INFO: task kworker/u4:8:27767 blocked for more than 143 seconds. Not tainted 5.15.0-rc5-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:8 state:D stack:24864 pid:27767 ppid: 2 flags:0x00004000 Workqueue: netns cleanup_net Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0xb44/0x5960 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6425 __mutex_lock_common kernel/locking/mutex.c:669 [inline] __mutex_lock+0xa34/0x12f0 kernel/locking/mutex.c:729 netdev_run_todo+0x6fa/0xa80 net/core/dev.c:10619 ip_tunnel_delete_nets+0x3a4/0x5b0 net/ipv4/ip_tunnel.c:1124 ops_exit_list+0x10d/0x160 net/core/net_namespace.c:171 cleanup_net+0x4ea/0xb00 net/core/net_namespace.c:593 process_one_work+0x9bf/0x16b0 kernel/workqueue.c:2297 worker_thread+0x658/0x11f0 kernel/workqueue.c:2444 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task syz-executor.1:29316 blocked for more than 143 seconds. Not tainted 5.15.0-rc5-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:26472 pid:29316 ppid: 6548 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0xb44/0x5960 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6425 __mutex_lock_common kernel/locking/mutex.c:669 [inline] __mutex_lock+0xa34/0x12f0 kernel/locking/mutex.c:729 ib_get_eth_speed+0xfe/0x5f0 drivers/infiniband/core/verbs.c:1900 siw_query_port+0x38/0x3e0 drivers/infiniband/sw/siw/siw_verbs.c:171 iw_query_port drivers/infiniband/core/device.c:2048 [inline] ib_query_port drivers/infiniband/core/device.c:2089 [inline] ib_query_port+0x381/0x890 drivers/infiniband/core/device.c:2081 ib_setup_port_attrs+0x1bd/0x5c0 drivers/infiniband/core/sysfs.c:1416 add_one_compat_dev+0x4ab/0x800 drivers/infiniband/core/device.c:968 rdma_dev_init_net+0x28b/0x480 drivers/infiniband/core/device.c:1184 ops_init+0xaf/0x470 net/core/net_namespace.c:140 setup_net+0x40f/0xa30 net/core/net_namespace.c:326 copy_net_ns+0x319/0x760 net/core/net_namespace.c:470 create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0xc1/0x1f0 kernel/nsproxy.c:226 ksys_unshare+0x445/0x920 kernel/fork.c:3077 __do_sys_unshare kernel/fork.c:3151 [inline] __se_sys_unshare kernel/fork.c:3149 [inline] __x64_sys_unshare+0x2d/0x40 kernel/fork.c:3149 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f103a83ba39 RSP: 002b:00007f1037db1188 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 00007f103a93ef60 RCX: 00007f103a83ba39 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000006c060000 RBP: 00007f103a895c5f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffd7a8123f R14: 00007f1037db1300 R15: 0000000000022000 INFO: task syz-executor.1:29318 blocked for more than 143 seconds. Not tainted 5.15.0-rc5-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:27328 pid:29318 ppid: 6548 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0xb44/0x5960 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6425 __mutex_lock_common kernel/locking/mutex.c:669 [inline] __mutex_lock+0xa34/0x12f0 kernel/locking/mutex.c:729 ib_get_eth_speed+0xfe/0x5f0 drivers/infiniband/core/verbs.c:1900 rxe_query_port+0x13c/0x2d0 drivers/infiniband/sw/rxe/rxe_verbs.c:41 __ib_query_port drivers/infiniband/core/device.c:2059 [inline] ib_query_port drivers/infiniband/core/device.c:2091 [inline] ib_query_port+0x41d/0x890 drivers/infiniband/core/device.c:2081 ib_setup_port_attrs+0x1bd/0x5c0 drivers/infiniband/core/sysfs.c:1416 add_one_compat_dev+0x4ab/0x800 drivers/infiniband/core/device.c:968 rdma_dev_init_net+0x28b/0x480 drivers/infiniband/core/device.c:1184 ops_init+0xaf/0x470 net/core/net_namespace.c:140 setup_net+0x40f/0xa30 net/core/net_namespace.c:326 copy_net_ns+0x319/0x760 net/core/net_namespace.c:470 