rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-...!: (10498 ticks this GP) idle=cf1/1/0x4000000000000000 softirq=33091/33091 fqs=0 
	(t=10501 jiffies g=46989 q=75)
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g46989 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=27739
rcu: rcu_preempt kthread starved for 10504 jiffies! g46989 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:28944 pid:   14 ppid:     2 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4972 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6253
 schedule+0xd2/0x260 kernel/sched/core.c:6326
 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881
 rcu_gp_fqs_loop+0x186/0x810 kernel/rcu/tree.c:1955
 rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2128
 kthread+0x405/0x4f0 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
NMI backtrace for cpu 0
CPU: 0 PID: 11135 Comm: syz-executor.0 Not tainted 5.16.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
 rcu_check_gp_kthread_starvation.cold+0x1fb/0x200 kernel/rcu/tree_stall.h:481
 print_cpu_stall kernel/rcu/tree_stall.h:625 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:711 [inline]
 rcu_pending kernel/rcu/tree.c:3878 [inline]
 rcu_sched_clock_irq.cold+0x98/0x746 kernel/rcu/tree.c:2597
 update_process_times+0x16d/0x200 kernel/time/timer.c:1785
 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:226
 tick_sched_timer+0x1b0/0x2d0 kernel/time/tick-sched.c:1428
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x1c0/0xe50 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
 __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:rcu_dynticks_curr_cpu_in_eqs kernel/rcu/tree.c:330 [inline]
RIP: 0010:rcu_is_watching+0x39/0xb0 kernel/rcu/tree.c:1121
Code: c7 c3 d0 aa 03 00 83 f8 07 89 c5 77 77 48 8d 3c ed a0 b8 55 8b 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 <75> 51 48 03 1c ed a0 b8 55 8b 48 b8 00 00 00 00 00 fc ff df 48 89
RSP: 0018:ffffc90002bf7008 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: 000000000003aad0 RCX: ffffffff815bec28
RDX: 1ffffffff16ab714 RSI: 0000000000000002 RDI: ffffffff8b55b8a0
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8d911897
R10: fffffbfff1b22312 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000000 R14: ffffffff8bb812a0 R15: 0000000000000000
 rcu_read_lock_held_common kernel/rcu/update.c:108 [inline]
 rcu_read_lock_sched_held+0x1c/0x70 kernel/rcu/update.c:123
 trace_lock_acquire include/trace/events/lock.h:13 [inline]
 lock_acquire+0x442/0x510 kernel/locking/lockdep.c:5608
 rcu_lock_acquire include/linux/rcupdate.h:268 [inline]
 rcu_read_lock include/linux/rcupdate.h:688 [inline]
 percpu_ref_tryget_many include/linux/percpu-refcount.h:241 [inline]
 percpu_ref_tryget include/linux/percpu-refcount.h:266 [inline]
 css_tryget include/linux/cgroup.h:354 [inline]
 css_tryget include/linux/cgroup.h:351 [inline]
 get_mem_cgroup_from_mm+0x261/0x6c0 mm/memcontrol.c:934
 __mem_cgroup_charge+0x16/0x90 mm/memcontrol.c:6686
 mem_cgroup_charge include/linux/memcontrol.h:713 [inline]
 __filemap_add_folio+0x724/0xe20 mm/filemap.c:906
 filemap_add_folio+0xab/0x1d0 mm/filemap.c:999
 __filemap_get_folio+0x3bc/0xe10 mm/filemap.c:1962
 pagecache_get_page+0x2c/0x1a0 mm/folio-compat.c:125
 ext4_da_write_begin+0x3bc/0xad0 fs/ext4/inode.c:2958
