INFO: task syz.2.18:4939 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.18 state:D stack: 0 pid: 4939 ppid: 4822 flags:0x00000001 Call trace: __switch_to+0x2f4/0x540 arch/arm64/kernel/process.c:521 context_switch kernel/sched/core.c:5049 [inline] __schedule+0xdfc/0x1bc4 kernel/sched/core.c:6395 schedule+0x11c/0x1c8 kernel/sched/core.c:6478 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6537 rwsem_down_read_slowpath+0x47c/0x8d0 kernel/locking/rwsem.c:1055 __down_read_common kernel/locking/rwsem.c:1239 [inline] __down_read kernel/locking/rwsem.c:1252 [inline] down_read+0x100/0x38c kernel/locking/rwsem.c:1500 inode_lock_shared include/linux/fs.h:797 [inline] open_last_lookups fs/namei.c:3539 [inline] path_openat+0x5f4/0x2718 fs/namei.c:3747 do_filp_open+0x184/0x368 fs/namei.c:3777 do_sys_openat2+0x134/0x3f4 fs/open.c:1255 do_sys_open fs/open.c:1271 [inline] __do_sys_openat fs/open.c:1287 [inline] __se_sys_openat fs/open.c:1282 [inline] __arm64_sys_openat+0x118/0x14c fs/open.c:1282 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1d0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 INFO: task syz.1.17:5003 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.17 state:D stack: 0 pid: 5003 ppid: 4818 flags:0x00000001 Call trace: __switch_to+0x2f4/0x540 arch/arm64/kernel/process.c:521 context_switch kernel/sched/core.c:5049 [inline] __schedule+0xdfc/0x1bc4 kernel/sched/core.c:6395 schedule+0x11c/0x1c8 kernel/sched/core.c:6478 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6537 rwsem_down_read_slowpath+0x47c/0x8d0 kernel/locking/rwsem.c:1055 __down_read_common kernel/locking/rwsem.c:1239 [inline] __down_read kernel/locking/rwsem.c:1252 [inline] down_read+0x100/0x38c kernel/locking/rwsem.c:1500 inode_lock_shared include/linux/fs.h:797 [inline] open_last_lookups fs/namei.c:3539 [inline] path_openat+0x5f4/0x2718 fs/namei.c:3747 do_filp_open+0x184/0x368 fs/namei.c:3777 do_sys_openat2+0x134/0x3f4 fs/open.c:1255 do_sys_open fs/open.c:1271 [inline] __do_sys_openat fs/open.c:1287 [inline] __se_sys_openat fs/open.c:1282 [inline] __arm64_sys_openat+0x118/0x14c fs/open.c:1282 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1d0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 INFO: task syz.0.16:5258 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.16 state:D stack: 0 pid: 5258 ppid: 4823 flags:0x00000001 Call trace: __switch_to+0x2f4/0x540 arch/arm64/kernel/process.c:521 context_switch kernel/sched/core.c:5049 [inline] __schedule+0xdfc/0x1bc4 kernel/sched/core.c:6395 schedule+0x11c/0x1c8 kernel/sched/core.c:6478 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6537 rwsem_down_read_slowpath+0x47c/0x8d0 kernel/locking/rwsem.c:1055 __down_read_common kernel/locking/rwsem.c:1239 [inline] __down_read kernel/locking/rwsem.c:1252 [inline] down_read+0x100/0x38c kernel/locking/rwsem.c:1500 inode_lock_shared include/linux/fs.h:797 [inline] open_last_lookups fs/namei.c:3539 [inline] path_openat+0x5f4/0x2718 fs/namei.c:3747 do_filp_open+0x184/0x368 fs/namei.c:3777 do_sys_openat2+0x134/0x3f4 fs/open.c:1255 do_sys_open fs/open.c:1271 [inline] __do_sys_openat fs/open.c:1287 [inline] __se_sys_openat fs/open.c:1282 [inline] __arm64_sys_openat+0x118/0x14c fs/open.c:1282 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1d0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 INFO: task syz.3.19:5274 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.3.19 state:D stack: 0 pid: 5274 ppid: 4819 flags:0x00000001 Call trace: __switch_to+0x2f4/0x540 arch/arm64/kernel/process.c:521 context_switch kernel/sched/core.c:5049 [inline] __schedule+0xdfc/0x1bc4 kernel/sched/core.c:6395 schedule+0x11c/0x1c8 kernel/sched/core.c:6478 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6537 rwsem_down_read_slowpath+0x47c/0x8d0 kernel/locking/rwsem.c:1055 __down_read_common kernel/locking/rwsem.c:1239 [inline] __down_read kernel/locking/rwsem.c:1252 [inline] down_read+0x100/0x38c kernel/locking/rwsem.c:1500 inode_lock_shared include/linux/fs.h:797 [inline] open_last_lookups fs/namei.c:3539 [inline] path_openat+0x5f4/0x2718 fs/namei.c:3747 do_filp_open+0x184/0x368 fs/namei.c:3777 do_sys_openat2+0x134/0x3f4 fs/open.c:1255 do_sys_open fs/open.c:1271 [inline] __do_sys_openat fs/open.c:1287 [inline] __se_sys_openat fs/open.c:1282 [inline] __arm64_sys_openat+0x118/0x14c fs/open.c:1282 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1d0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 INFO: task syz.4.20:5284 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.4.20 state:D stack: 0 pid: 5284 ppid: 4824 flags:0x00000001 Call trace: __switch_to+0x2f4/0x540 arch/arm64/kernel/process.c:521 context_switch kernel/sched/core.c:5049 [inline] __schedule+0xdfc/0x1bc4 kernel/sched/core.c:6395 schedule+0x11c/0x1c8 kernel/sched/core.c:6478 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6537 rwsem_down_read_slowpath+0x47c/0x8d0 kernel/locking/rwsem.c:1055 __down_read_common kernel/locking/rwsem.c:1239 [inline] __down_read kernel/locking/rwsem.c:1252 [inline] down_read+0x100/0x38c kernel/locking/rwsem.c:1500 inode_lock_shared include/linux/fs.h:797 [inline] open_last_lookups fs/namei.c:3539 [inline] path_openat+0x5f4/0x2718 fs/namei.c:3747 do_filp_open+0x184/0x368 fs/namei.c:3777 do_sys_openat2+0x134/0x3f4 fs/open.c:1255 do_sys_open fs/open.c:1271 [inline] __do_sys_openat fs/open.c:1287 [inline] __se_sys_openat fs/open.c:1282 [inline] __arm64_sys_openat+0x118/0x14c fs/open.c:1282 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1d0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Showing all locks held in the