rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 ticks this GP) idle=ba44/1/0x4000000000000000 softirq=49186/49186 fqs=0
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P3637/2:b..l P10294/1:b..l
	(detected by 1, t=10502 jiffies, g=78141, q=16 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 12624 Comm: syz-executor.0 Not tainted 6.0.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:84 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:102 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0xc8/0x180 mm/kasan/generic.c:189
Code: 38 00 74 ed 48 8d 50 08 eb 09 48 83 c0 01 48 39 d0 74 7a 80 38 00 74 f2 48 89 c2 b8 01 00 00 00 48 85 d2 75 56 5b 5d 41 5c c3 <48> 85 d2 74 5e 48 01 ea eb 09 48 83 c0 01 48 39 d0 74 50 80 38 00
RSP: 0018:ffffc90000007d80 EFLAGS: 00000083
RAX: ffffed100f0c785d RBX: ffffed100f0c785e RCX: ffffffff815f2200
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff88807863c2e8
RBP: ffffed100f0c785d R08: 0000000000000000 R09: ffff88807863c2eb
R10: ffffed100f0c785d R11: 0000000000000000 R12: ffff888078b7ad80
R13: 17e2b5cf2fc56b9e R14: ffff888078b7ada0 R15: 17e2b5cf2fc56b9e
FS:  0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2e621000 CR3: 000000000bc8e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 instrument_atomic_read include/linux/instrumented.h:71 [inline]
 atomic_read include/linux/atomic/atomic-instrumented.h:27 [inline]
 queued_spin_is_locked include/asm-generic/qspinlock.h:57 [inline]
 debug_spin_unlock kernel/locking/spinlock_debug.c:100 [inline]
 do_raw_spin_unlock+0x50/0x230 kernel/locking/spinlock_debug.c:140
 __raw_spin_unlock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_unlock+0x1a/0x40 kernel/locking/spinlock.c:186
 spin_unlock include/linux/spinlock.h:389 [inline]
 advance_sched+0x435/0x9a0 net/sched/sch_taprio.c:765
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x5fa/0xe40 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
 __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1112
 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1106
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:lock_is_held_type+0xff/0x140 kernel/locking/lockdep.c:5714
Code: 00 00 b8 ff ff ff ff 65 0f c1 05 e4 eb 82 76 83 f8 01 75 29 9c 58 f6 c4 02 75 3d 48 f7 04 24 00 02 00 00 74 01 fb 48 83 c4 08 <44> 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 45 31 ed eb b9 0f 0b 48
RSP: 0018:ffffc90003907868 EFLAGS: 00000282
RAX: 0000000000000046 RBX: 0000000000000001 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffffff8bf86840 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880248d21c0
R13: 0000000000000000 R14: 00000000ffffffff R15: ffff8880248d2c38
 lock_is_held include/linux/lockdep.h:283 [inline]
 __might_resched+0x3a/0x2c0 kernel/sched/core.c:9854
 down_write+0x6c/0x150 kernel/locking/rwsem.c:1551
 lock_anon_vma_root mm/rmap.c:250 [inline]
 unlink_anon_vmas+0x1fc/0x880 mm/rmap.c:407
 free_pgtables+0x1ab/0x2f0 mm/memory.c:430
 exit_mmap+0x1c7/0x490 mm/mmap.c:3117
 __mmput+0x122/0x4b0 kernel/fork.c:1187
 mmput+0x56/0x60 kernel/fork.c:1208
 exit_mm kernel/exit.c:510 [inline]
 do_exit+0x9e2/0x29b0 kernel/exit.c:782
 do_group_exit+0xd2/0x2f0 kernel/exit.c:925
 get_signal+0x238c/0x2610 kernel/signal.c:2857
 arch_do_signal_or_restart+0x82/0x2300 arch/x86/kernel/signal.c:869
 exit_to_user_mode_loop kernel/entry/common.c:166 [inline]
 exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:294
 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd2940893c9
Code: Unable to access opcode bytes at RIP 0x7fd29408939f.
