rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P13171/1:b..l P13180/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=172249, q=696 ncpus=2)
task:syz.3.1626 state:R running task stack:26096 pid:13180 tgid:13173 ppid:12750 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6745
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7067
irqentry_exit+0x36/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x1f2/0x560 kernel/locking/lockdep.c:5722
Code: c1 05 1a ad 96 7e 83 f8 01 0f 85 ea 02 00 00 9c 58 f6 c4 02 0f 85 d5 02 00 00 48 85 ed 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc90003247540 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff92000648eaa RCX: 00000000f014e05e
RDX: 0000000000000001 RSI: ffffffff8b2cb1e0 RDI: ffffffff8b8ff600
RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff284ca58
R10: ffffffff942652c7 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8dbb1620 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
rcu_read_lock include/linux/rcupdate.h:781 [inline]
percpu_ref_put_many include/linux/percpu-refcount.h:330 [inline]
percpu_ref_put include/linux/percpu-refcount.h:351 [inline]
css_put include/linux/cgroup_refcnt.h:79 [inline]
css_put include/linux/cgroup_refcnt.h:76 [inline]
__mem_cgroup_charge+0x11c/0x280 mm/memcontrol.c:7511
mem_cgroup_charge include/linux/memcontrol.h:691 [inline]
shmem_alloc_and_add_folio+0x1dd/0x790 mm/shmem.c:1677
shmem_get_folio_gfp+0x687/0x13d0 mm/shmem.c:2055
shmem_fault+0x205/0xaf0 mm/shmem.c:2255
__do_fault+0x10a/0x490 mm/memory.c:4556
do_read_fault mm/memory.c:4921 [inline]
do_fault mm/memory.c:5051 [inline]
do_pte_missing mm/memory.c:3897 [inline]
handle_pte_fault mm/memory.c:5381 [inline]
__handle_mm_fault+0x3a1e/0x5430 mm/memory.c:5524
handle_mm_fault+0x476/0xa00 mm/memory.c:5689
faultin_page mm/gup.c:1290 [inline]
__get_user_pages+0x473/0x1490 mm/gup.c:1589
populate_vma_page_range+0x27f/0x3a0 mm/gup.c:2029
__mm_populate+0x1d6/0x380 mm/gup.c:2132
mm_populate include/linux/mm.h:3469 [inline]
vm_mmap_pgoff+0x293/0x360 mm/util.c:578
ksys_mmap_pgoff+0x7d/0x5d0 mm/mmap.c:1443
__do_sys_mmap arch/x86/kernel/sys_x86_64.c:86 [inline]
__se_sys_mmap arch/x86/kernel/sys_x86_64.c:79 [inline]
__x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:79
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5b40b75bd9
RSP: 002b:00007f5b4191d048 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f5b40d04110 RCX: 00007f5b40b75bd9
RDX: b635773f06ebbeee RSI: 0000000000b36000 RDI: 0000000020000000
RBP: 00007f5b40be4e60 R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000008031 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f5b40d04110 R15: 00007ffe3a9c67f8
task:syz.2.1625 state:R running task stack:25904 pid:13171 tgid:13170 ppid:12660 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6745
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7067
irqentry_exit+0x36/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:kasan_check_range+0x158/0x1a0 mm/kasan/generic.c:190
Code: 74 11 80 38 00 74 ef 4d 8d 1c 2c 48 85 c0 48 89 c2 75 93 48 89 da 4c 89 d8 4c 29 da e9 2c ff ff ff 5b b8 01 00 00 00 5d 41 5c cc cc cc cc b8 01 00 00 00 c3 cc cc cc cc 48 29 c3 48 89 da 49
RSP: 0018:ffffc900033af398 EFLAGS: 00000246
RAX: 0000000000000001 RBX: ffffea0001761640 RCX: ffffffff81c04c12
RDX: fffff940002ec2cf RSI: 0000000000000004 RDI: ffffea0001761674
RBP: ffffea0001761674 R08: 0000000000000001 R09: fffff940002ec2ce
R10: ffffea0001761677 R11: 0000000000000000 R12: ffffea0001761600
