SLUB: Unable to allocate memory on CPU 1 (of node 0) on node -1, gfp=0x920(GFP_ATOMIC|__GFP_ZERO)
cache: kmalloc-96, object size: 96, buffer size: 128, default order: 0, min order: 0
node 0: slabs: 516, objs: 16512, free: 0
node 1: slabs: 246, objs: 7872, free: 0
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P12999
rcu: (detected by 1, t=10502 jiffies, g=67289, q=266 ncpus=2)
task:syz.1.1816 state:R running task stack:24904 pid:12999 tgid:12987 ppid:11592 task_flags:0x400140 flags:0x00080000
Call Trace:
sched_show_task kernel/sched/core.c:7819 [inline]
sched_show_task+0x423/0x630 kernel/sched/core.c:7794
rcu_print_detail_task_stall_rnp kernel/rcu/tree_stall.h:292 [inline]
print_other_cpu_stall kernel/rcu/tree_stall.h:681 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:856 [inline]
rcu_pending kernel/rcu/tree.c:3667 [inline]
rcu_sched_clock_irq+0x2634/0x31f0 kernel/rcu/tree.c:2704
update_process_times+0x178/0x2d0 kernel/time/timer.c:2474
tick_sched_handle kernel/time/tick-sched.c:298 [inline]
tick_nohz_handler+0x506/0x720 kernel/time/tick-sched.c:319
__run_hrtimer kernel/time/hrtimer.c:1777 [inline]
__hrtimer_run_queues+0x64e/0xc40 kernel/time/hrtimer.c:1841
hrtimer_interrupt+0x397/0x8e0 kernel/time/hrtimer.c:1903
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1045 [inline]
__sysvec_apic_timer_interrupt+0x10b/0x3c0 arch/x86/kernel/apic/apic.c:1062
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1056
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:kasan_mem_to_shadow include/linux/kasan.h:66 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:140 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:172 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:191 [inline]
RIP: 0010:kasan_check_range+0x62/0x1b0 mm/kasan/generic.c:200
Code: 00 80 ff ff 48 39 c7 0f 82 b3 00 00 00 4c 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 d1 48 c1 ed 03 49 c1 e9 03 <48> 01 c5 49 01 c1 48 89 e8 49 8d 59 01 48 89 da 48 29 ea 48 83 fa
RSP: 0018:ffffc9000c066fd0 EFLAGS: 00000a03
RAX: dffffc0000000000 RBX: ffff88823fff88f8 RCX: ffffffff821acf1b
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88823fff88f8
RBP: 1ffff11047fff11f R08: 0000000000000000 R09: 1ffff11047fff11f
R10: ffff88823fff88ff R11: ffff88802ce6aff0 R12: 0000000000000002
R13: ffff88813fffbac0 R14: dffffc0000000000 R15: ffff88813fffb420
instrument_atomic_read include/linux/instrumented.h:68 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
get_page_from_freelist+0x2fb/0x31a0 mm/page_alloc.c:3885
__alloc_pages_slowpath mm/page_alloc.c:4771 [inline]
__alloc_frozen_pages_noprof+0x6d7/0x2430 mm/page_alloc.c:5253
alloc_pages_mpol+0x1fb/0x550 mm/mempolicy.c:2486
alloc_slab_page mm/slub.c:3075 [inline]
allocate_slab mm/slub.c:3248 [inline]
new_slab+0x2c3/0x430 mm/slub.c:3302
___slab_alloc+0xe18/0x1c90 mm/slub.c:4656
__slab_alloc.constprop.0+0x63/0x110 mm/slub.c:4779
__slab_alloc_node mm/slub.c:4855 [inline]
slab_alloc_node mm/slub.c:5251 [inline]
kmem_cache_alloc_noprof+0x44d/0x770 mm/slub.c:5270
skb_clone+0x190/0x3f0 net/core/skbuff.c:2087
____bpf_clone_redirect net/core/filter.c:2472 [inline]
bpf_clone_redirect+0x166/0x500 net/core/filter.c:2450
bpf_prog_00acfd19bb8886f4+0x5f/0x68
bpf_dispatcher_nop_func include/linux/bpf.h:1378 [inline]
__bpf_prog_run include/linux/filter.h:723 [inline]
bpf_prog_run include/linux/filter.h:730 [inline]