RSP: 002b:00007fd29527e218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fd29419bf88 RCX: 00007fd2940893c9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fd29419bf88
RBP: 00007fd29419bf80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd29419bf8c
R13: 00007ffdd8df999f R14: 00007fd29527e300 R15: 0000000000022000
 </TASK>
task:kworker/u4:1    state:R  running task     stack:25968 pid:10294 ppid:     2 flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5182 [inline]
 __schedule+0xadf/0x52b0 kernel/sched/core.c:6494
 preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:6806
 irqentry_exit+0x31/0x80 kernel/entry/common.c:428
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:lock_acquire+0x1ef/0x570 kernel/locking/lockdep.c:5634
Code: cf a3 7e 83 f8 01 0f 85 e8 02 00 00 9c 58 f6 c4 02 0f 85 fb 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc90002ff7b98 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff920005fef75 RCX: 20245b4df52d1e95
RDX: 1ffff11004d3614e RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff908df947
R10: fffffbfff211bf28 R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000000000 R14: ffffffff8bf86900 R15: 0000000000000000
 rcu_lock_acquire include/linux/rcupdate.h:280 [inline]
 rcu_read_lock include/linux/rcupdate.h:706 [inline]
 batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
 batadv_nc_worker+0x12d/0xfa0 net/batman-adv/network-coding.c:719
 process_one_work+0x991/0x1610 kernel/workqueue.c:2289
 worker_thread+0x665/0x1080 kernel/workqueue.c:2436
 kthread+0x2e4/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
task:syz-executor.5  state:R  running task     stack:24856 pid: 3637 ppid:  3627 flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5182 [inline]
 __schedule+0xadf/0x52b0 kernel/sched/core.c:6494
 preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:6806
 irqentry_exit+0x31/0x80 kernel/entry/common.c:428
 asm_sysvec_reschedule_ipi+0x16/0x20 arch/x86/include/asm/idtentry.h:654
RIP: 0010:lock_acquire+0x1ef/0x570 kernel/locking/lockdep.c:5634
Code: cf a3 7e 83 f8 01 0f 85 e8 02 00 00 9c 58 f6 c4 02 0f 85 fb 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc90003176cc0 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff9200062ed9a RCX: a30921add7dbc78e
RDX: 1ffff11008640556 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff908df947
R10: fffffbfff211bf28 R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000000000 R14: ffffffff8bf86900 R15: 0000000000000000
 rcu_lock_acquire include/linux/rcupdate.h:280 [inline]
 rcu_read_lock include/linux/rcupdate.h:706 [inline]
 xa_load+0xcb/0x290 lib/xarray.c:1461
 list_lru_from_memcg_idx mm/list_lru.c:56 [inline]
 list_lru_from_memcg_idx mm/list_lru.c:53 [inline]
 list_lru_count_one+0x1bb/0x2e0 mm/list_lru.c:185
 list_lru_shrink_count include/linux/list_lru.h:122 [inline]
 count_shadow_nodes+0x80/0xb00 mm/workingset.c:470
 do_shrink_slab+0x7e/0xbd0 mm/vmscan.c:778
 shrink_slab_memcg mm/vmscan.c:900 [inline]
 shrink_slab+0x3e9/0x6f0 mm/vmscan.c:979
 shrink_node_memcgs mm/vmscan.c:3182 [inline]
 shrink_node+0x8c9/0x1e80 mm/vmscan.c:3304
 shrink_zones mm/vmscan.c:3542 [inline]
 do_try_to_free_pages+0x3b4/0x17a0 mm/vmscan.c:3601
 try_to_free_mem_cgroup_pages+0x364/0x960 mm/vmscan.c:3916
 reclaim_high.constprop.0+0x182/0x230 mm/memcontrol.c:2335
 mem_cgroup_handle_over_high+0x18c/0x510 mm/memcontrol.c:2520
 try_charge_memcg+0xe7b/0x13f0 mm/memcontrol.c:2758
 obj_cgroup_charge_pages mm/memcontrol.c:3040 [inline]
 obj_cgroup_charge+0x2ab/0x5e0 mm/memcontrol.c:3330
 memcg_slab_pre_alloc_hook mm/slab.h:496 [inline]
 slab_pre_alloc_hook mm/slab.h:705 [inline]
 slab_alloc mm/slab.c:3278 [inline]
 __kmem_cache_alloc_lru mm/slab.c:3471 [inline]
 kmem_cache_alloc_lru+0x130/0x860 mm/slab.c:3498
 alloc_inode_sb include/linux/fs.h:3103 [inline]
 ext4_alloc_inode+0x24/0x650 fs/ext4/super.c:1327
 alloc_inode+0x61/0x230 fs/inode.c:260
 iget_locked+0x1b7/0x6f0 fs/inode.c:1287
 __ext4_iget+0x3a1/0x4140 fs/ext4/inode.c:4768
 ext4_lookup fs/ext4/namei.c:1831 [inline]
 ext4_lookup+0x383/0x700 fs/ext4/namei.c:1806
 __lookup_slow+0x24c/0x460 fs/namei.c:1685
 lookup_slow fs/namei.c:1702 [inline]
 walk_component+0x33f/0x5a0 fs/namei.c:1993
 lookup_last fs/namei.c:2450 [inline]
 path_lookupat+0x1ba/0x840 fs/namei.c:2474
 filename_lookup+0x1ce/0x590 fs/namei.c:2503
 user_path_at_empty+0x42/0x60 fs/namei.c:2876
 user_path_at include/linux/namei.h:57 [inline]
 ksys_umount fs/namespace.c:1822 [inline]