 generic_perform_write+0x205/0x510 mm/filemap.c:3754
 ext4_buffered_write_iter+0x1ac/0x3b0 fs/ext4/file.c:269
 ext4_file_write_iter+0x423/0x14e0 fs/ext4/file.c:681
 call_write_iter include/linux/fs.h:2162 [inline]
 do_iter_readv_writev+0x472/0x750 fs/read_write.c:725
 do_iter_write+0x188/0x710 fs/read_write.c:851
 vfs_iter_write+0x70/0xa0 fs/read_write.c:892
 iter_file_splice_write+0x6fa/0xc10 fs/splice.c:689
 do_splice_from fs/splice.c:767 [inline]
 direct_splice_actor+0x110/0x180 fs/splice.c:936
 splice_direct_to_actor+0x34b/0x8c0 fs/splice.c:891
 do_splice_direct+0x1b3/0x280 fs/splice.c:979
 do_sendfile+0xaf2/0x1250 fs/read_write.c:1245
 __do_sys_sendfile64 fs/read_write.c:1310 [inline]
 __se_sys_sendfile64 fs/read_write.c:1296 [inline]
 __x64_sys_sendfile64+0x1cc/0x210 fs/read_write.c:1296
 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+0x44/0xae
RIP: 0033:0x7fab45cbce99
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fab44632168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fab45dcff60 RCX: 00007fab45cbce99
RDX: 0000000000000000 RSI: 000000000000000f RDI: 0000000000000006
RBP: 00007fab45d16ff1 R08: 0000000000000000 R09: 0000000000000000
R10: 00008400fffffffb R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffeaa92c76f R14: 00007fab44632300 R15: 0000000000022000
 </TASK>
NMI backtrace for cpu 0
CPU: 0 PID: 11135 Comm: syz-executor.0 Not tainted 5.16.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
 rcu_dump_cpu_stacks+0x25e/0x3f0 kernel/rcu/tree_stall.h:343
 print_cpu_stall kernel/rcu/tree_stall.h:627 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:711 [inline]
 rcu_pending kernel/rcu/tree.c:3878 [inline]
 rcu_sched_clock_irq.cold+0x9d/0x746 kernel/rcu/tree.c:2597
 update_process_times+0x16d/0x200 kernel/time/timer.c:1785
 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:226
 tick_sched_timer+0x1b0/0x2d0 kernel/time/tick-sched.c:1428
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x1c0/0xe50 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
 __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:rcu_dynticks_curr_cpu_in_eqs kernel/rcu/tree.c:330 [inline]
RIP: 0010:rcu_is_watching+0x39/0xb0 kernel/rcu/tree.c:1121
Code: c7 c3 d0 aa 03 00 83 f8 07 89 c5 77 77 48 8d 3c ed a0 b8 55 8b 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 <75> 51 48 03 1c ed a0 b8 55 8b 48 b8 00 00 00 00 00 fc ff df 48 89
RSP: 0018:ffffc90002bf7008 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: 000000000003aad0 RCX: ffffffff815bec28
RDX: 1ffffffff16ab714 RSI: 0000000000000002 RDI: ffffffff8b55b8a0
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8d911897
R10: fffffbfff1b22312 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000000 R14: ffffffff8bb812a0 R15: 0000000000000000
 rcu_read_lock_held_common kernel/rcu/update.c:108 [inline]
 rcu_read_lock_sched_held+0x1c/0x70 kernel/rcu/update.c:123
 trace_lock_acquire include/trace/events/lock.h:13 [inline]
 lock_acquire+0x442/0x510 kernel/locking/lockdep.c:5608
 rcu_lock_acquire include/linux/rcupdate.h:268 [inline]
 rcu_read_lock include/linux/rcupdate.h:688 [inline]
 percpu_ref_tryget_many include/linux/percpu-refcount.h:241 [inline]
 percpu_ref_tryget include/linux/percpu-refcount.h:266 [inline]
 css_tryget include/linux/cgroup.h:354 [inline]
 css_tryget include/linux/cgroup.h:351 [inline]
