rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5037/1:b..l P4458/1:b..l P4932/1:b..l
(detected by 0, t=10502 jiffies, g=12049, q=141 ncpus=2)
task:syz.2.59 state:R running task stack:22536 pid:4932 ppid:4280 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x10ec/0x40b0 kernel/sched/core.c:6561
preempt_schedule_irq+0xb1/0x150 kernel/sched/core.c:6873
irqentry_exit+0x63/0x70 kernel/entry/common.c:439
asm_sysvec_reschedule_ipi+0x16/0x20 arch/x86/include/asm/idtentry.h:696
RIP: 0010:__preempt_count_add kernel/rcu/tree.c:717 [inline]
RIP: 0010:rcu_is_watching+0x2/0xa0 kernel/rcu/tree.c:720
Code: eb 99 e8 31 4e a5 08 48 c7 c7 20 1c 93 8c 4c 89 f6 e8 92 9b c3 02 e9 53 ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 41 57 <41> 56 53 65 ff 05 cc 50 97 7e e8 af 62 a5 08 89 c3 83 f8 08 73 60
RSP: 0018:ffffc9000ea66cf8 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffffff81d84f99 RCX: ffff8880291f8000
RDX: 0000000000000000 RSI: ffffffff8a6c1780 RDI: ffffffff8abef920
RBP: 0000000000000cc0 R08: dffffc0000000000 R09: fffffbfff2119049
R10: fffffbfff2119049 R11: 1ffffffff2119048 R12: 0000000000000cc0
R13: dffffc0000000000 R14: ffff88807aab4010 R15: 0000000000000000
rcu_read_lock include/linux/rcupdate.h:792 [inline]
percpu_ref_put_many include/linux/percpu-refcount.h:330 [inline]
percpu_ref_put+0x47/0x180 include/linux/percpu-refcount.h:351
css_put include/linux/cgroup.h:407 [inline]
__mem_cgroup_charge+0x52/0x80 mm/memcontrol.c:6945
mem_cgroup_charge include/linux/memcontrol.h:672 [inline]
shmem_add_to_page_cache+0x8fc/0x1c00 mm/shmem.c:708
shmem_get_folio_gfp+0x158b/0x3400 mm/shmem.c:1971
shmem_get_folio mm/shmem.c:2072 [inline]
shmem_write_begin+0xee/0x3f0 mm/shmem.c:2556
generic_perform_write+0x2f7/0x5a0 mm/filemap.c:3862
__generic_file_write_iter+0x148/0x2a0 mm/filemap.c:3960
generic_file_write_iter+0xab/0x2e0 mm/filemap.c:3989
__kernel_write_iter+0x26d/0x630 fs/read_write.c:517
dump_emit_page fs/coredump.c:950 [inline]
dump_user_range+0x3ea/0x7f0 fs/coredump.c:977
elf_core_dump+0x2f77/0x3490 fs/binfmt_elf.c:2354
do_coredump+0x15ff/0x22b0 fs/coredump.c:824
get_signal+0x10aa/0x1350 kernel/signal.c:2857
arch_do_signal_or_restart+0xb7/0x1240 arch/x86/kernel/signal.c:871
exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:316
exc_page_fault+0x88/0x100 arch/x86/mm/fault.c:1490
asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:608
RIP: 0033:0x7f095f18f751
RSP: 002b:0000000000000040 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f095f3e5fa0 RCX: 00007f095f18f749
RDX: 0000000000000000 RSI: 0000000000000040 RDI: 0000000081248080
RBP: 00007f095f213f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 00007f095f3e6038 R14: 00007f095f3e5fa0 R15: 00007fffdad4d598
task:kworker/u4:18 state:R running task stack:24752 pid:4458 ppid:2 flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x10ec/0x40b0 kernel/sched/core.c:6561
preempt_schedule_irq+0xb1/0x150 kernel/sched/core.c:6873
irqentry_exit+0x63/0x70 kernel/entry/common.c:439
asm_sysvec_reschedule_ipi+0x16/0x20 arch/x86/include/asm/idtentry.h:696
RIP: 0010:lock_acquire+0x27/0x490 kernel/locking/lockdep.c:5630
Code: 95 c0 c3 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec e0 00 00 00 4c 89 4c 24 18 4c 89 44 24 30 48 89 4c 24 28 <89> d3 89 74 24 14 48 89 7c 24 20 65 48 8b 04 25 28 00 00 00 48 89
