rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P20461/1:b..l
rcu: (detected by 1, t=10502 jiffies, g=125185, q=390 ncpus=2)
task:syz-executor.3 state:R running task stack:25344 pid:20461 ppid:5405 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0xee1/0x5a10 kernel/sched/core.c:6695
preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6864
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
unwind_next_frame+0x1c80/0x2390 arch/x86/kernel/unwind_orc.c:672
arch_stack_walk+0xfa/0x170 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x96/0xd0 kernel/stacktrace.c:122
save_stack+0x160/0x1f0 mm/page_owner.c:128
__reset_page_owner+0x5a/0x190 mm/page_owner.c:149
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1136 [inline]
free_unref_page_prepare+0x476/0xa40 mm/page_alloc.c:2312
free_unref_page+0x33/0x3b0 mm/page_alloc.c:2405
qlink_free mm/kasan/quarantine.c:166 [inline]
qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:185
kasan_quarantine_reduce+0x18e/0x1d0 mm/kasan/quarantine.c:292
__kasan_slab_alloc+0x65/0x90 mm/kasan/common.c:305
kasan_slab_alloc include/linux/kasan.h:188 [inline]
slab_post_alloc_hook mm/slab.h:762 [inline]
slab_alloc_node mm/slub.c:3478 [inline]
slab_alloc mm/slub.c:3486 [inline]
__kmem_cache_alloc_lru mm/slub.c:3493 [inline]
kmem_cache_alloc+0x16c/0x3b0 mm/slub.c:3502
zswap_entry_cache_alloc mm/zswap.c:299 [inline]
zswap_store+0x531/0x22d0 mm/zswap.c:1258
swap_writepage+0x8b/0x1e0 mm/page_io.c:198
pageout+0x399/0x9d0 mm/vmscan.c:1355
shrink_folio_list+0x2f36/0x3e30 mm/vmscan.c:2015
reclaim_folio_list+0xe4/0x3a0 mm/vmscan.c:2801
reclaim_pages+0x486/0x6a0 mm/vmscan.c:2837
madvise_cold_or_pageout_pte_range+0x1218/0x1db0 mm/madvise.c:533
walk_pmd_range mm/pagewalk.c:143 [inline]
walk_pud_range mm/pagewalk.c:221 [inline]
walk_p4d_range mm/pagewalk.c:256 [inline]
walk_pgd_range+0xa48/0x1870 mm/pagewalk.c:293
__walk_page_range+0x62e/0x770 mm/pagewalk.c:395
walk_page_range+0x625/0xa70 mm/pagewalk.c:521
madvise_pageout_page_range mm/madvise.c:592 [inline]
madvise_pageout+0x32c/0x820 mm/madvise.c:619
madvise_vma_behavior+0x1ce/0x1e50 mm/madvise.c:1041
madvise_walk_vmas+0x1cf/0x2c0 mm/madvise.c:1270
do_madvise+0x333/0x660 mm/madvise.c:1450
__do_sys_madvise mm/madvise.c:1463 [inline]
__se_sys_madvise mm/madvise.c:1461 [inline]
__x64_sys_madvise+0xaa/0x110 mm/madvise.c:1461
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fc05407cae9
RSP: 002b:00007fc054e660c8 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007fc05419c120 RCX: 00007fc05407cae9
RDX: 0000000000000015 RSI: 0000000000c00304 RDI: 0000000020000000
RBP: 00007fc0540c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fc05419c120 R15: 00007fc0542bfa48
rcu: rcu_preempt kthread starved for 8959 jiffies! g125185 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:28304 pid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0xee1/0x5a10 kernel/sched/core.c:6695
schedule+0xe7/0x1b0 kernel/sched/core.c:6771
schedule_timeout+0x157/0x2c0 kernel/time/timer.c:2167
rcu_gp_fqs_loop+0x1ec/0xa50 kernel/rcu/tree.c:1613
rcu_gp_kthread+0x249/0x380 kernel/rcu/tree.c:1812
