INFO: task syz-executor:5817 blocked for more than 143 seconds. Not tainted 6.13.0-rc5-syzkaller-00006-g56e6a3499e14 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:14848 pid:5817 tgid:5817 ppid:1 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5369 [inline] __schedule+0x17fb/0x4be0 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6848 schedule_timeout+0xb0/0x290 kernel/time/sleep_timeout.c:75 do_wait_for_common kernel/sched/completion.c:95 [inline] __wait_for_common kernel/sched/completion.c:116 [inline] wait_for_common kernel/sched/completion.c:127 [inline] wait_for_completion+0x355/0x620 kernel/sched/completion.c:148 __flush_work+0xa37/0xc50 kernel/workqueue.c:4231 flush_work kernel/workqueue.c:4252 [inline] flush_delayed_work+0x169/0x1c0 kernel/workqueue.c:4274 invalidate_dquots fs/quota/dquot.c:576 [inline] dquot_disable+0x7a7/0x1cd0 fs/quota/dquot.c:2296 ocfs2_disable_quotas+0xf3/0x210 fs/ocfs2/super.c:963 ocfs2_dismount_volume+0x1bd/0x910 fs/ocfs2/super.c:1870 generic_shutdown_super+0x139/0x2d0 fs/super.c:642 kill_block_super+0x44/0x90 fs/super.c:1710 deactivate_locked_super+0xc4/0x130 fs/super.c:473 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373 task_work_run+0x24f/0x310 kernel/task_work.c:239 exit_task_work include/linux/task_work.h:43 [inline] do_exit+0xa2a/0x28e0 kernel/exit.c:938 do_group_exit+0x207/0x2c0 kernel/exit.c:1087 __do_sys_exit_group kernel/exit.c:1098 [inline] __se_sys_exit_group kernel/exit.c:1096 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1096 x64_sys_call+0x26a8/0x26b0 arch/x86/include/generated/asm/syscalls_64.h:232 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: 0033:0x7f40c0b85d29 RSP: 002b:00007ffc7b7992f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007f40c0c01919 RCX: 00007f40c0b85d29 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 000000000000000d R08: 00007ffc7b797096 R09: 00007ffc7b79a5b0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc7b79a5b0 R13: 00007f40c0c018f4 R14: 00007ffc7b79b670 R15: 000000000000001a Showing all locks held in the system: 3 locks held by kworker/0:1/9: 2 locks held by kworker/u8:0/11: 1 lock held by khungtaskd/30: #0: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #0: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6744 2 locks held by kworker/u8:5/1096: 2 locks held by getty/5580: #0: ffff888031ddd0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc9000331b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211 1 lock held by syz-executor/5815: #0: ffff888057ec20e0 (&type->s_umount_key#30){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] (&type->s_umount_key#30){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] (&type->s_umount_key#30){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 1 lock held by syz-executor/5817: #0: ffff8880206a20e0 (&type->s_umount_key#89){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff8880206a20e0 (&type->s_umount_key#89){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff8880206a20e0 (&type->s_umount_key#89){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 4 locks held by kworker/u9:4/5825: #0: ffff88807a674148 ((wq_completion)hci5){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline] #0: ffff88807a674148 ((wq_completion)hci5){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3310 #1: ffffc90003fbfd00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline] #1: ffffc90003fbfd00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3310 #2: ffff88804f50cd80 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x1ec/0x400 net/bluetooth/hci_sync.c:331 #3: ffff88804f50c078 (&hdev->lock){+.+.