INFO: task syz-executor.2:20462 blocked for more than 145 seconds. Not tainted 6.0.0-rc7-syzkaller-18095-gbbed346d5a96 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack: 0 pid:20462 ppid: 3056 flags:0x00000009 Call trace: __switch_to+0x180/0x298 arch/arm64/kernel/process.c:557 context_switch kernel/sched/core.c:5182 [inline] __schedule+0x414/0x5a0 kernel/sched/core.c:6494 schedule+0x64/0xa4 kernel/sched/core.c:6570 request_wait_answer+0x1c0/0x3a8 fs/fuse/dev.c:407 __fuse_request_send+0x1f8/0x264 fs/fuse/dev.c:426 fuse_simple_request+0x354/0x40c fs/fuse/dev.c:511 fuse_lookup_name+0x104/0x324 fs/fuse/dir.c:392 fuse_lookup+0x90/0x274 fs/fuse/dir.c:433 __lookup_hash+0xa0/0x164 fs/namei.c:1601 filename_create+0x108/0x218 fs/namei.c:3785 do_mkdirat+0x54/0x22c fs/namei.c:4028 __do_sys_mkdirat fs/namei.c:4053 [inline] __se_sys_mkdirat fs/namei.c:4051 [inline] __arm64_sys_mkdirat+0x40/0x54 fs/namei.c:4051 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall arch/arm64/kernel/syscall.c:52 [inline] el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x164 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:636 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:654 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581 INFO: task syz-executor.1:20468 blocked for more than 147 seconds. Not tainted 6.0.0-rc7-syzkaller-18095-gbbed346d5a96 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack: 0 pid:20468 ppid: 3055 flags:0x00000009 Call trace: __switch_to+0x180/0x298 arch/arm64/kernel/process.c:557 context_switch kernel/sched/core.c:5182 [inline] __schedule+0x414/0x5a0 kernel/sched/core.c:6494 schedule+0x64/0xa4 kernel/sched/core.c:6570 request_wait_answer+0x1c0/0x3a8 fs/fuse/dev.c:407 __fuse_request_send+0x1f8/0x264 fs/fuse/dev.c:426 fuse_simple_request+0x354/0x40c fs/fuse/dev.c:511 fuse_lookup_name+0x104/0x324 fs/fuse/dir.c:392 fuse_lookup+0x90/0x274 fs/fuse/dir.c:433 __lookup_hash+0xa0/0x164 fs/namei.c:1601 filename_create+0x108/0x218 fs/namei.c:3785 do_mkdirat+0x54/0x22c fs/namei.c:4028 __do_sys_mkdirat fs/namei.c:4053 [inline] __se_sys_mkdirat fs/namei.c:4051 [inline] __arm64_sys_mkdirat+0x40/0x54 fs/namei.c:4051 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall arch/arm64/kernel/syscall.c:52 [inline] el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x164 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:636 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:654 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/11: #0: ffff80000d433568 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 kernel/rcu/tasks.h:507 1 lock held by rcu_tasks_trace/12: #0: ffff80000d433bb8 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 kernel/rcu/tasks.h:507 1 lock held by khungtaskd/27: #0: ffff80000d433440 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:279 4 locks held by kworker/u4:2/49: 2 locks held by getty/2710: #0: ffff0000c73cc098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x28/0x58 drivers/tty/tty_ldisc.c:244 #1: ffff80000f61e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x19c/0x89c drivers/tty/n_tty.c:2177 3 locks held by kworker/1:8/3118: 2 locks held by kworker/u4:6/3305: #0: ffff0000c0014938 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262 #1: ffff0001fefddb88 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x250/0x310 kernel/sched/psi.c:885 3 locks held by kworker/u4:8/4360: 3 locks held by syz-executor.2/20462: #0: ffff0000f7146460 (sb_writers#22){.+.+}-{0:0}, at: mnt_want_write+0x20/0x64 fs/namespace.c:393 #1: ffff0000e85b6550 (&type->i_mutex_dir_key#10/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:791 [inline] #1: ffff0000e85b6550 (&type->i_mutex_dir_key#10/1){+.+.}-{3:3}, at: filename_create+0xf8/0x218 fs/namei.c:3784 #2: ffff0000e85b69b8 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0x50/0x70 fs/fuse/inode.c:468 3 locks held by syz-executor.1/20468: #0: ffff0000ec154460 (sb_writers#22){.+.+}-{0:0}, at: mnt_want_write+0x20/0x64 fs/namespace.c:393 #1: ffff0000ee8671d0 (&type->i_mutex_dir_key#10/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:791 [inline] #1: ffff0000ee8671d0 (&type->i_mutex_dir_key#10/1){+.+.}-{3:3}, at: filename_create+0xf8/0x218 fs/namei.c:3784 #2: ffff0000ee867638 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0x50/0x70 fs/fuse/inode.c:468 1 lock held by dhcpcd/22220: #0: ffff0000f2fce130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1712 [inline] #0: ffff0000f2fce130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x3c/0x71c net/packet/af_packet.c:3194 1 lock held by dhcpcd/22221: #0: ffff0000f2fc8130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1712 [inline] #0: ffff0000f2fc8130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x3c/0x71c net/packet/af_packet.c:3194 1 lock held by dhcpcd/22238: #0: ffff0000f2fcd130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1712 [inline] #0: ffff0000f2fcd130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x3c/0x71c net/packet/af_packet.c:3194 3 locks held by kworker/u4:13/22262: 1 lock held by dhcpcd/22263: #0: ffff0000f57dc130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1712 [inline] #0: ffff0000f57dc130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x3c/0x71c net/packet/af_packet.c:3194 2 locks held by syz-executor.4/22274: #0: ffff80000d7e8a98 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x1d4/0x3e0 net/core/net_namespace.c:468 #1: ffff80000d7eaa28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74 2 locks held by syz-executor.2/22272: #0: ffff80000d7e8a98 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x1d4/0x3e0 net/core/net_namespace.c:468 #1: ffff80000d7eaa28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74 3 locks held by syz-executor.3/22286: #0: ffff0000c70e1460 (sb_writers#3){.+.+}-{0:0}, at: mnt_want_write+0x20/0x64 fs/namespace.c:393 #1: ffff0000caa6ed30 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline] #1: ffff0000caa6ed30 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: do_truncate+0xf4/0x150 fs/open.c:63 #2: ffff0000caa6eed0 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:801 [inline] #2: ffff0000caa6eed0 (mapping.invalidate_lock){++++}-{3:3}, at: ext4_setattr+0x828/0xb40 fs/ext4/inode.c:5445 2 locks held by udevd/22287: 3 locks held by syz-executor.5/22289: =============================================