bpf_test_run+0x3d2/0xb50 net/bpf/test_run.c:423
bpf_prog_test_run_skb+0x1035/0x31a0 net/bpf/test_run.c:1158
bpf_prog_test_run kernel/bpf/syscall.c:4703 [inline]
__sys_bpf+0x1035/0x4980 kernel/bpf/syscall.c:6182
__do_sys_bpf kernel/bpf/syscall.c:6274 [inline]
__se_sys_bpf kernel/bpf/syscall.c:6272 [inline]
__x64_sys_bpf+0x78/0xc0 kernel/bpf/syscall.c:6272
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2bc498f749
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:00007f2bc57dd038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f2bc4be6180 RCX: 00007f2bc498f749
RDX: 000000000000004c RSI: 0000200000001300 RDI: 000000000000000a
RBP: 00007f2bc4a13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2bc4be6218 R14: 00007f2bc4be6180 R15: 00007ffcd1fdc668
rcu: rcu_preempt kthread starved for 10443 jiffies! g67289 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:27560 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5256 [inline]
__schedule+0x1139/0x6150 kernel/sched/core.c:6863
__schedule_loop kernel/sched/core.c:6945 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6960
schedule_timeout+0x123/0x290 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x1ea/0xaf0 kernel/rcu/tree.c:2083
rcu_gp_kthread+0x26d/0x380 kernel/rcu/tree.c:2285
kthread+0x3c5/0x780 kernel/kthread.c:463
ret_from_fork+0x983/0xb10 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:82
Code: 46 5f 02 c3 cc cc cc cc 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 13 b9 11 00 fb f4 cc 35 03 00 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
RSP: 0018:ffffffff8e007df8 EFLAGS: 000002c6
RAX: 0000000001e269a5 RBX: 0000000000000000 RCX: ffffffff8b78a6d9
RDX: 0000000000000000 RSI: ffffffff8dacf6aa RDI: ffffffff8bf2b580
RBP: fffffbfff1c12f68 R08: 0000000000000001 R09: ffffed101708673d
R10: ffff8880b84339eb R11: ffffffff8e098670 R12: 0000000000000000
R13: ffffffff8e097b40 R14: ffffffff9088cdd0 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8881248f2000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7d9d1b0f98 CR3: 00000000898b6000 CR4: 00000000003526f0
Call Trace:
arch_safe_halt arch/x86/include/asm/paravirt.h:107 [inline]
default_idle+0x13/0x20 arch/x86/kernel/process.c:767
default_idle_call+0x6c/0xb0 kernel/sched/idle.c:122
cpuidle_idle_call kernel/sched/idle.c:191 [inline]
do_idle+0x38d/0x510 kernel/sched/idle.c:332
cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:430
rest_init+0x16b/0x2b0 init/main.c:757
start_kernel+0x3ef/0x4d0 init/main.c:1206
x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:310
x86_64_start_kernel+0x130/0x190 arch/x86/kernel/head64.c:291
common_startup_64+0x13e/0x148
SLUB: Unable to allocate memory on CPU 1 (of node 0) on node -1, gfp=0x820(GFP_ATOMIC)
cache: skbuff_head_cache, object size: 240, buffer size: 320, default order: 0, min order: 0
node 0: slabs: 75328, objs: 903936, free: 0
node 1: slabs: 271747, objs: 3260964, free: 48
SLUB: Unable to allocate memory on CPU 1 (of node 0) on node -1, gfp=0x920(GFP_ATOMIC|__GFP_ZERO)
cache: kmalloc-96, object size: 96, buffer size: 128, default order: 0, min order: 0
node 0: slabs: 516, objs: 16512, free: 0
node 1: slabs: 246, objs: 7872, free: 0
SLUB: Unable to allocate memory on CPU 1 (of node 0) on node -1, gfp=0x920(GFP_ATOMIC|__GFP_ZERO)
