rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 1-...0: (1 GPs behind) idle=d2f/1/0x4000000000000000 softirq=4869/4873 fqs=2100 (detected by 0, t=10505 jiffies, g=3637, q=348) Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 3518 Comm: syz-executor155 Not tainted 5.15.156-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:debug_deactivate+0x3/0x1e0 kernel/time/hrtimer.c:480 Code: 43 c9 10 00 0f 0b e9 0b ff ff ff e8 37 c9 10 00 e8 aa fa 90 ff e9 b7 fc ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 55 41 56 <53> 48 89 fb e8 14 c9 10 00 48 89 df 48 c7 c6 20 bc 8c 8a e8 45 de RSP: 0018:ffffc90000dd0d48 EFLAGS: 00000046 RAX: ffffffff816f6369 RBX: ffff8880b9b2a2c8 RCX: ffff888022c80000 RDX: 0000000000010002 RSI: 0000000000000001 RDI: ffff88807915db40 RBP: ffffc90000dd0eb0 R08: ffffffff816f635c R09: ffff88807915db48 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880b9b2a200 R13: ffff8880b9b2a280 R14: ffff88807915db40 R15: dffffc0000000000 FS: 00005555570d4380(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555570d4ca8 CR3: 0000000019cb3000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __run_hrtimer kernel/time/hrtimer.c:1654 [inline] __hrtimer_run_queues+0x31d/0xcf0 kernel/time/hrtimer.c:1750 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1812 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline] __sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102 sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:unwind_next_frame+0x14f/0x1fa0 Code: 83 15 00 00 49 8d 6f 35 49 89 ec 49 c1 ec 03 41 0f b6 04 14 84 c0 0f 85 f1 16 00 00 4c 0f be 6d 00 48 8b 44 24 28 80 3c 10 00 <48> 8b 5c 24 08 74 12 48 89 df e8 c2 98 91 00 48 ba 00 00 00 00 00 RSP: 0018:ffffc90002c97488 EFLAGS: 00000246 RAX: 1ffff92000592ebd RBX: 0000000000000000 RCX: ffffffff8a272900 RDX: dffffc0000000000 RSI: ffffc90002c98000 RDI: ffffffff8138883b RBP: ffffc90002c975d5 R08: dffffc0000000001 R09: ffffc90002c975a0 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000592eba R13: 0000000000000000 R14: ffffffff8138a91f R15: ffffc90002c975a0 __unwind_start+0x59d/0x720 arch/x86/kernel/unwind_orc.c:704 unwind_start arch/x86/include/asm/unwind.h:60 [inline] arch_stack_walk+0xdb/0x140 arch/x86/kernel/stacktrace.c:24 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] ____kasan_kmalloc+0xba/0xf0 mm/kasan/common.c:513 kasan_kmalloc include/linux/kasan.h:264 [inline] __kmalloc+0x168/0x300 mm/slub.c:4407 kmalloc include/linux/slab.h:596 [inline] kzalloc include/linux/slab.h:721 [inline] lsm_cred_alloc security/security.c:539 [inline] security_prepare_creds+0x48/0x130 security/security.c:1725 prepare_creds+0x459/0x610 kernel/cred.c:291 copy_creds+0x149/0xca0 kernel/cred.c:365 copy_process+0x8a7/0x3ef0 kernel/fork.c:2070 kernel_clone+0x210/0x960 kernel/fork.c:2604 __do_sys_clone kernel/fork.c:2721 [inline] __se_sys_clone kernel/fork.c:2705 [inline] __x64_sys_clone+0x23f/0x290 kernel/fork.c:2705 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fbc98444e63 Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00 RSP: 002b:00007ffedba542b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fbc98444e63 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000010 R10: 00005555570d4650 R11: 0000000000000246 R12: 0000000000000001 R13: 000000000002efa9 R14: 00007ffedba543dc R15: 0000000000000003 INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.888 msecs