rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...!: (1 ticks this GP) idle=7964/1/0x4000000000000000 softirq=91833/91833 fqs=1
rcu: (detected by 1, t=10502 jiffies, g=138801, q=101 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 21075 Comm: syz.1.5261 Not tainted 6.10.0-syzkaller-12246-g786c8248dbd3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:_raw_spin_unlock_irqrestore+0xf8/0x140 kernel/locking/spinlock.c:195
Code: 00 00 74 01 fb bf 01 00 00 00 e8 b3 ef d0 f5 65 8b 05 f4 e5 71 74 85 c0 74 43 48 c7 04 24 0e 36 e0 45 4b c7 04 2c 00 00 00 00 <65> 48 8b 04 25 28 00 00 00 48 3b 44 24 40 75 2a 48 8d 65 d8 5b 41
RSP: 0018:ffffc90000007cc0 EFLAGS: 00000086
RAX: 0000000080010000 RBX: 1ffff92000000f9c RCX: 0000000000010001
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
RBP: ffffc90000007d50 R08: ffff8880b942c883 R09: 1ffff11017285910
R10: dffffc0000000000 R11: ffffed1017285911 R12: dffffc0000000000
R13: 1ffff92000000f98 R14: ffffc90000007ce0 R15: 0000000000000046
FS: 00007f4388f076c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2a23aa CR3: 0000000050ca4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x477/0xd50 kernel/time/hrtimer.c:1753
hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1815
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
__sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_release+0x658/0xa30 kernel/locking/lockdep.c:5784
Code: 3c 3b 00 74 08 4c 89 f7 e8 75 bb 87 00 f6 84 24 91 00 00 00 02 75 77 41 f7 c5 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 04 27 00 00 00 00 4b c7 44 27 08 00 00 00 00 65 48 8b 04 25
RSP: 0018:ffffc90003ebf260 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff920007d7e5e RCX: ffffc90003ebf203
RDX: 0000000000000001 RSI: ffffffff8bcae720 RDI: ffffffff8c1fca20
RBP: ffffc90003ebf390 R08: ffffffff8fae796f R09: 1ffffffff1f5cf2d
R10: dffffc0000000000 R11: fffffbfff1f5cf2e R12: 1ffff920007d7e58
R13: 0000000000000246 R14: ffffc90003ebf2f0 R15: dffffc0000000000
rcu_lock_release include/linux/rcupdate.h:336 [inline]
rcu_read_unlock include/linux/rcupdate.h:869 [inline]
pte_unmap include/linux/pgtable.h:115 [inline]
finish_fault+0xf0a/0x1480 mm/memory.c:4931
do_read_fault mm/memory.c:5065 [inline]
do_fault mm/memory.c:5191 [inline]
do_pte_missing mm/memory.c:3947 [inline]
handle_pte_fault+0x3b40/0x6eb0 mm/memory.c:5522
__handle_mm_fault mm/memory.c:5665 [inline]
handle_mm_fault+0xf0b/0x1800 mm/memory.c:5830
faultin_page mm/gup.c:1194 [inline]
__get_user_pages+0x6ec/0x16a0 mm/gup.c:1493
populate_vma_page_range+0x264/0x330 mm/gup.c:1932
__mm_populate+0x27a/0x460 mm/gup.c:2035
mm_populate include/linux/mm.h:3422 [inline]
vm_mmap_pgoff+0x2c3/0x3d0 mm/util.c:593
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: 0033:0x7f4388175f19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4388f07048 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f4388305f60 RCX: 00007f4388175f19
RDX: b635773f06ebbeee RSI: 0000000000b36000 RDI: 0000000020000000
RBP: 00007f43881e4e68 R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000008031 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f4388305f60 R15: 00007ffee60abbf8
rcu: rcu_preempt kthread starved for 10500 jiffies! g138801 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R running task stack:26448 pid:17 tgid:17 ppid:2 flags:0x00004000
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_timeout+0x1be/0x310 kernel/time/timer.c:2581
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2034
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2236
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
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 UID: 0 PID: 21070 Comm: syz.4.5260 Not tainted 6.10.0-syzkaller-12246-g786c8248dbd3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:csd_lock_wait kernel/smp.c:312 [inline]
RIP: 0010:smp_call_function_many_cond+0x1860/0x29d0 kernel/smp.c:856
Code: 45 8b 65 00 44 89 e6 83 e6 01 31 ff e8 69 14 0c 00 41 83 e4 01 49 bc 00 00 00 00 00 fc ff df 75 07 e8 14 10 0c 00 eb 38 f3 90 <42> 0f b6 04 23 84 c0 75 11 41 f7 45 00 01 00 00 00 74 1e e8 f8 0f
RSP: 0018:ffffc90009f97a40 EFLAGS: 00000246
RAX: ffffffff818772e8 RBX: 1ffff11017288c61 RCX: 0000000000040000
RDX: ffffc90016e93000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc90009f97c10 R08: ffffffff818772b7 R09: 1ffffffff1f5cf2d
R10: dffffc0000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff8880b9446308 R14: ffff8880b953fb40 R15: 0000000000000000
FS: 00007f3e934a26c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020003c80 CR3: 0000000063fd8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
clock_was_set+0x75c/0x810 kernel/time/hrtimer.c:972
do_settimeofday64+0x488/0x650 kernel/time/timekeeping.c:1474
__do_sys_clock_settime kernel/time/posix-timers.c:1129 [inline]
__se_sys_clock_settime kernel/time/posix-timers.c:1113 [inline]
__x64_sys_clock_settime+0x23a/0x280 kernel/time/posix-timers.c:1113
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: 0033:0x7f3e92775f19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3e934a2048 EFLAGS: 00000246 ORIG_RAX: 00000000000000e3
RAX: ffffffffffffffda RBX: 00007f3e92905f60 RCX: 00007f3e92775f19
RDX: 0000000000000000 RSI: 0000000020003c80 RDI: 0000000000000000
RBP: 00007f3e927e4e68 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f3e92905f60 R15: 00007ffe2b4df298