create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0xc1/0x1f0 kernel/nsproxy.c:226 ksys_unshare+0x445/0x920 kernel/fork.c:3077 __do_sys_unshare kernel/fork.c:3151 [inline] __se_sys_unshare kernel/fork.c:3149 [inline] __x64_sys_unshare+0x2d/0x40 kernel/fork.c:3149 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f103a83ba39 RSP: 002b:00007f1037d90188 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 00007f103a93f020 RCX: 00007f103a83ba39 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000060000000 RBP: 00007f103a895c5f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffd7a8123f R14: 00007f1037d90300 R15: 0000000000022000 INFO: task syz-executor.0:29328 blocked for more than 144 seconds. Not tainted 5.15.0-rc5-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:26592 pid:29328 ppid: 6546 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0xb44/0x5960 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6425 __mutex_lock_common kernel/locking/mutex.c:669 [inline] __mutex_lock+0xa34/0x12f0 kernel/locking/mutex.c:729 ethnl_set_linkinfo+0x207/0x7d0 net/ethtool/linkinfo.c:120 genl_family_rcv_msg_doit+0x228/0x320 net/netlink/genetlink.c:731 genl_family_rcv_msg net/netlink/genetlink.c:775 [inline] genl_rcv_msg+0x328/0x580 net/netlink/genetlink.c:792 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2491 genl_rcv+0x24/0x40 net/netlink/genetlink.c:803 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x86d/0xda0 net/netlink/af_netlink.c:1916 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:724 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f4e52b34a39 RSP: 002b:00007f4e500aa188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f4e52c37f60 RCX: 00007f4e52b34a39 RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000006 RBP: 00007f4e52b8ec5f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc50496b3f R14: 00007f4e500aa300 R15: 0000000000022000 INFO: task syz-executor.0:29342 blocked for more than 144 seconds. Not tainted 5.15.0-rc5-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:26592 pid:29342 ppid: 6546 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0xb44/0x5960 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6425 __mutex_lock_common kernel/locking/mutex.c:669 [inline] __mutex_lock+0xa34/0x12f0 kernel/locking/mutex.c:729 ethnl_set_linkinfo+0x207/0x7d0 net/ethtool/linkinfo.c:120 genl_family_rcv_msg_doit+0x228/0x320 net/netlink/genetlink.c:731 genl_family_rcv_msg net/netlink/genetlink.c:775 [inline] genl_rcv_msg+0x328/0x580 net/netlink/genetlink.c:792 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2491 genl_rcv+0x24/0x40 net/netlink/genetlink.c:803 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x86d/0xda0 net/netlink/af_netlink.c:1916 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:724 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f4e52b34a39 RSP: 002b:00007f4e50089188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f4e52c38020 RCX: 00007f4e52b34a39 RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000006 RBP: 00007f4e52b8ec5f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc50496b3f R14: 00007f4e50089300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/27: #0: ffffffff8b981ee0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6446 3 locks held by kworker/u4:2/148: #0: ffff8880b9d31a58 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:474 #1: ffff8880b9d1f9c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x39d/0x480 kernel/sched/psi.c:880 #2: ffff888025858d80 (&wdev->mtx){+.+.