rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-...D } 2654 jiffies s: 49273 root: 0x2/. rcu: blocking rcu_node structures (internal RCU debug): Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 2535 Comm: acpid Not tainted 6.12.0-rc4-syzkaller-00052-gc6d9e43954bf #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:io_serial_in+0x87/0xb0 drivers/tty/serial/8250/8250_port.c:407 Code: 68 b5 fe 48 8d 7d 40 44 89 e1 48 b8 00 00 00 00 00 fc ff df 48 89 fa d3 e3 48 c1 ea 03 80 3c 02 00 75 1a 66 03 5d 40 89 da ec <5b> 0f b6 c0 5d 41 5c c3 cc cc cc cc e8 78 ef 0d ff eb a2 e8 01 f0 RSP: 0018:ffffc900001b7f00 EFLAGS: 00000002 RAX: dffffc0000000060 RBX: 00000000000003fd RCX: 0000000000000000 RDX: 00000000000003fd RSI: ffffffff82a08a30 RDI: ffffffff93637660 RBP: ffffffff93637620 R08: 0000000000000001 R09: 000000000000001f R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000020 R14: fffffbfff26c6f1e R15: dffffc0000000000 FS: 00007f496fd59740(0000) GS:ffff8881f5900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c383a75 CR3: 0000000115a64000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: serial_in drivers/tty/serial/8250/8250.h:137 [inline] serial_lsr_in drivers/tty/serial/8250/8250.h:159 [inline] wait_for_lsr+0xda/0x180 drivers/tty/serial/8250/8250_port.c:2068 serial8250_console_fifo_write drivers/tty/serial/8250/8250_port.c:3315 [inline] serial8250_console_write+0xf5a/0x17c0 drivers/tty/serial/8250/8250_port.c:3393 console_emit_next_record kernel/printk/printk.c:3092 [inline] console_flush_all+0x800/0xc60 kernel/printk/printk.c:3180 __console_flush_and_unlock kernel/printk/printk.c:3239 [inline] console_unlock+0xd9/0x210 kernel/printk/printk.c:3279 vprintk_emit+0x424/0x6f0 kernel/printk/printk.c:2407 vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:68 _printk+0xc8/0x100 kernel/printk/printk.c:2432 printk_stack_address arch/x86/kernel/dumpstack.c:72 [inline] show_trace_log_lvl+0x1b7/0x3d0 arch/x86/kernel/dumpstack.c:285 sched_show_task kernel/sched/core.c:7604 [inline] sched_show_task+0x3f0/0x5f0 kernel/sched/core.c:7579 show_state_filter+0xee/0x320 kernel/sched/core.c:7649 k_spec drivers/tty/vt/keyboard.c:667 [inline] k_spec+0xed/0x150 drivers/tty/vt/keyboard.c:656 kbd_keycode drivers/tty/vt/keyboard.c:1522 [inline] kbd_event+0xcbd/0x17a0 drivers/tty/vt/keyboard.c:1541 input_handler_events_default+0x116/0x1b0 drivers/input/input.c:2549 input_pass_values+0x777/0x8e0 drivers/input/input.c:126 input_event_dispose drivers/input/input.c:352 [inline] input_handle_event+0xb30/0x14d0 drivers/input/input.c:369 input_event drivers/input/input.c:398 [inline] input_event+0x83/0xa0 drivers/input/input.c:390 hidinput_hid_event+0xa12/0x2410 drivers/hid/hid-input.c:1719 hid_process_event+0x4b7/0x5e0 drivers/hid/hid-core.c:1540 hid_input_array_field+0x535/0x710 drivers/hid/hid-core.c:1652 hid_process_report drivers/hid/hid-core.c:1694 [inline] hid_report_raw_event+0xa02/0x11c0 drivers/hid/hid-core.c:2040 __hid_input_report.constprop.0+0x341/0x440 drivers/hid/hid-core.c:2110 hid_irq_in+0x35e/0x870 drivers/hid/usbhid/hid-core.c:285 __usb_hcd_giveback_urb+0x389/0x6e0 drivers/usb/core/hcd.c:1650 usb_hcd_giveback_urb+0x396/0x450 drivers/usb/core/hcd.c:1734 dummy_timer+0x17f0/0x3930 drivers/usb/gadget/udc/dummy_hcd.c:1993 __run_hrtimer kernel/time/hrtimer.c:1691 [inline] __hrtimer_run_queues+0x20a/0xae0 kernel/time/hrtimer.c:1755 hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1772 handle_softirqs+0x206/0x8d0 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu kernel/softirq.c:637 [inline] irq_exit_rcu+0xac/0x110 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:avc_search_node