INFO: task syz-executor:2653 blocked for more than 143 seconds. Not tainted 6.12.0-rc3-syzkaller-00051-g07b887f8236e #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:24064 pid:2653 tgid:2653 ppid:1 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5322 [inline] __schedule+0x105f/0x34b0 kernel/sched/core.c:6682 __schedule_loop kernel/sched/core.c:6759 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6774 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6831 rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1084 __down_read_common kernel/locking/rwsem.c:1248 [inline] __down_read kernel/locking/rwsem.c:1261 [inline] down_read+0x124/0x330 kernel/locking/rwsem.c:1526 kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1159 d_revalidate fs/namei.c:868 [inline] d_revalidate fs/namei.c:865 [inline] lookup_fast+0x239/0x540 fs/namei.c:1693 walk_component+0x5b/0x5b0 fs/namei.c:2049 link_path_walk.part.0.constprop.0+0x669/0xd40 fs/namei.c:2418 link_path_walk fs/namei.c:2350 [inline] path_openat+0x228/0x2d60 fs/namei.c:3929 do_filp_open+0x1dc/0x430 fs/namei.c:3960 do_sys_openat2+0x17a/0x1e0 fs/open.c:1415 do_sys_open fs/open.c:1430 [inline] __do_sys_openat fs/open.c:1446 [inline] __se_sys_openat fs/open.c:1441 [inline] __x64_sys_openat+0x175/0x210 fs/open.c:1441 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd6c744d8f1 RSP: 002b:00007ffc39df73a0 EFLAGS: 00000287 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00000000000002a0 RCX: 00007fd6c744d8f1 RDX: 0000000000090800 RSI: 00007fd6c74c05b6 RDI: 00000000ffffff9c RBP: 00007ffc39df743c R08: 000000000001b530 R09: 00007fd6c8143080 R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000000 R13: 000000000008d1a2 R14: 000000000008cc9e R15: 00007ffc39df7490 INFO: task syz-executor:2654 blocked for more than 144 seconds. Not tainted 6.12.0-rc3-syzkaller-00051-g07b887f8236e #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:24080 pid:2654 tgid:2654 ppid:1 flags:0x00000006 Call Trace: context_switch kernel/sched/core.c:5322 [inline] __schedule+0x105f/0x34b0 kernel/sched/core.c:6682 __schedule_loop kernel/sched/core.c:6759 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6774 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6831 rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1084 __down_read_common kernel/locking/rwsem.c:1248 [inline] __down_read kernel/locking/rwsem.c:1261 [inline] down_read+0x124/0x330 kernel/locking/rwsem.c:1526 kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1159 d_revalidate fs/namei.c:868 [inline] d_revalidate fs/namei.c:865 [inline] lookup_fast+0x239/0x540 fs/namei.c:1693 walk_component+0x5b/0x5b0 fs/namei.c:2049 link_path_walk.part.0.constprop.0+0x669/0xd40 fs/namei.c:2418 link_path_walk fs/namei.c:2350 [inline] path_openat+0x228/0x2d60 fs/namei.c:3929 do_filp_open+0x1dc/0x430 fs/namei.c:3960 do_sys_openat2+0x17a/0x1e0 fs/open.c:1415 do_sys_open fs/open.c:1430 [inline] __do_sys_openat fs/open.c:1446 [inline] __se_sys_openat fs/open.c:1441 [inline] __x64_sys_openat+0x175/0x210 fs/open.c:1441 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f15a661d8f1 RSP: 002b:00007ffd755ac910 EFLAGS: 00000287 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 000000000000030d RCX: 00007f15a661d8f1 RDX: 0000000000090800 RSI: 00007f15a66905b6 RDI: 00000000ffffff9c RBP: 00007ffd755ac9ac R08: 000000000001b722 R09: 00007f15a730e080 R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000000 R13: 000000000008d65b R14: 000000000008d65b R15: 00007ffd755aca00 INFO: task syz-executor:2657 blocked for more than 144 seconds. Not tainted 6.12.0-rc3-syzkaller-00051-g07b887f8236e #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:24064 pid:2657 tgid:2657 ppid:1 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5322 [inline] __schedule+0x105f/0x34b0 kernel/sched/core.c:6682 __schedule_loop kernel/sched/core.c:6759 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6774 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6831 rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1084 __down_read_common kernel/locking/rwsem.c:1248 [inline] __down_read kernel/locking/rwsem.c:1261 [inline] down_read+0x124/0x330 kernel/locking/rwsem.c:1526 kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1159 d_revalidate fs/namei.c:868 [inline] d_revalidate fs/namei.c:865 [inline] lookup_fast+0x239/0x540 fs/namei.c:1693 walk_component+0x5b/0x5b0 fs/namei.c:2049 link_path_walk.part.0.constprop.0+0x669/0xd40 fs/namei.c:2418 link_path_walk fs/namei.c:2350 [inline] path_openat+0x228/0x2d60 fs/namei.c:3929 do_filp_open+0x1dc/0x430 fs/namei.c:3960 do_sys_openat2+0x17a/0x1e0 fs/open.c:1415 do_sys_open fs/open.c:1430 [inline] __do_sys_openat fs/open.c:1446 [inline] __se_sys_openat fs/open.c:1441 [inline] __x64_sys_openat+0x175/0x210 fs/open.c:1441 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3b6d52d8f1 RSP: 002b:00007fffe54e6760 EFLAGS: 00000287 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00000000000002cc RCX: 00007f3b6d52d8f1 RDX: 0000000000090800 RSI: 00007f3b6d5a05b6 RDI: 00000000ffffff9c RBP: 00007fffe54e67fc R08: 000000000001b5e0 R09: 00007f3b6d3aa080 R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000000 R13: 000000000008d009 R14: 000000000008d009 R15: 00007fffe54e6850 INFO: task syz-executor:2659 blocked for more than 145 seconds. Not tainted 6.12.0-rc3-syzkaller-00051-g07b887f8236e #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:23808 pid:2659 tgid:2659 ppid:1 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5322 [inline] __schedule+0x105f/0x34b0 kernel/sched/core.c:6682 __schedule_loop kernel/sched/core.c:6759 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6774 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6831 rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1084 __down_read_common kernel/locking/rwsem.c:1248 [inline] __down_read kernel/locking/rwsem.c:1261 [inline] down_read+0x124/0x330 kernel/locking/rwsem.c:1526 kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1159 d_revalidate fs/namei.c:868 [inline] d_revalidate fs/namei.c:865 [inline] lookup_fast+0x239/0x540 fs/namei.c:1693 walk_component+0x5b/0x5b0 fs/namei.c:2049 link_path_walk.part.0.constprop.0+0x669/0xd40 fs/namei.c:2418 link_path_walk fs/namei.c:2350 [inline] path_openat+0x228/0x2d60 fs/namei.c:3929 do_filp_open+0x1dc/0x430 fs/namei.c:3960 do_sys_openat2+0xb1/0x1e0 fs/open.c:1407 Showing all locks held in the system: 6 locks held by kworker/0:1/9: #0: ffff888105efad48 ((wq_completion)usb_hub_wq ){+.+.}-{0:0} , at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204 #1: ffffc9000009fd80 ((work_completion)(&hub->events)){+.+.}-{0:0} , at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205 #2: ffff888109bfc190 (&dev->mutex ){....}-{3:3} , at: device_lock include/linux/device.h:1014 [inline] , at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849 #3: ffff8881135ff190 (&dev->mutex ){....}-{3:3} , at: device_lock include/linux/device.h:1014 [inline] , at: usb_disconnect+0x10a/0x920 drivers/usb/core/hub.c:2295 #4: ffff8881316c1160 (&dev->mutex ){....}-{3:3} , at: device_lock include/linux/device.h:1014 [inline] , at: __device_driver_lock drivers/base/dd.c:1095 [inline] , at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1293 #5: ffffffff89bd7548 ( input_mutex){+.+.}-{3:3}, at: __input_unregister_device+0x136/0x450 drivers/input/input.c:2272 2 locks held by kworker/u8:0/11: #0: ffff888100089148 ((wq_completion)events_unbound ){+.+.}-{0:0} , at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204 #1: ffffc900000bfd80 ((work_completion)(&sub_info->work) ){+.+.}-{0:0} , at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205 1 lock held by khungtaskd/30: #0: ffffffff88ebb100 ( rcu_read_lock){....}-{1:2} , at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] , at: rcu_read_lock include/linux/rcupdate.h:849 [inline] , at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6720 2 locks held by getty/2609: #0: ffff888113cba0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243 #1: ffffc900000432f0 (&ldata->atomic_read_lock){+.