INFO: task syz-executor.0:8373 blocked for more than 143 seconds. Not tainted 6.9.0-rc7-syzkaller-gfda5695d692c #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:0 pid:8373 tgid:8367 ppid:6265 flags:0x0000000d Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5409 [inline] __schedule+0x14b8/0x24e8 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 Showing all locks held in the system: 1 lock held by khungtaskd/30: #0: ffff80008f087940 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:328 3 locks held by kworker/u8:2/41: #0: ffff0000c0031948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x668/0x15d4 kernel/workqueue.c:3241 #1: ffff8000952a7c20 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x6b4/0x15d4 kernel/workqueue.c:3241 #2: ffff800091c030e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 3 locks held by kworker/u8:6/465: #0: ffff0000d23e2148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x668/0x15d4 kernel/workqueue.c:3241 #1: ffff800098e97c20 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6b4/0x15d4 kernel/workqueue.c:3241 #2: ffff800091c030e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 2 locks held by getty/6004: #0: ffff0000d84200a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff800097b9e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2201 3 locks held by syz-executor.0/8370: 2 locks held by syz-executor.0/8373: #0: ffff0000f1030420 (sb_writers#22){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:409 #1: ffff0000dd5d0940 (&sb->s_type->i_mutex_key#27/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:830 [inline] #1: ffff0000dd5d0940 (&sb->s_type->i_mutex_key#27/1){+.+.}-{3:3}, at: lock_rename fs/namei.c:3066 [inline] #1: ffff0000dd5d0940 (&sb->s_type->i_mutex_key#27/1){+.+.}-{3:3}, at: do_renameat2+0x4ec/0xe40 fs/namei.c:4972 1 lock held by syz-executor.1/8472: 1 lock held by syz-executor.0/8487: #0: ffff800091c030e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff800091c030e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e0/0xdbc net/core/rtnetlink.c:6592 2 locks held by syz-executor.2/8519: #0: ffff800091c63650 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1216 #1: ffff800091c030e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 1 lock held by syz-executor.1/8607: #0: ffff800091c030e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff800091c030e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e0/0xdbc net/core/rtnetlink.c:6592 1 lock held by syz-executor.3/8620: #0: ffff800091c030e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 1 lock held by syz-executor.2/8625: #0: ffff800091c030e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff800091c030e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e0/0xdbc net/core/rtnetlink.c:6592 2 locks held by syz-executor.4/8631: #0: ffff800091c63650 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1216 #1: ffff800091c030e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 1 lock held by syz-executor.3/8645: #0: ffff800091c030e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff800091c030e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e0/0xdbc net/core/rtnetlink.c:6592 1 lock held by syz-executor.4/8649: #0: ffff800091c030e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff800091c030e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e0/0xdbc net/core/rtnetlink.c:6592 1 lock held by syz-executor.0/8655: #0: ffff800091c030e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff800091c030e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e0/0xdbc net/core/rtnetlink.c:6592 1 lock held by syz-executor.1/8665: #0: ffff800091c030e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff800091c030e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e0/0xdbc net/core/rtnetlink.c:6592 1 lock held by syz-executor.2/8668: #0: ffff800091c030e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff800091c030e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e0/0xdbc net/core/rtnetlink.c:6592 =============================================