bh){....}, at: [] lwtunnel_xmit_redirect include/net/lwtunnel.h:92 [inline] #8: (rcu_read_lock_bh){....}, at: [] ip6_finish_output2+0x1e5/0x21b0 net/ipv6/ip6_output.c:106 #9: (rcu_read_lock){....}, at: [] ip6_nd_hdr net/ipv6/ndisc.c:441 [inline] #9: (rcu_read_lock){....}, at: [] ndisc_send_skb+0x67c/0x11e0 net/ipv6/ndisc.c:477 #10: (rcu_read_lock_bh){....}, at: [] lwtunnel_xmit_redirect include/net/lwtunnel.h:92 [inline] #10: (rcu_read_lock_bh){....}, at: [] ip6_finish_output2+0x1e5/0x21b0 net/ipv6/ip6_output.c:106 #11: (rcu_read_lock_bh){....}, at: [] __dev_queue_xmit+0x1e2/0x25e0 net/core/dev.c:3459 stack backtrace: CPU: 1 PID: 19363 Comm: syz-executor.0 Not tainted 4.14.155-syzkaller #0 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+0x142/0x197 lib/dump_stack.c:58 print_circular_bug.isra.0.cold+0x1cc/0x28f kernel/locking/lockdep.c:1258 check_prev_add kernel/locking/lockdep.c:1901 [inline] check_prevs_add kernel/locking/lockdep.c:2018 [inline] validate_chain kernel/locking/lockdep.c:2460 [inline] __lock_acquire+0x2cb3/0x4620 kernel/locking/lockdep.c:3487 lock_acquire+0x16f/0x430 kernel/locking/lockdep.c:3994 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:152 spin_lock include/linux/spinlock.h:317 [inline] __dev_xmit_skb net/core/dev.c:3202 [inline] __dev_queue_xmit+0x1f0f/0x25e0 net/core/dev.c:3493 dev_queue_xmit+0x18/0x20 net/core/dev.c:3558 neigh_resolve_output net/core/neighbour.c:1364 [inline] neigh_resolve_output+0x4f6/0x8a0 net/core/neighbour.c:1344 neigh_output include/net/neighbour.h:500 [inline] ip6_finish_output2+0x9ab/0x21b0 net/ipv6/ip6_output.c:120 ip6_finish_output+0x4f4/0xb50 net/ipv6/ip6_output.c:154 NF_HOOK_COND include/linux/netfilter.h:239 [inline] ip6_output+0x20f/0x6d0 net/ipv6/ip6_output.c:171 dst_output include/net/dst.h:462 [inline] NF_HOOK include/linux/netfilter.h:250 [inline] ndisc_send_skb+0xb56/0x11e0 net/ipv6/ndisc.c:483 ndisc_send_ns+0x360/0x7e0 net/ipv6/ndisc.c:625 ndisc_solicit+0x2a7/0x420 net/ipv6/ndisc.c:717 neigh_probe+0xc6/0x100 net/core/neighbour.c:908 __neigh_event_send+0x2e4/0xe80 net/core/neighbour.c:1066 neigh_event_send include/net/neighbour.h:435 [inline] neigh_resolve_output+0x520/0x8a0 net/core/neighbour.c:1348 neigh_output include/net/neighbour.h:500 [inline] ip6_finish_output2+0x9ab/0x21b0 net/ipv6/ip6_output.c:120 ip6_finish_output+0x4f4/0xb50 net/ipv6/ip6_output.c:154 NF_HOOK_COND include/linux/netfilter.h:239 [inline] ip6_output+0x20f/0x6d0 net/ipv6/ip6_output.c:171 dst_output include/net/dst.h:462 [inline] ip6_local_out+0x97/0x170 net/ipv6/output_core.c:178 ip6_send_skb+0xa2/0x330 net/ipv6/ip6_output.c:1688 ip6_push_pending_frames+0xbb/0xe0 net/ipv6/ip6_output.c:1708 icmpv6_push_pending_frames+0x33d/0x530 net/ipv6/icmp.c:289 icmp6_send+0x17ed/0x1ea0 net/ipv6/icmp.c:588 icmpv6_send+0xac/0x1b0 net/ipv6/ip6_icmp.c:43 ip6_link_failure+0x29/0x420 net/ipv6/route.c:1438 dst_link_failure include/net/dst.h:445 [inline] ip_tunnel_xmit+0x26c8/0x3189 net/ipv4/ip_tunnel.c:801 __gre_xmit+0x4eb/0x890 net/ipv4/ip_gre.c:441 erspan_xmit net/ipv4/ip_gre.c:750 [inline] erspan_xmit+0x441/0x1200 net/ipv4/ip_gre.c:725 __netdev_start_xmit include/linux/netdevice.h:4033 [inline] netdev_start_xmit include/linux/netdevice.h:4042 [inline] xmit_one net/core/dev.c:3009 [inline] dev_hard_start_xmit+0x18c/0x8b0 net/core/dev.c:3025 sch_direct_xmit+0x27a/0x550 net/sched/sch_generic.c:186 __dev_xmit_skb net/core/dev.c:3218 [inline] __dev_queue_xmit+0x1b6e/0x25e0 net/core/dev.c:3493 dev_queue_xmit+0x18/0x20 net/core/dev.c:3558 neigh_resolve_output net/core/neighbour.c:1364 [inline] neigh_resolve_output+0x4f6/0x8a0 net/core/neighbour.c:1344 neigh_output include/net/neighbour.h:500 [inline] ip6_finish_output2+0x9ab/0x21b0 net/ipv6/ip6_output.c:120 ip6_finish_output+0x4f4/0xb50 net/ipv6/ip6_output.c:154 NF_HOOK_COND include/linux/netfilter.h:239 [inline] ip6_output+0x20f/0x6d0 net/ipv6/ip6_output.c:171 dst_output include/net/dst.h:462 [inline] NF_HOOK include/linux/netfilter.h:250 [inline] rawv6_send_hdrinc net/ipv6/raw.c:689 [inline] rawv6_sendmsg+0x19cc/0x2d70 net/ipv6/raw.c:948 inet_sendmsg+0x122/0x500 net/ipv4/af_inet.c:762 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xce/0x110 net/socket.c:656 sock_write_iter+0x21d/0x390 net/socket.c:925 call_write_iter include/linux/fs.h:1777 [inline] aio_write+0x2c7/0x4f0 fs/aio.c:1553 io_submit_one fs/aio.c:1641 [inline] do_io_submit+0x996/0x13f0 fs/aio.c:1709 SYSC_io_submit fs/aio.c:1734 [inline] SyS_io_submit+0x28/0x30 fs/aio.c:1731 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a639 RSP: 002b:00007fe841a14c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a639 RDX: 0000000020356ff0 RSI: 0000000000000001 RDI: 00007fe8419f4000 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe841a156d4 R13: 00000000004c1d27 R14: 00000000004d5940 R15: 00000000ffffffff SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=19322 comm=syz-executor.1 kobject: 'loop3' (ffff8880a4a65320): kobject_uevent_env SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=19322 comm=syz-executor.1 kobject: 'loop3' (ffff8880a4a65320): fill_kobj_path: path = '/devices/virtual/block/loop3' SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=19322 comm=syz-executor.1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=19384 comm=syz-executor.1 syz-executor.0 (19363) used greatest stack depth: 21544 bytes left SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=19322 comm=syz-executor.1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=19384 comm=syz-executor.1 IPv6: ADDRCONF(NETDEV_CHANGE): nr0: link becomes ready kobject: 'loop1' (ffff8880a49f09a0): kobject_uevent_env kobject: 'loop1' (ffff8880a49f09a0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'kvm' (ffff888219f85590): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab4260): kobject_uevent_env kobject: 'loop0' (ffff888057c1ae60): kobject_uevent_env kobject: 'loop0' (ffff888057c1ae60): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'kvm' (ffff888219f85590): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop4' (ffff8880a4ab4260): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (ffff888057c1ae60): kobject_uevent_env kobject: 'loop5' (ffff8880a4b32b60): kobject_uevent_env kobject: 'kvm' (ffff888219f85590): kobject_uevent_env print_req_error: I/O error, dev loop0, sector 0 kobject: 'loop0' (ffff888057c1ae60): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'kvm' (ffff888219f85590): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop5' (ffff8880a4b32b60): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (ffff888057c1ae60): kobject_uevent_env kobject: 'loop0' (ffff888057c1ae60): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (ffff8880a4a3b2a0): kobject_uevent_env kobject: 'loop2' (ffff8880a4a3b2a0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (ffff8880a49f09a0): kobject_uevent_env mmap: syz-executor.1 (19432): VmData 18534400 exceed data ulimit 6. Update limits or use boot option ignore_rlimit_data. kobject: 'loop1' (ffff8880a49f09a0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (ffff8880a4b32b60): kobject_uevent_env kobject: 'loop5' (ffff8880a4b32b60): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (ffff8880a4ab4260): kobject_uevent_env kobject: 'loop0' (ffff888057c1ae60): kobject_uevent_env kobject: 'loop0' (ffff888057c1ae60): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (ffff8880a4ab4260): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (ffff8880a49f09a0): kobject_uevent_env kobject: 'loop1' (ffff8880a49f09a0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (ffff8880a4b32b60): kobject_uevent_env kobject: 'loop5' (ffff8880a4b32b60): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (ffff8880a4a65320): kobject_uevent_env kobject: 'loop3' (ffff8880a4a65320): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (ffff8880a49f09a0): kobject_uevent_env kobject: 'loop1' (ffff8880a49f09a0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (ffff8880a4b32b60): kobject_uevent_env