system: 3 locks held by kworker/1:1/25: #0: ffff0000c0020938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x678/0x1138 kernel/workqueue.c:2283 #1: ffff80001b527c00 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x6b8/0x1138 kernel/workqueue.c:2285 #2: ffff8000163bbce8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:72 1 lock held by khungtaskd/27: #0: ffff800014461360 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:312 3 locks held by kworker/u4:1/136: #0: ffff0000c0029138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x678/0x1138 kernel/workqueue.c:2283 #1: ffff80001be97c00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x6b8/0x1138 kernel/workqueue.c:2285 #2: ffff8000163bbce8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:72 4 locks held by kworker/u4:4/354: #0: ffff0000c038c138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x678/0x1138 kernel/workqueue.c:2283 #1: ffff80001f677c00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x6b8/0x1138 kernel/workqueue.c:2285 #2: ffff8000163b0410 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x13c/0xaa4 net/core/net_namespace.c:589 #3: ffff8000163bbce8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:72 1 lock held by udevd/3660: 2 locks held by getty/3805: #0: ffff0000d3ea6098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 drivers/tty/tty_ldsem.c:340 #1: ffff80001be7e2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x2f0/0xf6c drivers/tty/n_tty.c:2158 3 locks held by syz.2.18/4926: 1 lock held by syz.2.18/4939: #0: ffff0000f197c188 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:797 [inline] #0: ffff0000f197c188 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: open_last_lookups fs/namei.c:3539 [inline] #0: ffff0000f197c188 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: path_openat+0x5f4/0x2718 fs/namei.c:3747 2 locks held by syz.1.17/4997: 1 lock held by syz.1.17/5003: #0: ffff0000f2b34188 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:797 [inline] #0: ffff0000f2b34188 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: open_last_lookups fs/namei.c:3539 [inline] #0: ffff0000f2b34188 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: path_openat+0x5f4/0x2718 fs/namei.c:3747 3 locks held by kworker/u4:6/5223: 2 locks held by syz.0.16/5252: 1 lock held by syz.0.16/5258: #0: ffff0000f197c6d0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:797 [inline] #0: ffff0000f197c6d0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: open_last_lookups fs/namei.c:3539 [inline] #0: ffff0000f197c6d0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: path_openat+0x5f4/0x2718 fs/namei.c:3747 2 locks held by syz.3.19/5270: 1 lock held by syz.3.19/5274: #0: ffff0000f2b346d0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:797 [inline] #0: ffff0000f2b346d0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: open_last_lookups fs/namei.c:3539 [inline] #0: ffff0000f2b346d0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: path_openat+0x5f4/0x2718 fs/namei.c:3747 2 locks held by syz.4.20/5280: 1 lock held by syz.4.20/5284: #0: ffff0000f2b34c18 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:797 [inline] #0: ffff0000f2b34c18 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: open_last_lookups fs/namei.c:3539 [inline] #0: ffff0000f2b34c18 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: path_openat+0x5f4/0x2718 fs/namei.c:3747 2 locks held by syz.5.21/5643: 1 lock held by syz.5.21/5645: #0: ffff0000f197cc18 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:797 [inline] #0: ffff0000f197cc18 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: open_last_lookups fs/namei.c:3539 [inline] #0: ffff0000f197cc18 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: path_openat+0x5f4/0x2718 fs/namei.c:3747 2 locks held by syz.6.22/5654: 1 lock held by syz.6.22/5655: #0: ffff0000f197d160 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:797 [inline] #0: ffff0000f197d160 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: open_last_lookups fs/namei.c:3539 [inline] #0: ffff0000f197d160 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: path_openat+0x5f4/0x2718 fs/namei.c:3747 2 locks held by syz.7.23/5722: 1 lock held by syz.7.23/5723: #0: ffff0000f197d6a8 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:797 [inline] #0: ffff0000f197d6a8 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: open_last_lookups fs/namei.c:3539 [inline] #0: ffff0000f197d6a8 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: path_openat+0x5f4/0x2718 fs/namei.c:3747 2 locks held by syz.9.25/5745: 1 lock held by syz.9.25/5746: #0: ffff0000f197dbf0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:797 [inline] #0: ffff0000f197dbf0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: open_last_lookups fs/namei.c:3539 [inline] #0: ffff0000f197dbf0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: path_openat+0x5f4/0x2718 fs/namei.c:3747 2 locks held by syz.8.24/5748: 1 lock held by syz.8.24/5749: #0: ffff0000f2b35160 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:797 [inline] #0: ffff0000f2b35160 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: open_last_lookups fs/namei.c:3539 [inline] #0: ffff0000f2b35160 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: path_openat+0x5f4/0x2718 fs/namei.c:3747 1 lock held by syz-executor/12311: #0: ffff8000163bbce8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffff8000163bbce8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6d0/0xd70 net/core/rtnetlink.c:5681 =============================================