R13: dffffc0000000000 R14: ffffc900033af6b0 R15: ffffc900033af408
instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
atomic_add_unless include/linux/atomic/atomic-instrumented.h:1517 [inline]
page_ref_add_unless include/linux/page_ref.h:233 [inline]
folio_ref_add_unless include/linux/page_ref.h:242 [inline]
folio_ref_try_add_rcu include/linux/page_ref.h:275 [inline]
folio_try_get_rcu include/linux/page_ref.h:308 [inline]
find_get_entry mm/filemap.c:2004 [inline]
find_lock_entries+0x1c2/0xc80 mm/filemap.c:2091
shmem_undo_range+0x217/0x1160 mm/shmem.c:987
shmem_truncate_range mm/shmem.c:1114 [inline]
shmem_evict_inode+0x3a3/0xbb0 mm/shmem.c:1242
evict+0x2ed/0x6c0 fs/inode.c:667
iput_final fs/inode.c:1741 [inline]
iput.part.0+0x5a8/0x7f0 fs/inode.c:1767
iput+0x5c/0x80 fs/inode.c:1757
dentry_unlink_inode+0x295/0x480 fs/dcache.c:400
__dentry_kill+0x1d0/0x600 fs/dcache.c:603
dput.part.0+0x4b1/0x9b0 fs/dcache.c:845
dput+0x1f/0x30 fs/dcache.c:835
__fput+0x54e/0xbb0 fs/file_table.c:430
task_work_run+0x14e/0x250 kernel/task_work.c:180
exit_task_work include/linux/task_work.h:38 [inline]
do_exit+0xa9b/0x2ba0 kernel/exit.c:876
do_group_exit+0xd3/0x2a0 kernel/exit.c:1025
get_signal+0x2616/0x2710 kernel/signal.c:2909
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x14a/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f98f3375bd9
RSP: 002b:00007f98f41dd048 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: 000000000000000b RBX: 00007f98f3503f60 RCX: 00007f98f3375bd9
RDX: 0000000000000651 RSI: 0000000020000000 RDI: 0000000000000007
RBP: 00007f98f33e4e60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f98f3503f60 R15: 00007ffc8f4eb248
rcu: rcu_preempt kthread starved for 10235 jiffies! g172249 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:27680 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6837
schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2581
rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2000
rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2202
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 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:
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.10.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
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+0x1a/0x20 drivers/acpi/processor_idle.c:113
Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 65 48 8b 05 88 54 1c 75 48 8b 00 a8 08 75 0c 66 90 0f 00 2d 38 ae b3 00 fb f4 c3 cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffffff8d807d70 EFLAGS: 00000246
RAX: 0000000000004000 RBX: 0000000000000001 RCX: ffffffff8ae76799
RDX: 0000000000000001 RSI: ffff8880196c3800 RDI: ffff8880196c3864
RBP: ffff8880196c3864 R08: 0000000000000001 R09: ffffed1017246fdd
R10: ffff8880b9237eeb R11: 0000000000000000 R12: ffff888019fbe000
R13: ffffffff8e741cc0 R14: 0000000000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b33afeff8 CR3: 000000007b93e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
acpi_idle_enter+0xc5/0x160 drivers/acpi/processor_idle.c:707
cpuidle_enter_state+0x85/0x500 drivers/cpuidle/cpuidle.c:267
cpuidle_enter+0x4e/0xa0 drivers/cpuidle/cpuidle.c:388
cpuidle_idle_call kernel/sched/idle.c:236 [inline]
do_idle+0x313/0x3f0 kernel/sched/idle.c:332
cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:430
rest_init+0x16b/0x2b0 init/main.c:747
start_kernel+0x3df/0x4c0 init/main.c:1103
x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:507
x86_64_start_kernel+0xb2/0xc0 arch/x86/kernel/head64.c:488
common_startup_64+0x13e/0x148