rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 1-...0: (1 GPs behind) idle=da1/1/0x4000000000000000 softirq=25002/25004 fqs=5247 (detected by 0, t=10502 jiffies, g=38409, q=525) Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 8405 Comm: syz-executor.5 Not tainted 5.16.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kasan_check_range+0x222/0x2f0 mm/kasan/generic.c:189 Code: 03 4d 89 cf 49 8d 5e 07 4d 85 f6 49 0f 49 de 48 83 e3 f8 49 29 de 74 11 45 0f b6 1f 45 84 db 75 64 49 ff c7 49 ff ce 75 ef 5b <41> 5c 41 5d 41 5e 41 5f c3 45 84 db 75 50 45 8a 59 01 45 84 db 0f RSP: 0018:ffffc90000dc0cd0 EFLAGS: 00000056 RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff8173cf02 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8dfe9628 RBP: ffffc90000dc0e78 R08: dffffc0000000000 R09: fffffbfff1bfd2c6 R10: fffffbfff1bfd2c6 R11: 0000000000000000 R12: 1ffffffff1bfd2c5 R13: dffffc0000000001 R14: 0000000000000001 R15: ffff8880734b6340 FS: 0000555556e8a400(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc72e58d605 CR3: 00000000199e2000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: instrument_atomic_read include/linux/instrumented.h:71 [inline] test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline] cpumask_test_cpu include/linux/cpumask.h:344 [inline] cpu_online include/linux/cpumask.h:895 [inline] trace_hrtimer_expire_entry+0x52/0x270 include/trace/events/timer.h:232 __run_hrtimer kernel/time/hrtimer.c:1682 [inline] __hrtimer_run_queues+0x497/0xa60 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x3b3/0x1040 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline] __sysvec_apic_timer_interrupt+0xf9/0x270 arch/x86/kernel/apic/apic.c:1103 sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 RIP: 0010:lock_is_held_type+0x143/0x190 Code: 75 40 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 75 46 41 f7 c4 00 02 00 00 74 01 fb 65 48 8b 04 25 28 00 00 00 <48> 3b 44 24 08 75 3c 89 d8 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f RSP: 0018:ffffc900043079f8 EFLAGS: 00000206 RAX: 13d663b2ab90cf00 RBX: 0000000000000000 RCX: 0000000080000001 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000003 R08: dffffc0000000000 R09: fffffbfff1bfd2c6 R10: fffffbfff1bfd2c6 R11: 0000000000000000 R12: 0000000000000246 R13: ffff88806a8ed700 R14: 00000000ffffffff R15: ffffffff8cb1dda0 lock_is_held include/linux/lockdep.h:283 [inline] rcu_read_lock_sched_held+0x89/0x130 kernel/rcu/update.c:125 trace_lock_release+0x4f/0x150 include/trace/events/lock.h:58 lock_release+0x82/0x810 kernel/locking/lockdep.c:5648 rcu_read_unlock include/linux/rcupdate.h:721 [inline] __d_lookup+0x66d/0x720 fs/dcache.c:2444 d_lookup+0x32/0x70 fs/dcache.c:2370 lookup_dcache fs/namei.c:1520 [inline] __lookup_hash+0x2e/0x240 fs/namei.c:1543 filename_create+0x1fe/0x4e0 fs/namei.c:3655 do_symlinkat+0xc3/0x650 fs/namei.c:4267 __do_sys_symlink fs/namei.c:4299 [inline] __se_sys_symlink fs/namei.c:4297 [inline] __x64_sys_symlink+0x7a/0x90 fs/namei.c:4297 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fc72e50d7a7 Code: 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 58 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffed6b70168 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc72e50d7a7 RDX: 00007ffed6b70243 RSI: 00007fc72e5680b3 RDI: 00007ffed6b70230 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffed6b70000 R10: 00007ffed6b6feb7 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffed6b70230 ---------------- Code disassembly (best guess): 0: 03 4d 89 add -0x77(%rbp),%ecx 3: cf iret 4: 49 8d 5e 07 lea 0x7(%r14),%rbx 8: 4d 85 f6 test %r14,%r14 b: 49 0f 49 de cmovns %r14,%rbx f: 48 83 e3 f8 and $0xfffffffffffffff8,%rbx 13: 49 29 de sub %rbx,%r14 16: 74 11 je 0x29 18: 45 0f b6 1f movzbl (%r15),%r11d 1c: 45 84 db test %r11b,%r11b 1f: 75 64 jne 0x85 21: 49 ff c7 inc %r15 24: 49 ff ce dec %r14 27: 75 ef jne 0x18 29: 5b pop %rbx * 2a: 41 5c pop %r12 <-- trapping instruction 2c: 41 5d pop %r13 2e: 41 5e pop %r14 30: 41 5f pop %r15 32: c3 retq 33: 45 84 db test %r11b,%r11b 36: 75 50 jne 0x88 38: 45 8a 59 01 mov 0x1(%r9),%r11b 3c: 45 84 db test %r11b,%r11b 3f: 0f .byte 0xf