rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (0 ticks this GP) idle=b804/1/0x4000000000000000 softirq=57061/57061 fqs=2
rcu: 	(detected by 0, t=10502 jiffies, g=49137, q=71 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 15437 Comm: syz.3.2520 Not tainted 6.13.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:addr_has_metadata mm/kasan/kasan.h:333 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:177 [inline]
RIP: 0010:kasan_check_range+0x27/0x290 mm/kasan/generic.c:189
Code: 90 90 90 66 0f 1f 00 55 41 57 41 56 41 54 53 b0 01 48 85 f6 0f 84 a0 01 00 00 4c 8d 04 37 49 39 f8 0f 82 56 02 00 00 48 89 fd <48> c1 ed 2f 81 fd fe ff 01 00 0f 86 43 02 00 00 48 89 fb 48 c1 eb
RSP: 0018:ffffc90000a188c0 EFLAGS: 00000002
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff817abb37
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff94271880
RBP: ffffffff94271880 R08: ffffffff94271888 R09: 1ffffffff284e310
R10: dffffc0000000000 R11: fffffbfff284e311 R12: ffff888026e0e4c4
R13: 000000000000001e R14: 1ffff11004dc1cbe R15: ffff888026e0e5f0
FS:  00007fe581b526c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000201d4000 CR3: 0000000050f4e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 hlock_class kernel/locking/lockdep.c:228 [inline]
 check_wait_context kernel/locking/lockdep.c:4851 [inline]
 __lock_acquire+0x5b7/0x2100 kernel/locking/lockdep.c:5176
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
 debug_object_activate+0x17f/0x580 lib/debugobjects.c:818
 debug_hrtimer_activate kernel/time/hrtimer.c:428 [inline]
 debug_activate kernel/time/hrtimer.c:469 [inline]
 enqueue_hrtimer+0x30/0x3c0 kernel/time/hrtimer.c:1076
 __run_hrtimer kernel/time/hrtimer.c:1756 [inline]
 __hrtimer_run_queues+0x6cb/0xd30 kernel/time/hrtimer.c:1803
 hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1865
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049
 </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:5853
Code: 2b 00 74 08 4c 89 f7 e8 6a 99 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:ffffc900054370a0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92000a86e20 RCX: ffff888026e0e4d8
RDX: dffffc0000000000 RSI: ffffffff8c0aaa40 RDI: ffffffff8c5edde0
RBP: ffffc900054371e8 R08: ffffffff94271887 R09: 1ffffffff284e310
R10: dffffc0000000000 R11: fffffbfff284e311 R12: 1ffff92000a86e1c
R13: dffffc0000000000 R14: ffffc90005437100 R15: 0000000000000246
 rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 rcu_read_lock include/linux/rcupdate.h:849 [inline]
 ___pte_offset_map+0x9e/0x380 mm/pgtable-generic.c:287
 __pte_offset_map include/linux/mm.h:3020 [inline]
 __pte_offset_map_lock+0xc7/0x300 mm/pgtable-generic.c:398
 pte_offset_map_lock include/linux/mm.h:3035 [inline]
 do_anonymous_page mm/memory.c:4785 [inline]
 do_pte_missing mm/memory.c:3977 [inline]
 handle_pte_fault+0x2475/0x5ed0 mm/memory.c:5801
 __handle_mm_fault mm/memory.c:5944 [inline]
 handle_mm_fault+0x1053/0x1ad0 mm/memory.c:6112
 do_user_addr_fault arch/x86/mm/fault.c:1389 [inline]
 handle_page_fault arch/x86/mm/fault.c:1481 [inline]
 exc_page_fault+0x2b9/0x8b0 arch/x86/mm/fault.c:1539
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0010:fault_in_readable+0x173/0x2d0 mm/gup.c:2244
Code: 00 fc ff df 4c 89 e8 4f 8d ac 25 ff 0f 00 00 49 81 e5 00 f0 ff ff 49 39 c5 72 7a e8 67 dc b7 ff 4c 39 eb 74 7d 4c 89 64 24 08 <44> 8a 23 43 0f b6 04 3e 84 c0 75 18 44 88 64 24 40 48 81 c3 00 10
RSP: 0018:ffffc90005437a40 EFLAGS: 00050287
RAX: ffffffff81e79579 RBX: 00000000201d4000 RCX: 0000000000080000
RDX: ffffc90004a92000 RSI: 000000000002c7f8 RDI: 000000000002c7f9
