rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P6057/1:b..l P5985/1:b..l
rcu: (detected by 1, t=10502 jiffies, g=13273, q=731 ncpus=2)
task:syz.3.227 state:R running task stack:23536 pid:5985 tgid:5963 ppid:5094 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6745
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7067
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5758
Code: 2b 00 74 08 4c 89 f7 e8 0a 81 89 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:ffffc90009397120 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92001272e30 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffffffff8bcaccc0 RDI: ffffffff8c1ff100
RBP: ffffc90009397268 R08: ffffffff92fa8587 R09: 1ffffffff25f50b0
R10: dffffc0000000000 R11: fffffbfff25f50b1 R12: 1ffff92001272e2c
R13: dffffc0000000000 R14: ffffc90009397180 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
rcu_read_lock include/linux/rcupdate.h:781 [inline]
af_alg_wmem_wakeup+0xd4/0x440 crypto/af_alg.c:845
aead_recvmsg+0x194e/0x19f0 crypto/algif_aead.c:353
sock_recvmsg_nosec+0x190/0x1d0 net/socket.c:1046
____sys_recvmsg+0x3c0/0x470 net/socket.c:2802
___sys_recvmsg net/socket.c:2846 [inline]
do_recvmmsg+0x474/0xae0 net/socket.c:2940
__sys_recvmmsg net/socket.c:3019 [inline]
__do_sys_recvmmsg net/socket.c:3042 [inline]
__se_sys_recvmmsg net/socket.c:3035 [inline]
__x64_sys_recvmmsg+0x199/0x250 net/socket.c:3035
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: 0033:0x7fe072b75bd9
RSP: 002b:00007fe0738b7048 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007fe072d04110 RCX: 00007fe072b75bd9
RDX: 03ffffffffffff67 RSI: 0000000020002440 RDI: 0000000000000004
RBP: 00007fe072be4e60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fe072d04110 R15: 00007ffc153519f8
task:syz.1.270 state:R running task stack:26256 pid:6057 tgid:6056 ppid:5097 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6745
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7067
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5758
Code: 2b 00 74 08 4c 89 f7 e8 0a 81 89 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:ffffc900095a7740 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff920012b4ef4 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffffffff8bcaccc0 RDI: ffffffff8c1ff100
RBP: ffffc900095a7888 R08: ffffffff92fa8587 R09: 1ffffffff25f50b0
R10: dffffc0000000000 R11: fffffbfff25f50b1 R12: 1ffff920012b4ef0
R13: dffffc0000000000 R14: ffffc900095a77a0 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
rcu_read_lock include/linux/rcupdate.h:781 [inline]
is_bpf_text_address+0x46/0x2a0 kernel/bpf/core.c:767
kernel_text_address+0xa7/0xe0 kernel/extable.c:125
__kernel_text_address+0xd/0x40 kernel/extable.c:79
unwind_get_return_address+0x5d/0xc0 arch/x86/kernel/unwind_orc.c:369
arch_stack_walk+0x125/0x1b0 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3940 [inline]
slab_alloc_node mm/slub.c:4002 [inline]
kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4009
getname_flags+0xbd/0x4f0 fs/namei.c:139
user_path_at_empty+0x2c/0x60 fs/namei.c:2928
user_path_at include/linux/namei.h:58 [inline]
path_setxattr+0xb2/0x2a0 fs/xattr.c:666
__do_sys_lsetxattr fs/xattr.c:694 [inline]
__se_sys_lsetxattr fs/xattr.c:690 [inline]
__x64_sys_lsetxattr+0xb8/0xd0 fs/xattr.c:690
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: 0033:0x7efcd2575bd9
RSP: 002b:00007efcd3302048 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd
RAX: ffffffffffffffda RBX: 00007efcd2703f60 RCX: 00007efcd2575bd9
RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000020000000
RBP: 00007efcd25e4e60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007efcd2703f60 R15: 00007ffe5b431c68
rcu: rcu_preempt kthread starved for 10330 jiffies! g13273 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:24912 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6837
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2000
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2202
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:86 [inline]
NMI backtrace for cpu 0 skipped: idling at acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:111
sched: RT throttling activated