rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
(detected by 0, t=10502 jiffies, g=259449, q=27)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4295110725-4295100223), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g259449 f0x2 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:28800 pid: 14 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4339 [inline]
__schedule+0x916/0x23e0 kernel/sched/core.c:5147
schedule+0xcf/0x270 kernel/sched/core.c:5226
schedule_timeout+0x14a/0x250 kernel/time/timer.c:1892
rcu_gp_fqs_loop kernel/rcu/tree.c:2004 [inline]
rcu_gp_kthread+0xd07/0x2300 kernel/rcu/tree.c:2177
kthread+0x3b1/0x4a0 kernel/kthread.c:313
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
rcu: Stack dump where RCU GP kthread last ran:
NMI backtrace for cpu 0
CPU: 0 PID: 27987 Comm: syz-executor.0 Not tainted 5.13.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:79 [inline]
dump_stack+0x141/0x1d7 lib/dump_stack.c:120
nmi_cpu_backtrace.cold+0x44/0xd7 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
rcu_check_gp_kthread_starvation.cold+0x1cc/0x1d1 kernel/rcu/tree_stall.h:478
print_other_cpu_stall kernel/rcu/tree_stall.h:583 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:708 [inline]
rcu_pending kernel/rcu/tree.c:3911 [inline]
rcu_sched_clock_irq+0x1d46/0x2080 kernel/rcu/tree.c:2649
update_process_times+0x16d/0x200 kernel/time/timer.c:1796
tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:226
tick_sched_timer+0x1b0/0x2d0 kernel/time/tick-sched.c:1373
__run_hrtimer kernel/time/hrtimer.c:1537 [inline]
__hrtimer_run_queues+0x1c0/0xe40 kernel/time/hrtimer.c:1601
hrtimer_interrupt+0x330/0xa00 kernel/time/hrtimer.c:1663
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1089 [inline]
__sysvec_apic_timer_interrupt+0x146/0x540 arch/x86/kernel/apic/apic.c:1106
sysvec_apic_timer_interrupt+0x40/0xc0 arch/x86/kernel/apic/apic.c:1100
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647
RIP: 0010:lock_is_held_type+0xfd/0x140 kernel/locking/lockdep.c:5560
Code: 00 00 b8 ff ff ff ff 65 0f c1 05 fe 77 eb 76 83 f8 01 75 29 9c 58 f6 c4 02 75 3d 48 f7 04 24 00 02 00 00 74 01 fb 48 83 c4 08 <44> 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 45 31 ed eb b9 0f 0b 48
RSP: 0018:ffffc900000079f0 EFLAGS: 00000296
RAX: 0000000000000046 RBX: 0000000000000001 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000101 RDI: 0000000000000000
RBP: ffffffff8bf79320 R08: 0000000000000001 R09: 0000000000000000
R10: ffffffff88681295 R11: 0000000000000000 R12: ffff888023493880
R13: 0000000000000001 R14: 00000000ffffffff R15: ffff8880234942a0
__rhashtable_lookup+0x5b7/0x780 include/linux/rhashtable.h:594
rhltable_lookup include/linux/rhashtable.h:688 [inline]
sta_info_hash_lookup net/mac80211/sta_info.c:162 [inline]
sta_info_get_bss+0x144/0x3f0 net/mac80211/sta_info.c:199
__ieee80211_rx_handle_packet net/mac80211/rx.c:4776 [inline]
ieee80211_rx_list+0x910/0x2680 net/mac80211/rx.c:4901
ieee80211_rx_napi+0xf7/0x3d0 net/mac80211/rx.c:4924
ieee80211_rx include/net/mac80211.h:4528 [inline]
ieee80211_tasklet_handler+0xd4/0x130 net/mac80211/main.c:235
tasklet_action_common.constprop.0+0x201/0x2e0 kernel/softirq.c:784
__do_softirq+0x29b/0x9f6 kernel/softirq.c:559
invoke_softirq kernel/softirq.c:433 [inline]
__irq_exit_rcu+0x136/0x200 kernel/softirq.c:637
irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1100
