INFO: task syz.1.308:6862 blocked for more than 143 seconds. Not tainted 6.11.0-syzkaller-02574-ga430d95c5efa #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.308 state:D stack:24864 pid:6862 tgid:6860 ppid:6085 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5188 [inline] __schedule+0x17ae/0x4a10 kernel/sched/core.c:6529 __schedule_loop kernel/sched/core.c:6606 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6621 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678 rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline] __down_read_common kernel/locking/rwsem.c:1250 [inline] __down_read kernel/locking/rwsem.c:1263 [inline] down_read+0x705/0xa40 kernel/locking/rwsem.c:1528 __super_lock fs/super.c:58 [inline] super_lock+0x27c/0x400 fs/super.c:120 user_get_super+0xd2/0x180 fs/super.c:1000 quotactl_block fs/quota/quota.c:890 [inline] __do_sys_quotactl fs/quota/quota.c:955 [inline] __se_sys_quotactl+0x527/0xa30 fs/quota/quota.c:917 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fce3e17def9 RSP: 002b:00007fce3dbff038 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3 RAX: ffffffffffffffda RBX: 00007fce3e335f80 RCX: 00007fce3e17def9 RDX: 0000000000000000 RSI: 0000000020000240 RDI: ffffffff80000801 RBP: 00007fce3e1f0b76 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000020000f00 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fce3e335f80 R15: 00007ffca74e6e78 Showing all locks held in the system: 1 lock held by khungtaskd/30: #0: ffffffff8e738660 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline] #0: ffffffff8e738660 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline] #0: ffffffff8e738660 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6626 3 locks held by kworker/u8:6/2563: 3 locks held by kworker/u8:7/2573: #0: ffff8880302cc948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] #0: ffff8880302cc948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc900094cfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] #1: ffffc900094cfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffffffff8faadb88 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4196 3 locks held by kworker/u8:8/4095: 3 locks held by kworker/u8:9/4320: #0: ffff8880b883e718 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:560 #1: ffff8880b8828948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:989 #2: ffff888044040768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: wiphy_lock include/net/cfg80211.h:6014 [inline] #2: ffff888044040768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: cfg80211_wiphy_work+0xd9/0x490 net/wireless/core.c:426 2 locks held by getty/4979: #0: ffff8880309e20a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc9000312b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211 3 locks held by kworker/u9:10/5245: #0: ffff888049388948 ((wq_completion)hci7){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] #0: ffff888049388948 ((wq_completion)hci7){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc90003d2fd00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] #1: ffffc90003d2fd00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffff8880496b8d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x1ec/0x400 net/bluetooth/hci_sync.c:327 2 locks held by syz.1.55/5692: #0: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 #1: ffffffff8eb4e868 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xb2/0x530 fs/jfs/jfs_logmgr.c:1444 2 locks held by syz.0.269/6613: #0: ffff888060b6c420 (sb_writers#3){.+.+}-{0:0}, at: direct_splice_actor+0x49/0x220 fs/splice.c:1163 #1: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #1: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz.1.308/6862: #0: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 2 locks held by syz-executor/6871: #0: ffff88804c32e0e0 (&type->s_umount_key#77){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff88804c32e0e0 (&type->s_umount_key#77){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff88804c32e0e0 (&type->s_umount_key#77){++++}-{3:3}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 #1: ffffffff8eb4e868 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xb2/0x530 fs/jfs/jfs_logmgr.c:1444 1 lock held by syz.4.310/6965: #0: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz.1.330/7075: #0: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz.1.330/7096: #0: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz.3.327/7247: #0: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz.3.327/7262: #0: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 2 locks held by syz-executor/7459: #0: ffff88807b5720e0 (&type->s_umount_key#77){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff88807b5720e0 (&type->s_umount_key#77){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff88807b5720e0 (&type->s_umount_key#77){++++}-{3:3}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 #1: ffffffff8eb4e868 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xb2/0x530 fs/jfs/jfs_logmgr.c:1444 1 lock held by syz.1.335/7490: #0: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz.1.335/7492: #0: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz.0.361/7489: #0: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz.0.361/7495: #0: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz.2.411/7662: #0: ffff88804c32e0e0 (&type->s_umount_key#77){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff88804c32e0e0 (&type->s_umount_key#77){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz.1.419/7688: #0: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz.1.419/7690: #0: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz.2.481/8045: #0: ffff88804c32e0e0 (&type->s_umount_key#77){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff88804c32e0e0 (&type->s_umount_key#77){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz.4.507/8118: #0: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz.4.507/8132: #0: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz.1.510/8128: #0: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff888062ae00e0 (&type->s_umount_key#77){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz-executor/8169: #0: ffffffff8faadb88 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffffffff8faadb88 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6643 1 lock held by syz-executor/8178: #0: ffffffff8faadb88 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffffffff8faadb88 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6643 1 lock held by syz-executor/8180: #0: ffffffff8faadb88 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffffffff8faadb88 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6643 1 lock held by syz.3.525/8184: #0: ffff88807b5720e0 (&type->s_umount_key#77){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff88807b5720e0 (&type->s_umount_key#77){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 2 locks held by syz-executor/8253: #0: ffffffff8faadb88 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffffffff8faadb88 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6643 #1: ffffffff8e73da38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:296 [inline] #1: ffffffff8e73da38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:958 2 locks held by syz.2.531/8341: 1 lock held by dhcpcd/8356: #0: ffff88803715fa08 (&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline] #0: ffff88803715fa08 (&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: __sock_release net/socket.c:658 [inline] #0: ffff88803715fa08 (&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: sock_close+0x90/0x240 net/socket.c:1427 ============================================= NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-syzkaller-02574-ga430d95c5efa #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Call Trace: __dump_stack lib/dump_stack.c:93 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline] watchdog+0xff4/0x1040 kernel/hung_task.c:379 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 2563 Comm: kworker/u8:6 Not tainted 6.11.0-syzkaller-02574-ga430d95c5efa #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Workqueue: events_unbound cfg80211_wiphy_work RIP: 0010:filter_irq_stacks+0x4f/0xa0 kernel/stacktrace.c:397 Code: f0 84 bd 8b 48 89 fb eb 0c 49 ff c7 48 83 c3 08 4d 39 fc 74 4f 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 <74> 08 48 89 df e8 e7 6a 78 00 4b 8b 04 fe 48 39 e8 72 0c 48 c7 c1 RSP: 0018:ffffc9000905f4d8 EFLAGS: 00000246 RAX: 1ffff9200120beb7 RBX: ffffc9000905f5b8 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 000000000000000d RDI: ffffc9000905f570 RBP: ffffffff8bc00230 R08: ffffffff814152d3 R09: ffffffff81413e12 R10: 0000000000000002 R11: ffff88802fd55a00 R12: 000000000000000d R13: ffffffff8bbd84f0 R14: ffffc9000905f570 R15: 0000000000000009 FS: 0000000000000000(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005602414cd680 CR3: 0000000070fdc000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: stack_depot_save_flags+0x29/0x830 lib/stackdepot.c:609 kasan_save_stack mm/kasan/common.c:48 [inline] kasan_save_track+0x51/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579 poison_slab_object+0xe0/0x150 mm/kasan/common.c:240 __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2250 [inline] slab_free mm/slub.c:4474 [inline] kfree+0x149/0x360 mm/slub.c:4595 ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1580 [inline] ieee80211_ibss_rx_queued_mgmt+0x1b1e/0x2d70 net/mac80211/ibss.c:1606 ieee80211_iface_process_skb net/mac80211/iface.c:1603 [inline] ieee80211_iface_work+0x8a5/0xf20 net/mac80211/iface.c:1657 cfg80211_wiphy_work+0x2db/0x490 net/wireless/core.c:440 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312 worker_thread+0x870/0xd30 kernel/workqueue.c:3393 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244