}-{3:3}, at: sdata_lock net/mac80211/ieee80211_i.h:1014 [inline] #2: ffff888025858d80 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x93/0xe80 net/mac80211/ibss.c:1676 1 lock held by in:imklog/6228: #0: ffff88807c80b9f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990 4 locks held by kworker/u4:8/27767: #0: ffff88801207b138 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff88801207b138 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff88801207b138 ((wq_completion)netns){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline] #0: ffff88801207b138 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline] #0: ffff88801207b138 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline] #0: ffff88801207b138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x8a3/0x16b0 kernel/workqueue.c:2268 #1: ffffc90016d3fdb0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x8d7/0x16b0 kernel/workqueue.c:2272 #2: ffffffff8d0d5990 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x9b/0xb00 net/core/net_namespace.c:555 #3: ffffffff8d0e90e8 (rtnl_mutex){+.+.}-{3:3}, at: netdev_run_todo+0x6fa/0xa80 net/core/dev.c:10619 3 locks held by kworker/0:10/16767: #0: ffff888147f6dd38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888147f6dd38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888147f6dd38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline] #0: ffff888147f6dd38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline] #0: ffff888147f6dd38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline] #0: ffff888147f6dd38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x8a3/0x16b0 kernel/workqueue.c:2268 #1: ffffc9000543fdb0 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x8d7/0x16b0 kernel/workqueue.c:2272 #2: ffffffff8d0e90e8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4590 3 locks held by kworker/0:13/16777: #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x8a3/0x16b0 kernel/workqueue.c:2268 #1: ffffc9000549fdb0 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x8d7/0x16b0 kernel/workqueue.c:2272 #2: ffffffff8d0e90e8 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:74 5 locks held by syz-executor.1/29316: #0: ffffffff8d0d5990 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2f5/0x760 net/core/net_namespace.c:466 #1: ffffffff8ce01af0 (devices_rwsem){++++}-{3:3}, at: rdma_dev_init_net+0x20d/0x480 drivers/infiniband/core/device.c:1178 #2: ffffffff8ce01870 (rdma_nets_rwsem){++++}-{3:3}, at: rdma_dev_init_net+0x280/0x480 drivers/infiniband/core/device.c:1183 #3: ffff888083270fe0 (&device->compat_devs_mutex){+.+.}-{3:3}, at: add_one_compat_dev+0xea/0x800 drivers/infiniband/core/device.c:942 #4: ffffffff8d0e90e8 (rtnl_mutex){+.+.}-{3:3}, at: ib_get_eth_speed+0xfe/0x5f0 drivers/infiniband/core/verbs.c:1900 6 locks held by syz-executor.1/29318: #0: ffffffff8d0d5990 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2f5/0x760 net/core/net_namespace.c:466 #1: ffffffff8ce01af0 (devices_rwsem){++++}-{3:3}, at: rdma_dev_init_net+0x20d/0x480 drivers/infiniband/core/device.c:1178 #2: ffffffff8ce01870 (rdma_nets_rwsem){++++}-{3:3}, at: rdma_dev_init_net+0x280/0x480 drivers/infiniband/core/device.c:1183 #3: ffff88807ed38fe0 (&device->compat_devs_mutex){+.+.}-{3:3}, at: add_one_compat_dev+0xea/0x800 drivers/infiniband/core/device.c:942 #4: ffff88807ed39208 (&rxe->usdev_lock){+.+.}-{3:3}, at: rxe_query_port+0x129/0x2d0 drivers/infiniband/sw/rxe/rxe_verbs.c:40 #5: ffffffff8d0e90e8 (rtnl_mutex){+.+.}-{3:3}, at: ib_get_eth_speed+0xfe/0x5f0 drivers/infiniband/core/verbs.c:1900 1 lock held by syz-executor.1/29323: #0: ffffffff8d0e90e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d0e90e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 net/core/rtnetlink.c:5569 2 locks held by syz-executor.0/29328: #0: ffffffff8d17b530 (cb_lock){++++}-{3:3}, at: genl_rcv+0x15/0x40 net/netlink/genetlink.c:802 #1: ffffffff8d0e90e8 (rtnl_mutex){+.