kobject: 'loop5' (ffff8880a4b32b60): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (ffff888057c1ae60): kobject_uevent_env kobject: 'loop0' (ffff888057c1ae60): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (ffff8880a49f09a0): kobject_uevent_env kobject: 'loop1' (ffff8880a49f09a0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (ffff8880a4b32b60): kobject_uevent_env kobject: 'loop5' (ffff8880a4b32b60): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (ffff888057c1ae60): kobject_uevent_env kobject: 'loop0' (ffff888057c1ae60): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (ffff8880a4a3b2a0): kobject_uevent_env kobject: 'loop0' (ffff888057c1ae60): kobject_uevent_env kobject: 'loop2' (ffff8880a4a3b2a0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (ffff888057c1ae60): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (ffff8880a49f09a0): kobject_uevent_env kobject: 'loop1' (ffff8880a49f09a0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop1' (ffff8880a49f09a0): kobject_uevent_env kobject: 'loop1' (ffff8880a49f09a0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (ffff8880a4a3b2a0): kobject_uevent_env kobject: 'kvm' (ffff888219f85590): kobject_uevent_env kobject: 'loop2' (ffff8880a4a3b2a0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'kvm' (ffff888219f85590): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop0' (ffff888057c1ae60): kobject_uevent_env print_req_error: I/O error, dev loop0, sector 0 kobject: 'loop4' (ffff8880a4ab4260): kobject_uevent_env kobject: 'kvm' (ffff888219f85590): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab4260): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'kvm' (ffff888219f85590): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop5' (ffff8880a4b32b60): kobject_uevent_env kobject: 'loop0' (ffff888057c1ae60): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (ffff8880a4b32b60): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (ffff8880a4a3b2a0): kobject_uevent_env kobject: 'loop2' (ffff8880a4a3b2a0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (ffff8880a4a65320): kobject_uevent_env kobject: 'loop3' (ffff8880a4a65320): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (ffff888057c1ae60): kobject_uevent_env kobject: 'loop0' (ffff888057c1ae60): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (ffff8880a4b32b60): kobject_uevent_env kobject: 'loop5' (ffff8880a4b32b60): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (ffff8880a4ab4260): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab4260): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (ffff8880a4a3b2a0): kobject_uevent_env kobject: 'loop2' (ffff8880a4a3b2a0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (ffff888057c1ae60): kobject_uevent_env kobject: 'loop0' (ffff888057c1ae60): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (ffff8880a49f09a0): kobject_uevent_env kobject: 'loop1' (ffff8880a49f09a0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (ffff888057c1ae60): kobject_uevent_env kobject: 'loop0' (ffff888057c1ae60): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (ffff8880a49f09a0): kobject_uevent_env kobject: 'loop1' (ffff8880a49f09a0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (ffff8880a4ab4260): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab4260): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (ffff8880a4a3b2a0): kobject_uevent_env kobject: 'loop2' (ffff8880a4a3b2a0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (ffff8880a49f09a0): kobject_uevent_env kobject: 'loop0' (ffff888057c1ae60): kobject_uevent_env kobject: 'loop0' (ffff888057c1ae60): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (ffff8880a49f09a0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop1' (ffff8880a49f09a0): kobject_uevent_env kobject: 'loop1' (ffff8880a49f09a0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (ffff8880a4a65320): kobject_uevent_env net_ratelimit: 16 callbacks suppressed protocol 88fb is buggy, dev