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647
RIP: 0010:schedule_debug kernel/sched/core.c:4892 [inline]
RIP: 0010:__schedule+0x136/0x23e0 kernel/sched/core.c:5038
Code: 55 1c 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 7d 20 4c 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 28 1d 00 00 49 81 3f 9d 6e ac 57 <0f> 85 7f 22 00 00 49 8d 45 18 84 db 48 89 85 68 ff ff ff 75 28 48
RSP: 0018:ffffc9000204f660 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 1ffff92000409ed4
RDX: 1ffff92000409000 RSI: 0000000000000001 RDI: ffff8880234938a0
RBP: ffffc9000204f728 R08: 0000000000000001 R09: ffffffff90227997
R10: 0000000000000001 R11: 0000000000000001 R12: ffff8880b9c35640
R13: ffff888023493880 R14: 0000000000035640 R15: ffffc90002048000
preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:5535
irqentry_exit+0x31/0x80 kernel/entry/common.c:426
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647
RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:91 [inline]
RIP: 0010:lock_release+0x124/0x720 kernel/locking/lockdep.c:5525
Code: 85 e8 02 00 00 65 4c 8b 34 25 00 f0 01 00 49 8d be f4 09 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 14 02 <48> 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 64 05 00 00 45
RSP: 0018:ffffc9000204f800 EFLAGS: 00000a07
RAX: dffffc0000000000 RBX: ffffffff8dc9a4ac RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff888023494274
RBP: 1ffff92000409f02 R08: 0000000000000000 R09: ffffffff8dc97217
R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff8bf79320
R13: 0000000000000000 R14: ffff888023493880 R15: 0000000000000000
rcu_lock_release include/linux/rcupdate.h:272 [inline]
rcu_read_unlock include/linux/rcupdate.h:711 [inline]
is_bpf_text_address+0xcb/0x160 kernel/bpf/core.c:706
kernel_text_address kernel/extable.c:151 [inline]
kernel_text_address+0xbd/0xf0 kernel/extable.c:120
__kernel_text_address+0x9/0x30 kernel/extable.c:105
unwind_get_return_address arch/x86/kernel/unwind_orc.c:318 [inline]
unwind_get_return_address+0x51/0x90 arch/x86/kernel/unwind_orc.c:313
arch_stack_walk+0x93/0xe0 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121
kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:428 [inline]
____kasan_kmalloc mm/kasan/common.c:507 [inline]
____kasan_kmalloc mm/kasan/common.c:466 [inline]
__kasan_kmalloc+0x9b/0xd0 mm/kasan/common.c:516
kmalloc include/linux/slab.h:556 [inline]
kzalloc include/linux/slab.h:686 [inline]
tipc_group_create+0xb7/0x8d0 net/tipc/group.c:172
tipc_sk_join net/tipc/socket.c:3074 [inline]
tipc_setsockopt+0x470/0xe70 net/tipc/socket.c:3191
__sys_setsockopt+0x2db/0x610 net/socket.c:2104
__do_sys_setsockopt net/socket.c:2115 [inline]
__se_sys_setsockopt net/socket.c:2112 [inline]
__x64_sys_setsockopt+0xba/0x150 net/socket.c:2112
do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665d9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb6bc30b188 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9
RDX: 0000000000000087 RSI: 000000000000010f RDI: 0000000000000005
RBP: 00000000004bfcb9 R08: 00000000000004bd R09: 0000000000000000
R10: 0000000020000180 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007fff016f29cf R14: 00007fb6bc30b300 R15: 0000000000022000
================================
WARNING: inconsistent lock state
5.13.0-rc3-syzkaller #0 Not tainted
--------------------------------
inconsistent {IN-HARDIRQ-W} -> {HARDIRQ-ON-W} usage.