cache: kmalloc-96, object size: 96, buffer size: 128, default order: 0, min order: 0
node 0: slabs: 516, objs: 16512, free: 0
node 1: slabs: 246, objs: 7872, free: 0
SLUB: Unable to allocate memory on CPU 1 (of node 0) on node -1, gfp=0x920(GFP_ATOMIC|__GFP_ZERO)
cache: kmalloc-96, object size: 96, buffer size: 128, default order: 0, min order: 0
node 0: slabs: 516, objs: 16512, free: 0
node 1: slabs: 246, objs: 7872, free: 0
SLUB: Unable to allocate memory on CPU 1 (of node 0) on node -1, gfp=0x920(GFP_ATOMIC|__GFP_ZERO)
cache: kmalloc-96, object size: 96, buffer size: 128, default order: 0, min order: 0
node 0: slabs: 516, objs: 16512, free: 0
node 1: slabs: 246, objs: 7872, free: 0
SLUB: Unable to allocate memory on CPU 1 (of node 0) on node -1, gfp=0x920(GFP_ATOMIC|__GFP_ZERO)
cache: kmalloc-96, object size: 96, buffer size: 128, default order: 0, min order: 0
node 0: slabs: 516, objs: 16512, free: 0
node 1: slabs: 246, objs: 7872, free: 0
SLUB: Unable to allocate memory on CPU 1 (of node 0) on node -1, gfp=0x920(GFP_ATOMIC|__GFP_ZERO)
cache: kmalloc-96, object size: 96, buffer size: 128, default order: 0, min order: 0
node 0: slabs: 516, objs: 16512, free: 0
node 1: slabs: 246, objs: 7872, free: 0
SLUB: Unable to allocate memory on CPU 1 (of node 0) on node -1, gfp=0x920(GFP_ATOMIC|__GFP_ZERO)
cache: kmalloc-96, object size: 96, buffer size: 128, default order: 0, min order: 0
node 0: slabs: 516, objs: 16512, free: 0
node 1: slabs: 246, objs: 7872, free: 0
SLUB: Unable to allocate memory on CPU 1 (of node 0) on node -1, gfp=0x920(GFP_ATOMIC|__GFP_ZERO)
cache: kmalloc-96, object size: 96, buffer size: 128, default order: 0, min order: 0
node 0: slabs: 516, objs: 16512, free: 0
node 1: slabs: 246, objs: 7872, free: 0
SLUB: Unable to allocate memory on CPU 1 (of node 0) on node -1, gfp=0x920(GFP_ATOMIC|__GFP_ZERO)
cache: kmalloc-96, object size: 96, buffer size: 128, default order: 0, min order: 0
node 0: slabs: 516, objs: 16512, free: 0
node 1: slabs: 246, objs: 7872, free: 0
SLUB: Unable to allocate memory on CPU 1 (of node 0) on node -1, gfp=0x920(GFP_ATOMIC|__GFP_ZERO)
cache: kmalloc-96, object size: 96, buffer size: 128, default order: 0, min order: 0
node 0: slabs: 516, objs: 16512, free: 0
node 1: slabs: 246, objs: 7872, free: 0
SLUB: Unable to allocate memory on CPU 1 (of node 0) on node -1, gfp=0x920(GFP_ATOMIC|__GFP_ZERO)
cache: kmalloc-96, object size: 96, buffer size: 128, default order: 0, min order: 0
node 0: slabs: 516, objs: 16512, free: 0
node 1: slabs: 246, objs: 7872, free: 0
SLUB: Unable to allocate memory on CPU 1 (of node 0) on node -1, gfp=0x920(GFP_ATOMIC|__GFP_ZERO)
cache: kmalloc-96, object size: 96, buffer size: 128, default order: 0, min order: 0
node 0: slabs: 516, objs: 16512, free: 0
node 1: slabs: 246, objs: 7872, free: 0
SLUB: Unable to allocate memory on CPU 1 (of node 0) on node -1, gfp=0x920(GFP_ATOMIC|__GFP_ZERO)
cache: kmalloc-96, object size: 96, buffer size: 128, default order: 0, min order: 0
node 0: slabs: 516, objs: 16512, free: 0
node 1: slabs: 246, objs: 7872, free: 0
SLUB: Unable to allocate memory on CPU 1 (of node 0) on node -1, gfp=0x820(GFP_ATOMIC)
cache: skbuff_head_cache, object size: 240, buffer size: 320, default order: 0, min order: 0
node 0: slabs: 75379, objs: 904548, free: 0
node 1: slabs: 271747, objs: 3260964, free: 48