 __do_sys_umount fs/namespace.c:1830 [inline]
 __se_sys_umount fs/namespace.c:1828 [inline]
 __x64_sys_umount+0xf8/0x180 fs/namespace.c:1828
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f203488a837
RSP: 002b:00007ffd86de7318 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f203488a837
RDX: 00007ffd86de73ec RSI: 000000000000000a RDI: 00007ffd86de73e0
RBP: 00007ffd86de73e0 R08: 00000000ffffffff R09: 00007ffd86de71b0
R10: 0000555555a97873 R11: 0000000000000246 R12: 00007f20348e3466
R13: 00007ffd86de84a0 R14: 0000555555a97810 R15: 00007ffd86de84e0
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g78141 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=151225
rcu: rcu_preempt kthread starved for 10502 jiffies! g78141 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:28928 pid:   16 ppid:     2 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5182 [inline]
 __schedule+0xadf/0x52b0 kernel/sched/core.c:6494
 schedule+0xda/0x1b0 kernel/sched/core.c:6570
 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1935
 rcu_gp_fqs_loop+0x190/0x910 kernel/rcu/tree.c:1657
 rcu_gp_kthread+0x236/0x360 kernel/rcu/tree.c:1854
 kthread+0x2e4/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 12624 Comm: syz-executor.0 Not tainted 6.0.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
RIP: 0010:check_kcov_mode kernel/kcov.c:166 [inline]
RIP: 0010:write_comp_data+0xa/0x90 kernel/kcov.c:229
Code: 10 65 48 8b 04 25 80 6f 02 00 48 8b 80 b0 15 00 00 c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 65 8b 05 a9 3b 87 7e 49 89 f1 <89> c6 49 89 d2 81 e6 00 01 00 00 49 89 f8 65 48 8b 14 25 80 6f 02
RSP: 0018:ffffc90000007e38 EFLAGS: 00000046
RAX: 0000000000010000 RBX: ffff88807863c340 RCX: ffffffff816b4e6f
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000005
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000007
R10: ffffed10173454a8 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8880b9a2a640 R14: ffff8880b9a2a540 R15: ffffffff878c13a0
FS:  0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2e621000 CR3: 000000000bc8e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 cpu_max_bits_warn include/linux/cpumask.h:110 [inline]
 cpumask_check include/linux/cpumask.h:117 [inline]
 cpumask_test_cpu include/linux/cpumask.h:390 [inline]
 cpu_online include/linux/cpumask.h:965 [inline]
 trace_hrtimer_expire_entry include/trace/events/timer.h:235 [inline]
 __run_hrtimer kernel/time/hrtimer.c:1682 [inline]
 __hrtimer_run_queues+0x52f/0xe40 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
 __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1112
 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1106
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:lock_is_held_type+0xff/0x140 kernel/locking/lockdep.c:5714
Code: 00 00 b8 ff ff ff ff 65 0f c1 05 e4 eb 82 76 83 f8 01 75 29 9c 58 f6 c4 02 75 3d 48 f7 04 24 00 02 00 00 74 01 fb 48 83 c4 08 <44> 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 45 31 ed eb b9 0f 0b 48
RSP: 0018:ffffc90003907868 EFLAGS: 00000282
RAX: 0000000000000046 RBX: 0000000000000001 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffffff8bf86840 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880248d21c0
R13: 0000000000000000 R14: 00000000ffffffff R15: ffff8880248d2c38
 lock_is_held include/linux/lockdep.h:283 [inline]
 __might_resched+0x3a/0x2c0 kernel/sched/core.c:9854
 down_write+0x6c/0x150 kernel/locking/rwsem.c:1551
 lock_anon_vma_root mm/rmap.c:250 [inline]
 unlink_anon_vmas+0x1fc/0x880 mm/rmap.c:407
 free_pgtables+0x1ab/0x2f0 mm/memory.c:430
 exit_mmap+0x1c7/0x490 mm/mmap.c:3117
 __mmput+0x122/0x4b0 kernel/fork.c:1187
 mmput+0x56/0x60 kernel/fork.c:1208
 exit_mm kernel/exit.c:510 [inline]
 do_exit+0x9e2/0x29b0 kernel/exit.c:782
 do_group_exit+0xd2/0x2f0 kernel/exit.c:925
 get_signal+0x238c/0x2610 kernel/signal.c:2857
 arch_do_signal_or_restart+0x82/0x2300 arch/x86/kernel/signal.c:869
 exit_to_user_mode_loop kernel/entry/common.c:166 [inline]
 exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:294
 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd2940893c9
Code: Unable to access opcode bytes at RIP 0x7fd29408939f.
RSP: 002b:00007fd29527e218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fd29419bf88 RCX: 00007fd2940893c9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fd29419bf88
RBP: 00007fd29419bf80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd29419bf8c
R13: 00007ffdd8df999f R14: 00007fd29527e300 R15: 0000000000022000
 </TASK>