rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P4818/1:b..l P4823/1:b..l P4426/1:b..l
(detected by 0, t=10502 jiffies, g=13301, q=332 ncpus=2)
task:udevd state:R running task stack:24352 pid:4426 ppid:3624 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x10e9/0x40d0 kernel/sched/core.c:6561
preempt_schedule_common+0x82/0xd0 kernel/sched/core.c:6730
preempt_schedule+0xa7/0xb0 kernel/sched/core.c:6754
preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
_raw_spin_unlock_irq+0x3c/0x40 kernel/locking/spinlock.c:202
spin_unlock_irq include/linux/spinlock.h:401 [inline]
loop_queue_work drivers/block/loop.c:894 [inline]
loop_queue_rq+0x9d9/0xac0 drivers/block/loop.c:1874
__blk_mq_issue_directly block/blk-mq.c:2631 [inline]
__blk_mq_try_issue_directly+0x4ab/0x7a0 block/blk-mq.c:2684
blk_mq_request_issue_directly block/blk-mq.c:2718 [inline]
blk_mq_plug_issue_direct+0x233/0x620 block/blk-mq.c:2738
blk_mq_flush_plug_list+0x7e7/0xd40 block/blk-mq.c:2838
__blk_flush_plug+0x3c6/0x440 block/blk-core.c:1163
blk_finish_plug+0x59/0x80 block/blk-core.c:1187
read_pages+0x646/0x840 mm/readahead.c:184
page_cache_ra_unbounded+0x690/0x770 mm/readahead.c:270
do_page_cache_ra mm/readahead.c:300 [inline]
force_page_cache_ra mm/readahead.c:331 [inline]
page_cache_sync_ra+0x3d7/0x490 mm/readahead.c:713
page_cache_sync_readahead include/linux/pagemap.h:1248 [inline]
filemap_get_pages mm/filemap.c:2665 [inline]
filemap_read+0x5ff/0x2f80 mm/filemap.c:2759
blkdev_read_iter+0x3d5/0x500 block/fops.c:614
call_read_iter include/linux/fs.h:2259 [inline]
new_sync_read fs/read_write.c:389 [inline]
vfs_read+0x434/0x920 fs/read_write.c:470
ksys_read+0x143/0x240 fs/read_write.c:613
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: 0033:0x7fa0c26a7407
RSP: 002b:00007fff945f1a30 EFLAGS: 00000202 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007fa0c2d5a880 RCX: 00007fa0c26a7407
RDX: 0000000000000200 RSI: 00007fa0c2d46000 RDI: 0000000000000009
RBP: 0000563a88d0e000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 00000000001fea00 R14: 0000563a88d43f68 R15: 00007fa0c2e8139c
task:syz.0.123 state:R running task stack:25248 pid:4823 ppid:4258 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x10e9/0x40d0 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_acquire+0x20f/0x490 kernel/locking/lockdep.c:5666
Code: 00 9c 8f 84 24 80 00 00 00 f6 84 24 81 00 00 00 02 0f 85 f5 00 00 00 41 f7 c6 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 44 3d 00 00 00 00 00 66 43 c7 44 3d 09 00 00 43 c6 44 3d 0b
RSP: 0018:ffffc9000c8ff4c0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 0000000000000000 RCX: fef67b24444b0600
RDX: 0000000000000000 RSI: ffffffff8a6c1160 RDI: ffffffff8abf14a0
RBP: ffffc9000c8ff5c8 R08: dffffc0000000000 R09: fffffbfff2117249
R10: fffffbfff2117249 R11: 1ffffffff2117248 R12: 0000000000000000
R13: 1ffff9200191fea4 R14: 0000000000000246 R15: dffffc0000000000
rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
rcu_read_lock include/linux/rcupdate.h:791 [inline]
mapping_get_entry mm/filemap.c:1878 [inline]
__filemap_get_folio+0x111/0xdd0 mm/filemap.c:1943
shmem_get_folio_gfp+0x310/0x3400 mm/shmem.c:1881
shmem_fault+0x1be/0x7b0 mm/shmem.c:2156
__do_fault+0x13b/0x4e0 mm/memory.c:4280
do_read_fault mm/memory.c:4631 [inline]
do_fault mm/memory.c:4760 [inline]