+.}-{3:3} , at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211 4 locks held by udevd/4900: #0: ffff88811d387c30 (&p->lock ){+.+.}-{3:3} , at: seq_read_iter+0xd8/0x12b0 fs/seq_file.c:182 #1: ffff888114d66888 ( &of->mutex ){+.+.}-{3:3}, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154 #2: ffff88811acd9b48 ( kn->active#18 ){++++}-{0:0} , at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155 #3: ffff8881135ff190 ( &dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:1019 [inline] &dev->mutex){....}-{3:3}, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142 7 locks held by kworker/0:3/4917: 2 locks held by kworker/u8:1/7670: #0: ffff888100089148 ( (wq_completion)events_unbound){+.+.}-{0:0} , at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204 #1: ffffc9000fc7fd80 ((work_completion)(&sub_info->work)){+.+.}-{0:0} , at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205 1 lock held by syz.1.1229/9096: #0: ffffffff88ec69f8 ( rcu_state.exp_mutex){+.+.}-{3:3} , at: exp_funnel_lock+0x1a4/0x3b0 kernel/rcu/tree_exp.h:329 1 lock held by syz-executor/9112: #0: ffffffff88ec69f8 ( rcu_state.exp_mutex ){+.+.}-{3:3} , at: exp_funnel_lock+0x1a4/0x3b0 kernel/rcu/tree_exp.h:329 2 locks held by kworker/u8:4/9144: #0: ffff888100089148 ( (wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204 #1: ffffc900109cfd80 ( (work_completion)(&sub_info->work) ){+.+.}-{0:0} , at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205 1 lock held by modprobe/9190: ============================================= NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc3-syzkaller-00051-g07b887f8236e #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+0x116/0x1f0 lib/dump_stack.c:120 nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x29c/0x300 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+0xf0c/0x1240 kernel/hung_task.c:379 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 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: 9 Comm: kworker/0:1 Not tainted 6.12.0-rc3-syzkaller-00051-g07b887f8236e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: events drain_vmap_area_work RIP: 0010:deref_stack_reg arch/x86/kernel/unwind_orc.c:406 [inline] RIP: 0010:unwind_next_frame+0x160d/0x20c0 arch/x86/kernel/unwind_orc.c:648 Code: 0f 84 6b ed ff ff 48 89 ef e8 ef df ff ff 49 8d 7d 40 48 89 fa 48 89 c5 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 <0f> 84 82 f7 ff ff e8 98 c9 98 00 e9 78 f7 ff ff 48 8d 78 38 4c 89 RSP: 0018:ffffc9000009f698 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffc900000a0000 RDX: 1ffff92000013ee9 RSI: ffffc9000009fec0 RDI: ffffc9000009f748 RBP: ffff888100093a00 R08: ffffc9000009f73c R09: ffffffff8aaf863c R10: ffffc9000009f708 R11: 000000000000230c R12: ffffc9000009f758 R13: ffffc9000009f708 R14: ffffc9000009fef0 R15: ffffc9000009fee8 FS: 0000000000000000(0000) GS:ffff8881f5800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa8c1688fe4 CR3: 0000000133a0c000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: arch_stack_walk+0x95/0x100 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122 save_stack+0x162/0x1f0 mm/page_owner.c:156 __reset_page_owner+0x8d/0x400 mm/page_owner.c:297 reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1108 [inline] free_unref_page+0x58a/0xb50 mm/page_alloc.c:2638 kasan_depopulate_vmalloc_pte+0x63/0x80 mm/kasan/shadow.c:408 apply_to_pte_range mm/memory.c:2817 [inline] apply_to_pmd_range mm/memory.c:2861 [inline] apply_to_pud_range mm/memory.c:2897 [inline] apply_to_p4d_range mm/memory.c:2933 [inline] __apply_to_page_range+0x5fd/0xd30 mm/memory.c:2967 kasan_release_vmalloc+0xac/0xc0 mm/kasan/shadow.c:525 purge_vmap_node+0x3fb/0x930 mm/vmalloc.c:2204 __purge_vmap_area_lazy+0x9c5/0xc00 mm/vmalloc.c:2288 drain_vmap_area_work+0x27/0x40 mm/vmalloc.c:2322 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244