INFO: task syz.1.261:7890 blocked for more than 144 seconds. Not tainted 6.16.0-rc2-syzkaller-g9aa9b43d689e #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.261 state:D stack:0 pid:7890 tgid:7883 ppid:6525 task_flags:0x400140 flags:0x00000001 Call trace: __switch_to+0x414/0x834 arch/arm64/kernel/process.c:737 (T) context_switch kernel/sched/core.c:5396 [inline] __schedule+0x1414/0x2a28 kernel/sched/core.c:6785 __schedule_loop kernel/sched/core.c:6863 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6878 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6935 __mutex_lock_common+0xbd0/0x2190 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 nfsd_nl_listener_set_doit+0x110/0x127c fs/nfsd/nfsctl.c:1923 genl_family_rcv_msg_doit+0x1d8/0x2bc net/netlink/genetlink.c:1115 genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0x450/0x624 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x220/0x3fc net/netlink/af_netlink.c:2534 genl_rcv+0x38/0x50 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x60c/0x824 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x648/0x930 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg net/socket.c:727 [inline] ____sys_sendmsg+0x490/0x7b8 net/socket.c:2566 ___sys_sendmsg+0x204/0x278 net/socket.c:2620 __sys_sendmsg net/socket.c:2652 [inline] __do_sys_sendmsg net/socket.c:2657 [inline] __se_sys_sendmsg net/socket.c:2655 [inline] __arm64_sys_sendmsg+0x184/0x238 net/socket.c:2655 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 INFO: task syz.5.262:7901 blocked for more than 144 seconds. Not tainted 6.16.0-rc2-syzkaller-g9aa9b43d689e #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.5.262 state:D stack:0 pid:7901 tgid:7885 ppid:7638 task_flags:0x400140 flags:0x00000001 Call trace: __switch_to+0x414/0x834 arch/arm64/kernel/process.c:737 (T) context_switch kernel/sched/core.c:5396 [inline] __schedule+0x1414/0x2a28 kernel/sched/core.c:6785 __schedule_loop kernel/sched/core.c:6863 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6878 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6935 __mutex_lock_common+0xbd0/0x2190 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 nfsd_nl_listener_set_doit+0x110/0x127c fs/nfsd/nfsctl.c:1923 genl_family_rcv_msg_doit+0x1d8/0x2bc net/netlink/genetlink.c:1115 genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0x450/0x624 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x220/0x3fc net/netlink/af_netlink.c:2534 genl_rcv+0x38/0x50 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x60c/0x824 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x648/0x930 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg net/socket.c:727 [inline] ____sys_sendmsg+0x490/0x7b8 net/socket.c:2566 ___sys_sendmsg+0x204/0x278 net/socket.c:2620 __sys_sendmsg net/socket.c:2652 [inline] __do_sys_sendmsg net/socket.c:2657 [inline] __se_sys_sendmsg net/socket.c:2655 [inline] __arm64_sys_sendmsg+0x184/0x238 net/socket.c:2655 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 INFO: task syz.0.267:7918 blocked for more than 144 seconds. Not tainted 6.16.0-rc2-syzkaller-g9aa9b43d689e #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.267 state:D stack:0 pid:7918 tgid:7913 ppid:6523 task_flags:0x400140 flags:0x00000001 Call trace: __switch_to+0x414/0x834 arch/arm64/kernel/process.c:737 (T) context_switch kernel/sched/core.c:5396 [inline] __schedule+0x1414/0x2a28 kernel/sched/core.c:6785 __schedule_loop kernel/sched/core.c:6863 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6878 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6935 __mutex_lock_common+0xbd0/0x2190 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 nfsd_nl_listener_set_doit+0x110/0x127c fs/nfsd/nfsctl.c:1923 genl_family_rcv_msg_doit+0x1d8/0x2bc net/netlink/genetlink.c:1115 genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0x450/0x624 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x220/0x3fc net/netlink/af_netlink.c:2534 genl_rcv+0x38/0x50 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x60c/0x824 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x648/0x930 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg net/socket.c:727 [inline] ____sys_sendmsg+0x490/0x7b8 net/socket.c:2566 ___sys_sendmsg+0x204/0x278 net/socket.c:2620 __sys_sendmsg net/socket.c:2652 [inline] __do_sys_sendmsg net/socket.c:2657 [inline] __se_sys_sendmsg net/socket.c:2655 [inline] __arm64_sys_sendmsg+0x184/0x238 net/socket.c:2655 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 INFO: task syz.2.277:7961 blocked for more than 144 seconds. Not tainted 6.16.0-rc2-syzkaller-g9aa9b43d689e #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.277 state:D stack:0 pid:7961 tgid:7952 ppid:6516 task_flags:0x400140 flags:0x00000001 Call trace: __switch_to+0x414/0x834 arch/arm64/kernel/process.c:737 (T) context_switch kernel/sched/core.c:5396 [inline] __schedule+0x1414/0x2a28 kernel/sched/core.c:6785 __schedule_loop kernel/sched/core.c:6863 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6878 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6935 __mutex_lock_common+0xbd0/0x2190 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 nfsd_nl_listener_set_doit+0x110/0x127c fs/nfsd/nfsctl.c:1923 genl_family_rcv_msg_doit+0x1d8/0x2bc net/netlink/genetlink.c:1115 genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0x450/0x624 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x220/0x3fc net/netlink/af_netlink.c:2534 genl_rcv+0x38/0x50 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x60c/0x824 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x648/0x930 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg net/socket.c:727 [inline] ____sys_sendmsg+0x490/0x7b8 net/socket.c:2566 ___sys_sendmsg+0x204/0x278 net/socket.c:2620 __sys_sendmsg net/socket.c:2652 [inline] __do_sys_sendmsg net/socket.c:2657 [inline] __se_sys_sendmsg net/socket.c:2655 [inline] __arm64_sys_sendmsg+0x184/0x238 net/socket.c:2655 