syz-executor.0/27987 [HC0[0]:SC1[1]:HE0:SE0] takes:
ffffffff8bf81f18 (rcu_node_0){?.-.}-{2:2}, at: print_other_cpu_stall kernel/rcu/tree_stall.h:542 [inline]
ffffffff8bf81f18 (rcu_node_0){?.-.}-{2:2}, at: check_cpu_stall kernel/rcu/tree_stall.h:708 [inline]
ffffffff8bf81f18 (rcu_node_0){?.-.}-{2:2}, at: rcu_pending kernel/rcu/tree.c:3911 [inline]
ffffffff8bf81f18 (rcu_node_0){?.-.}-{2:2}, at: rcu_sched_clock_irq+0xc63/0x2080 kernel/rcu/tree.c:2649
{IN-HARDIRQ-W} state was registered at:
lock_acquire kernel/locking/lockdep.c:5512 [inline]
lock_acquire+0x1ab/0x740 kernel/locking/lockdep.c:5477
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:159
rcu_exp_handler+0x1fc/0x440 kernel/rcu/tree_exp.h:679
flush_smp_call_function_queue+0x34b/0x640 kernel/smp.c:663
__sysvec_call_function_single+0x95/0x3d0 arch/x86/kernel/smp.c:248
sysvec_call_function_single+0x8e/0xc0 arch/x86/kernel/smp.c:243
asm_sysvec_call_function_single+0x12/0x20 arch/x86/include/asm/idtentry.h:655
lock_acquire+0x1ef/0x740 kernel/locking/lockdep.c:5480
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:151
spin_lock include/linux/spinlock.h:354 [inline]
lockref_get_not_dead+0x14/0x80 lib/lockref.c:211
__legitimize_path+0x7f/0x1c0 fs/namei.c:671
legitimize_path fs/namei.c:681 [inline]
try_to_unlazy+0x10a/0x3a0 fs/namei.c:750
lookup_fast+0x3ec/0x6d0 fs/namei.c:1554
walk_component+0xc6/0x6a0 fs/namei.c:1938
link_path_walk.part.0+0x712/0xc90 fs/namei.c:2269
link_path_walk fs/namei.c:2194 [inline]
path_openat+0x25a/0x27e0 fs/namei.c:3490
do_filp_open+0x190/0x3d0 fs/namei.c:3521
do_open_execat+0x116/0x690 fs/exec.c:913
bprm_execve fs/exec.c:1805 [inline]
bprm_execve+0x4be/0x19a0 fs/exec.c:1792
kernel_execve+0x370/0x460 fs/exec.c:1973
call_usermodehelper_exec_async+0x2e3/0x580 kernel/umh.c:112
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
irq event stamp: 10022735
hardirqs last enabled at (10022734): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647
hardirqs last disabled at (10022735): [] sysvec_apic_timer_interrupt+0xb/0xc0 arch/x86/kernel/apic/apic.c:1100
softirqs last enabled at (9937846): [] invoke_softirq kernel/softirq.c:433 [inline]
softirqs last enabled at (9937846): [] __irq_exit_rcu+0x136/0x200 kernel/softirq.c:637
softirqs last disabled at (9937849): [] invoke_softirq kernel/softirq.c:433 [inline]
softirqs last disabled at (9937849): [] __irq_exit_rcu+0x136/0x200 kernel/softirq.c:637
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(rcu_node_0);
lock(rcu_node_0);
*** DEADLOCK ***
5 locks held by syz-executor.0/27987:
#0: ffff888028bfbba0 (sk_lock-AF_TIPC){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1610 [inline]
#0: ffff888028bfbba0 (sk_lock-AF_TIPC){+.+.}-{0:0}, at: tipc_setsockopt+0x351/0xe70 net/tipc/socket.c:3164
#1: ffffffff8bf79320 (rcu_read_lock){....}-{1:2}, at: is_bpf_text_address+0x0/0x160 kernel/bpf/core.c:691
#2: ffffffff8bf79320 (rcu_read_lock){....}-{1:2}, at: ieee80211_rx_napi+0x0/0x3d0 arch/x86/include/asm/bitops.h:207