RSP: 0018:ffffc9000523fac0 EFLAGS: 00000286
RAX: 0000000000000001 RBX: ffff88805873aa80 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8c92b120
RBP: ffffc9000523fbc8 R08: 0000000000000000 R09: 0000000000000000
R10: fffffbfff1bfe1c6 R11: 1ffffffff1bfe1c5 R12: dffffc0000000000
R13: ffffffff89da6a6e R14: ffff88802401cc80 R15: 00000000000003ca
rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
rcu_read_lock include/linux/rcupdate.h:791 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0xeb/0x600 net/batman-adv/network-coding.c:719
process_one_work+0x898/0x1160 kernel/workqueue.c:2292
worker_thread+0xaa2/0x1250 kernel/workqueue.c:2439
kthread+0x29d/0x330 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
task:udevadm state:R running task stack:24352 pid:5037 ppid:4379 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x10ec/0x40b0 kernel/sched/core.c:6561
preempt_schedule_irq+0xb1/0x150 kernel/sched/core.c:6873
irqentry_exit+0x63/0x70 kernel/entry/common.c:439
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:lock_is_held_type+0x4c/0x190 kernel/locking/lockdep.c:5698
Code: 3d cc d3 ee 03 00 0f 84 03 01 00 00 65 8b 05 5b 0a f2 75 85 c0 0f 85 f4 00 00 00 65 48 8b 1d 0b 00 f2 75 83 bb dc 0a 00 00 00 <0f> 85 df 00 00 00 41 89 f7 49 89 fe 48 c7 04 24 00 00 00 00 9c 8f
RSP: 0018:ffffc90003617638 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff88807e9cd940 RCX: ffff88807e9cd940
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffff8880174688d8
RBP: 00000000ffffffff R08: ffff88807e9cd940 R09: 0000000000000003
R10: 0000000000000003 R11: 0000000000000000 R12: dffffc0000000000
R13: ffffffff8b90fc83 R14: 0000000000000000 R15: ffff88807e93bc0c
lock_is_held include/linux/lockdep.h:283 [inline]
mt_locked lib/maple_tree.c:-1 [inline]
mt_slot lib/maple_tree.c:816 [inline]
mas_slot lib/maple_tree.c:849 [inline]
mas_validate_child_slot lib/maple_tree.c:7079 [inline]
mt_validate+0x1460/0x4c90 lib/maple_tree.c:7243
validate_mm_mt+0xcd/0x420 mm/mmap.c:295
validate_mm+0xcc/0x2b0 mm/mmap.c:332
mmap_region+0x780/0x1c70 mm/mmap.c:2922
do_mmap+0x958/0xfd0 mm/mmap.c:1436
vm_mmap_pgoff+0x1b2/0x2b0 mm/util.c:520
ksys_mmap_pgoff+0x516/0x6f0 mm/mmap.c:1482
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fc297dc0242
RSP: 002b:00007ffc74f10ae8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007fc297cf3000 RCX: 00007fc297dc0242
RDX: 0000000000000003 RSI: 0000000000002000 RDI: 00007fc297cf3000
RBP: 0000000000000812 R08: 0000000000000003 R09: 0000000000017000
R10: 0000000000000812 R11: 0000000000000206 R12: 00007ffc74f10ba8
R13: 00007fc297d9d050 R14: 00007ffc74f10f20 R15: 00000fff8e9e2160
rcu: rcu_preempt kthread starved for 10602 jiffies! g12049 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:27840 pid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x10ec/0x40b0 kernel/sched/core.c:6561
schedule+0xb9/0x180 kernel/sched/core.c:6637
schedule_timeout+0x15c/0x280 kernel/time/timer.c:2168
rcu_gp_fqs_loop+0x2f2/0x1310 kernel/rcu/tree.c:1706
rcu_gp_kthread+0x95/0x380 kernel/rcu/tree.c:1905
kthread+0x29d/0x330 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
NMI backtrace for cpu 1 skipped: idling at default_idle+0xb/0x10 arch/x86/kernel/process.c:741
sched: RT throttling activated