handle_pte_fault mm/memory.c:5031 [inline]
__handle_mm_fault mm/memory.c:5173 [inline]
handle_mm_fault+0x28ca/0x3e70 mm/memory.c:5294
faultin_page mm/gup.c:1026 [inline]
__get_user_pages+0x3ff/0xeb0 mm/gup.c:1250
populate_vma_page_range+0x214/0x2b0 mm/gup.c:1607
__mm_populate+0x248/0x370 mm/gup.c:1721
mm_populate include/linux/mm.h:2826 [inline]
vm_mmap_pgoff+0x203/0x2b0 mm/util.c:525
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: 0033:0x7f4bd8f8e929
RSP: 002b:00007f4bd9d99038 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f4bd91b5fa0 RCX: 00007f4bd8f8e929
RDX: b635773f06ebbeee RSI: 0000000000b36000 RDI: 0000200000000000
RBP: 00007f4bd9010b39 R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000008031 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f4bd91b5fa0 R15: 00007fff27de7648
task:syz.3.118 state:R running task stack:25696 pid:4818 ppid:4252 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x10e9/0x40d0 kernel/sched/core.c:6561
preempt_schedule_common+0x82/0xd0 kernel/sched/core.c:6730
preempt_schedule+0xa7/0xb0 kernel/sched/core.c:6754
preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
_raw_spin_unlock_irq+0x3c/0x40 kernel/locking/spinlock.c:202
spin_unlock_irq include/linux/spinlock.h:401 [inline]
loop_queue_work drivers/block/loop.c:894 [inline]
loop_queue_rq+0x9d9/0xac0 drivers/block/loop.c:1874
__blk_mq_issue_directly block/blk-mq.c:2631 [inline]
__blk_mq_try_issue_directly+0x4ab/0x7a0 block/blk-mq.c:2684
blk_mq_try_issue_directly+0x28/0x1f0 block/blk-mq.c:2708
blk_mq_submit_bio+0x1221/0x1f80 block/blk-mq.c:3045
__submit_bio+0x1a7/0x290 block/blk-core.c:591
__submit_bio_noacct_mq block/blk-core.c:668 [inline]
submit_bio_noacct_nocheck+0x7b4/0xa70 block/blk-core.c:697
ntfs_read_block fs/ntfs/aops.c:345 [inline]
ntfs_read_folio+0x1ffe/0x2980 fs/ntfs/aops.c:436
filemap_read_folio+0x160/0x760 mm/filemap.c:2490
do_read_cache_folio+0x2a0/0x760 mm/filemap.c:3627
do_read_cache_page+0x32/0x220 mm/filemap.c:3669
read_mapping_page include/linux/pagemap.h:791 [inline]
ntfs_map_page fs/ntfs/aops.h:75 [inline]
load_and_init_upcase fs/ntfs/super.c:1678 [inline]
load_system_files+0x15d3/0x4460 fs/ntfs/super.c:1810
ntfs_fill_super+0x182a/0x2a60 fs/ntfs/super.c:2892
mount_bdev+0x287/0x3c0 fs/super.c:1443
legacy_get_tree+0xe6/0x180 fs/fs_context.c:632
vfs_get_tree+0x88/0x270 fs/super.c:1573
do_new_mount+0x24a/0xa40 fs/namespace.c:3058
do_mount fs/namespace.c:3401 [inline]
__do_sys_mount fs/namespace.c:3609 [inline]
__se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3586
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: 0033:0x7fb81b1900ca
RSP: 002b:00007fb81bfd0e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fb81bfd0ef0 RCX: 00007fb81b1900ca
RDX: 0000200000000000 RSI: 0000200000000080 RDI: 00007fb81bfd0eb0
RBP: 0000200000000000 R08: 00007fb81bfd0ef0 R09: 0000000000000802
R10: 0000000000000802 R11: 0000000000000246 R12: 0000200000000080
R13: 00007fb81bfd0eb0 R14: 000000000001ee6e R15: 0000200000000940
rcu: rcu_preempt kthread starved for 10612 jiffies! g13301 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+0x10e9/0x40d0 kernel/sched/core.c:6561
schedule+0xb9/0x180 kernel/sched/core.c:6637
schedule_timeout+0x15c/0x280 kernel/time/timer.c:1965
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