}-{4:4}, at: hci_abort_conn_sync+0x1e4/0x11f0 net/bluetooth/hci_sync.c:5584 1 lock held by syz-executor/6513: #0: ffff8880233e20e0 (&type->s_umount_key#30){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff8880233e20e0 (&type->s_umount_key#30){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff8880233e20e0 (&type->s_umount_key#30){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 1 lock held by syz.5.70/6781: #0: ffff888034d420e0 (&type->s_umount_key#30){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline] #0: ffff888034d420e0 (&type->s_umount_key#30){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz-executor/6830: #0: ffff88805a8060e0 (&type->s_umount_key#77){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff88805a8060e0 (&type->s_umount_key#77){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff88805a8060e0 (&type->s_umount_key#77){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 1 lock held by syz.4.130/6934: #0: ffff8880249ce0e0 (&type->s_umount_key#77){++++}-{4:4} , at: do_remount fs/namespace.c:3044 [inline] , at: path_mount+0xbdb/0xfa0 fs/namespace.c:3826 1 lock held by syz-executor/6955: #0: ffff88803baec0e0 (&type->s_umount_key#30){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff88803baec0e0 (&type->s_umount_key#30){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff88803baec0e0 (&type->s_umount_key#30){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 1 lock held by syz-executor/7164: #0: ffff888033af80e0 (&type->s_umount_key#77){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff888033af80e0 (&type->s_umount_key#77){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff888033af80e0 (&type->s_umount_key#77){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 1 lock held by syz-executor/7166: #0: ffff88804aae00e0 (&type->s_umount_key#30){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff88804aae00e0 (&type->s_umount_key#30){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff88804aae00e0 (&type->s_umount_key#30){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 1 lock held by syz.3.166/7544: #0: ffff8880206a20e0 (&type->s_umount_key#89){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline] #0: ffff8880206a20e0 (&type->s_umount_key#89){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz.4.228/8293: #0: ffff8880249ce0e0 (&type->s_umount_key#77){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline] #0: ffff8880249ce0e0 (&type->s_umount_key#77){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz.7.230/8302: 1 lock held by dhcpcd/8304: #0: ffff888059de3808 (&sb->s_type->i_mutex_key#9){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:818 [inline] #0: ffff888059de3808 (&sb->s_type->i_mutex_key#9){+.+.}-{4:4}, at: __sock_release net/socket.c:639 [inline] #0: ffff888059de3808 (&sb->s_type->i_mutex_key#9){+.+.}-{4:4}, at: sock_close+0x90/0x240 net/socket.c:1408 1 lock held by dhcpcd/8305: #0: ffff888059de1408 (&sb->s_type->i_mutex_key#9){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:818 [inline] #0: ffff888059de1408 (&sb->s_type->i_mutex_key#9){+.+.}-{4:4}, at: __sock_release net/socket.c:639 [inline] #0: ffff888059de1408 (&sb->s_type->i_mutex_key#9){+.+.}-{4:4}, at: sock_close+0x90/0x240 net/socket.c:1408 2 locks held by dhcpcd/8306: #0: ffff8880774f0208 (&sb->s_type->i_mutex_key#9){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:818 [inline] #0: ffff8880774f0208 (&sb->s_type->i_mutex_key#9){+.+.}-{4:4}, at: __sock_release net/socket.c:639 [inline] #0: ffff8880774f0208 (&sb->s_type->i_mutex_key#9){+.+.}-{4:4}, at: sock_close+0x90/0x240 net/socket.c:1408 #1: ffffffff8e93cff8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline] ffffffff8e93cff8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:976 1 lock held by dhcpcd/8307: #0: ffff888055b4d008 (&sb->s_type->i_mutex_key#9){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:818 [inline] #0: ffff888055b4d008 (&sb->s_type->i_mutex_key#9){+.+.}-{4:4}, at: __sock_release net/socket.c:639 [inline] #0: ffff888055b4d008 (&sb->s_type->i_mutex_key#9){+.+.}-{4:4}, at: sock_close+0x90/0x240 net/socket.c:1408 2 locks held by dhcpcd/8308: #0: ffff888055b4e808 (&sb->s_type->i_mutex_key#9){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:818 [inline] #0: ffff888055b4e808 (&sb->s_type->i_mutex_key#9){+.+.}-{4:4}, at: __sock_release net/socket.c:639 [inline] #0: ffff888055b4e808 (&sb->s_type->i_mutex_key#9){+.