 get_mem_cgroup_from_mm+0x261/0x6c0 mm/memcontrol.c:934
 __mem_cgroup_charge+0x16/0x90 mm/memcontrol.c:6686
 mem_cgroup_charge include/linux/memcontrol.h:713 [inline]
 __filemap_add_folio+0x724/0xe20 mm/filemap.c:906
 filemap_add_folio+0xab/0x1d0 mm/filemap.c:999
 __filemap_get_folio+0x3bc/0xe10 mm/filemap.c:1962
 pagecache_get_page+0x2c/0x1a0 mm/folio-compat.c:125
 ext4_da_write_begin+0x3bc/0xad0 fs/ext4/inode.c:2958
 generic_perform_write+0x205/0x510 mm/filemap.c:3754
 ext4_buffered_write_iter+0x1ac/0x3b0 fs/ext4/file.c:269
 ext4_file_write_iter+0x423/0x14e0 fs/ext4/file.c:681
 call_write_iter include/linux/fs.h:2162 [inline]
 do_iter_readv_writev+0x472/0x750 fs/read_write.c:725
 do_iter_write+0x188/0x710 fs/read_write.c:851
 vfs_iter_write+0x70/0xa0 fs/read_write.c:892
 iter_file_splice_write+0x6fa/0xc10 fs/splice.c:689
 do_splice_from fs/splice.c:767 [inline]
 direct_splice_actor+0x110/0x180 fs/splice.c:936
 splice_direct_to_actor+0x34b/0x8c0 fs/splice.c:891
 do_splice_direct+0x1b3/0x280 fs/splice.c:979
 do_sendfile+0xaf2/0x1250 fs/read_write.c:1245
 __do_sys_sendfile64 fs/read_write.c:1310 [inline]
 __se_sys_sendfile64 fs/read_write.c:1296 [inline]
 __x64_sys_sendfile64+0x1cc/0x210 fs/read_write.c:1296
 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+0x44/0xae
RIP: 0033:0x7fab45cbce99
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fab44632168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fab45dcff60 RCX: 00007fab45cbce99
RDX: 0000000000000000 RSI: 000000000000000f RDI: 0000000000000006
RBP: 00007fab45d16ff1 R08: 0000000000000000 R09: 0000000000000000
R10: 00008400fffffffb R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffeaa92c76f R14: 00007fab44632300 R15: 0000000000022000
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 11132 Comm: syz-executor.5 Not tainted 5.16.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:kvm_set_cpu_l1tf_flush_l1d+0x0/0x20 arch/x86/include/asm/hardirq.h:67
Code: 86 6f 8b 00 e9 b2 fe ff ff 48 89 de 48 c7 c7 40 5f 9e 8b e8 62 67 cc 02 e9 fa fd ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 <48> c7 c7 e0 8f a8 89 e8 74 a5 13 08 65 c6 05 3e e5 d1 7e 01 c3 66
RSP: 0018:ffffc90002c06e18 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffc90005502000
RDX: 0000000000040000 RSI: ffffffff89454c18 RDI: 0000000000000003
RBP: ffffc90002c06e38 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff817d202c R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f84dbbfd700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2ee3a000 CR3: 0000000022ab4000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 sysvec_apic_timer_interrupt+0x13/0xc0 arch/x86/kernel/apic/apic.c:1097
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__read_once_word_nocheck+0x3/0x10 include/asm-generic/rwonce.h:68
Code: e9 97 fb ff ff 4c 89 f6 48 c7 c7 00 9b 9f 8b e8 c3 2f ca 02 e9 60 fb ff ff e8 49 37 89 00 e9 cf fb ff ff cc cc cc cc 48 8b 07 <c3> 66 66 2e 0f 1f 84 00 00 00 00 00 90 41 57 89 d0 41 56 41 55 41
RSP: 0018:ffffc90002c06ee0 EFLAGS: 00000297
RAX: 1ffff92000580fd5 RBX: ffffc90002c07030 RCX: ffffc90002c07030
RDX: dffffc0000000000 RSI: ffffc90002c07e70 RDI: ffffc90002c07e70
RBP: ffffc90002c07e70 R08: ffffffff8e18bc76 R09: 0000000000000001
R10: fffff52000580e09 R11: 000000000008808a R12: ffffc90002c06ff0