security/selinux/avc.c:524 [inline] RIP: 0010:avc_lookup+0xdd/0x1d0 security/selinux/avc.c:552 Code: 2e ff 48 85 db 0f 84 c4 00 00 00 e8 9d 06 2e ff 48 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 74 08 3c 03 0f 8e bc 00 00 00 8b 2b <44> 89 ef 89 ee e8 f9 07 2e ff 41 39 ed 75 93 e8 6f 06 2e ff 48 8d RSP: 0018:ffffc90001847a48 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff88810db089c0 RCX: ffffffff8228529f RDX: ffff8881159b3a80 RSI: ffffffff8227ec23 RDI: ffffffff934e9c38 RBP: 000000000000004a R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000 R13: 000000000000004a R14: 000000000000000b R15: 0000000000000052 avc_has_perm_noaudit+0x97/0x3a0 security/selinux/avc.c:1150 avc_has_perm+0xc1/0x1c0 security/selinux/avc.c:1188 inode_has_perm+0x168/0x1d0 security/selinux/hooks.c:1676 file_has_perm+0x2e8/0x350 security/selinux/hooks.c:1766 selinux_revalidate_file_permission security/selinux/hooks.c:3620 [inline] selinux_file_permission+0x40d/0x580 security/selinux/hooks.c:3641 security_file_permission+0x3e/0x80 security/security.c:2841 rw_verify_area+0xaf/0x200 fs/read_write.c:470 vfs_read+0x13b/0xbd0 fs/read_write.c:560 ksys_read+0x1fa/0x260 fs/read_write.c:712 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: 0033:0x7f496fe23b6a Code: 00 3d 00 00 41 00 75 0d 50 48 8d 3d 2d 08 0a 00 e8 ea 7d 01 00 31 c0 e9 07 ff ff ff 64 8b 04 25 18 00 00 00 85 c0 75 1b 0f 05 <48> 3d 00 f0 ff ff 76 6c 48 8b 15 8f a2 0d 00 f7 d8 64 89 02 48 83 RSP: 002b:00007ffc571da2b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 0000563a6cfe4380 RCX: 00007f496fe23b6a RDX: 0000000000000018 RSI: 00007ffc571da2c0 RDI: 000000000000000b RBP: 0000000000000007 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000008 R11: 0000000000000246 R12: 000000000000000b R13: 00007ffc571da2c0 R14: 0000000000000001 R15: 000000000000000b ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:5984 __mark_inode_dirty+0x1f6/0xe60 fs/fs-writeback.c:2493 generic_update_time+0xcf/0xf0 fs/inode.c:2043 inode_update_time fs/inode.c:2056 [inline] touch_atime+0x4ee/0x5d0 fs/inode.c:2128 file_accessed include/linux/fs.h:2528 [inline] ext4_file_mmap+0x1c8/0x240 fs/ext4/file.c:797 call_mmap include/linux/fs.h:2172 [inline] mmap_region+0x110a/0x2910 mm/mmap.c:1447 do_mmap+0xc00/0xfc0 mm/mmap.c:496 vm_mmap_pgoff+0x1ba/0x350 mm/util.c:588 ksys_mmap_pgoff+0x32c/0x5c0 mm/mmap.c:542 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:86 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:79 [inline] __x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:79 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: 0033:0x7fc1dcdae033 RSP: 002b:00007fff2a88d9f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc1dcdae033 RDX: 0000000000000001 RSI: 0000000000400000 RDI: 0000000000000000 RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000246 R12: 00007fff2a88da60 R13: 00007fff2a88da68 R14: 0000000000000009 R15: 0000000000000000 task:syz-executor state:D stack:26144 pid:18268 tgid:18268 ppid:2642 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5328 [inline] __schedule+0x105f/0x34b0 kernel/sched/core.c:6690 __schedule_loop kernel/sched/core.c:6767 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6782 io_schedule+0xbf/0x130 kernel/sched/core.c:7574 bit_wait_io+0x15/0xe0 kernel/sched/wait_bit.c:209 __wait_on_bit+0x62/0x180 kernel/sched/wait_bit.c:49 out_of_line_wait_on_bit+0xda/0x110 kernel/sched/wait_bit.c:64 wait_on_bit_io include/linux/wait_bit.h:101 [inline] do_get_write_access+0x933/0x1270 fs/jbd2/transaction.c:1096 jbd2_journal_get_write_access+0x1d6/0x280 