rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-...!: (1 GPs behind) idle=725/1/0x4000000000000000 softirq=184603/184606 fqs=0
(detected by 0, t=10506 jiffies, g=274073, q=78 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 26402 Comm: syz-executor.0 Not tainted 5.19.0-rc2-syzkaller-00060-g30306f6194ca #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__lock_acquire+0x47f/0x1f80 kernel/locking/lockdep.c:5001
Code: 4d 89 fd 45 89 37 4c 8b 7c 24 08 48 8b 44 24 50 49 8d 9c c7 84 0a 00 00 48 89 d8 48 c1 e8 03 8a 04 10 84 c0 0f 85 36 13 00 00 <89> 2b 44 89 e3 41 c1 ec 06 4a 8d 3c e5 00 80 d4 8f be 08 00 00 00
RSP: 0018:ffffc900001f0a48 EFLAGS: 00000046
RAX: 1ffff1100aa5a100 RBX: ffff8880552d0a84 RCX: 0000000000080000
RDX: dffffc0000000000 RSI: 000000000000405c RDI: ffff8880b9b2a458
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: fffffbfff1c0709e R11: 1ffffffff1c0709d R12: 000000000000005c
R13: ffff8880552d0a80 R14: 00000000000c405c R15: ffff8880552d0000
FS: 000055555650c400(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f69b319d090 CR3: 0000000047d79000 CR4: 00000000003506e0
Call Trace:
lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5665
__raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline]
_raw_spin_lock_irq+0xcf/0x110 kernel/locking/spinlock.c:170
__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
__hrtimer_run_queues+0x546/0xa60 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x3a6/0xfd0 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
__sysvec_apic_timer_interrupt+0xf9/0x280 arch/x86/kernel/apic/apic.c:1112
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x1b/0x20
RIP: 0010:__syscall_enter_from_user_work kernel/entry/common.c:89 [inline]
RIP: 0010:syscall_enter_from_user_mode+0x38/0x1a0 kernel/entry/common.c:110
Code: 89 fe 48 8b 7c 24 30 e8 46 f6 ff ff e9 49 01 00 00 e9 4d 01 00 00 e8 07 50 63 f7 e8 d2 4e 63 f7 fb 65 4c 8b 3c 25 00 6f 02 00 <49> 8b 5f 08 f6 c3 3f 0f 84 b4 00 00 00 f6 c3 20 74 17 4c 89 f7 e8
RSP: 0018:ffffc90006c7ff10 EFLAGS: 00000282
RAX: 06c91713e7199800 RBX: ffffc90006c7ff58 RCX: ffffffff9153fe03
RDX: dffffc0000000000 RSI: ffffffff8a8d22c0 RDI: ffffffff8ae98c60
RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff1c0709e
R10: fffffbfff1c0709e R11: 1ffffffff1c0709d R12: 0000000000000000
R13: 0000000000000003 R14: ffffc90006c7ff58 R15: ffff8880552d0000
do_syscall_64+0xc/0x70 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7f69b303bd4b
Code: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44
RSP: 002b:00007ffdbb438b60 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 000000000000001b RCX: 00007f69b303bd4b
RDX: ffffffffffffffb8 RSI: ffffffffffffffff RDI: 000000000000001a
RBP: 0000000000000000 R08: 0000000000000000 R09: 00007f69b31a01f0
R10: 00007ffdbb438a80 R11: 0000000000000293 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffdbb438c40
rcu: rcu_preempt kthread starved for 10506 jiffies! g274073 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:26424 pid: 17 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5116 [inline]
__schedule+0x957/0xec0 kernel/sched/core.c:6428
schedule+0xeb/0x1b0 kernel/sched/core.c:6500
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1935
rcu_gp_fqs_loop+0x2b9/0xfb0 kernel/rcu/tree.c:1999
rcu_gp_kthread+0xa5/0x360 kernel/rcu/tree.c:2187
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
rcu: Stack dump where RCU GP kthread last ran:
NMI backtrace for cpu 0
