INFO: task syz-executor.2:7301 blocked for more than 143 seconds. Not tainted 6.9.0-rc4-syzkaller-g6a71d2909427 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:0 pid:7301 tgid:7281 ppid:6268 flags:0x00000005 Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5409 [inline] __schedule+0x14bc/0x24ec kernel/sched/core.c:6746 __schedule_loop kernel/sched/core.c:6823 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6838 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6895 rwsem_down_write_slowpath+0xd10/0x14c8 kernel/locking/rwsem.c:1178 __down_write_common kernel/locking/rwsem.c:1306 [inline] __down_write kernel/locking/rwsem.c:1315 [inline] down_write_nested+0xc0/0xcc kernel/locking/rwsem.c:1696 inode_lock_nested include/linux/fs.h:830 [inline] lock_rename fs/namei.c:3066 [inline] do_renameat2+0x4ec/0xe40 fs/namei.c:4972 __do_sys_renameat2 fs/namei.c:5071 [inline] __se_sys_renameat2 fs/namei.c:5068 [inline] __arm64_sys_renameat2+0xe0/0xfc fs/namei.c:5068 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 INFO: task syz-executor.2:7308 blocked for more than 143 seconds. Not tainted 6.9.0-rc4-syzkaller-g6a71d2909427 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:0 pid:7308 tgid:7281 ppid:6268 flags:0x00000005 Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5409 [inline] __schedule+0x14bc/0x24ec kernel/sched/core.c:6746 __schedule_loop kernel/sched/core.c:6823 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6838 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6895 rwsem_down_write_slowpath+0xd10/0x14c8 kernel/locking/rwsem.c:1178 __down_write_common kernel/locking/rwsem.c:1306 [inline] __down_write kernel/locking/rwsem.c:1315 [inline] down_write+0xb4/0xc0 kernel/locking/rwsem.c:1580 inode_lock include/linux/fs.h:795 [inline] open_last_lookups fs/namei.c:3563 [inline] path_openat+0x5f0/0x2830 fs/namei.c:3796 do_filp_open+0x1bc/0x3cc fs/namei.c:3826 do_sys_openat2+0x124/0x1b8 fs/open.c:1406 do_sys_open fs/open.c:1421 [inline] __do_sys_openat fs/open.c:1437 [inline] __se_sys_openat fs/open.c:1432 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1432 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 INFO: task syz-executor.2:7312 blocked for more than 143 seconds. Not tainted 6.9.0-rc4-syzkaller-g6a71d2909427 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:0 pid:7312 tgid:7281 ppid:6268 flags:0x00000005 Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5409 [inline] __schedule+0x14bc/0x24ec kernel/sched/core.c:6746 __schedule_loop kernel/sched/core.c:6823 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6838 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6895 rwsem_down_write_slowpath+0xd10/0x14c8 kernel/locking/rwsem.c:1178 __down_write_common kernel/locking/rwsem.c:1306 [inline] __down_write kernel/locking/rwsem.c:1315 [inline] down_write+0xb4/0xc0 kernel/locking/rwsem.c:1580 inode_lock include/linux/fs.h:795 [inline] open_last_lookups fs/namei.c:3563 [inline] path_openat+0x5f0/0x2830 fs/namei.c:3796 do_filp_open+0x1bc/0x3cc fs/namei.c:3826 do_sys_openat2+0x124/0x1b8 fs/open.c:1406 do_sys_open fs/open.c:1421 [inline] __do_sys_openat fs/open.c:1437 [inline] __se_sys_openat fs/open.c:1432 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1432 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 Showing all locks held in the system: 1 lock held by khungtaskd/30: #0: ffff80008f0578c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:328 2 locks held by kworker/u8:3/42: 2 locks held by getty/6002: #0: ffff0000ccdc50a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff800097b6e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2201 2 locks held by syz-executor.2/7301: #0: ffff0000cce90420 (sb_writers#22){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:409 #1: ffff0000e4afc188 (&type->i_mutex_dir_key#16/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:830 [inline] #1: ffff0000e4afc188 (&type->i_mutex_dir_key#16/1){+.+.}-{3:3}, at: lock_rename fs/namei.c:3066 [inline] #1: ffff0000e4afc188 (&type->i_mutex_dir_key#16/1){+.+.}-{3:3}, at: do_renameat2+0x4ec/0xe40 fs/namei.c:4972 2 locks held by syz-executor.2/7305: 2 locks held by syz-executor.2/7308: #0: ffff0000cce90420 (sb_writers#22){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:409 #1: ffff0000e4afc188 (&type->i_mutex_dir_key#16){++++}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline] #1: ffff0000e4afc188 (&type->i_mutex_dir_key#16){++++}-{3:3}, at: open_last_lookups fs/namei.c:3563 [inline] #1: ffff0000e4afc188 (&type->i_mutex_dir_key#16){++++}-{3:3}, at: path_openat+0x5f0/0x2830 fs/namei.c:3796 2 locks held by syz-executor.2/7312: #0: ffff0000cce90420 (sb_writers#22){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:409 #1: ffff0000e4afc188 (&type->i_mutex_dir_key#16){++++}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline] #1: ffff0000e4afc188 (&type->i_mutex_dir_key#16){++++}-{3:3}, at: open_last_lookups fs/namei.c:3563 [inline] #1: ffff0000e4afc188 (&type->i_mutex_dir_key#16){++++}-{3:3}, at: path_openat+0x5f0/0x2830 fs/namei.c:3796 3 locks held by syz-executor.0/7529: 2 locks held by syz-executor.0/7533: #0: ffff0000d5b10420 (sb_writers#22){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:409 #1: ffff0000e4afcc18 (&type->i_mutex_dir_key#16/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:830 [inline] #1: ffff0000e4afcc18 (&type->i_mutex_dir_key#16/1){+.