fs/jbd2/transaction.c:1245 __ext4_journal_get_write_access+0x6a/0x390 fs/ext4/ext4_jbd2.c:239 ext4_reserve_inode_write+0x13b/0x270 fs/ext4/inode.c:5773 __ext4_mark_inode_dirty+0x1a6/0x890 fs/ext4/inode.c:5947 ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:5984 __mark_inode_dirty+0x1f6/0xe60 fs/fs-writeback.c:2493 generic_update_time+0xcf/0xf0 fs/inode.c:2043 inode_update_time fs/inode.c:2056 [inline] touch_atime+0x4ee/0x5d0 fs/inode.c:2128 file_accessed include/linux/fs.h:2528 [inline] ext4_file_mmap+0x1c8/0x240 fs/ext4/file.c:797 call_mmap include/linux/fs.h:2172 [inline] mmap_region+0x110a/0x2910 mm/mmap.c:1447 do_mmap+0xc00/0xfc0 mm/mmap.c:496 vm_mmap_pgoff+0x1ba/0x350 mm/util.c:588 ksys_mmap_pgoff+0x32c/0x5c0 mm/mmap.c:542 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:86 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:79 [inline] __x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:79 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: 0033:0x7f9384d0e033 RSP: 002b:00007fffaca86b18 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9384d0e033 RDX: 0000000000000001 RSI: 0000000000400000 RDI: 0000000000000000 RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000246 R12: 00007fffaca86b80 R13: 00007fffaca86b88 R14: 0000000000000009 R15: 0000000000000000 Showing all locks held in the system: 6 locks held by kworker/1:1/36: #0: ffff8881062c3548 ((wq_completion)usb_hub_wq ){+.+.}-{0:0} , at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204 #1: ffffc90000267d80 ((work_completion)(&hub->events)){+.+.}-{0:0} , at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205 #2: ffff888109b67190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline] ffff888109b67190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849 #3: ffff888109b92508 (&port_dev->status_lock){+.+.}-{3:3} , at: usb_lock_port drivers/usb/core/hub.c:3206 [inline] , at: hub_port_connect drivers/usb/core/hub.c:5418 [inline] , at: hub_port_connect_change drivers/usb/core/hub.c:5661 [inline] , at: port_event drivers/usb/core/hub.c:5821 [inline] , at: hub_event+0x28aa/0x4f40 drivers/usb/core/hub.c:5903 #4: ffff888109360168 (hcd->address0_mutex){+.+.}-{3:3} , at: hub_port_connect drivers/usb/core/hub.c:5419 [inline] , at: hub_port_connect_change drivers/usb/core/hub.c:5661 [inline] , at: port_event drivers/usb/core/hub.c:5821 [inline] , at: hub_event+0x28d0/0x4f40 drivers/usb/core/hub.c:5903 #5: ffffffff899cc910 (ehci_cf_port_reset_rwsem){.+.+}-{3:3}, at: hub_port_reset+0x1a7/0x1e60 drivers/usb/core/hub.c:3021 5 locks held by acpid/2535: #0: ffffffff88ebb140 (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: avc_has_perm_noaudit+0x61/0x3a0 security/selinux/avc.c:1149 #1: ffff888134d14230 ( &dev->event_lock){..-.}-{2:2}, at: input_event drivers/input/input.c:397 [inline] &dev->event_lock){..-.}-{2:2}, at: input_event+0x70/0xa0 drivers/input/input.c:390 #2: ffffffff88ebb140 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] ffffffff88ebb140 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] ffffffff88ebb140 (rcu_read_lock){....}-{1:2}, at: input_pass_values+0x8b/0x8e0 drivers/input/input.c:118 #3: ffffffff89387a58 (kbd_event_lock){..-.}-{2:2} , at: spin_lock include/linux/spinlock.h:351 [inline] , at: kbd_event+0x8a/0x17a0 drivers/tty/vt/keyboard.c:1535 #4: ffffffff88ebb140 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6720 2 locks held by getty/2608: #0: ffff888113ff00a0 ( &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 3 locks held by syz-executor/2642: #0: ffff888112946220 (&vma->vm_lock->lock){++++}-{3:3} , at: vma_start_read include/linux/mm.h:704 [inline] , at: lock_vma_under_rcu+0x13e/0x980 mm/memory.c:6232 #1: ffff8881140144f0 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3162 #2: ffff888114018958 ( jbd2_handle ){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448 4 locks held by kworker/0:3/4926: 4 locks held by udevd/4936: #0: ffff88812d12c0a0 ( &p->lock ){+.