rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...!: (2 ticks this GP) idle=8ea4/1/0x4000000000000000 softirq=8144/8144 fqs=9
rcu: (detected by 1, t=10504 jiffies, g=8761, q=1228 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5242 Comm: syz-executor.3 Not tainted 6.9.0-rc4-next-20240418-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:get_current arch/x86/include/asm/current.h:49 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x70 kernel/kcov.c:206
Code: 8b 3d 4c f4 42 0c 48 89 de 5b e9 73 db 59 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0c 25 00 d5 03 00 65 8b 15 60 77 6d 7e f7 c2 00 01 ff 00
RSP: 0018:ffffc90000007d58 EFLAGS: 00000097
RAX: ffffffff8183d13e RBX: 0000000000000000 RCX: ffff8880200b8000
RDX: ffff8880200b8000 RSI: 0000000000000000 RDI: 0000000000000007
RBP: ffffc90000007ea8 R08: ffffffff8183d130 R09: 1ffffffff1f57be5
R10: dffffc0000000000 R11: fffffbfff1f57be6 R12: 1ffff1101728593b
R13: 0000000000000001 R14: ffff888022ff7340 R15: ffff8880200b8ac8
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f288c8dfde0 CR3: 000000000e132000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
cpu_max_bits_warn include/linux/cpumask.h:144 [inline]
cpumask_check include/linux/cpumask.h:151 [inline]
cpumask_test_cpu include/linux/cpumask.h:538 [inline]
cpu_online include/linux/cpumask.h:1148 [inline]
trace_hrtimer_expire_exit include/trace/events/timer.h:306 [inline]
__run_hrtimer kernel/time/hrtimer.c:1695 [inline]
__hrtimer_run_queues+0x5ee/0xd50 kernel/time/hrtimer.c:1756
hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1818
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
__sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x29/0x50 kernel/locking/spinlock.c:202
Code: 90 f3 0f 1e fa 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 5a de e1 f5 48 89 df e8 e2 20 e3 f5 e8 7d a9 0c f6 fb bf 01 00 00 00 b2 e3 d4 f5 65 8b 05 03 db 72 74 85 c0 74 06 5b c3 cc cc cc cc
RSP: 0018:ffffc90003d8f2b8 EFLAGS: 00000286
RAX: 9383db5c16cb1300 RBX: ffff88805d402b10 RCX: ffffffff817324ba
RDX: dffffc0000000000 RSI: ffffffff8bcab360 RDI: 0000000000000001
RBP: 1ffff1100ba80561 R08: ffffffff92f7b5b7 R09: 1ffffffff25ef6b6
R10: dffffc0000000000 R11: fffffbfff25ef6b7 R12: 0000000000000002
R13: ffffc90003d8f410 R14: ffffea0001709680 R15: ffff88805d402b08
spin_unlock_irq include/linux/spinlock.h:401 [inline]
filemap_remove_folio+0x111/0x2e0 mm/filemap.c:265
truncate_inode_folio+0x5d/0x70 mm/truncate.c:195
shmem_undo_range+0x45d/0x1df0 mm/shmem.c:1001
shmem_truncate_range mm/shmem.c:1114 [inline]
shmem_evict_inode+0x29b/0xa60 mm/shmem.c:1242
evict+0x2a8/0x630 fs/inode.c:667
__dentry_kill+0x20d/0x630 fs/dcache.c:603
dput+0x19f/0x2b0 fs/dcache.c:845
__fput+0x68c/0x8b0 fs/file_table.c:430
task_work_run+0x24f/0x310 kernel/task_work.c:180
exit_task_work include/linux/task_work.h:38 [inline]
do_exit+0xa1b/0x27e0 kernel/exit.c:877
do_group_exit+0x207/0x2c0 kernel/exit.c:1026
get_signal+0x16a1/0x1740 kernel/signal.c:2911
arch_do_signal_or_restart+0x96/0x860 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+0xc9/0x370 kernel/entry/common.c:218
do_syscall_64+0x102/0x240 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fccd627dea9
Code: Unable to access opcode bytes at 0x7fccd627de7f.
RSP: 002b:00007ffee5d44568 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffff92 RBX: 0000000000000fd2 RCX: 00007fccd627dea9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fccd63abf8c
RBP: 00007fccd63abf8c R08: 7fffffffffffffff R09: 00007ffee5d44590
R10: 00007ffee5d446f0 R11: 0000000000000246 R12: 0000000000015d60
R13: 0000000000014d8e R14: 00007ffee5d44710 R15: 00007fccd6234cb0
rcu: rcu_preempt kthread starved for 8663 jiffies! g8761 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:25488 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a50 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/0x1370 kernel/rcu/tree.c:2030
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2232
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/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: 1 PID: 5310 Comm: syz-executor.1 Not tainted 6.9.0-rc4-next-20240418-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:csd_lock_wait kernel/smp.c:311 [inline]
RIP: 0010:smp_call_function_many_cond+0x1894/0x2a00 kernel/smp.c:855
Code: 45 8b 65 00 44 89 e6 83 e6 01 31 ff e8 d5 f0 0b 00 41 83 e4 01 49 bc 00 00 00 00 00 fc ff df 75 07 e8 80 ec 0b 00 eb 38 f3 90 <42> 0f b6 04 23 84 c0 75 11 41 f7 45 00 01 00 00 00 74 1e e8 64 ec
RSP: 0018:ffffc9000482f5e0 EFLAGS: 00000246
RAX: ffffffff818a712c RBX: 1ffff11017288c89 RCX: 0000000000040000
RDX: ffffc9000539a000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc9000482f7e0 R08: ffffffff818a70fb R09: 1ffffffff25ef6d4
R10: dffffc0000000000 R11: fffffbfff25ef6d5 R12: dffffc0000000000
R13: ffff8880b9446448 R14: ffff8880b953f900 R15: 0000000000000000
FS: 00007f288d59c6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200003c8 CR3: 000000007c138000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1023
invalidate_bdev+0x71/0xa0 block/bdev.c:94
btrfs_get_bdev_and_sb+0xfb/0x170 fs/btrfs/volumes.c:490
btrfs_open_one_device fs/btrfs/volumes.c:654 [inline]
open_fs_devices+0x2b4/0x1260 fs/btrfs/volumes.c:1193
btrfs_get_tree_super fs/btrfs/super.c:1818 [inline]
btrfs_get_tree+0x504/0x1920 fs/btrfs/super.c:2081
vfs_get_tree+0x90/0x2a0 fs/super.c:1780
fc_mount+0x1b/0xb0 fs/namespace.c:1125
btrfs_get_tree_subvol fs/btrfs/super.c:2044 [inline]
btrfs_get_tree+0x652/0x1920 fs/btrfs/super.c:2082
vfs_get_tree+0x90/0x2a0 fs/super.c:1780
do_new_mount+0x2be/0xb40 fs/namespace.c:3352
do_mount fs/namespace.c:3692 [inline]
__do_sys_mount fs/namespace.c:3898 [inline]
__se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3875
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f288c87f5aa
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007f288d59bef8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f288d59bf80 RCX: 00007f288c87f5aa
RDX: 0000000020005100 RSI: 0000000020005140 RDI: 00007f288d59bf40
RBP: 0000000020005100 R08: 00007f288d59bf80 R09: 0000000000000016
R10: 0000000000000016 R11: 0000000000000202 R12: 0000000020005140
R13: 00007f288d59bf40 R14: 0000000000005124 R15: 0000000020000080