hsr_slave_0 kobject: 'loop3' (ffff8880a4a65320): fill_kobj_path: path = '/devices/virtual/block/loop3' protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop1' (ffff8880a49f09a0): kobject_uevent_env kobject: 'loop1' (ffff8880a49f09a0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (ffff8880a4ab4260): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab4260): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (ffff8880a4b32b60): kobject_uevent_env kobject: 'loop5' (ffff8880a4b32b60): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (ffff8880a49f09a0): kobject_uevent_env kobject: 'loop1' (ffff8880a49f09a0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (ffff888057c1ae60): kobject_uevent_env kobject: 'loop0' (ffff888057c1ae60): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (ffff8880a4a3b2a0): kobject_uevent_env kobject: 'loop2' (ffff8880a4a3b2a0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (ffff8880a49f09a0): kobject_uevent_env kobject: 'loop1' (ffff8880a49f09a0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (ffff8880a4a3b2a0): kobject_uevent_env kobject: 'loop2' (ffff8880a4a3b2a0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (ffff8880a49f09a0): kobject_uevent_env kobject: 'loop1' (ffff8880a49f09a0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (ffff888057c1ae60): kobject_uevent_env kobject: 'loop0' (ffff888057c1ae60): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (ffff8880a4a65320): kobject_uevent_env kobject: 'loop3' (ffff8880a4a65320): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (ffff8880a4a3b2a0): kobject_uevent_env kobject: 'loop2' (ffff8880a4a3b2a0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (ffff8880a49f09a0): kobject_uevent_env kobject: 'loop1' (ffff8880a49f09a0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (ffff8880a4b32b60): kobject_uevent_env kobject: 'loop5' (ffff8880a4b32b60): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (ffff8880a4a3b2a0): kobject_uevent_env kobject: 'loop2' (ffff8880a4a3b2a0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (ffff8880a49f09a0): kobject_uevent_env kobject: 'loop1' (ffff8880a49f09a0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (ffff8880a4a3b2a0): kobject_uevent_env kobject: 'loop2' (ffff8880a4a3b2a0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (ffff8880a49f09a0): kobject_uevent_env kobject: 'loop1' (ffff8880a49f09a0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (ffff8880a4a3b2a0): kobject_uevent_env kobject: 'loop2' (ffff8880a4a3b2a0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (ffff8880a4b32b60): kobject_uevent_env kobject: 'loop5' (ffff8880a4b32b60): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (ffff8880a49f09a0): kobject_uevent_env kobject: 'loop1' (ffff8880a49f09a0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (ffff8880a4a65320): kobject_uevent_env kobject: 'loop3' (ffff8880a4a65320): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (ffff8880a4ab4260): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab4260): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (ffff8880a4a3b2a0): kobject_uevent_env kobject: 'loop2' (ffff8880a4a3b2a0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (ffff8880a4b32b60): kobject_uevent_env kobject: 'loop5' (ffff8880a4b32b60): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (ffff8880a49f09a0): kobject_uevent_env kobject: 'loop1' (ffff8880a49f09a0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (ffff8880a4a3b2a0): kobject_uevent_env kobject: 'loop2' (ffff8880a4a3b2a0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (ffff8880a4b32b60): kobject_uevent_env kobject: 'loop5' (ffff8880a4b32b60): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (ffff888057c1ae60): kobject_uevent_env kobject: 'loop0' (ffff888057c1ae60): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (ffff8880a49f09a0): kobject_uevent_env kobject: 'loop1' (ffff8880a49f09a0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (ffff8880a4b32b60): kobject_uevent_env