CPU: 0 PID: 17724 Comm: kworker/0:45 Not tainted 5.19.0-rc2-syzkaller-00060-g30306f6194ca #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events bpf_map_free_deferred
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x473/0x4a0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x168/0x280 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
rcu_check_gp_kthread_starvation+0x1da/0x250 kernel/rcu/tree_stall.h:518
print_other_cpu_stall+0x140a/0x1560 kernel/rcu/tree_stall.h:623
check_cpu_stall kernel/rcu/tree_stall.h:771 [inline]
rcu_pending kernel/rcu/tree.c:3977 [inline]
rcu_sched_clock_irq+0x9c4/0x19f0 kernel/rcu/tree.c:2675
update_process_times+0x148/0x1b0 kernel/time/timer.c:1839
tick_sched_handle kernel/time/tick-sched.c:243 [inline]
tick_sched_timer+0x377/0x540 kernel/time/tick-sched.c:1481
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x4cb/0xa60 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x3a6/0xfd0 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
__sysvec_apic_timer_interrupt+0xf9/0x280 arch/x86/kernel/apic/apic.c:1112
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x1b/0x20
RIP: 0010:csd_lock_wait kernel/smp.c:414 [inline]
RIP: 0010:smp_call_function_single+0x407/0x760 kernel/smp.c:777
Code: 85 4c 01 00 00 45 8b 26 44 89 e6 83 e6 01 31 ff e8 9e fe 0a 00 41 83 e4 01 75 08 e8 73 fa 0a 00 eb 3f 90 f3 90 42 0f b6 04 2b <84> c0 75 10 41 f7 06 01 00 00 00 74 25 e8 57 fa 0a 00 eb e5 44 89
RSP: 0018:ffffc900150879e0 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 1ffff92002a10f45 RCX: ffff88804e525880
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90015087b28 R08: ffffffff817cac12 R09: fffffbfff1fa9015
R10: fffffbfff1fa9015 R11: 1ffffffff1fa9014 R12: 0000000000000001
R13: dffffc0000000000 R14: ffffc90015087a28 R15: 0000000000000000
rcu_barrier+0x2e3/0x620 kernel/rcu/tree.c:4157
htab_map_free+0x25/0xb90 kernel/bpf/hashtab.c:1485
process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
watchdog: BUG: soft lockup - CPU#0 stuck for 246s! [kworker/0:45:17724]
Modules linked in:
irq event stamp: 2033920
hardirqs last enabled at (2033919): [] asm_sysvec_apic_timer_interrupt+0x1b/0x20
hardirqs last disabled at (2033920): [] sysvec_apic_timer_interrupt+0xa/0xb0 arch/x86/kernel/apic/apic.c:1106
softirqs last enabled at (1983454): [] __irq_exit_rcu+0xec/0x170 kernel/softirq.c:650
softirqs last disabled at (1983433): [] __irq_exit_rcu+0xec/0x170 kernel/softirq.c:650
CPU: 0 PID: 17724 Comm: kworker/0:45 Not tainted 5.19.0-rc2-syzkaller-00060-g30306f6194ca #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events bpf_map_free_deferred
RIP: 0010:csd_lock_wait kernel/smp.c:414 [inline]
RIP: 0010:smp_call_function_single+0x402/0x760 kernel/smp.c:777
Code: 04 2b 84 c0 0f 85 4c 01 00 00 45 8b 26 44 89 e6 83 e6 01 31 ff e8 9e fe 0a 00 41 83 e4 01 75 08 e8 73 fa 0a 00 eb 3f 90 f3 90 <42> 0f b6 04 2b 84 c0 75 10 41 f7 06 01 00 00 00 74 25 e8 57 fa 0a
RSP: 0018:ffffc900150879e0 EFLAGS: 00000293
RAX: ffffffff817cac39 RBX: 1ffff92002a10f45 RCX: ffff88804e525880
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90015087b28 R08: ffffffff817cac12 R09: fffffbfff1fa9015
R10: fffffbfff1fa9015 R11: 1ffffffff1fa9014 R12: 0000000000000001
R13: dffffc0000000000 R14: ffffc90015087a28 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fba73ad53a5 CR3: 000000005a8ca000 CR4: 00000000003506f0
Call Trace:
rcu_barrier+0x2e3/0x620 kernel/rcu/tree.c:4157
htab_map_free+0x25/0xb90 kernel/bpf/hashtab.c:1485