RBP: ffffc90005437af8 R08: ffffffff81e7950c R09: ffffffff84b7dbe9
R10: 0000000000000002 R11: ffff888026e0da00 R12: 0000000000001000
R13: 00000000201d5000 R14: 1ffff92000a86f50 R15: dffffc0000000000
 fault_in_iov_iter_readable+0x229/0x280 lib/iov_iter.c:94
 generic_perform_write+0x260/0x990 mm/filemap.c:4036
 shmem_file_write_iter+0xf9/0x120 mm/shmem.c:3296
 new_sync_write fs/read_write.c:586 [inline]
 vfs_write+0xaeb/0xd30 fs/read_write.c:679
 ksys_write+0x18f/0x2b0 fs/read_write.c:731
 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: 0033:0x7fe580d85d29
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:00007fe581b52038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fe580f75fa0 RCX: 00007fe580d85d29
RDX: 000000000208e24b RSI: 0000000020000240 RDI: 0000000000000004
RBP: 00007fe580e01b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fe580f75fa0 R15: 00007ffde2268fd8
 </TASK>
rcu: rcu_preempt kthread starved for 10498 jiffies! g49137 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
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:26264 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0x17fb/0x4be0 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6848
 schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247
 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
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 15445 Comm: syz.0.2523 Not tainted 6.13.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline]
RIP: 0010:smp_call_function_many_cond+0x19f3/0x2c60 kernel/smp.c:884
Code: 45 8b 65 00 44 89 e6 83 e6 01 31 ff e8 c6 e6 0b 00 41 83 e4 01 49 bc 00 00 00 00 00 fc ff df 75 07 e8 71 e2 0b 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 55 e2
RSP: 0018:ffffc900044cf3e0 EFLAGS: 00000246
RAX: ffffffff81938f8b RBX: 1ffff110170e88b9 RCX: 0000000000080000
RDX: ffffc90010135000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc900044cf5e0 R08: ffffffff81938f5a R09: 1ffffffff284e310
R10: dffffc0000000000 R11: fffffbfff284e311 R12: dffffc0000000000
R13: ffff8880b87445c8 R14: ffff8880b863f940 R15: 0000000000000001
FS:  00007fa9a4d406c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30c15ff8 CR3: 000000005d2c6000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1051
 on_each_cpu include/linux/smp.h:71 [inline]
 text_poke_sync arch/x86/kernel/alternative.c:2114 [inline]
 text_poke_bp_batch+0x352/0xb30 arch/x86/kernel/alternative.c:2324
 text_poke_bp+0xb0/0x100 arch/x86/kernel/alternative.c:2551
 __static_call_transform+0x51a/0x810 arch/x86/kernel/static_call.c:111
 arch_static_call_transform+0x141/0x380 arch/x86/kernel/static_call.c:163
 __static_call_update+0xd8/0x5e0 kernel/static_call_inline.c:147
 tracepoint_update_call kernel/tracepoint.c:271 [inline]
 tracepoint_add_func+0x925/0xaa0 kernel/tracepoint.c:312
 tracepoint_probe_register_prio_may_exist+0x122/0x190 kernel/tracepoint.c:435
 bpf_raw_tp_link_attach+0x4a3/0x700 kernel/bpf/syscall.c:3981
 bpf_raw_tracepoint_open+0x177/0x1f0 kernel/bpf/syscall.c:4012
 __sys_bpf+0x3c0/0x810 kernel/bpf/syscall.c:5832
 __do_sys_bpf kernel/bpf/syscall.c:5897 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5895 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5895
 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: 0033:0x7fa9a3f85d29
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:00007fa9a4d40038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fa9a4176160 RCX: 00007fa9a3f85d29
RDX: 0000000000000010 RSI: 0000000020000600 RDI: 0000000000000011
RBP: 00007fa9a4001b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fa9a4176160 R15: 00007fff05ab2378
 </TASK>