R13: ffffc90002c00000 R14: ffffc90002c06ff0 R15: ffffc90002c07024
 deref_stack_reg+0xee/0x150 arch/x86/kernel/unwind_orc.c:355
 unwind_next_frame+0x13f9/0x1ce0 arch/x86/kernel/unwind_orc.c:600
 arch_stack_walk+0x7d/0xe0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:122
 kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 __kasan_slab_alloc+0x85/0xb0 mm/kasan/common.c:467
 kasan_slab_alloc include/linux/kasan.h:259 [inline]
 slab_post_alloc_hook mm/slab.h:519 [inline]
 slab_alloc mm/slab.c:3323 [inline]
 kmem_cache_alloc+0x265/0x560 mm/slab.c:3507
 kmem_cache_zalloc include/linux/slab.h:714 [inline]
 jbd2_alloc_handle include/linux/jbd2.h:1603 [inline]
 new_handle fs/jbd2/transaction.c:481 [inline]
 jbd2__journal_start+0x191/0x930 fs/jbd2/transaction.c:508
 __ext4_journal_start_sb+0x227/0x4a0 fs/ext4/ext4_jbd2.c:105
 __ext4_journal_start fs/ext4/ext4_jbd2.h:326 [inline]
 ext4_dirty_inode+0x9d/0x110 fs/ext4/inode.c:5916
 __mark_inode_dirty+0x45b/0xfe0 fs/fs-writeback.c:2399
 mark_inode_dirty include/linux/fs.h:2451 [inline]
 generic_write_end+0x31b/0x500 fs/buffer.c:2202
 ext4_da_write_end+0x1c2/0x990 fs/ext4/inode.c:3059
 generic_perform_write+0x2c6/0x510 mm/filemap.c:3765
 ext4_buffered_write_iter+0x1ac/0x3b0 fs/ext4/file.c:269
 ext4_file_write_iter+0x423/0x14e0 fs/ext4/file.c:681
 call_write_iter include/linux/fs.h:2162 [inline]
 do_iter_readv_writev+0x472/0x750 fs/read_write.c:725
 do_iter_write+0x188/0x710 fs/read_write.c:851
 vfs_iter_write+0x70/0xa0 fs/read_write.c:892
 iter_file_splice_write+0x6fa/0xc10 fs/splice.c:689
 do_splice_from fs/splice.c:767 [inline]
 direct_splice_actor+0x110/0x180 fs/splice.c:936
 splice_direct_to_actor+0x34b/0x8c0 fs/splice.c:891
 do_splice_direct+0x1b3/0x280 fs/splice.c:979
 do_sendfile+0xaf2/0x1250 fs/read_write.c:1245
 __do_sys_sendfile64 fs/read_write.c:1310 [inline]
 __se_sys_sendfile64 fs/read_write.c:1296 [inline]
 __x64_sys_sendfile64+0x1cc/0x210 fs/read_write.c:1296
 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+0x44/0xae
RIP: 0033:0x7f84dd287e99
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f84dbbfd168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f84dd39af60 RCX: 00007f84dd287e99
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000006
RBP: 00007f84dd2e1ff1 R08: 0000000000000000 R09: 0000000000000000
R10: 00008400fffffffb R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd9df5822f R14: 00007f84dbbfd300 R15: 0000000000022000
 </TASK>
sched: RT throttling activated
----------------
Code disassembly (best guess):
   0:	c7 c3 d0 aa 03 00    	mov    $0x3aad0,%ebx
   6:	83 f8 07             	cmp    $0x7,%eax
   9:	89 c5                	mov    %eax,%ebp
   b:	77 77                	ja     0x84
   d:	48 8d 3c ed a0 b8 55 	lea    -0x74aa4760(,%rbp,8),%rdi
  14:	8b
  15:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  1c:	fc ff df
  1f:	48 89 fa             	mov    %rdi,%rdx
  22:	48 c1 ea 03          	shr    $0x3,%rdx
  26:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
* 2a:	75 51                	jne    0x7d <-- trapping instruction
  2c:	48 03 1c ed a0 b8 55 	add    -0x74aa4760(,%rbp,8),%rbx
  33:	8b
  34:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  3b:	fc ff df
  3e:	48                   	rex.W
  3f:	89                   	.byte 0x89