#3: ffffffff8bf79320 (rcu_read_lock){....}-{1:2}, at: sta_info_get_bss+0x81/0x3f0 net/mac80211/sta_info.c:194
#4: ffffffff8bf81f18 (rcu_node_0){?.-.}-{2:2}, at: print_other_cpu_stall kernel/rcu/tree_stall.h:542 [inline]
#4: ffffffff8bf81f18 (rcu_node_0){?.-.}-{2:2}, at: check_cpu_stall kernel/rcu/tree_stall.h:708 [inline]
#4: ffffffff8bf81f18 (rcu_node_0){?.-.}-{2:2}, at: rcu_pending kernel/rcu/tree.c:3911 [inline]
#4: ffffffff8bf81f18 (rcu_node_0){?.-.}-{2:2}, at: rcu_sched_clock_irq+0xc63/0x2080 kernel/rcu/tree.c:2649
stack backtrace:
CPU: 0 PID: 27987 Comm: syz-executor.0 Not tainted 5.13.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:79 [inline]
dump_stack+0x141/0x1d7 lib/dump_stack.c:120
print_usage_bug kernel/locking/lockdep.c:203 [inline]
valid_state kernel/locking/lockdep.c:3820 [inline]
mark_lock_irq kernel/locking/lockdep.c:4023 [inline]
mark_lock.cold+0x61/0x8e kernel/locking/lockdep.c:4480
mark_held_locks+0x9f/0xe0 kernel/locking/lockdep.c:4081
__trace_hardirqs_on_caller kernel/locking/lockdep.c:4099 [inline]
lockdep_hardirqs_on_prepare kernel/locking/lockdep.c:4167 [inline]
lockdep_hardirqs_on_prepare+0x135/0x400 kernel/locking/lockdep.c:4119
trace_hardirqs_on+0x5b/0x1c0 kernel/trace/trace_preemptirq.c:49
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647
RIP: 0010:lock_is_held_type+0xfd/0x140 kernel/locking/lockdep.c:5560
Code: 00 00 b8 ff ff ff ff 65 0f c1 05 fe 77 eb 76 83 f8 01 75 29 9c 58 f6 c4 02 75 3d 48 f7 04 24 00 02 00 00 74 01 fb 48 83 c4 08 <44> 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 45 31 ed eb b9 0f 0b 48
RSP: 0018:ffffc900000079f0 EFLAGS: 00000296
RAX: 0000000000000046 RBX: 0000000000000001 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000101 RDI: 0000000000000000
RBP: ffffffff8bf79320 R08: 0000000000000001 R09: 0000000000000000
R10: ffffffff88681295 R11: 0000000000000000 R12: ffff888023493880
R13: 0000000000000001 R14: 00000000ffffffff R15: ffff8880234942a0
__rhashtable_lookup+0x5b7/0x780 include/linux/rhashtable.h:594
rhltable_lookup include/linux/rhashtable.h:688 [inline]
sta_info_hash_lookup net/mac80211/sta_info.c:162 [inline]
sta_info_get_bss+0x144/0x3f0 net/mac80211/sta_info.c:199
__ieee80211_rx_handle_packet net/mac80211/rx.c:4776 [inline]
ieee80211_rx_list+0x910/0x2680 net/mac80211/rx.c:4901
ieee80211_rx_napi+0xf7/0x3d0 net/mac80211/rx.c:4924
ieee80211_rx include/net/mac80211.h:4528 [inline]
ieee80211_tasklet_handler+0xd4/0x130 net/mac80211/main.c:235
tasklet_action_common.constprop.0+0x201/0x2e0 kernel/softirq.c:784
__do_softirq+0x29b/0x9f6 kernel/softirq.c:559
invoke_softirq kernel/softirq.c:433 [inline]
__irq_exit_rcu+0x136/0x200 kernel/softirq.c:637
irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1100
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647
RIP: 0010:schedule_debug kernel/sched/core.c:4892 [inline]
RIP: 0010:__schedule+0x136/0x23e0 kernel/sched/core.c:5038
Code: 55 1c 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 7d 20 4c 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 28 1d 00 00 49 81 3f 9d 6e ac 57 <0f> 85 7f 22 00 00 49 8d 45 18 84 db 48 89 85 68 ff ff ff 75 28 48