+.}-{4:4}, at: sock_close+0x90/0x240 net/socket.c:1408 #1: ffffffff8e93cff8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline] #1: ffffffff8e93cff8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:976 ============================================= NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc5-syzkaller-00006-g56e6a3499e14 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 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:234 [inline] watchdog+0xff6/0x1040 kernel/hung_task.c:397 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 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 11 Comm: kworker/u8:0 Not tainted 6.13.0-rc5-syzkaller-00006-g56e6a3499e14 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: events_unbound quota_release_workfn RIP: 0010:unwind_get_return_address+0x3b/0x90 arch/x86/kernel/unwind_orc.c:369 Code: 00 00 fc ff df 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 4b 83 3b 00 74 3a 48 83 c3 48 49 89 df 49 c1 ef 03 43 80 3c 37 00 <74> 08 48 89 df e8 0b a9 b7 00 48 8b 3b e8 f3 71 1e 00 85 c0 74 14 RSP: 0018:ffffc90000a18340 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffc90000a183a8 RCX: 0000000000000102 RDX: dffffc0000000000 RSI: ffffc90000100000 RDI: ffffc90000a18360 RBP: ffffc90000a183f0 R08: ffffc90000107ed0 R09: 0000000000000000 R10: ffffc90000a183b0 R11: fffff52000143078 R12: ffff88801bef3c00 R13: ffffffff818b3980 R14: dffffc0000000000 R15: 1ffff92000143075 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055557e2c75c8 CR3: 0000000032638000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: arch_stack_walk+0xfd/0x150 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:319 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4119 [inline] slab_alloc_node mm/slub.c:4168 [inline] kmem_cache_alloc_node_noprof+0x1d9/0x380 mm/slub.c:4220 __alloc_skb+0x1c3/0x440 net/core/skbuff.c:668 skb_copy+0x19d/0x9c0 net/core/skbuff.c:2159 mac80211_hwsim_tx_frame_no_nl+0x106b/0x18d0 drivers/net/wireless/virtual/mac80211_hwsim.c:1866 mac80211_hwsim_tx_frame+0x1cc/0x220 drivers/net/wireless/virtual/mac80211_hwsim.c:2215 mac80211_hwsim_beacon_tx+0x3bf/0x850 drivers/net/wireless/virtual/mac80211_hwsim.c:2315 __iterate_interfaces+0x297/0x570 net/mac80211/util.c:758 ieee80211_iterate_active_interfaces_atomic+0xd8/0x170 net/mac80211/util.c:794 mac80211_hwsim_beacon+0xd4/0x1f0 drivers/net/wireless/virtual/mac80211_hwsim.c:2345 __run_hrtimer kernel/time/hrtimer.c:1739 [inline] __hrtimer_run_queues+0x59b/0xd30 kernel/time/hrtimer.c:1803 hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1820 handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561 __do_softirq kernel/softirq.c:595 [inline] invoke_softirq kernel/softirq.c:435 [inline] __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662 irq_exit_rcu+0x9/0x30 kernel/softirq.c:678 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:console_trylock_spinning kernel/printk/printk.c:2061 [inline] RIP: 0010:vprintk_emit+0x700/0xa10 kernel/printk/printk.c:2431 Code: 00 e8 d4 f3 20 00 4c 8d bc 24 a0 00 00 00 4d 85 e4 75 07 e8 c2 f3 20 00 eb 06 e8 bb f3 20 00 fb 49 bc 00 00 00 00 00 fc ff df <48> c7 c7 a0 34 81 8e 31 f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00 RSP: 0018:ffffc90000107560 EFLAGS: 00000293 RAX: ffffffff817e7fd5 RBX: 0000000000000000 RCX: ffff88801bef3c00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000107670 R08: ffffffff817e7fae R09: 1ffffffff284e33e R10: dffffc0000000000 R11: fffffbfff284e33f R12: dffffc0000000000 R13: 1ffff92000020eb0 R14: ffffffff817e7e10 R15: ffffc90000107600 _printk+0xd5/0x120 kernel/printk/printk.c:2457 __ocfs2_abort+0x13d/0x230 fs/ocfs2/super.c:2587 ocfs2_start_trans+0x621/0x700 fs/ocfs2/journal.c:360 ocfs2_release_dquot+0x474/0xc30 fs/ocfs2/quota_global.c:761 quota_release_workfn+0x39f/0x650 fs/quota/dquot.c:840 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3310 worker_thread+0x870/0xd30 kernel/workqueue.c:3391 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