rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P28051/1:b..l
rcu: (detected by 1, t=10503 jiffies, g=94001, q=663 ncpus=2)
task:syz.4.10161 state:R running task stack:25952 pid:28051 tgid:28051 ppid:5924 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x17fb/0x4be0 kernel/sched/core.c:6756
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7078
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:kasan_check_range+0x5/0x290 mm/kasan/generic.c:188
Code: 41 8d 06 8e e8 9c b1 e3 ff 90 0f 0b 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 55 <41> 57 41 56 41 54 53 b0 01 48 85 f6 0f 84 a0 01 00 00 4c 8d 04 37
RSP: 0018:ffffc9000e6ef290 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff817aafe4
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff90185930
RBP: ffffc9000e6ef3e8 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff94000232e87 R12: 1ffff92001cdde5c
R13: dffffc0000000000 R14: 0000000000000000 R15: dffffc0000000000
instrument_atomic_read include/linux/instrumented.h:68 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
cpumask_test_cpu include/linux/cpumask.h:570 [inline]
cpu_online include/linux/cpumask.h:1117 [inline]
trace_lock_acquire include/trace/events/lock.h:24 [inline]
lock_acquire+0xd4/0x550 kernel/locking/lockdep.c:5820
rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
rcu_read_lock include/linux/rcupdate.h:849 [inline]
page_ext_get+0x3d/0x2a0 mm/page_ext.c:525
__reset_page_owner+0x30/0x430 mm/page_owner.c:290
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_unref_page+0xd2c/0x1000 mm/page_alloc.c:2659
__slab_free+0x2c2/0x380 mm/slub.c:4524
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4119 [inline]
kmem_cache_alloc_bulk_noprof+0x4fa/0x7c0 mm/slub.c:5129
mt_alloc_bulk lib/maple_tree.c:181 [inline]
mas_alloc_nodes+0x38e/0x7e0 lib/maple_tree.c:1275
mas_node_count_gfp lib/maple_tree.c:1335 [inline]
mas_preallocate+0x575/0x8d0 lib/maple_tree.c:5546
vma_iter_prealloc mm/vma.h:349 [inline]
__split_vma+0x302/0xc50 mm/vma.c:447
split_vma mm/vma.c:510 [inline]
vma_modify+0x144/0x330 mm/vma.c:1520
vma_modify_flags+0x3a5/0x430 mm/vma.c:1546
mprotect_fixup+0x45a/0xaa0 mm/mprotect.c:666
do_mprotect_pkey+0x8d7/0xd70 mm/mprotect.c:840
__do_sys_mprotect mm/mprotect.c:861 [inline]
__se_sys_mprotect mm/mprotect.c:858 [inline]
__x64_sys_mprotect+0x80/0x90 mm/mprotect.c:858
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: 0033:0x7f1336385de7
RSP: 002b:00007ffcf3b1f3f8 EFLAGS: 00000206 ORIG_RAX: 000000000000000a
RAX: ffffffffffffffda RBX: 00007f13371596c0 RCX: 00007f1336385de7
RDX: 0000000000000003 RSI: 0000000000020000 RDI: 00007f133713a000
RBP: 0000000000000000 R08: 00000000ffffffff R09: 0000000000000000
R10: 0000000000021000 R11: 0000000000000206 R12: 00007ffcf3b1f550
R13: ffffffffffffffc0 R14: 0000000000001000 R15: 0000000000000000
rcu: rcu_preempt kthread starved for 3893 jiffies! g94001 f0x0 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:25976 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x17fb/0x4be0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/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:
CPU: 1 UID: 0 PID: 24 Comm: ksoftirqd/1 Not tainted 6.13.0-rc7-syzkaller-00019-gc45323b7560e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:get_current arch/x86/include/asm/current.h:49 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x70 kernel/kcov.c:216
Code: 8b 3d 44 b1 8d 0c 48 89 de 5b e9 63 70 58 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0c 25 80 d4 03 00 65 8b 15 50 62 64 7e 81 e2 00 01 ff 00
RSP: 0018:ffffc900001e7168 EFLAGS: 00000202
RAX: ffffffff8a956cde RBX: 0000000000000001 RCX: 0000000080000100
RDX: ffff88801d2d8000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffff888059e33800 R08: ffffffff8a956cd1 R09: 1ffffffff2030b26
R10: dffffc0000000000 R11: fffffbfff2030b27 R12: dffffc0000000000
R13: ffff8880619c6000 R14: ffff88815519fb20 R15: ffff8881551a03c0
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000557f85396d88 CR3: 000000005e822000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
br_port_get_rcu net/bridge/br_private.h:453 [inline]
bridge_parent_rtable include/net/netfilter/br_netfilter.h:48 [inline]
br_nf_pre_routing_finish_ipv6+0x48e/0xdd0 net/bridge/br_netfilter_ipv6.c:142
NF_HOOK include/linux/netfilter.h:314 [inline]
br_nf_pre_routing_ipv6+0x379/0x770 net/bridge/br_netfilter_ipv6.c:184
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:277 [inline]
br_handle_frame+0x9fd/0x1530 net/bridge/br_input.c:424
__netif_receive_skb_core+0x14eb/0x4690 net/core/dev.c:5598
__netif_receive_skb_one_core net/core/dev.c:5702 [inline]
__netif_receive_skb+0x12f/0x650 net/core/dev.c:5817
process_backlog+0x662/0x15b0 net/core/dev.c:6149
__napi_poll+0xcb/0x490 net/core/dev.c:6902
napi_poll net/core/dev.c:6971 [inline]
net_rx_action+0x89b/0x1240 net/core/dev.c:7093
handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561
run_ksoftirqd+0xca/0x130 kernel/softirq.c:950
smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244