RSP: 0018:ffffc9000204f660 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 1ffff92000409ed4
RDX: 1ffff92000409000 RSI: 0000000000000001 RDI: ffff8880234938a0
RBP: ffffc9000204f728 R08: 0000000000000001 R09: ffffffff90227997
R10: 0000000000000001 R11: 0000000000000001 R12: ffff8880b9c35640
R13: ffff888023493880 R14: 0000000000035640 R15: ffffc90002048000
preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:5535
irqentry_exit+0x31/0x80 kernel/entry/common.c:426
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647
RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:91 [inline]
RIP: 0010:lock_release+0x124/0x720 kernel/locking/lockdep.c:5525
Code: 85 e8 02 00 00 65 4c 8b 34 25 00 f0 01 00 49 8d be f4 09 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 14 02 <48> 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 64 05 00 00 45
RSP: 0018:ffffc9000204f800 EFLAGS: 00000a07
RAX: dffffc0000000000 RBX: ffffffff8dc9a4ac RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff888023494274
RBP: 1ffff92000409f02 R08: 0000000000000000 R09: ffffffff8dc97217
R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff8bf79320
R13: 0000000000000000 R14: ffff888023493880 R15: 0000000000000000
rcu_lock_release include/linux/rcupdate.h:272 [inline]
rcu_read_unlock include/linux/rcupdate.h:711 [inline]
is_bpf_text_address+0xcb/0x160 kernel/bpf/core.c:706
kernel_text_address kernel/extable.c:151 [inline]
kernel_text_address+0xbd/0xf0 kernel/extable.c:120
__kernel_text_address+0x9/0x30 kernel/extable.c:105
unwind_get_return_address arch/x86/kernel/unwind_orc.c:318 [inline]
unwind_get_return_address+0x51/0x90 arch/x86/kernel/unwind_orc.c:313
arch_stack_walk+0x93/0xe0 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121
kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:428 [inline]
____kasan_kmalloc mm/kasan/common.c:507 [inline]
____kasan_kmalloc mm/kasan/common.c:466 [inline]
__kasan_kmalloc+0x9b/0xd0 mm/kasan/common.c:516
kmalloc include/linux/slab.h:556 [inline]
kzalloc include/linux/slab.h:686 [inline]
tipc_group_create+0xb7/0x8d0 net/tipc/group.c:172
tipc_sk_join net/tipc/socket.c:3074 [inline]
tipc_setsockopt+0x470/0xe70 net/tipc/socket.c:3191
__sys_setsockopt+0x2db/0x610 net/socket.c:2104
__do_sys_setsockopt net/socket.c:2115 [inline]
__se_sys_setsockopt net/socket.c:2112 [inline]
__x64_sys_setsockopt+0xba/0x150 net/socket.c:2112
do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665d9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb6bc30b188 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9
RDX: 0000000000000087 RSI: 000000000000010f RDI: 0000000000000005
RBP: 00000000004bfcb9 R08: 00000000000004bd R09: 0000000000000000
R10: 0000000020000180 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007fff016f29cf R14: 00007fb6bc30b300 R15: 0000000000022000
softirq: huh, entered softirq 6 TASKLET ffffffff8145dc00 with preempt_count 00000101, exited with 00000102?