rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-...!: (1 GPs behind) idle=771c/1/0x4000000000000000 softirq=44474/44476 fqs=3
rcu: (detected by 0, t=10502 jiffies, g=50569, q=308 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 11887 Comm: syz-executor.0 Not tainted 6.9.0-syzkaller-08544-g4b377b4868ef #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:116 [inline]
RIP: 0010:lock_release+0xe8/0x9f0 kernel/locking/lockdep.c:5767
Code: 00 84 c0 75 0d 80 3d cd 9d 24 0e 00 0f 84 d4 05 00 00 48 c7 c0 3c ef ac 8f 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 f7 05 00 00 <83> 3d 7d 50 3a 0e 00 0f 84 32 05 00 00 65 8b 05 b4 eb 8f 7e 85 c0
RSP: 0018:ffffc90000a18a20 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff81729e80
RDX: 0000000000000000 RSI: ffffffff8c1fae00 RDI: ffffffff8c1fadc0
RBP: ffffc90000a18b50 R08: ffffffff8facbbef R09: 1ffffffff1f5977d
R10: dffffc0000000000 R11: fffffbfff1f5977e R12: 1ffff92000143150
R13: ffffffff84b7c624 R14: ffffc90000a18b80 R15: dffffc0000000000
FS: 00007f43d7d386c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30d2e000 CR3: 0000000066096000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline]
_raw_spin_unlock_irqrestore+0x79/0x140 kernel/locking/spinlock.c:194
debug_object_activate+0x3e4/0x510 lib/debugobjects.c:726
debug_hrtimer_activate kernel/time/hrtimer.c:423 [inline]
debug_activate kernel/time/hrtimer.c:478 [inline]
enqueue_hrtimer+0x30/0x3c0 kernel/time/hrtimer.c:1085
__run_hrtimer kernel/time/hrtimer.c:1704 [inline]
__hrtimer_run_queues+0x6d5/0xd50 kernel/time/hrtimer.c:1751
hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1813
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_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 8e 97 68 f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 83 cc d2 f5 65 8b 05 f4 f9 70 74 85 c0 74 43 48 c7 04 24 0e 36
RSP: 0018:ffffc9000388eb40 EFLAGS: 00000206
RAX: 00ad2ac65a871a00 RBX: 1ffff92000711d6c RCX: ffffffff8172ea4a
RDX: dffffc0000000000 RSI: ffffffff8bcab5c0 RDI: 0000000000000001
RBP: ffffc9000388ebd0 R08: ffffffff92f9c6cf R09: 1ffffffff25f38d9
R10: dffffc0000000000 R11: fffffbfff25f38da R12: dffffc0000000000
R13: 1ffff92000711d68 R14: ffffc9000388eb60 R15: 0000000000000246
spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
taprio_change+0x339b/0x42d0 net/sched/sch_taprio.c:1971
taprio_init+0x9da/0xc80 net/sched/sch_taprio.c:2112
qdisc_create+0x9d4/0x11a0 net/sched/sch_api.c:1355
tc_modify_qdisc+0xa26/0x1e40 net/sched/sch_api.c:1777
rtnetlink_rcv_msg+0x89b/0x10d0 net/core/rtnetlink.c:6595
netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2564
netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]
netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1361
netlink_sendmsg+0x8e1/0xcb0 net/netlink/af_netlink.c:1905
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x221/0x270 net/socket.c:745
____sys_sendmsg+0x525/0x7d0 net/socket.c:2584
___sys_sendmsg net/socket.c:2638 [inline]
__sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667
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: 0033:0x7f43d707cee9
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:00007f43d7d380c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f43d71abf80 RCX: 00007f43d707cee9
RDX: 0000000000000000 RSI: 0000000020000000 RDI: 000000000000000c
RBP: 00007f43d70c949e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000004d R14: 00007f43d71abf80 R15: 00007ffd95aebad8
rcu: rcu_preempt kthread starved for 10496 jiffies! g50569 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:25296 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:2000
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2202
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: 0 PID: 11890 Comm: syz-executor.0 Not tainted 6.9.0-syzkaller-08544-g4b377b4868ef #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:check_kcov_mode kernel/kcov.c:184 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x37/0x70 kernel/kcov.c:207
Code: 80 d3 03 00 65 8b 15 a0 a1 6d 7e f7 c2 00 01 ff 00 74 11 f7 c2 00 01 00 00 74 35 83 b9 1c 16 00 00 00 74 2c 8b 91 f8 15 00 00 <83> fa 02 75 21 48 8b 91 00 16 00 00 48 8b 32 48 8d 7e 01 8b 89 fc
RSP: 0018:ffffc900045f7298 EFLAGS: 00000246
RAX: ffffffff818a299c RBX: 1ffff110172a8879 RCX: ffff88806c10bc00
RDX: 0000000000000002 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc900045f74a0 R08: ffffffff818a296b R09: 1ffffffff25f38b6
R10: dffffc0000000000 R11: fffffbfff25f38b7 R12: dffffc0000000000
R13: ffff8880b95443c8 R14: ffff8880b943f780 R15: 0000000000000001
FS: 00007f43d7d176c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f43d7d17d58 CR3: 0000000066096000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
csd_lock_wait kernel/smp.c:311 [inline]
smp_call_function_many_cond+0x18ac/0x2a00 kernel/smp.c:855
on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1023
__flush_tlb_multi arch/x86/include/asm/paravirt.h:91 [inline]
flush_tlb_multi arch/x86/mm/tlb.c:941 [inline]
flush_tlb_mm_range+0x330/0x5c0 arch/x86/mm/tlb.c:1027
tlb_flush arch/x86/include/asm/tlb.h:20 [inline]
tlb_flush_mmu_tlbonly include/asm-generic/tlb.h:465 [inline]
tlb_flush_mmu+0x1aa/0x680 mm/mmu_gather.c:372
tlb_finish_mmu+0xd4/0x200 mm/mmu_gather.c:465
unmap_region+0x2df/0x350 mm/mmap.c:2317
do_vmi_align_munmap+0x11bf/0x1930 mm/mmap.c:2630
do_vmi_munmap+0x24e/0x2d0 mm/mmap.c:2698
mmap_region+0x85b/0x1ef0 mm/mmap.c:2749
do_mmap+0x7b0/0xe70 mm/mmap.c:1387
vm_mmap_pgoff+0x1e3/0x420 mm/util.c:573
ksys_mmap_pgoff+0x4f1/0x720 mm/mmap.c:1433
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: 0033:0x7f43d707cee9
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:00007f43d7d170c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f43d71ac050 RCX: 00007f43d707cee9
RDX: 0000000000000001 RSI: 0000000000003000 RDI: 0000000020000000
RBP: 00007f43d70c949e R08: 0000000000000003 R09: 0000000000000000
R10: 0000000000000012 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f43d71ac050 R15: 00007ffd95aebad8