rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P18100/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=83789, q=623 ncpus=2)
task:syz-executor state:R running task stack:21240 pid:18100 tgid:18100 ppid:18086 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x1850/0x4c30 kernel/sched/core.c:6756
preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6935
preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6959
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
__raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
_raw_spin_unlock+0x3e/0x50 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:391 [inline]
copy_pte_range mm/memory.c:1200 [inline]
copy_pmd_range+0x6dc8/0x77a0 mm/memory.c:1261
copy_pud_range mm/memory.c:1298 [inline]
copy_p4d_range mm/memory.c:1322 [inline]
copy_page_range+0x99f/0xe90 mm/memory.c:1420
dup_mmap kernel/fork.c:751 [inline]
dup_mm kernel/fork.c:1695 [inline]
copy_mm+0x11c7/0x1f90 kernel/fork.c:1744
copy_process+0x1845/0x3d50 kernel/fork.c:2395
kernel_clone+0x226/0x8e0 kernel/fork.c:2807
__do_sys_clone kernel/fork.c:2950 [inline]
__se_sys_clone kernel/fork.c:2934 [inline]
__x64_sys_clone+0x258/0x2a0 kernel/fork.c:2934
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f64fad76793
RSP: 002b:00007ffd01292e78 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f64fad76793
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 000055555dad57d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00000000000f414e R14: 00000000000f3d27 R15: 00007ffd01293000
rcu: rcu_preempt kthread timer wakeup didn't happen for 10499 jiffies! g83789 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=1 timer-softirq=68580
rcu: rcu_preempt kthread starved for 10500 jiffies! g83789 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:26032 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x1850/0x4c30 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/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:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 20881 Comm: syz.2.3260 Not tainted 6.13.0-rc2-syzkaller-00018-g7cb1b4663150 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:154 [inline]
RIP: 0010:lock_acquire+0x251/0x550 kernel/locking/lockdep.c:5852
Code: 8b 00 48 c7 44 24 60 00 00 00 00 9c 8f 44 24 60 42 80 3c 2b 00 74 08 4c 89 f7 e8 ba 22 8b 00 f6 44 24 61 02 0f 85 85 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
RSP: 0018:ffffc90000a18a20 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 1ffff92000143150 RCX: ffff88801c330ad8
RDX: dffffc0000000000 RSI: ffffffff8c0aa960 RDI: ffffffff8c5f9680
RBP: ffffc90000a18b68 R08: ffffffff942a1887 R09: 1ffffffff2854310
R10: dffffc0000000000 R11: fffffbfff2854311 R12: 1ffff9200014314c
R13: dffffc0000000000 R14: ffffc90000a18a80 R15: 0000000000000046
FS: 00007f2cecd186c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe23e830897 CR3: 000000006ab0a000 CR4: 0000000000350ef0
Call Trace:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
debug_object_deactivate+0x158/0x390 lib/debugobjects.c:873
debug_hrtimer_deactivate kernel/time/hrtimer.c:433 [inline]
debug_deactivate+0x1b/0x220 kernel/time/hrtimer.c:475
__run_hrtimer kernel/time/hrtimer.c:1707 [inline]
__hrtimer_run_queues+0x305/0xd30 kernel/time/hrtimer.c:1803
hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1865
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
__sysvec_apic_timer_interrupt+0x112/0x420 arch/x86/kernel/apic/apic.c:1055
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:unwind_next_frame+0x4ca/0x22d0 arch/x86/kernel/unwind_orc.c:512
Code: 85 8a 16 00 00 41 0f b7 1f c1 eb 0b 80 e3 01 48 8b 44 24 28 42 0f b6 04 20 84 c0 4c 8b 74 24 78 0f 85 8d 16 00 00 48 8b 04 24 <88> 18 41 0f b7 1f 83 e3 0f 83 fb 05 0f 8f 89 00 00 00 83 fb 03 0f
RSP: 0018:ffffc90004c9ed30 EFLAGS: 00000246
RAX: ffffc90004c9ee35 RBX: 0000000000000000 RCX: ffffffff9034a13c
RDX: ffffffff90af5aac RSI: ffffffff90af5a94 RDI: ffffffff814b9930
RBP: ffffc90004c9ee50 R08: 000000000000000a R09: ffffc90004c9eef0
R10: dffffc0000000000 R11: ffffffff818b2450 R12: dffffc0000000000
R13: ffffc90004c9ee00 R14: ffffc90004c9ee38 R15: ffffffff90af5ab0
arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:582
poison_slab_object mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x59/0x70 mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:233 [inline]
slab_free_hook mm/slub.c:2338 [inline]
slab_free mm/slub.c:4598 [inline]
kmem_cache_free+0x195/0x410 mm/slub.c:4700
free_buffer_head+0x54/0x240 fs/buffer.c:3031
try_to_free_buffers+0x2fa/0x3b0 fs/buffer.c:2972
block_invalidate_folio+0x649/0x790 fs/buffer.c:1644
folio_invalidate mm/truncate.c:126 [inline]
truncate_cleanup_folio+0x205/0x300 mm/truncate.c:146
truncate_inode_pages_range+0x2e5/0x10e0 mm/truncate.c:326
inode_go_inval+0xfa/0x2c0 fs/gfs2/glops.c:367
gfs2_make_fs_rw+0x148/0x5e0 fs/gfs2/super.c:140
gfs2_fill_super+0x22a1/0x24d0 fs/gfs2/ops_fstype.c:1274
get_tree_bdev_flags+0x48e/0x5c0 fs/super.c:1636
gfs2_get_tree+0x54/0x220 fs/gfs2/ops_fstype.c:1330
vfs_get_tree+0x92/0x2b0 fs/super.c:1814
do_new_mount+0x2be/0xb40 fs/namespace.c:3507
do_mount fs/namespace.c:3847 [inline]
__do_sys_mount fs/namespace.c:4057 [inline]
__se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4034
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2cebf816ba
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2cecd17e88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f2cecd17f10 RCX: 00007f2cebf816ba
RDX: 0000000020037f40 RSI: 0000000020037f80 RDI: 00007f2cecd17ed0
RBP: 0000000020037f40 R08: 00007f2cecd17f10 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020037f80
R13: 00007f2cecd17ed0 R14: 0000000000037f64 R15: 00000000200000c0