+.}-{3:3}, at: seq_read_iter+0xd8/0x12b0 fs/seq_file.c:182 #1: ffff888113594488 (&of->mutex#2){+.+.}-{3:3}, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154 #2: ffff8881368751e8 (kn->active#18){++++}-{0:0}, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155 #3: ffff88811c7bc190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:1019 [inline] #3: ffff88811c7bc190 (&dev->mutex){....}-{3:3}, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142 5 locks held by kworker/1:5/5065: 4 locks held by udevd/6910: #0: ffff88812b1a28b8 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xd8/0x12b0 fs/seq_file.c:182 #1: ffff8881156b5488 (&of->mutex#2){+.+.}-{3:3}, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154 #2: ffff88811834bf08 (kn->active#18){++++}-{0:0}, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155 #3: ffff888137a9f190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:1019 [inline] #3: ffff888137a9f190 (&dev->mutex){....}-{3:3}, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142 5 locks held by kworker/0:8/11061: 2 locks held by kworker/1:7/12597: #0: ffff888100080948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204 #1: ffffc9000fed7d80 ((work_completion)(&fw_work->work)){+.+.}-{0:0} , at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205 5 locks held by kworker/1:2/18043: #0: ffff8881062c3548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204 #1: ffffc90010bb7d80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205 #2: ffff88810671e190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline] #2: ffff88810671e190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849 #3: ffff888119648190 (&dev->mutex ){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline] ){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005 #4: ffff888111489160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline] #4: ffff888111489160 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005 1 lock held by syz.1.3248/18264: #0: ffffffff88ec6a38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x282/0x3b0 kernel/rcu/tree_exp.h:297 1 lock held by syz.1.3248/18265: #0: ffffffff88ec6a38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x1a4/0x3b0 kernel/rcu/tree_exp.h:329 3 locks held by syz-executor/18267: #0: ffff888119f96758 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:122 [inline] #0: ffff888119f96758 (&mm->mmap_lock){++++}-{3:3}, at: vm_mmap_pgoff+0x160/0x350 mm/util.c:586 #1: ffff8881140143f8 (sb_writers#5){.+.+}-{0:0}, at: file_accessed include/linux/fs.h:2528 [inline] ffff8881140143f8 (sb_writers#5){.+.+}-{0:0}, at: ext4_file_mmap+0x1c8/0x240 fs/ext4/file.c:797 #2: ffff888114018958 (jbd2_handle){++++}-{0:0} , at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448 3 locks held by syz-executor/18268: #0: ffff888119f92698 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:122 [inline] (&mm->mmap_lock){++++}-{3:3}, at: vm_mmap_pgoff+0x160/0x350 mm/util.c:586 #1: ffff8881140143f8 (sb_writers#5){.+.+}-{0:0}, at: file_accessed include/linux/fs.h:2528 [inline] #1: ffff8881140143f8 (sb_writers#5){.+.+}-{0:0}, at: ext4_file_mmap+0x1c8/0x240 fs/ext4/file.c:797 #2: ffff888114018958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448 =============================================