process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 26402 Comm: syz-executor.0 Not tainted 5.19.0-rc2-syzkaller-00060-g30306f6194ca #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:lock_is_held_type+0x12f/0x190 kernel/locking/lockdep.c:5710
Code: e8 06 0f 00 00 b8 ff ff ff ff 65 0f c1 05 39 7c d7 75 83 f8 01 75 40 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 <75> 46 41 f7 c4 00 02 00 00 74 01 fb 65 48 8b 04 25 28 00 00 00 48
RSP: 0018:ffffc900001f09f8 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 1ffff9200003e148 RCX: 0000000000010002
RDX: 0000000000000000 RSI: ffffffff8a8d3440 RDI: ffffffff8ae98c60
RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff1c0709e
R10: fffffbfff1c0709e R11: 1ffffffff1c0709d R12: 0000000000000046
R13: ffff8880552d0000 R14: 00000000ffffffff R15: ffffffff8cb1ec20
FS: 000055555650c400(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f69b319d090 CR3: 0000000047d79000 CR4: 00000000003506e0
Call Trace:
lock_is_held include/linux/lockdep.h:279 [inline]
rcu_read_lock_sched_held+0x89/0x130 kernel/rcu/update.c:125
trace_lock_acquire+0x7d/0x1d0 include/trace/events/lock.h:24
lock_acquire+0xa5/0x400 kernel/locking/lockdep.c:5636
__raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline]
_raw_spin_lock_irq+0xcf/0x110 kernel/locking/spinlock.c:170
__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
__hrtimer_run_queues+0x546/0xa60 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x3a6/0xfd0 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
__sysvec_apic_timer_interrupt+0xf9/0x280 arch/x86/kernel/apic/apic.c:1112
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x1b/0x20
RIP: 0010:__syscall_enter_from_user_work kernel/entry/common.c:89 [inline]
RIP: 0010:syscall_enter_from_user_mode+0x38/0x1a0 kernel/entry/common.c:110
Code: 89 fe 48 8b 7c 24 30 e8 46 f6 ff ff e9 49 01 00 00 e9 4d 01 00 00 e8 07 50 63 f7 e8 d2 4e 63 f7 fb 65 4c 8b 3c 25 00 6f 02 00 <49> 8b 5f 08 f6 c3 3f 0f 84 b4 00 00 00 f6 c3 20 74 17 4c 89 f7 e8
RSP: 0018:ffffc90006c7ff10 EFLAGS: 00000282
RAX: 06c91713e7199800 RBX: ffffc90006c7ff58 RCX: ffffffff9153fe03
RDX: dffffc0000000000 RSI: ffffffff8a8d22c0 RDI: ffffffff8ae98c60
RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff1c0709e
R10: fffffbfff1c0709e R11: 1ffffffff1c0709d R12: 0000000000000000
R13: 0000000000000003 R14: ffffc90006c7ff58 R15: ffff8880552d0000
do_syscall_64+0xc/0x70 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7f69b303bd4b
Code: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44
RSP: 002b:00007ffdbb438b60 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 000000000000001b RCX: 00007f69b303bd4b
RDX: ffffffffffffffb8 RSI: ffffffffffffffff RDI: 000000000000001a
RBP: 0000000000000000 R08: 0000000000000000 R09: 00007f69b31a01f0
R10: 00007ffdbb438a80 R11: 0000000000000293 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffdbb438c40
----------------
Code disassembly (best guess):
0: 4d 89 fd mov %r15,%r13
3: 45 89 37 mov %r14d,(%r15)
6: 4c 8b 7c 24 08 mov 0x8(%rsp),%r15
b: 48 8b 44 24 50 mov 0x50(%rsp),%rax
10: 49 8d 9c c7 84 0a 00 lea 0xa84(%r15,%rax,8),%rbx
17: 00
18: 48 89 d8 mov %rbx,%rax
1b: 48 c1 e8 03 shr $0x3,%rax
1f: 8a 04 10 mov (%rax,%rdx,1),%al
22: 84 c0 test %al,%al
24: 0f 85 36 13 00 00 jne 0x1360
* 2a: 89 2b mov %ebp,(%rbx) <-- trapping instruction
2c: 44 89 e3 mov %r12d,%ebx
2f: 41 c1 ec 06 shr $0x6,%r12d
33: 4a 8d 3c e5 00 80 d4 lea -0x702b8000(,%r12,8),%rdi
3a: 8f
3b: be 08 00 00 00 mov $0x8,%esi