kobject: 'loop5' (ffff8880a4b32b60): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (ffff888057c1ae60): kobject_uevent_env kobject: 'loop0' (ffff888057c1ae60): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (ffff8880a4a65320): kobject_uevent_env kobject: 'loop3' (ffff8880a4a65320): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (ffff8880a4ab4260): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab4260): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (ffff8880a49f09a0): kobject_uevent_env kobject: 'loop1' (ffff8880a49f09a0): fill_kobj_path: path = '/devices/virtual/block/loop1' protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop5' (ffff8880a4b32b60): kobject_uevent_env kobject: 'loop5' (ffff8880a4b32b60): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (ffff8880a4a3b2a0): kobject_uevent_env kobject: 'loop2' (ffff8880a4a3b2a0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (ffff888057c1ae60): kobject_uevent_env kobject: 'loop0' (ffff888057c1ae60): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (ffff8880a4b32b60): kobject_uevent_env kobject: 'loop5' (ffff8880a4b32b60): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (ffff8880a4a3b2a0): kobject_uevent_env kobject: 'loop2' (ffff8880a4a3b2a0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (ffff8880a4b32b60): kobject_uevent_env kobject: 'loop5' (ffff8880a4b32b60): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (ffff888057c1ae60): kobject_uevent_env kobject: 'loop0' (ffff888057c1ae60): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (ffff8880a4a65320): kobject_uevent_env kobject: 'loop3' (ffff8880a4a65320): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (ffff8880a4ab4260): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab4260): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (ffff8880a49f09a0): kobject_uevent_env kobject: 'loop1' (ffff8880a49f09a0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (ffff8880a4a3b2a0): kobject_uevent_env kobject: 'loop2' (ffff8880a4a3b2a0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (ffff8880a4b32b60): kobject_uevent_env kobject: 'loop5' (ffff8880a4b32b60): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (ffff8880a4b32b60): kobject_uevent_env kobject: 'loop5' (ffff8880a4b32b60): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (ffff8880a4a3b2a0): kobject_uevent_env kobject: 'loop2' (ffff8880a4a3b2a0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (ffff8880a4b32b60): kobject_uevent_env kobject: 'loop5' (ffff8880a4b32b60): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (ffff8880a4a3b2a0): kobject_uevent_env kobject: 'loop2' (ffff8880a4a3b2a0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (ffff888057c1ae60): kobject_uevent_env kobject: 'loop0' (ffff888057c1ae60): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (ffff8880a4a3b2a0): kobject_uevent_env kobject: 'loop2' (ffff8880a4a3b2a0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (ffff8880a4b32b60): kobject_uevent_env kobject: 'loop5' (ffff8880a4b32b60): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (ffff8880a4a65320): kobject_uevent_env kobject: 'loop3' (ffff8880a4a65320): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (ffff8880a4ab4260): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab4260): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (ffff8880a4a3b2a0): kobject_uevent_env kobject: 'loop2' (ffff8880a4a3b2a0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (ffff8880a4b32b60): kobject_uevent_env kobject: 'loop5' (ffff8880a4b32b60): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (ffff888057c1ae60): kobject_uevent_env kobject: 'loop0' (ffff888057c1ae60): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (ffff8880a4a3b2a0): kobject_uevent_env kobject: 'loop2' (ffff8880a4a3b2a0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (ffff8880a49f09a0): kobject_uevent_env kobject: 'loop1' (ffff8880a49f09a0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (ffff8880a4b32b60): kobject_uevent_env