rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-...!: (10500 ticks this GP) idle=85c4/1/0x4000000000000000 softirq=97517/107738 fqs=0
rcu: 	(t=10501 jiffies g=143673 q=300 ncpus=2)
rcu: rcu_preempt kthread timer wakeup didn't happen for 10500 jiffies! g143673 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=84177
rcu: rcu_preempt kthread starved for 10501 jiffies! g143673 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:24496 pid:16    tgid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5409 [inline]
 __schedule+0x17e8/0x4a50 kernel/sched/core.c:6746
 __schedule_loop kernel/sched/core.c:6823 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6838
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2582
 rcu_gp_fqs_loop+0x2df/0x1370 kernel/rcu/tree.c:1663
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:1862
 kthread+0x2f2/0x390 kernel/kthread.c:388
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
CPU: 0 PID: 24086 Comm: syz-executor.3 Not tainted 6.9.0-rc7-syzkaller-00136-gf4345f05c0df #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:get_current arch/x86/include/asm/current.h:49 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x70 kernel/kcov.c:206
Code: 8b 3d 4c f9 3e 0c 48 89 de 5b e9 23 2c 59 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0c 25 c0 d3 03 00 65 8b 15 30 cb 6d 7e f7 c2 00 01 ff 00
RSP: 0018:ffffc900034af9f8 EFLAGS: 00000202
RAX: ffffffff818a31dc RBX: 1ffff110172a8869 RCX: 0000000000040000
RDX: ffffc900143eb000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc900034afbf0 R08: ffffffff818a31ab R09: 1ffffffff1f51f45
R10: dffffc0000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff8880b9544348 R14: ffff8880b943f7c0 R15: 0000000000000001
FS:  00007f545ea066c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b33a2e000 CR3: 000000007dbbe000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 csd_lock_wait kernel/smp.c:311 [inline]
 smp_call_function_many_cond+0x18ac/0x2a00 kernel/smp.c:855
 clock_was_set+0x77e/0x830 kernel/time/hrtimer.c:977
 do_settimeofday64+0x488/0x650 kernel/time/timekeeping.c:1346
 __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+0x23c/0x280 kernel/time/posix-timers.c:1113
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f545dc7dd69
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f545ea060c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e3
RAX: ffffffffffffffda RBX: 00007f545ddabf80 RCX: 00007f545dc7dd69
RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000000
RBP: 00007f545dcca49e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f545ddabf80 R15: 00007ffc78ce7678
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 22077 Comm: syz-executor.2 Not tainted 6.9.0-rc7-syzkaller-00136-gf4345f05c0df #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:debug_object_activate+0x71/0x510 lib/debugobjects.c:695
Code: 24 40 b3 8a b5 41 48 c7 44 24 48 d8 b5 bc 8d 48 c7 44 24 50 10 38 b7 84 4c 8d 6c 24 40 49 c1 ed 03 43 c7 44 35 00 f1 f1 f1 f1 <43> c7 44 35 09 f3 f3 f3 f3 66 43 c7 44 35 0d f3 f3 43 c6 44 35 0f
RSP: 0018:ffffc90000a08c00 EFLAGS: 00000016
RAX: 12b59eb4b7bbcd00 RBX: 0000000000000000 RCX: ffff888067bc8000
RDX: 0000000080010001 RSI: ffffffff8bccb720 RDI: ffff88807795c340
RBP: ffffc90000a08d18 R08: ffffffff81838c2c R09: fffff52000141188
R10: dffffc0000000000 R11: fffff52000141188 R12: ffffc90000a08c60
R13: 1ffff92000141188 R14: dffffc0000000000 R15: ffff88807795c340
FS:  0000555558cd1480(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200000c0 CR3: 000000005d998000 CR4: 0000000000350ef0
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 debug_hrtimer_activate kernel/time/hrtimer.c:423 [inline]
 debug_activate kernel/time/hrtimer.c:478 [inline]
 enqueue_hrtimer+0x30/0x3c0 kernel/time/hrtimer.c:1090
 __run_hrtimer kernel/time/hrtimer.c:1709 [inline]
 __hrtimer_run_queues+0x6d5/0xd50 kernel/time/hrtimer.c:1756
 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1818
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x112/0x3f0 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
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5758
Code: 2b 00 74 08 4c 89 f7 e8 5a 2d 88 00 f6 44 24 61 02 0f 85 85 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc9000e84fbc0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92001d09f84 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffffffff8bcaca20 RDI: ffffffff8c1f8260
RBP: ffffc9000e84fd10 R08: ffffffff92f35537 R09: 1ffffffff25e6aa6
R10: dffffc0000000000 R11: fffffbfff25e6aa7 R12: 1ffff92001d09f80
R13: dffffc0000000000 R14: ffffc9000e84fc20 R15: 0000000000000246
 __might_fault+0xc6/0x120 mm/memory.c:6220
 _copy_from_user+0x2a/0xe0 lib/usercopy.c:14
 copy_from_user include/linux/uaccess.h:183 [inline]
 get_timespec64+0x97/0x280 kernel/time/time.c:877
 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1385 [inline]
 __se_sys_clock_nanosleep+0x1a5/0x3c0 kernel/time/posix-timers.c:1373
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9f568a9175
Code: 24 0c 89 3c 24 48 89 4c 24 18 e8 f6 b9 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 8b 74 24 0c 8b 3c 24 b8 e6 00 00 00 0f 05 <44> 89 c7 48 89 04 24 e8 4f ba ff ff 48 8b 04 24 48 83 c4 28 f7 d8
RSP: 002b:00007ffef7441af0 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 0000000000000131 RCX: 00007f9f568a9175
RDX: 00007ffef7441b30 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffef7441bbc R08: 0000000000000000 R09: 00007f9f576480b0
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000032
R13: 000000000010dbd8 R14: 000000000010dbab R15: 0000000000000003
 </TASK>