+.}-{3:3}, at: ethnl_set_linkinfo+0x207/0x7d0 net/ethtool/linkinfo.c:120 2 locks held by syz-executor.0/29342: #0: ffffffff8d17b530 (cb_lock){++++}-{3:3}, at: genl_rcv+0x15/0x40 net/netlink/genetlink.c:802 #1: ffffffff8d0e90e8 (rtnl_mutex){+.+.}-{3:3}, at: ethnl_set_linkinfo+0x207/0x7d0 net/ethtool/linkinfo.c:120 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0x1ae/0x220 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline] watchdog+0xc1d/0xf50 kernel/hung_task.c:295 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 2967 Comm: systemd-journal Not tainted 5.15.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x6b/0x70 kernel/kcov.c:286 Code: 00 00 00 48 39 fe 72 22 44 89 c6 48 83 c2 01 48 89 4c 38 f0 48 c7 44 38 e0 05 00 00 00 48 89 74 38 e8 4e 89 54 c8 20 48 89 10 0f 1f 40 00 53 41 89 fb 41 89 f1 bf 03 00 00 00 65 48 8b 0c 25 RSP: 0018:ffffc90002b9f988 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffff88807ad70000 RDI: 0000000000000003 RBP: dffffc0000000000 R08: 0000000000000005 R09: 0000000000000000 R10: ffffffff817335af R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffffffff8b83fac0 R15: 0000000000000001 FS: 00007f09ad5fd8c0(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f09aaaf0008 CR3: 000000007b30f000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: map_id_range_down+0x9f/0x340 kernel/user_namespace.c:301 map_id_down kernel/user_namespace.c:317 [inline] make_kuid+0x1e/0x30 kernel/user_namespace.c:394 kuid_into_mnt include/linux/fs.h:1640 [inline] i_uid_into_mnt include/linux/fs.h:1668 [inline] acl_permission_check fs/namei.c:341 [inline] generic_permission+0x88/0x5b0 fs/namei.c:403 do_inode_permission fs/namei.c:464 [inline] inode_permission.part.0+0x95/0x440 fs/namei.c:524 inode_permission fs/namei.c:505 [inline] may_lookup fs/namei.c:1683 [inline] link_path_walk.part.0+0x277/0xd00 fs/namei.c:2239 link_path_walk fs/namei.c:2222 [inline] path_parentat+0xb1/0x1c0 fs/namei.c:2496 filename_parentat+0x1bb/0x5a0 fs/namei.c:2519 filename_create+0xa1/0x480 fs/namei.c:3639 do_mkdirat+0x94/0x300 fs/namei.c:3900 __do_sys_mkdir fs/namei.c:3931 [inline] __se_sys_mkdir fs/namei.c:3929 [inline] __x64_sys_mkdir+0xf2/0x140 fs/namei.c:3929 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f09ac8b8687 Code: 00 b8 ff ff ff ff c3 0f 1f 40 00 48 8b 05 09 d8 2b 00 64 c7 00 5f 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 d7 2b 00 f7 d8 64 89 01 48 RSP: 002b:00007ffcf2353ef8 EFLAGS: 00000293 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffcf2356f60 RCX: 00007f09ac8b8687 RDX: 0000000000000000 RSI: 00000000000001ed RDI: 0000556f9b7de8a0 RBP: 00007ffcf2353f30 R08: 0000556f9b06d3e5 R09: 0000000000000018 R10: 0000000000000069 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000556f9b7de8a0 R15: 00007ffcf2354570 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 00 00 add %al,(%rax) 2: 48 39 fe cmp %rdi,%rsi 5: 72 22 jb 0x29 7: 44 89 c6 mov %r8d,%esi a: 48 83 c2 01 add $0x1,%rdx e: 48 89 4c 38 f0 mov %rcx,-0x10(%rax,%rdi,1) 13: 48 c7 44 38 e0 05 00 movq $0x5,-0x20(%rax,%rdi,1) 1a: 00 00 1c: 48 89 74 38 e8 mov %rsi,-0x18(%rax,%rdi,1) 21: 4e 89 54 c8 20 mov %r10,0x20(%rax,%r9,8) 26: 48 89 10 mov %rdx,(%rax) * 29: c3 retq <-- trapping instruction 2a: 0f 1f 40 00 nopl 0x0(%rax) 2e: 53 push %rbx 2f: 41 89 fb mov %edi,%r11d 32: 41 89 f1 mov %esi,%r9d 35: bf 03 00 00 00 mov $0x3,%edi 3a: 65 gs 3b: 48 rex.W 3c: 8b .byte 0x8b 3d: 0c 25 or $0x25,%al