INFO: task syz-executor.1:5035 blocked for more than 143 seconds. Not tainted 6.3.0-syzkaller-13466-gfc4354c6e5c2 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:20376 pid:5035 ppid:1 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5343 [inline] __schedule+0x187b/0x4900 kernel/sched/core.c:6669 schedule+0xc3/0x180 kernel/sched/core.c:6745 schedule_timeout+0x1bd/0x310 kernel/time/timer.c:2167 gfs2_gl_hash_clear+0x1a3/0x310 fs/gfs2/glock.c:2198 gfs2_put_super+0x827/0x890 fs/gfs2/super.c:642 generic_shutdown_super+0x134/0x340 fs/super.c:500 kill_block_super+0x84/0xf0 fs/super.c:1407 deactivate_locked_super+0xa4/0x110 fs/super.c:331 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1177 task_work_run+0x24a/0x300 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f2c1ae8d5d7 RSP: 002b:00007ffc7bb98258 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f2c1ae8d5d7 RDX: 00007ffc7bb9832b RSI: 000000000000000a RDI: 00007ffc7bb98320 RBP: 00007ffc7bb98320 R08: 00000000ffffffff R09: 00007ffc7bb980f0 R10: 0000555556841893 R11: 0000000000000246 R12: 00007f2c1aee6cdc R13: 00007ffc7bb993e0 R14: 0000555556841810 R15: 00007ffc7bb99420 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/13: #0: ffffffff8cf27670 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518 1 lock held by rcu_tasks_trace/14: #0: ffffffff8cf27a30 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518 1 lock held by khungtaskd/28: #0: ffffffff8cf274a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 2 locks held by getty/4742: #0: ffff888028dbe098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2176 1 lock held by syz-executor.1/5035: #0: ffff888031a6a0e0 (&type->s_umount_key#103){+.+.}-{3:3}, at: deactivate_super+0xad/0xf0 fs/super.c:361 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.3.0-syzkaller-13466-gfc4354c6e5c2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x187/0x300 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline] watchdog+0xec2/0xf00 kernel/hung_task.c:379 kthread+0x2b8/0x350 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 17609 Comm: kworker/u4:8 Not tainted 6.3.0-syzkaller-13466-gfc4354c6e5c2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 Workqueue: phy3 ieee80211_iface_work RIP: 0010:ieee80211_sta_get_rates+0x37c/0x720 Code: 6d 00 4c 8d 3c 40 4b 8d 5c bd 00 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 0f 85 1d 01 00 00 8b 1b <8b> 6c 24 4c 21 eb 89 df 89 ee e8 25 79 54 f7 39 eb 0f 85 98 00 00 RSP: 0018:ffffc90015e9f840 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 000000000000000d RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000040 RBP: 000000000000000a R08: ffffffff8a36f007 R09: fffffbfff1cab816 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888058493410 R13: ffff888058495f78 R14: 0000000000000001 R15: 0000000000000003 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f571464e280 CR3: 00000000789b6000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ieee80211_update_sta_info net/mac80211/ibss.c:1003 [inline] ieee80211_rx_bss_info net/mac80211/ibss.c:1118 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1609 [inline] ieee80211_ibss_rx_queued_mgmt+0x1133/0x2cf0 net/mac80211/ibss.c:1638 ieee80211_iface_process_skb net/mac80211/iface.c:1594 [inline] ieee80211_iface_work+0x7bd/0xd00 net/mac80211/iface.c:1648 process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2405 worker_thread+0xa63/0x1210 kernel/workqueue.c:2552 kthread+0x2b8/0x350 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308