kthread+0x33c/0x440 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.6.0-rc7-syzkaller-00142-g888cf78c29e2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x20/0x70 kernel/kcov.c:207
Code: 0f 1f 84 00 00 00 00 00 66 90 f3 0f 1e fa 65 8b 05 8d e2 7b 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 c0 bc 03 00 00 01 ff 00 74 0e 85 c9 74 35 8b 82 04 16 00 00 85 c0 74 2b 8b
RSP: 0018:ffffc90000007788 EFLAGS: 00000206
RAX: 0000000080000101 RBX: ffffc900000077b8 RCX: 0000000000000100
RDX: ffffffff8c895840 RSI: ffffffff813a502c RDI: 0000000000000005
RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffc90000007800
R13: ffffffff81758080 R14: ffffc90000007878 R15: ffffffff8c895840
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00016dfc0 CR3: 000000002a281000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
unwind_get_return_address+0x8c/0xe0 arch/x86/kernel/unwind_orc.c:369
arch_stack_walk+0xbe/0x170 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x96/0xd0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
kasan_set_track+0x25/0x30 mm/kasan/common.c:52
__kasan_slab_alloc+0x81/0x90 mm/kasan/common.c:328
kasan_slab_alloc include/linux/kasan.h:188 [inline]
slab_post_alloc_hook mm/slab.h:762 [inline]
slab_alloc_node mm/slub.c:3478 [inline]
kmem_cache_alloc_node+0x180/0x3f0 mm/slub.c:3523
__alloc_skb+0x287/0x330 net/core/skbuff.c:640
alloc_skb include/linux/skbuff.h:1286 [inline]
bcm_can_tx+0x24b/0x840 net/can/bcm.c:289
bcm_tx_timeout_handler+0x1e9/0x570 net/can/bcm.c:425
__run_hrtimer kernel/time/hrtimer.c:1688 [inline]
__hrtimer_run_queues+0x203/0xc10 kernel/time/hrtimer.c:1752
hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1769
__do_softirq+0x218/0x965 kernel/softirq.c:553
invoke_softirq kernel/softirq.c:427 [inline]
__irq_exit_rcu kernel/softirq.c:632 [inline]
irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644
sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1074
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:72 [inline]
RIP: 0010:acpi_safe_halt+0x1b/0x20 drivers/acpi/processor_idle.c:113
Code: ed c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 65 48 8b 04 25 c0 bc 03 00 48 8b 00 a8 08 75 0c 66 90 0f 00 2d c7 58 b6 00 fb f4 c3 0f 1f 00 0f b6 47 08 3c 01 74 0b 3c 02 74 05 8b 7f 04 eb 9f
RSP: 0018:ffffffff8c807d68 EFLAGS: 00000246
RAX: 0000000000004000 RBX: 0000000000000001 RCX: ffffffff8a3de77e
RDX: 0000000000000001 RSI: ffff88801566b800 RDI: ffff88801566b864
RBP: ffff88801566b864 R08: 0000000000000001 R09: ffffed1017306dbd
R10: ffff8880b9836deb R11: 0000000000000000 R12: ffff8880172ef000
R13: ffffffff8d6616a0 R14: 0000000000000000 R15: 0000000000000000
acpi_idle_enter+0xc5/0x160 drivers/acpi/processor_idle.c:707
cpuidle_enter_state+0x82/0x500 drivers/cpuidle/cpuidle.c:267
cpuidle_enter+0x4e/0xa0 drivers/cpuidle/cpuidle.c:388
cpuidle_idle_call kernel/sched/idle.c:215 [inline]
do_idle+0x315/0x3f0 kernel/sched/idle.c:282
cpu_startup_entry+0x50/0x60 kernel/sched/idle.c:380
rest_init+0x16f/0x2b0 init/main.c:726
arch_call_rest_init+0x13/0x30 init/main.c:823
start_kernel+0x39f/0x480 init/main.c:1068
x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:556
x86_64_start_kernel+0xb2/0xc0 arch/x86/kernel/head64.c:537
secondary_startup_64_no_verify+0x166/0x16b