kobject: 'loop5' (ffff8880a4b32b60): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (ffff888057c1ae60): kobject_uevent_env kobject: 'loop0' (ffff888057c1ae60): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (ffff8880a49f09a0): kobject_uevent_env kobject: 'loop1' (ffff8880a49f09a0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (ffff8880a4b32b60): kobject_uevent_env kobject: 'loop5' (ffff8880a4b32b60): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (ffff888057c1ae60): kobject_uevent_env kobject: 'loop0' (ffff888057c1ae60): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (ffff8880a4a65320): kobject_uevent_env kobject: 'loop3' (ffff8880a4a65320): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (ffff8880a4ab4260): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab4260): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (ffff888057c1ae60): kobject_uevent_env kobject: 'loop0' (ffff888057c1ae60): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (ffff8880a4a3b2a0): kobject_uevent_env kobject: 'loop2' (ffff8880a4a3b2a0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (ffff888057c1ae60): kobject_uevent_env kobject: 'loop0' (ffff888057c1ae60): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (ffff8880a4b32b60): kobject_uevent_env kobject: 'loop5' (ffff8880a4b32b60): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (ffff8880a4a3b2a0): kobject_uevent_env kobject: 'loop2' (ffff8880a4a3b2a0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (ffff8880a49f09a0): kobject_uevent_env kobject: 'loop1' (ffff8880a49f09a0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (ffff888057c1ae60): kobject_uevent_env kobject: 'loop0' (ffff888057c1ae60): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (ffff8880a4a3b2a0): kobject_uevent_env kobject: 'loop2' (ffff8880a4a3b2a0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (ffff8880a4b32b60): kobject_uevent_env kobject: 'loop5' (ffff8880a4b32b60): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (ffff8880a4a65320): kobject_uevent_env kobject: 'loop3' (ffff8880a4a65320): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (ffff8880a4ab4260): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab4260): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (ffff888057c1ae60): kobject_uevent_env kobject: 'loop0' (ffff888057c1ae60): fill_kobj_path: path = '/devices/virtual/block/loop0' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop0' (ffff888057c1ae60): kobject_uevent_env kobject: 'loop0' (ffff888057c1ae60): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (ffff8880a49f09a0): kobject_uevent_env CPU: 1 PID: 19934 Comm: syz-executor.1 Not tainted 4.14.155-syzkaller #0 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+0x142/0x197 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_failslab+0xdb/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] __do_kmalloc mm/slab.c:3718 [inline] __kmalloc_track_caller+0x2ec/0x790 mm/slab.c:3735 memdup_user+0x26/0xa0 mm/util.c:164 strndup_user+0x62/0xf0 mm/util.c:195 copy_mount_string fs/namespace.c:2783 [inline] SYSC_mount fs/namespace.c:3080 [inline] SyS_mount+0x3c/0x120 fs/namespace.c:3072 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a639 RSP: 002b:00007f318de2dc78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f318de2dc90 RCX: 000000000045a639 RDX: 00000000200002c0 RSI: 0000000020000240 RDI: 0000000000000000 RBP: 000000000075bf20 R08: 00000000200000c0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f318de2e6d4 R13: 00000000004c71c0 R14: 00000000004dc948 R15: 0000000000000004 kobject: 'loop1' (ffff8880a49f09a0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (ffff8880a4a3b2a0): kobject_uevent_env kobject: 'loop2' (ffff8880a4a3b2a0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (ffff8880a4b32b60): kobject_uevent_env kobject: 'loop5' (ffff8880a4b32b60): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (ffff888057c1ae60): kobject_uevent_env