rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 GPs behind) idle=757c/1/0x4000000000000000 softirq=10155/10156 fqs=0
rcu: 	(detected by 1, t=10502 jiffies, g=10741, q=127 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5508 Comm: rm Not tainted 6.9.0-syzkaller-12277-g56fb6f92854f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:__sanitizer_cov_trace_cmp8+0x8/0x20 kernel/kcov.c:283
Code: 00 00 00 e9 ea fe ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 0c 24 <48> 89 f2 48 89 fe bf 06 00 00 00 e9 b8 fe ff ff 0f 1f 84 00 00 00
RSP: 0000:ffffc90000007e28 EFLAGS: 00000046
RAX: dffffc0000000000 RBX: 19afa88a00b3f547 RCX: ffffffff817aff86
RDX: 1ffff1100e50006c RSI: 17d9895554000000 RDI: 19afa88a00b3f547
RBP: 17d9895554000000 R08: 0000000000000006 R09: ffff888072800340
R10: ffff888072800340 R11: ffffffff8b2f36e0 R12: ffff8880b922cac0
R13: ffff888072800340 R14: ffff8880b922c9c0 R15: ffffffff88f99630
FS:  00007fbf63f72380(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555d800c2008 CR3: 0000000020f86000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __hrtimer_run_queues+0x416/0xcc0 kernel/time/hrtimer.c:1748
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1813
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x90/0xb0 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:stack_access_ok+0x0/0x270 arch/x86/kernel/unwind_orc.c:389
Code: 8b 85 30 ff ff ff e9 6f fe ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <41> 57 41 56 41 55 41 54 55 48 89 f5 53 48 89 fb 4c 8d 63 08 48 83
RSP: 0000:ffffc90003d57810 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffffc90003d57898 RCX: 0000000000000001
RDX: 0000000000000008 RSI: ffffc90003d57bd0 RDI: ffffc90003d57898
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000004
R10: 0000000000000001 R11: 0000000000000003 R12: ffffc90003d57bd0
R13: ffffc90003d57be8 R14: 0000000000000001 R15: 0000000000000001
 deref_stack_reg arch/x86/kernel/unwind_orc.c:403 [inline]
 unwind_next_frame+0x1b94/0x23a0 arch/x86/kernel/unwind_orc.c:648
 arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 unpoison_slab_object mm/kasan/common.c:312 [inline]
 __kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:338
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slub.c:3940 [inline]
 slab_alloc_node mm/slub.c:4000 [inline]
 kmem_cache_alloc_noprof+0x121/0x2f0 mm/slub.c:4007
 anon_vma_chain_alloc mm/rmap.c:142 [inline]
 __anon_vma_prepare+0xae/0x5e0 mm/rmap.c:195
 vmf_anon_prepare+0x11c/0x250 mm/memory.c:3245
 do_anonymous_page mm/memory.c:4457 [inline]
 do_pte_missing mm/memory.c:3901 [inline]
 handle_pte_fault mm/memory.c:5380 [inline]
 __handle_mm_fault+0x28ab/0x53f0 mm/memory.c:5523
 handle_mm_fault+0x476/0xa00 mm/memory.c:5688
 do_user_addr_fault+0x426/0xe50 arch/x86/mm/fault.c:1338
 handle_page_fault arch/x86/mm/fault.c:1481 [inline]
 exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1539
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7fbf64077d1c
Code: 75 17 31 ff 48 89 14 24 e8 fc f2 ff ff 48 8b 14 24 48 85 c0 74 64 45 31 f6 48 29 d0 48 89 15 eb 9d 12 00 4c 01 f0 48 83 c8 01 <48> 89 42 08 4c 01 35 01 a6 12 00 48 85 db 74 40 48 83 eb 20 48 83
RSP: 002b:00007ffffe5c42b0 EFLAGS: 00010202
RAX: 0000000000021001 RBX: 0000000000000000 RCX: 0000555d800e3000
RDX: 0000555d800c2000 RSI: 0000000000000000 RDI: 0000555d800e3000
RBP: 00007fbf641a1aa0 R08: 0000000000000000 R09: 00007fbf641a1d80
R10: 0000000000000037 R11: 0000000000000206 R12: 00007fbf641a1b00
R13: 0000000000000290 R14: 0000000000000000 R15: 0000555d800c2000
 </TASK>
rcu: rcu_preempt kthread starved for 10502 jiffies! g10741 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:27680 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xf15/0x5d00 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2581
 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2000
 rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2202
 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
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 5509 Comm: syz-executor.0 Not tainted 6.9.0-syzkaller-12277-g56fb6f92854f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:write_comp_data+0x0/0x90 kernel/kcov.c:230
Code: 48 8b 05 43 fc 75 7e 48 8b 80 10 16 00 00 c3 cc cc cc cc 0f 1f 80 00 00 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 0f fc 75 7e 65 8b 05 10 fc
RSP: 0018:ffffc90003d87938 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffff8880b9246740 RCX: ffffffff8181ac4b
RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000002 R12: ffffed1017248ce9
R13: 0000000000000001 R14: ffff8880b9246748 R15: ffff8880b933fdc0
FS:  00007f87f94216c0(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbf64117dd0 CR3: 000000007fbd6000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 csd_lock_wait kernel/smp.c:311 [inline]
 smp_call_function_many_cond+0x50b/0x1420 kernel/smp.c:855
 clock_was_set+0x646/0x850 kernel/time/hrtimer.c:972
 timekeeping_inject_offset+0x4d1/0x640 kernel/time/timekeeping.c:1398
 do_adjtimex+0x373/0xaa0 kernel/time/timekeeping.c:2447
 do_clock_adjtime kernel/time/posix-timers.c:1159 [inline]
 __do_sys_clock_adjtime+0x173/0x290 kernel/time/posix-timers.c:1171
 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: 0033:0x7f87f867dda9
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:00007f87f94210c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000131
RAX: ffffffffffffffda RBX: 00007f87f87ac050 RCX: 00007f87f867dda9
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007f87f86ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f87f87ac050 R15: 00007ffc6b2019e8
 </TASK>