+.}-{3:3}, at: lock_rename fs/namei.c:3066 [inline] #1: ffff0000e4afcc18 (&type->i_mutex_dir_key#16/1){+.+.}-{3:3}, at: do_renameat2+0x4ec/0xe40 fs/namei.c:4972 2 locks held by syz-executor.0/7543: #0: ffff0000d5b10420 (sb_writers#22){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:409 #1: ffff0000e4afcc18 (&type->i_mutex_dir_key#16/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:830 [inline] #1: ffff0000e4afcc18 (&type->i_mutex_dir_key#16/1){+.+.}-{3:3}, at: lock_rename fs/namei.c:3066 [inline] #1: ffff0000e4afcc18 (&type->i_mutex_dir_key#16/1){+.+.}-{3:3}, at: do_renameat2+0x4ec/0xe40 fs/namei.c:4972 2 locks held by syz-executor.0/7547: #0: ffff0000d5b10420 (sb_writers#22){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:409 #1: ffff0000e4afcc18 (&type->i_mutex_dir_key#16){++++}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline] #1: ffff0000e4afcc18 (&type->i_mutex_dir_key#16){++++}-{3:3}, at: open_last_lookups fs/namei.c:3563 [inline] #1: ffff0000e4afcc18 (&type->i_mutex_dir_key#16){++++}-{3:3}, at: path_openat+0x5f0/0x2830 fs/namei.c:3796 2 locks held by syz-executor.0/7552: #0: ffff0000d5b10420 (sb_writers#22){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:409 #1: ffff0000e4afcc18 (&type->i_mutex_dir_key#16){++++}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline] #1: ffff0000e4afcc18 (&type->i_mutex_dir_key#16){++++}-{3:3}, at: open_last_lookups fs/namei.c:3563 [inline] #1: ffff0000e4afcc18 (&type->i_mutex_dir_key#16){++++}-{3:3}, at: path_openat+0x5f0/0x2830 fs/namei.c:3796 2 locks held by syz-executor.0/7556: #0: ffff0000d5b10420 (sb_writers#22){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:409 #1: ffff0000e4afcc18 (&type->i_mutex_dir_key#16){++++}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline] #1: ffff0000e4afcc18 (&type->i_mutex_dir_key#16){++++}-{3:3}, at: open_last_lookups fs/namei.c:3563 [inline] #1: ffff0000e4afcc18 (&type->i_mutex_dir_key#16){++++}-{3:3}, at: path_openat+0x5f0/0x2830 fs/namei.c:3796 3 locks held by syz-executor.4/7689: 2 locks held by syz-executor.4/7693: #0: ffff0000f479e420 (sb_writers#22){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:409 #1: ffff000101a9c188 (&type->i_mutex_dir_key#16/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:830 [inline] #1: ffff000101a9c188 (&type->i_mutex_dir_key#16/1){+.+.}-{3:3}, at: lock_rename fs/namei.c:3066 [inline] #1: ffff000101a9c188 (&type->i_mutex_dir_key#16/1){+.+.}-{3:3}, at: do_renameat2+0x4ec/0xe40 fs/namei.c:4972 2 locks held by syz-executor.4/7703: #0: ffff0000f479e420 (sb_writers#22){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:409 #1: ffff000101a9c188 (&type->i_mutex_dir_key#16/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:830 [inline] #1: ffff000101a9c188 (&type->i_mutex_dir_key#16/1){+.+.}-{3:3}, at: lock_rename fs/namei.c:3066 [inline] #1: ffff000101a9c188 (&type->i_mutex_dir_key#16/1){+.+.}-{3:3}, at: do_renameat2+0x4ec/0xe40 fs/namei.c:4972 2 locks held by syz-executor.4/7706: #0: ffff0000f479e420 (sb_writers#22){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:409 #1: ffff000101a9c188 (&type->i_mutex_dir_key#16){++++}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline] #1: ffff000101a9c188 (&type->i_mutex_dir_key#16){++++}-{3:3}, at: open_last_lookups fs/namei.c:3563 [inline] #1: ffff000101a9c188 (&type->i_mutex_dir_key#16){++++}-{3:3}, at: path_openat+0x5f0/0x2830 fs/namei.c:3796 2 locks held by syz-executor.4/7712: #0: ffff0000f479e420 (sb_writers#22){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:409 #1: ffff000101a9c188 (&type->i_mutex_dir_key#16){++++}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline] #1: ffff000101a9c188 (&type->i_mutex_dir_key#16){++++}-{3:3}, at: open_last_lookups fs/namei.c:3563 [inline] #1: ffff000101a9c188 (&type->i_mutex_dir_key#16){++++}-{3:3}, at: path_openat+0x5f0/0x2830 fs/namei.c:3796 2 locks held by syz-executor.4/7713: #0: ffff0000f479e420 (sb_writers#22){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:409 #1: ffff000101a9c188 (&type->i_mutex_dir_key#16){++++}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline] #1: ffff000101a9c188 (&type->i_mutex_dir_key#16){++++}-{3:3}, at: open_last_lookups fs/namei.c:3563 [inline] #1: ffff000101a9c188 (&type->i_mutex_dir_key#16){++++}-{3:3}, at: path_openat+0x5f0/0x2830 fs/namei.c:3796 2 locks held by syz-executor.4/9647: =============================================