INFO: task syz-executor:6411 blocked for more than 144 seconds. Not tainted 6.11.0-rc7-syzkaller-g5f5673607153 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:0 pid:6411 tgid:6411 ppid:1 flags:0x0000000d Call trace: __switch_to+0x420/0x6dc arch/arm64/kernel/process.c:603 context_switch kernel/sched/core.c:5188 [inline] __schedule+0x13d4/0x2418 kernel/sched/core.c:6529 __schedule_loop kernel/sched/core.c:6606 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6621 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6678 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:800 [inline] vfs_unlink+0xd8/0x534 fs/namei.c:4411 do_unlinkat+0x4d0/0x700 fs/namei.c:4486 __do_sys_unlinkat fs/namei.c:4529 [inline] __se_sys_unlinkat fs/namei.c:4522 [inline] __arm64_sys_unlinkat+0xc8/0xf8 fs/namei.c:4522 __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+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: 3 locks held by kworker/0:1/10: 3 locks held by kworker/u8:1/13: 1 lock held by khungtaskd/31: #0: ffff80008f74dfa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:325 3 locks held by kworker/u8:2/43: 5 locks held by kworker/u9:0/53: #0: ffff0000d932c948 ((wq_completion)hci1){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff800097d57c20 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3205 #2: ffff0000e8fd0d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x194/0x34c net/bluetooth/hci_sync.c:327 #3: ffff0000e8fd0078 (&hdev->lock){+.+.}-{3:3}, at: hci_abort_conn_sync+0x200/0xbb0 net/bluetooth/hci_sync.c:5564 #4: ffff800092598b48 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1957 [inline] #4: ffff800092598b48 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_failed+0x154/0x350 net/bluetooth/hci_conn.c:1265 3 locks held by kworker/u8:5/597: #0: ffff0000c0031948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff80009ca97c20 ((crda_timeout).work){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3205 #2: ffff800092437ee8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 3 locks held by kworker/u8:7/668: 3 locks held by kworker/u8:8/5250: 5 locks held by kworker/u9:1/5979: #0: ffff0000d932b148 ((wq_completion)hci0){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff80009c377c20 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3205 #2: ffff0000c2eb4d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x194/0x34c net/bluetooth/hci_sync.c:327 #3: ffff0000c2eb4078 (&hdev->lock){+.+.}-{3:3}, at: hci_abort_conn_sync+0x200/0xbb0 net/bluetooth/hci_sync.c:5564 #4: ffff800092598b48 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1957 [inline] #4: ffff800092598b48 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_failed+0x154/0x350 net/bluetooth/hci_conn.c:1265 1 lock held by jbd2/nvme0n1p2-/5992: 2 locks held by syslogd/6011: 4 locks held by udevd/6026: 2 locks held by dhcpcd/6079: 2 locks held by getty/6176: #0: ffff0000d264b0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009b50e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211 1 lock held by syz-executor/6398: 4 locks held by kworker/1:4/6401: #0: ffff0000c0028948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff80009bb27c20 (reg_work){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3205 #2: ffff800092437ee8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 #3: ffff0000c2c80768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: wiphy_lock include/net/cfg80211.h:6014 [inline] #3: ffff0000c2c80768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: reg_process_self_managed_hints+0xcc/0x1c0 net/wireless/reg.c:3208 2 locks held by udevd/6404: 3 locks held by syz-executor/6411: #0: ffff0000d1c54420 (sb_writers#18){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:515 #1: ffff0000ee9f8148 (&type->i_mutex_dir_key#13/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:835 [inline] #1: ffff0000ee9f8148 (&type->i_mutex_dir_key#13/1){+.+.}-{3:3}, at: do_unlinkat+0x2dc/0x700 fs/namei.c:4473 #2: ffff0000db7e0148 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:800 [inline] #2: ffff0000db7e0148 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}, at: vfs_unlink+0xd8/0x534 fs/namei.c:4411 2 locks held by kworker/0:3/6413: 4 locks held by kworker/u9:2/6414: #0: ffff0000d932f948 ((wq_completion)hci3){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff80009b4f7c20 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3205 #2: ffff0000da998d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x194/0x34c net/bluetooth/hci_sync.c:327 #3: ffff0000da998078 (&hdev->lock){+.+.}-{3:3}, at: hci_abort_conn_sync+0x200/0xbb0 net/bluetooth/hci_sync.c:5564 1 lock held by syz-executor/6418: 5 locks held by kworker/u9:3/6419: #0: ffff0000d932e148 ((wq_completion)hci2){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff80009b4b7c20 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3205 #2: ffff0000e8fd4d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x194/0x34c net/bluetooth/hci_sync.c:327 #3: ffff0000e8fd4078 (&hdev->lock){+.+.}-{3:3}, at: hci_abort_conn_sync+0x200/0xbb0 net/bluetooth/hci_sync.c:5564 #4: ffff800092598b48 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1957 [inline] #4: ffff800092598b48 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_failed+0x154/0x350 net/bluetooth/hci_conn.c:1265 2 locks held by syz-executor/6422: 5 locks held by kworker/u9:6/6425: #0: ffff0000edbc1148 ((wq_completion)hci5){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff80009b3e7c20 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3205 #2: ffff0000ecd44d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x194/0x34c net/bluetooth/hci_sync.c:327 #3: ffff0000ecd44078 (&hdev->lock){+.+.}-{3:3}, at: hci_abort_conn_sync+0x200/0xbb0 net/bluetooth/hci_sync.c:5564 #4: ffff800092598b48 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1957 [inline] #4: ffff800092598b48 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_failed+0x154/0x350 net/bluetooth/hci_conn.c:1265 2 locks held by bch-reclaim/loo/6631: 6 locks held by syz.1.17/6638: 3 locks held by kworker/u8:10/6935: #0: ffff0000d15f7948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff8000a3f47c20 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3205 #2: ffff800092437ee8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 2 locks held by syz.1.198/7398: 3 locks held by kworker/u8:12/7450: #0: ffff0000c0031948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff8000a0317c20 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3205 #2: ffff800092437ee8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 4 locks held by kworker/u8:14/7452: 2 locks held by syz-executor/7453: 2 locks held by kworker/u8:15/7454: 3 locks held by kworker/u8:17/7457: =============================================