kobject: 'loop0' (ffff888057c1ae60): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (ffff8880a4a65320): kobject_uevent_env kobject: 'loop3' (ffff8880a4a65320): fill_kobj_path: path = '/devices/virtual/block/loop3' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop1' (ffff8880a49f09a0): kobject_uevent_env CPU: 1 PID: 19956 Comm: syz-executor.1 Not tainted 4.14.155-syzkaller #0 kobject: 'loop1' (ffff8880a49f09a0): fill_kobj_path: path = '/devices/virtual/block/loop1' Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 kobject: 'loop2' (ffff8880a4a3b2a0): kobject_uevent_env Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x142/0x197 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_failslab+0xdb/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc_trace+0x2e9/0x790 mm/slab.c:3616 kobject: 'loop2' (ffff8880a4a3b2a0): fill_kobj_path: path = '/devices/virtual/block/loop2' kmalloc include/linux/slab.h:488 [inline] copy_mount_options+0x5c/0x2f0 fs/namespace.c:2758 SYSC_mount fs/namespace.c:3090 [inline] SyS_mount+0x87/0x120 fs/namespace.c:3072 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a639 RSP: 002b:00007f318de2dc78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f318de2dc90 RCX: 000000000045a639 RDX: 00000000200002c0 RSI: 0000000020000240 RDI: 0000000000000000 RBP: 000000000075bf20 R08: 00000000200000c0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f318de2e6d4 R13: 00000000004c71c0 R14: 00000000004dc948 R15: 0000000000000004 net_ratelimit: 7 callbacks suppressed protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop1' (ffff8880a49f09a0): kobject_uevent_env kobject: 'loop1' (ffff8880a49f09a0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (ffff8880a4b32b60): kobject_uevent_env kobject: 'loop5' (ffff8880a4b32b60): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (ffff8880a4a3b2a0): kobject_uevent_env kobject: 'loop2' (ffff8880a4a3b2a0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (ffff8880a4a65320): kobject_uevent_env kobject: 'loop3' (ffff8880a4a65320): fill_kobj_path: path = '/devices/virtual/block/loop3' FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 1 CPU: 0 PID: 19925 Comm: syz-executor.4 Not tainted 4.14.155-syzkaller #0 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+0x142/0x197 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2891 [inline] prepare_alloc_pages mm/page_alloc.c:4124 [inline] __alloc_pages_nodemask+0x1d6/0x7a0 mm/page_alloc.c:4172 alloc_pages_current+0xec/0x1e0 mm/mempolicy.c:2113 alloc_pages include/linux/gfp.h:520 [inline] __get_free_pages+0xf/0x40 mm/page_alloc.c:4226 tlb_next_batch mm/memory.c:205 [inline] __tlb_remove_page_size+0x2c5/0x4f0 mm/memory.c:317 __tlb_remove_page include/asm-generic/tlb.h:150 [inline] zap_pte_range mm/memory.c:1345 [inline] zap_pmd_range mm/memory.c:1444 [inline] zap_pud_range mm/memory.c:1473 [inline] zap_p4d_range mm/memory.c:1494 [inline] unmap_page_range+0xacd/0x1770 mm/memory.c:1515 unmap_single_vma+0x15d/0x2c0 mm/memory.c:1560 unmap_vmas+0xac/0x170 mm/memory.c:1590 exit_mmap+0x285/0x4e0 mm/mmap.c:3062 __mmput kernel/fork.c:935 [inline] mmput+0x114/0x440 kernel/fork.c:956 exit_mm kernel/exit.c:545 [inline] do_exit+0x71d/0x2c10 kernel/exit.c:861 do_group_exit+0x111/0x330 kernel/exit.c:977 get_signal+0x381/0x1cd0 kernel/signal.c:2413 do_signal+0x86/0x19a0 arch/x86/kernel/signal.c:814 exit_to_usermode_loop+0x15c/0x220 arch/x86/entry/common.c:160 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4bc/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a639 RSP: 002b:00007fc0efc21c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000046 RAX: fffffffffffffdfe RBX: 00007fc0efc21c90 RCX: 000000000045a639 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc0efc226d4 R13: 00000000004c7294 R14: 00000000004dcc00 R15: 0000000000000003 kobject: 'loop4' (ffff8880a4ab4260): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab4260): fill_kobj_path: path = '/devices/virtual/block/loop4'