INFO: task kworker/0:1H:53 blocked for more than 143 seconds. Not tainted 6.4.0-syzkaller-01312-gb19edac5992d #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:1H state:D stack:26656 pid:53 ppid:2 flags:0x00004000 Workqueue: xfs-log/loop5 xlog_ioend_work 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+0xb0/0x310 kernel/time/timer.c:2143 ___down_common+0x33e/0x5e0 kernel/locking/semaphore.c:225 __down_common+0x64/0x250 kernel/locking/semaphore.c:246 down+0x84/0xc0 kernel/locking/semaphore.c:63 xfs_buf_lock+0x154/0x4b0 fs/xfs/xfs_buf.c:1119 xfs_buf_item_unpin+0x1cd/0x6c0 fs/xfs/xfs_buf_item.c:581 xfs_trans_committed_bulk+0x346/0x830 fs/xfs/xfs_trans.c:808 xlog_cil_committed+0x26d/0xe40 fs/xfs/xfs_log_cil.c:795 xlog_cil_process_committed+0x159/0x1a0 fs/xfs/xfs_log_cil.c:823 xlog_state_shutdown_callbacks+0x2ba/0x3b0 fs/xfs/xfs_log.c:538 xlog_force_shutdown+0x32c/0x390 fs/xfs/xfs_log.c:3837 xlog_ioend_work+0xad/0x100 fs/xfs/xfs_log.c:1429 process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2408 worker_thread+0xa63/0x1210 kernel/workqueue.c:2555 kthread+0x2b8/0x350 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 INFO: task syz-executor.5:17049 blocked for more than 144 seconds. Not tainted 6.4.0-syzkaller-01312-gb19edac5992d #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:23456 pid:17049 ppid:5039 flags:0x00004004 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 xlog_wait+0x16e/0x1e0 fs/xfs/xfs_log_priv.h:617 xlog_wait_on_iclog+0x307/0x4e0 fs/xfs/xfs_log.c:926 __xfs_trans_commit+0xb38/0x11d0 fs/xfs/xfs_trans.c:1021 xfs_sync_sb_buf+0x14f/0x1e0 fs/xfs/libxfs/xfs_sb.c:1112 xfs_ioc_setlabel fs/xfs/xfs_ioctl.c:1801 [inline] xfs_file_ioctl+0x1316/0x16a0 fs/xfs/xfs_ioctl.c:1899 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xf8/0x170 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f21d668c389 RSP: 002b:00007f21d7462168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f21d67abf80 RCX: 00007f21d668c389 RDX: 0000000020000000 RSI: 0000000041009432 RDI: 0000000000000004 RBP: 00007f21d66d7493 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc478fa21f R14: 00007f21d7462300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/13: #0: ffffffff8cf27530 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:522 1 lock held by rcu_tasks_trace/14: #0: ffffffff8cf278f0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:522 1 lock held by khungtaskd/28: #0: ffffffff8cf27360 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 2 locks held by kworker/0:1H/53: #0: ffff88802ce52538 ((wq_completion)xfs-log/loop5){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2381 #1: ffffc90000be7d20 ((work_completion)(&iclog->ic_end_io_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2383 2 locks held by getty/4753: #0: ffff8880286e7098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b1/0x1db0 drivers/tty/n_tty.c:2176 1 lock held by syz-executor.3/5036: #0: ffff8880777bc0e0 (&type->s_umount_key#49){++++}-{3:3}, at: deactivate_super+0xad/0xf0 fs/super.c:361 2 locks held by syz-executor.4/5041: 2 locks held by kworker/1:9/5475: #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2381 #1: ffffc9000642fd20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2383 3 locks held by kworker/0:10/5545: #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2381 #1: ffffc90006c37d20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2383 #2: ffffffff8cf2c9f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline] #2: ffffffff8cf2c9f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x46c/0x890 kernel/rcu/tree_exp.h:992 2 locks held by kworker/0:14/5551: #0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2381 #1: ffffc9000657fd20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2383 1 lock held by syz-executor.5/17049: #0: ffff88803aed4460 (sb_writers#14){.+.+}-{0:0}, at: mnt_want_write_file+0x61/0x200 fs/namespace.c:447 2 locks held by syz-executor.5/17163: #0: ffff8881433920e0 (&type->s_umount_key#75){+.+.}-{3:3}, at: deactivate_super+0xad/0xf0 fs/super.c:361 #1: ffffffff8cf2c9f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline] #1: ffffffff8cf2c9f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3a3/0x890 kernel/rcu/tree_exp.h:992 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.4.0-syzkaller-01312-gb19edac5992d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 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: 10847 Comm: kworker/u4:17 Not tainted 6.4.0-syzkaller-01312-gb19edac5992d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 Workqueue: phy12 ieee80211_iface_work RIP: 0010:arch_stack_walk+0x118/0x140 arch/x86/kernel/stacktrace.c:24 Code: ff 48 89 df e8 49 b7 08 00 48 85 c0 74 1e 4c 89 f7 48 89 c6 41 ff d5 84 c0 74 11 48 89 df e8 5f b8 08 00 83 bd 70 ff ff ff 00 <75> d5 65 48 8b 04 25 28 00 00 00 48 3b 45 d0 75 0f 48 83 c4 68 5b RSP: 0018:ffffc9000392f6a0 EFLAGS: 00000202 RAX: 0000000080000001 RBX: ffffc9000392f6a0 RCX: 0000000080000000 RDX: dffffc0000000000 RSI: ffffc90003928000 RDI: 0000000000000001 RBP: ffffc9000392f730 R08: ffffc9000392fc50 R09: 0000000000000000 R10: ffffc9000392f6f0 R11: dffffc0000000001 R12: ffff888024f10000 R13: ffffffff81799e20 R14: ffffc9000392f780 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8422ad56be CR3: 000000000cd30000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: stack_trace_save+0x117/0x1c0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4f/0x70 mm/kasan/common.c:52 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:521 ____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236 kasan_slab_free include/linux/kasan.h:162 [inline] slab_free_hook mm/slub.c:1781 [inline] slab_free_freelist_hook mm/slub.c:1807 [inline] slab_free mm/slub.c:3786 [inline] kmem_cache_free+0x297/0x520 mm/slub.c:3808 skb_kfree_head net/core/skbuff.c:903 [inline] skb_free_head net/core/skbuff.c:918 [inline] skb_release_data+0x637/0x850 net/core/skbuff.c:948 skb_release_all net/core/skbuff.c:1014 [inline] __kfree_skb net/core/skbuff.c:1028 [inline] kfree_skb_reason+0x193/0x380 net/core/skbuff.c:1064 kfree_skb include/linux/skbuff.h:1236 [inline] ieee80211_iface_work+0x264/0xd00 net/mac80211/iface.c:1650 process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2408 worker_thread+0xa63/0x1210 kernel/workqueue.c:2555 kthread+0x2b8/0x350 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308