rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P16405/1:b..l P1101/1:b..l
rcu: (detected by 1, t=10502 jiffies, g=101769, q=704 ncpus=2)
task:kworker/u8:5 state:R running task stack:20560 pid:1101 tgid:1101 ppid:2 flags:0x00004000
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
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:rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
RIP: 0010:rcu_read_lock include/linux/rcupdate.h:781 [inline]
RIP: 0010:batadv_iv_ogm_slide_own_bcast_window net/batman-adv/bat_iv_ogm.c:754 [inline]
RIP: 0010:batadv_iv_ogm_schedule_buff net/batman-adv/bat_iv_ogm.c:825 [inline]
RIP: 0010:batadv_iv_ogm_schedule+0x43a/0x1090 net/batman-adv/bat_iv_ogm.c:868
Code: 7d 00 e8 c9 10 31 f6 48 8d 05 00 00 00 00 48 c7 c7 a0 3f 33 8e 31 f6 31 d2 b9 02 00 00 00 45 31 c0 45 31 c9 48 89 44 24 58 50 71 46 26 f6 48 83 c4 08 e8 08 80 3a 00 89 c3 31 ff 89 c6 e8 9d
RSP: 0018:ffffc900044479b8 EFLAGS: 00000246
RAX: ffffffff8b4c1e6e RBX: 00000000000003e8 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e333fa0
RBP: ffffc90004447af8 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1f5aa16 R12: ffff88805c1b4800
R13: ffff8880467af1c0 R14: dffffc0000000000 R15: ffff88806a4d9f40
batadv_iv_send_outstanding_bat_ogm_packet+0x6fe/0x810 net/batman-adv/bat_iv_ogm.c:1712
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd70 kernel/workqueue.c:3393
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
task:modprobe state:R running task stack:23680 pid:16405 tgid:16405 ppid:11313 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:mas_safe_pivot lib/maple_tree.c:701 [inline]
RIP: 0010:mas_validate_gaps lib/maple_tree.c:7318 [inline]
RIP: 0010:mt_validate+0x2770/0x4aa0 lib/maple_tree.c:7596
Code: 28 84 c0 0f 85 49 03 00 00 0f b6 1a 4c 89 e7 48 89 de e8 73 c2 19 f6 49 39 dc 0f 83 f5 03 00 00 e8 05 c0 19 f6 48 8b 5c 24 70 <48> 89 d8 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 35 03 00 00 0f b6
RSP: 0018:ffffc9000c3572c0 EFLAGS: 00000293
RAX: ffffffff8b7c66fb RBX: ffffffff8cec6701 RCX: ffff888061a6bc00
RDX: 0000000000000000 RSI: 0000000000000010 RDI: 000000000000000e
RBP: ffffc9000c3574b0 R08: ffffffff8b7c66ed R09: ffffffff8b7e5a4b
R10: 0000000000000004 R11: ffff888061a6bc00 R12: 000000000000000e
R13: dffffc0000000000 R14: 0000000000000001 R15: 0000002a67a40000
validate_mm+0xe7/0x530 mm/mmap.c:288
__split_vma+0xaca/0xc30 mm/mmap.c:2440
do_vmi_align_munmap+0x433/0x18c0 mm/mmap.c:2605
do_vmi_munmap+0x261/0x2f0 mm/mmap.c:2759
mmap_region+0x72f/0x2090 mm/mmap.c:2810
do_mmap+0x8ad/0xfa0 mm/mmap.c:1397
vm_mmap_pgoff+0x1dd/0x3d0 mm/util.c:573
ksys_mmap_pgoff+0x4f1/0x720 mm/mmap.c:1443
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: 0033:0x7fd37c84bb74
RSP: 002b:00007ffde42bf178 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007ffde42bf1f0 RCX: 00007fd37c84bb74
RDX: 0000000000000001 RSI: 0000000000025000 RDI: 00007fd37c556000
RBP: 00007ffde42bf510 R08: 0000000000000000 R09: 000000000002e000
R10: 0000000000000812 R11: 0000000000000246 R12: 00007fd37c829570
R13: 00007ffde42bf598 R14: 000000000002d9c6 R15: 0000000000000000
rcu: rcu_preempt kthread starved for 10577 jiffies! g101769 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:25232 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
CPU: 0 PID: 16402 Comm: syz-executor.4 Not tainted 6.10.0-rc3-syzkaller-00044-g2ccbdf43d5e7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:200
Code: 89 fb e8 23 00 00 00 48 8b 3d cc ab 45 0c 48 89 de 5b e9 73 4f 5a 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 48 8b 04 24 65 48 8b 0c 25 00 d5 03 00 65 8b 15 f0 ad
RSP: 0018:ffffc900092f7538 EFLAGS: 00000012
RAX: f2f20000f1f1f1f1 RBX: dffffc0000000000 RCX: ffffffff817c6b56
RDX: 0000000000000000 RSI: ffffffff8bcc1400 RDI: ffff88804fd40c00
RBP: ffffc900092f7640 R08: ffffffff8fad50af R09: 1ffffffff1f5aa15
R10: dffffc0000000000 R11: ffffffff817afd20 R12: ffffc900092f75c0
R13: ffff88804fd40c00 R14: ffffffff8bcc1400 R15: 1ffff9200125eeb0
FS: 00007fe42027e6c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fffd152ad78 CR3: 00000000662b6000 CR4: 0000000000350ef0
Call Trace:
bpf_trace_run1+0x8a/0x520 kernel/trace/bpf_trace.c:2443
__traceiter_rcu_utilization+0x76/0xb0 include/trace/events/rcu.h:27
trace_rcu_utilization+0x1b4/0x1e0 include/trace/events/rcu.h:27
rcu_note_context_switch+0xc7c/0xff0 kernel/rcu/tree_plugin.h:360
__schedule+0x348/0x4a20 kernel/sched/core.c:6634
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6837
futex_wait_queue+0x14e/0x1d0 kernel/futex/waitwake.c:370
__futex_wait+0x17f/0x320 kernel/futex/waitwake.c:669
futex_wait+0x101/0x360 kernel/futex/waitwake.c:697
do_futex+0x33b/0x560 kernel/futex/syscalls.c:102
__do_sys_futex kernel/futex/syscalls.c:179 [inline]
__se_sys_futex+0x3f9/0x480 kernel/futex/syscalls.c:160
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: 0033:0x7fe41f47cea9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe42027e178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007fe41f5b4058 RCX: 00007fe41f47cea9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fe41f5b4058
RBP: 00007fe41f5b4050 R08: 00007fe42027e6c0 R09: 00007fe42027e6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe41f5b405c
R13: 000000000000006e R14: 00007ffe9304b680 R15: 00007ffe9304b768