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 INFO: task syz.7.286:8007 blocked for more than 144 seconds. Not tainted 6.16.0-rc2-syzkaller-g9aa9b43d689e #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.7.286 state:D stack:0 pid:8007 tgid:8003 ppid:7946 task_flags:0x400140 flags:0x00000001 Call trace: __switch_to+0x414/0x834 arch/arm64/kernel/process.c:737 (T) context_switch kernel/sched/core.c:5396 [inline] __schedule+0x1414/0x2a28 kernel/sched/core.c:6785 __schedule_loop kernel/sched/core.c:6863 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6878 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6935 __mutex_lock_common+0xbd0/0x2190 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 nfsd_nl_listener_set_doit+0x110/0x127c fs/nfsd/nfsctl.c:1923 genl_family_rcv_msg_doit+0x1d8/0x2bc net/netlink/genetlink.c:1115 genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0x450/0x624 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x220/0x3fc net/netlink/af_netlink.c:2534 genl_rcv+0x38/0x50 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x60c/0x824 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x648/0x930 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg net/socket.c:727 [inline] ____sys_sendmsg+0x490/0x7b8 net/socket.c:2566 ___sys_sendmsg+0x204/0x278 net/socket.c:2620 __sys_sendmsg net/socket.c:2652 [inline] __do_sys_sendmsg net/socket.c:2657 [inline] __se_sys_sendmsg net/socket.c:2655 [inline] __arm64_sys_sendmsg+0x184/0x238 net/socket.c:2655 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 Showing all locks held in the system: 2 locks held by kworker/u8:1/13: 1 lock held by khungtaskd/32: #0: ffff80008f819e40 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330 4 locks held by kworker/u8:3/42: 3 locks held by kworker/u8:9/333: #0: ffff00019befb118 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:606 [inline] #0: ffff00019befb118 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1532 [inline] #0: ffff00019befb118 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1856 [inline] #0: ffff00019befb118 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x340/0x2a28 kernel/sched/core.c:6709 #1: ffff00019bee4388 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x380/0x608 kernel/sched/psi.c:987 #2: ffff0000f78f8768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6062 [inline] #2: ffff0000f78f8768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: cfg80211_wiphy_work+0xec/0x48c net/wireless/core.c:421 1 lock held by udevd/6133: 2 locks held by getty/6292: #0: ffff0000d6b010a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009b9be2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa4 drivers/tty/n_tty.c:2222 2 locks held by kworker/u8:11/6741: 2 locks held by syz.6.228/7843: #0: ffff8000928d82b0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008faf1488 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x110/0x127c fs/nfsd/nfsctl.c:1923 2 locks held by syz.1.261/7890: #0: ffff8000928d82b0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008faf1488 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x110/0x127c fs/nfsd/nfsctl.c:1923 2 locks held by syz.5.262/7901: #0: ffff8000928d82b0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008faf1488 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x110/0x127c fs/nfsd/nfsctl.c:1923 2 locks held by syz.0.267/7918: #0: ffff8000928d82b0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008faf1488 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x110/0x127c fs/nfsd/nfsctl.c:1923 2 locks held by syz.2.277/7961: #0: ffff8000928d82b0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008faf1488 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x110/0x127c fs/nfsd/nfsctl.c:1923 2 locks held by syz.7.286/8007: #0: ffff8000928d82b0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008faf1488 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x110/0x127c fs/nfsd/nfsctl.c:1923 2 locks held by syz.9.288/8069: #0: ffff8000928d82b0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008faf1488 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x110/0x127c fs/nfsd/nfsctl.c:1923 2 locks held by syz.8.287/8075: #0: ffff8000928d82b0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008faf1488 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x110/0x127c fs/nfsd/nfsctl.c:1923 2 locks held by kworker/u8:19/8366: 2 locks held by syz.1.353/8443: #0: ffff8000928d82b0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008faf1488 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x110/0x127c fs/nfsd/nfsctl.c:1923 2 locks held by syz.5.317/8458: #0: ffff8000928d82b0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008faf1488 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x110/0x127c fs/nfsd/nfsctl.c:1923 2 locks held by syz.6.366/8516: #0: ffff8000928d82b0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008faf1488 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x110/0x127c fs/nfsd/nfsctl.c:1923 2 locks held by syz.4.379/8568: #0: ffff8000928d82b0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008faf1488 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x110/0x127c fs/nfsd/nfsctl.c:1923 4 locks held by kworker/u8:23/8893: 1 lock held by syz.7.636/9618: #0: ffff0001189120e0 (&type->s_umount_key#62/1){+.+.}-{4:4}, at: alloc_super+0x1a0/0x80c fs/super.c:345 3 locks held by syz.3.634/9620: #0: ffff80008f64db50 (&ops->srcu#2){.+.+}-{0:0}, at: srcu_lock_acquire+0x18/0x54 include/linux/srcu.h:160 #1: ffff800092872a68 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #1: ffff800092872a68 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline] #1: ffff800092872a68 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x710/0x15dc net/core/rtnetlink.c:4054 #2: ffff80008f81f880 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x58/0x528 kernel/rcu/tree.c:3782 2 locks held by syz.9.638/9612: 1 lock held by syz.0.639/9623: =============================================