rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P144/1:b..l
(detected by 1, t=10502 jiffies, g=13581, q=315)
task:kworker/u4:1 state:R running task stack:25688 pid: 144 ppid: 2 flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
context_switch kernel/sched/core.c:5027 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6373
preempt_schedule_irq+0xf7/0x1c0 kernel/sched/core.c:6777
irqentry_exit+0x53/0x80 kernel/entry/common.c:432
asm_sysvec_reschedule_ipi+0x16/0x20 arch/x86/include/asm/idtentry.h:681
RIP: 0010:lock_acquire+0x252/0x4f0 kernel/locking/lockdep.c:5627
Code: 2b 00 74 08 4c 89 f7 e8 9c 9e 67 00 f6 44 24 61 02 0f 85 84 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:ffffc9000170fa80 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff920002e1f5c RCX: 1ffff920002e1efc
RDX: dffffc0000000000 RSI: ffffffff8aab3e20 RDI: ffffffff8af9f2c0
RBP: ffffc9000170fbd8 R08: dffffc0000000000 R09: fffffbfff2131821
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff920002e1f58
R13: dffffc0000000000 R14: ffffc9000170fae0 R15: 0000000000000246
rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:312
rcu_read_lock include/linux/rcupdate.h:739 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:412 [inline]
batadv_nc_worker+0xc1/0x5b0 net/batman-adv/network-coding.c:723
process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
kthread+0x3f6/0x4f0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
rcu: rcu_preempt kthread starved for 10523 jiffies! g13581 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:26712 pid: 15 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5027 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6373
schedule+0x11b/0x1f0 kernel/sched/core.c:6456
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1914
rcu_gp_fqs_loop+0x2bf/0x1080 kernel/rcu/tree.c:1972
rcu_gp_kthread+0xa4/0x360 kernel/rcu/tree.c:2145
kthread+0x3f6/0x4f0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
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: 3508 Comm: jbd2/sda1-8 Not tainted 5.15.178-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:unwind_next_frame+0xa22/0x1fa0 arch/x86/kernel/unwind_orc.c:535
Code: 0f b6 04 10 84 c0 0f 85 59 13 00 00 4c 89 e8 48 c1 e8 03 0f b6 04 10 84 c0 0f 85 70 13 00 00 49 0f bf 06 48 01 c3 48 89 1c 24 <48> 8d 5d 01 41 0f b6 04 14 84 c0 0f 85 b3 0e 00 00 49 89 dd 49 c1
RSP: 0018:ffffc9000ddd6728 EFLAGS: 00000286
RAX: 0000000000000010 RBX: ffffc9000ddd7478 RCX: ffffffff8e35e448
RDX: dffffc0000000000 RSI: ffffffff8ead390e RDI: ffffffff8e35e444
RBP: ffffffff8ead3912 R08: 0000000000000001 R09: ffffc9000ddd68d0
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffffffff1d5a722
R13: ffffffff8ead390f R14: ffffffff8ead390e R15: ffffc9000ddd67e0
FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5123c4fd80 CR3: 00000000253d9000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
__kasan_slab_alloc+0x8e/0xc0 mm/kasan/common.c:467
kasan_slab_alloc include/linux/kasan.h:254 [inline]
slab_post_alloc_hook+0x53/0x380 mm/slab.h:519
slab_alloc_node mm/slub.c:3220 [inline]
slab_alloc mm/slub.c:3228 [inline]
kmem_cache_alloc+0xf3/0x280 mm/slub.c:3233
kmem_cache_zalloc include/linux/slab.h:711 [inline]
fill_pool lib/debugobjects.c:172 [inline]
__debug_object_init+0x8b1/0xd30 lib/debugobjects.c:615
scsi_initialize_rq drivers/scsi/scsi_lib.c:1097 [inline]
scsi_init_command+0x1b4/0x6e0 drivers/scsi/scsi_lib.c:1128
scsi_prepare_cmd drivers/scsi/scsi_lib.c:1544 [inline]
scsi_queue_rq+0x13e9/0x2ed0 drivers/scsi/scsi_lib.c:1683
blk_mq_dispatch_rq_list+0xaca/0x1f30 block/blk-mq.c:1386
__blk_mq_do_dispatch_sched block/blk-mq-sched.c:200 [inline]
blk_mq_do_dispatch_sched+0x755/0xd50 block/blk-mq-sched.c:214
__blk_mq_sched_dispatch_requests+0x39b/0x490
blk_mq_sched_dispatch_requests+0xf3/0x1b0 block/blk-mq-sched.c:366
__blk_mq_run_hw_queue+0x11a/0x1b0 block/blk-mq.c:1511
__blk_mq_delay_run_hw_queue+0x199/0x640 block/blk-mq.c:1588
blk_mq_run_hw_queue+0x1d5/0x3c0 block/blk-mq.c:1641
blk_mq_sched_insert_requests+0x2cd/0x570 block/blk-mq-sched.c:519
blk_mq_flush_plug_list+0x5de/0x6b0 block/blk-mq.c:1971
blk_flush_plug_list+0x44b/0x490 block/blk-core.c:1734
blk_finish_plug+0x59/0x80 block/blk-core.c:1751
jbd2_journal_commit_transaction+0x3484/0x6840 fs/jbd2/commit.c:828
kjournald2+0x4ae/0x940 fs/jbd2/journal.c:213
kthread+0x3f6/0x4f0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287