INFO: task jfsCommit:106 blocked for more than 143 seconds. Not tainted 6.3.0-rc3-syzkaller-00362-g18940c888c85 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:jfsCommit state:D stack:26712 pid:106 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5307 [inline] __schedule+0x173b/0x4630 kernel/sched/core.c:6625 schedule+0xc3/0x180 kernel/sched/core.c:6701 io_schedule+0x8c/0x100 kernel/sched/core.c:8887 __lock_metapage+0x1f9/0x310 fs/jfs/jfs_metapage.c:50 lock_metapage fs/jfs/jfs_metapage.c:64 [inline] __get_metapage+0x556/0x10e0 fs/jfs/jfs_metapage.c:639 diIAGRead+0xcb/0x130 fs/jfs/jfs_imap.c:2662 diFree+0xa7e/0x2fb0 fs/jfs/jfs_imap.c:955 jfs_evict_inode+0x32d/0x440 fs/jfs/inode.c:156 evict+0x2a4/0x620 fs/inode.c:665 txUpdateMap+0x829/0x9e0 fs/jfs/jfs_txnmgr.c:2362 txLazyCommit fs/jfs/jfs_txnmgr.c:2659 [inline] jfs_lazycommit+0x47a/0xb70 fs/jfs/jfs_txnmgr.c:2727 kthread+0x270/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 INFO: task syz-executor.2:5113 blocked for more than 143 seconds. Not tainted 6.3.0-rc3-syzkaller-00362-g18940c888c85 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:19768 pid:5113 ppid:1 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5307 [inline] __schedule+0x173b/0x4630 kernel/sched/core.c:6625 schedule+0xc3/0x180 kernel/sched/core.c:6701 jfs_flush_journal+0x733/0xec0 fs/jfs/jfs_logmgr.c:1564 jfs_umount+0x170/0x3a0 fs/jfs/jfs_umount.c:58 jfs_put_super+0x8a/0x190 fs/jfs/super.c:194 generic_shutdown_super+0x134/0x340 fs/super.c:500 kill_block_super+0x7e/0xe0 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: 0033:0x7f3fb1a8d567 RSP: 002b:00007ffcfb6ea7c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f3fb1a8d567 RDX: 00007ffcfb6ea89b RSI: 000000000000000a RDI: 00007ffcfb6ea890 RBP: 00007ffcfb6ea890 R08: 00000000ffffffff R09: 00007ffcfb6ea660 R10: 00005555572c58b3 R11: 0000000000000246 R12: 00007f3fb1ae6b74 R13: 00007ffcfb6eb950 R14: 00005555572c5810 R15: 00007ffcfb6eb990 Showing all locks held in the system: 3 locks held by kworker/u4:0/9: #0: ffff8880b983be98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:539 #1: ffff8880b9828788 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:976 #2: ffffffff8cf253e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x40 include/linux/rcupdate.h:326 1 lock held by rcu_tasks_kthre/12: #0: ffffffff8cf255b0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:510 1 lock held by rcu_tasks_trace/13: #0: ffffffff8cf25db0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:510 1 lock held by khungtaskd/28: #0: ffffffff8cf253e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 2 locks held by jfsCommit/106: #0: ffff888023418920 (&(imap->im_aglock[index])){+.+.}-{3:3}, at: diFree+0x37c/0x2fb0 fs/jfs/jfs_imap.c:885 #1: ffff888071e566f8 (&jfs_ip->rdwrlock/1){.+.+}-{3:3}, at: diFree+0x398/0x2fb0 fs/jfs/jfs_imap.c:890 2 locks held by getty/4755: #0: ffff88802777d098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:244 #1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2177 1 lock held by syz-executor.2/5113: #0: ffff88803288e0e0 (&type->s_umount_key#67){++++}-{3:3}, at: deactivate_super+0xad/0xf0 fs/super.c:361 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.3.0-rc3-syzkaller-00362-g18940c888c85 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 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+0x270/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 11 Comm: kworker/u4:1 Not tainted 6.3.0-rc3-syzkaller-00362-g18940c888c85 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 Workqueue: phy9 ieee80211_iface_work RIP: 0010:lookup_object lib/debugobjects.c:195 [inline] RIP: 0010:debug_object_activate+0xd7/0x6d0 lib/debugobjects.c:667 Code: ef e8 6d fb aa fd 48 8b 5d 00 45 31 f6 eb 06 48 8b 1b 41 ff c6 48 85 db 74 3c 48 8d 6b 18 49 89 ec 49 c1 ec 03 43 80 3c 2c 00 <74> 08 48 89 ef e8 3f fb aa fd 4c 39 7d 00 0f 84 a4 00 00 00 48 89 RSP: 0018:ffffc90000107148 EFLAGS: 00000046 RAX: 1ffff1100631cdce RBX: ffff88807d000000 RCX: 0000000000000001 RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffc90000107020 RBP: ffff88807d000018 R08: dffffc0000000000 R09: 0000000000000003 R10: ffffffffffffffff R11: dffffc0000000001 R12: 1ffff1100fa00003 R13: dffffc0000000000 R14: 0000000000000005 R15: ffff888030c61880 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c016d8cdd0 CR3: 000000000cd30000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: debug_rcu_head_queue kernel/rcu/rcu.h:189 [inline] kvfree_call_rcu+0xa7/0x8d0 kernel/rcu/tree.c:3307 cfg80211_update_known_bss+0x166/0x9e0 cfg80211_bss_update+0x171/0x20d0 net/wireless/scan.c:1728 cfg80211_inform_single_bss_frame_data net/wireless/scan.c:2492 [inline] cfg80211_inform_bss_frame_data+0xcb7/0x2320 net/wireless/scan.c:2525 ieee80211_bss_info_update+0x801/0xf00 net/mac80211/scan.c:190 ieee80211_rx_bss_info net/mac80211/ibss.c:1120 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1609 [inline] ieee80211_ibss_rx_queued_mgmt+0x192f/0x2cf0 net/mac80211/ibss.c:1638 ieee80211_iface_process_skb net/mac80211/iface.c:1583 [inline] ieee80211_iface_work+0x7bd/0xd00 net/mac80211/iface.c:1637 process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2390 worker_thread+0xa63/0x1210 kernel/workqueue.c:2537 kthread+0x270/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308