rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: {
1-...D
} 2630 jiffies s: 3901 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: 17638 Comm: modprobe Not tainted 6.12.0-rc3-syzkaller-00051-g07b887f8236e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:io_serial_out+0x8f/0xb0 drivers/tty/serial/8250/8250_port.c:413
Code: 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 1c 66 03 5d 40 44 89 e8 89 da ee <5b> 5d 41 5c 41 5d c3 cc cc cc cc e8 b1 ef 0d ff eb a0 e8 3a f0 0d
RSP: 0018:ffffc900001b7f60 EFLAGS: 00000002
RAX: 0000000000000037 RBX: 00000000000003f8 RCX: 0000000000000000
RDX: 00000000000003f8 RSI: ffffffff82a06b75 RDI: ffffffff93635660
RBP: ffffffff93635620 R08: 0000000000000001 R09: 000000000000001f
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000037 R14: ffffffff82a06b10 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8881f5900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5c772af3b0 CR3: 0000000133b9c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
serial_out drivers/tty/serial/8250/8250.h:142 [inline]
serial8250_console_fifo_write drivers/tty/serial/8250/8250_port.c:3322 [inline]
serial8250_console_write+0xf9e/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
show_trace_log_lvl+0x15c/0x3d0 arch/x86/kernel/dumpstack.c:237
sched_show_task kernel/sched/core.c:7589 [inline]
sched_show_task+0x3f0/0x5f0 kernel/sched/core.c:7564
show_state_filter+0xee/0x320 kernel/sched/core.c:7634
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+0x17c3/0x38d0 drivers/usb/gadget/udc/dummy_hcd.c:1988
__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:1037 [inline]
sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1037
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:183 [inline]
RIP: 0010:write_comp_data+0x11/0x90 kernel/kcov.c:246
Code: cc cc cc cc 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 49 89 d2 49 89 f8 49 89 f1 65 48 8b 15 4f e4 ad 7e <65> 8b 05 50 e4 ad 7e a9 00 01 ff 00 74 1d f6 c4 01 74 67 a9 00 00
RSP: 0018:ffffc9000197f740 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00007f5c77441fff RCX: ffffffff86e3aca1
RDX: ffff8881404957c0 RSI: 00007f5c77441fff RDI: 0000000000000006
RBP: ffff888112da8400 R08: 0000000000000006 R09: 00007f5c77441fff
R10: ffffffffffffffff R11: 0000000000000000 R12: 0000000000000009
R13: ffffc9000197f878 R14: 000000000000000d R15: ffffc9000197f8b5
mas_next_slot+0x1a1/0x21b0 lib/maple_tree.c:4682
mas_find+0x2c6/0x530 lib/maple_tree.c:6059
vma_next include/linux/mm.h:1007 [inline]
validate_mm+0xeb/0x4d0 mm/vma.c:535
vms_complete_munmap_vmas+0x62c/0x9a0 mm/vma.c:1159
mmap_region+0x4d6/0x2900 mm/mmap.c:1533
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: 0033:0x7f5c77528b74
Code: 63 08 44 89 e8 5b 41 5c 41 5d c3 41 89 ca 41 f7 c1 ff 0f 00 00 74 0c c7 05 f5 46 01 00 16 00 00 00 eb 17 b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 0c f7 d8 89 05 dc 46 01 00 48 83 c8 ff c3 0f
RSP: 002b:00007ffc0ab4ccc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007ffc0ab4cd40 RCX: 00007f5c77528b74
RDX: 0000000000000001 RSI: 0000000000003000 RDI: 00007f5c7728a000
RBP: 00007ffc0ab4d0a0 R08: 0000000000000000 R09: 0000000000009000
R10: 0000000000000812 R11: 0000000000000246 R12: 00007f5c77505ac0
R13: 00007ffc0ab4d128 R14: 0000000000008442 R15: 0000000000000000
task:kworker/u8:5 state:R running task stack:28656 pid:18777 tgid:18777 ppid:274 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6861
__cond_resched+0x1b/0x30 kernel/sched/core.c:7199
_cond_resched include/linux/sched.h:2031 [inline]
stop_one_cpu+0x112/0x190 kernel/stop_machine.c:151
sched_exec+0x1dc/0x270 kernel/sched/core.c:5453
bprm_execve fs/exec.c:1838 [inline]
bprm_execve+0x46c/0x1950 fs/exec.c:1821
kernel_execve+0x2ef/0x3b0 fs/exec.c:2012
call_usermodehelper_exec_async+0x255/0x4c0 kernel/umh.c:110
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
task:modprobe state:R running task stack:24704 pid:18794 tgid:18794 ppid:28 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
task:kworker/u8:6 state:R running task stack:32568 pid:18797 tgid:18797 ppid:301 flags:0x00004000
Call Trace:
__switch_to_asm+0x70/0x70
task:modprobe state:R running task stack:25408 pid:18799 tgid:18799 ppid:274 flags:0x00000000
Call Trace:
Showing all locks held in the system:
2 locks held by kworker/u8:5/274:
#0: ffff888100089148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc9000174fd80 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
2 locks held by kworker/u8:6/301:
#0: ffff888100089148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc9000195fd80 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
2 locks held by getty/2606:
#0: ffff888108ae60a0 (&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
2 locks held by kworker/u8:8/5285:
#0: ffff888100089148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc90019217d80 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
3 locks held by syz-executor/17381:
#0: ffff88811466e3f8 (sb_writers#5){.+.+}-{0:0}, at: filename_create+0x10d/0x530 fs/namei.c:4019
#1: ffff88811ddfab38 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:850 [inline]
#1: ffff88811ddfab38 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: filename_create+0x1c2/0x530 fs/namei.c:4026
#2: ffff88811467a958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448
1 lock held by syz-executor/17411:
#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.0.175/17652:
#0: ffffffff88ec69f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x282/0x3b0 kernel/rcu/tree_exp.h:297
5 locks held by modprobe/17638:
#0: ffff88813fe61d58 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:122 [inline]
#0: ffff88813fe61d58 (&mm->mmap_lock){++++}-{3:3}, at: vm_mmap_pgoff+0x160/0x350 mm/util.c:586
#1: ffff888105aad230 (&dev->event_lock){..-.}-{2:2}, at: input_event drivers/input/input.c:397 [inline]
#1: ffff888105aad230 (&dev->event_lock){..-.}-{2:2}, at: input_event+0x70/0xa0 drivers/input/input.c:390
#2: ffffffff88ebb100 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#2: ffffffff88ebb100 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#2: ffffffff88ebb100 (rcu_read_lock){....}-{1:2}, at: input_pass_values+0x8b/0x8e0 drivers/input/input.c:118
#3: ffffffff893879d8 (kbd_event_lock){..-.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline]
#3: ffffffff893879d8 (kbd_event_lock){..-.}-{2:2}, at: kbd_event+0x8a/0x17a0 drivers/tty/vt/keyboard.c:1535
#4: ffffffff88ebb100 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#4: ffffffff88ebb100 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#4: ffffffff88ebb100 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6720
1 lock held by modprobe/18810:
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