rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-...!: (1 GPs behind) idle=3c7c/1/0x4000000000000000 softirq=130974/130975 fqs=2
rcu: (detected by 0, t=10506 jiffies, g=226889, q=145 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 28312 Comm: syz-executor.4 Not tainted 6.9.0-rc7-syzkaller-00012-gdccb07f2914c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:lockdep_recursion_finish kernel/locking/lockdep.c:467 [inline]
RIP: 0010:lock_is_held_type+0xe4/0x150 kernel/locking/lockdep.c:5826
Code: 01 00 00 00 74 13 31 c0 f6 43 22 03 0f 95 c0 45 31 ed 44 39 f0 41 0f 94 c5 48 c7 c7 00 b1 0c 8b e8 91 16 00 00 b8 ff ff ff ff <65> 0f c1 05 ac dc 26 75 83 f8 01 75 2d 9c 58 f6 c4 02 75 43 48 f7
RSP: 0018:ffffc90000a08d40 EFLAGS: 00000092
RAX: 00000000ffffffff RBX: ffff888021a864d8 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8b0cb100 RDI: ffffffff8b6f57a0
RBP: ffff88801fabd300 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffff888021a85a00
R13: 0000000000000001 R14: 00000000ffffffff R15: 0000000000000000
FS: 00007f2c6e5076c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2c6e507d58 CR3: 0000000060682000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_is_held include/linux/lockdep.h:231 [inline]
advance_sched+0x790/0xc60 net/sched/sch_taprio.c:927
__run_hrtimer kernel/time/hrtimer.c:1692 [inline]
__hrtimer_run_queues+0x20c/0xcc0 kernel/time/hrtimer.c:1756
hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1818
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
__sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:futex_wake+0x17c/0x4e0 kernel/futex/waitwake.c:176
Code: da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 0f b6 14 02 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 d1 02 00 00 8b 2b <31> ff 89 ee e8 5b 6d 0c 00 85 ed 75 56 e8 72 72 0c 00 48 8b 54 24
RSP: 0018:ffffc9000393fc98 EFLAGS: 00000246
RAX: 0000000000000003 RBX: ffffc90000a32200 RCX: ffffffff81815a40
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffc90000a32200
RBP: 0000000000000002 R08: 0000000000000000 R09: fffff52000146440
R10: ffffc90000a32203 R11: 0000000000000000 R12: 1ffff92000727fb5
R13: 0000000000000000 R14: 00000000ffffffff R15: 0000000000000000
do_futex+0x1e5/0x350 kernel/futex/syscalls.c:107
__do_sys_futex kernel/futex/syscalls.c:179 [inline]
__se_sys_futex kernel/futex/syscalls.c:160 [inline]
__x64_sys_futex+0x1e1/0x4c0 kernel/futex/syscalls.c:160
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2c6d87dca9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007f2c6e507178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f2c6d9ac058 RCX: 00007f2c6d87dca9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f2c6d9ac05c
RBP: 00007f2c6d9ac050 R08: 0000000000000001 R09: 00007f2c6e5076c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2c6d9ac05c
R13: 000000000000006e R14: 00007ffe95b2ac90 R15: 00007ffe95b2ad78
rcu: rcu_preempt kthread starved for 10495 jiffies! g226889 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:27568 pid:16 tgid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6838
schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2582
rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:1663
rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:1862
kthread+0x2c1/0x3a0 kernel/kthread.c:388
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: 28266 Comm: syz-executor.3 Not tainted 6.9.0-rc7-syzkaller-00012-gdccb07f2914c #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+0x4e7/0x1420 kernel/smp.c:855
Code: 0c 00 85 ed 74 4d 48 b8 00 00 00 00 00 fc ff df 4d 89 f4 4c 89 f5 49 c1 ec 03 83 e5 07 49 01 c4 83 c5 03 e8 5b 07 0c 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 f7 0c 00 00 8b 43 08 31
RSP: 0018:ffffc9000388ef48 EFLAGS: 00000246
RAX: 0000000000040000 RBX: ffff8880b9544700 RCX: ffffc90004861000
RDX: 0000000000040000 RSI: ffffffff8181c595 RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffed10172a88e1
R13: 0000000000000001 R14: ffff8880b9544708 R15: ffff8880b943fc00
FS: 00007f46d80696c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8724778198 CR3: 000000002df7c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1023
on_each_cpu include/linux/smp.h:71 [inline]
flush_tlb_kernel_range+0x82/0xb0 arch/x86/mm/tlb.c:1076
pmd_free_pte_page+0xa6/0xe0 arch/x86/mm/pgtable.c:867
vmap_try_huge_pmd mm/vmalloc.c:145 [inline]
vmap_pmd_range mm/vmalloc.c:164 [inline]
vmap_pud_range mm/vmalloc.c:220 [inline]
vmap_p4d_range mm/vmalloc.c:271 [inline]
vmap_range_noflush+0x587/0xbc0 mm/vmalloc.c:295
__vmap_pages_range_noflush+0x166/0x1d0 mm/vmalloc.c:613
vmap_pages_range_noflush mm/vmalloc.c:633 [inline]
vmap_pages_range mm/vmalloc.c:653 [inline]
__vmalloc_area_node mm/vmalloc.c:3680 [inline]
__vmalloc_node_range+0x8f7/0x14b0 mm/vmalloc.c:3818
kvmalloc_node+0x14f/0x1a0 mm/util.c:659
kvmalloc include/linux/slab.h:766 [inline]
kvmalloc_array include/linux/slab.h:784 [inline]
__bch2_darray_resize+0xd8/0x250 fs/bcachefs/darray.c:12
__darray_resize fs/bcachefs/darray.h:31 [inline]
__darray_make_room fs/bcachefs/darray.h:43 [inline]
bch2_fs_btree_write_buffer_init+0x2a2/0x380 fs/bcachefs/btree_write_buffer.c:667
bch2_fs_alloc+0x1b26/0x2670 fs/bcachefs/super.c:928
bch2_fs_open+0x7b5/0x1110 fs/bcachefs/super.c:2081
bch2_mount+0xdcc/0x1130 fs/bcachefs/fs.c:1903
legacy_get_tree+0x109/0x220 fs/fs_context.c:662
vfs_get_tree+0x8f/0x380 fs/super.c:1779
do_new_mount fs/namespace.c:3352 [inline]
path_mount+0x14e6/0x1f20 fs/namespace.c:3679
do_mount fs/namespace.c:3692 [inline]
__do_sys_mount fs/namespace.c:3898 [inline]
__se_sys_mount fs/namespace.c:3875 [inline]
__x64_sys_mount+0x297/0x320 fs/namespace.c:3875
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f46d727f3aa
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:00007f46d8068ef8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f46d8068f80 RCX: 00007f46d727f3aa
RDX: 0000000020011880 RSI: 00000000200118c0 RDI: 00007f46d8068f40
RBP: 0000000020011880 R08: 00007f46d8068f80 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 00000000200118c0
R13: 00007f46d8068f40 R14: 0000000000011876 R15: 0000000020011900