rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
(detected by 0, t=10502 jiffies, g=196173, q=7)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4295200287-4295189785), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g196173 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
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:28648 pid: 14 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4900 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
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 13356 Comm: syz-executor.4 Not tainted 5.16.0-rc8-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:trace_lock_acquire include/trace/events/lock.h:13 [inline]
RIP: 0010:lock_acquire+0x3bb/0x510 kernel/locking/lockdep.c:5608
Code: 08 00 00 00 48 89 d0 48 89 54 24 08 48 c1 f8 06 48 8d 3c c5 90 5e 91 8d e8 32 a5 61 00 48 8b 54 24 08 48 0f a3 15 f5 a8 34 0c <0f> 83 0a fd ff ff 65 ff 05 58 ba a5 7e 48 8b 05 91 77 20 0c 48 85
RSP: 0018:ffffc90000dc0ce0 EFLAGS: 00000047
RAX: 0000000000000001 RBX: 1ffff920001b819e RCX: ffffffff815cb58e
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffffff8d915e90
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8d915e97
R10: fffffbfff1b22bd2 R11: 0000000000000001 R12: 0000000000000002
R13: 0000000000000000 R14: ffffffff8bb83da0 R15: 0000000000000000
FS: 00007f773fb33700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7741244d09 CR3: 000000001df45000 CR4: 0000000000350ee0
Call Trace:
rcu_lock_acquire include/linux/rcupdate.h:268 [inline]
rcu_read_lock include/linux/rcupdate.h:688 [inline]
advance_sched+0x4a5/0x9a0 net/sched/sch_taprio.c:767
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x609/0xe50 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
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__lt_from_rb include/linux/rbtree_latch.h:72 [inline]
RIP: 0010:__lt_find include/linux/rbtree_latch.h:114 [inline]
RIP: 0010:latch_tree_find include/linux/rbtree_latch.h:208 [inline]
RIP: 0010:bpf_ksym_find+0xd2/0x1c0 kernel/bpf/core.c:682
Code: 00 00 00 49 8d 44 24 06 48 8b 1c c5 80 f3 80 8b 48 85 db 74 74 e8 7e 76 f3 ff 4f 8d 34 64 49 c1 e6 03 49 f7 de e8 6e 76 f3 ff <4e> 8d 24 33 49 8d bc 24 60 ff ff ff 48 89 f8 48 c1 e8 03 42 80 3c
RSP: 0018:ffffc900048ef120 EFLAGS: 00000216
RAX: 0000000000001397 RBX: ffffffff8d3133f0 RCX: ffffc9000fc69000
RDX: 0000000000040000 RSI: ffffffff818421d2 RDI: ffff8880192c2200
RBP: 00007f77411bde99 R08: 00007f77411bde99 R09: 0000000000000001
R10: ffffffff81842203 R11: 0000000000000000 R12: ffff8880192c21f0
R13: dffffc0000000000 R14: 0000000000000000 R15: ffffffffa008ef34
is_bpf_text_address+0x58/0x170 kernel/bpf/core.c:716
kernel_text_address kernel/extable.c:124 [inline]
kernel_text_address+0x39/0x80 kernel/extable.c:93
__kernel_text_address+0x9/0x30 kernel/extable.c:78
unwind_get_return_address arch/x86/kernel/unwind_orc.c:318 [inline]
unwind_get_return_address+0x51/0x90 arch/x86/kernel/unwind_orc.c:313
arch_stack_walk+0x93/0xe0 arch/x86/kernel/stacktrace.c:26
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+0x90/0xc0 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_node mm/slub.c:3234 [inline]
slab_alloc mm/slub.c:3242 [inline]
kmem_cache_alloc+0x202/0x3a0 mm/slub.c:3247
kmem_cache_zalloc include/linux/slab.h:714 [inline]
lsm_inode_alloc security/security.c:593 [inline]
security_inode_alloc+0x34/0x160 security/security.c:1018
inode_init_always+0x5d8/0xd70 fs/inode.c:170
alloc_inode+0x82/0x230 fs/inode.c:242
new_inode_pseudo fs/inode.c:944 [inline]
new_inode+0x27/0x2f0 fs/inode.c:973
__ext4_new_inode+0x359/0x5550 fs/ext4/ialloc.c:960
ext4_create+0x2d6/0x4d0 fs/ext4/namei.c:2746
lookup_open.isra.0+0xfe4/0x13d0 fs/namei.c:3280
open_last_lookups fs/namei.c:3350 [inline]
path_openat+0x9b8/0x2750 fs/namei.c:3556
do_filp_open+0x1aa/0x400 fs/namei.c:3586
do_sys_openat2+0x16d/0x4d0 fs/open.c:1212
do_sys_open fs/open.c:1228 [inline]
__do_sys_open fs/open.c:1236 [inline]
__se_sys_open fs/open.c:1232 [inline]
__x64_sys_open+0x119/0x1c0 fs/open.c:1232
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: 0033:0x7f77411bde99
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:00007f773fb33168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f77412d0f60 RCX: 00007f77411bde99
RDX: 0000000000000000 RSI: 00000000001612c2 RDI: 0000000020000140
RBP: 00007f7741217ff1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc14cbacff R14: 00007f773fb33300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: 08 00 or %al,(%rax)
2: 00 00 add %al,(%rax)
4: 48 89 d0 mov %rdx,%rax
7: 48 89 54 24 08 mov %rdx,0x8(%rsp)
c: 48 c1 f8 06 sar $0x6,%rax
10: 48 8d 3c c5 90 5e 91 lea -0x726ea170(,%rax,8),%rdi
17: 8d
18: e8 32 a5 61 00 callq 0x61a54f
1d: 48 8b 54 24 08 mov 0x8(%rsp),%rdx
22: 48 0f a3 15 f5 a8 34 bt %rdx,0xc34a8f5(%rip) # 0xc34a91f
29: 0c
* 2a: 0f 83 0a fd ff ff jae 0xfffffd3a <-- trapping instruction
30: 65 ff 05 58 ba a5 7e incl %gs:0x7ea5ba58(%rip) # 0x7ea5ba8f
37: 48 8b 05 91 77 20 0c mov 0xc207791(%rip),%rax # 0xc2077cf
3e: 48 rex.W
3f: 85 .byte 0x85