rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-...!: (1 GPs behind) idle=2ad/1/0x4000000000000000 softirq=76884/76885 fqs=1
(t=13808 jiffies g=127321 q=587)
NMI backtrace for cpu 1
CPU: 1 PID: 19386 Comm: syz-executor.4 Not tainted 5.17.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
rcu_dump_cpu_stacks+0x25e/0x3f0 kernel/rcu/tree_stall.h:343
print_cpu_stall kernel/rcu/tree_stall.h:604 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:688 [inline]
rcu_pending kernel/rcu/tree.c:3919 [inline]
rcu_sched_clock_irq.cold+0x402/0x755 kernel/rcu/tree.c:2617
update_process_times+0x16d/0x200 kernel/time/timer.c:1785
tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:226
tick_sched_timer+0x1b0/0x2d0 kernel/time/tick-sched.c:1428
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x1c0/0xe50 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:unwind_next_frame+0xde3/0x1ce0 arch/x86/kernel/unwind_orc.c:593
Code: d2 0f 95 c2 40 84 d6 0f 85 75 0d 00 00 83 e1 07 38 c8 0f 9e c2 84 c0 0f 95 c0 84 c2 0f 85 60 0d 00 00 41 0f b6 40 04 c0 e8 04 <3c> 01 0f 84 98 05 00 00 3c 04 74 21 84 c0 0f 84 b6 00 00 00 80 3d
RSP: 0018:ffffc9000440f0a0 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 1ffff92000881e1c RCX: 0000000000000001
RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffffc9000440f1d0
RBP: 0000000000000001 R08: ffffffff8e11245c R09: 0000000000000001
R10: fffff52000881e3a R11: 0000000000088078 R12: ffffc9000440fe58
R13: ffffc9000440f1ad R14: ffffc9000440f178 R15: ffffffff8e112460
arch_stack_walk+0x7d/0xe0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38
kasan_set_track mm/kasan/common.c:45 [inline]
set_alloc_info mm/kasan/common.c:436 [inline]
____kasan_kmalloc mm/kasan/common.c:515 [inline]
____kasan_kmalloc mm/kasan/common.c:474 [inline]
__kasan_kmalloc+0xa6/0xd0 mm/kasan/common.c:524
kasan_kmalloc include/linux/kasan.h:270 [inline]
__do_kmalloc mm/slab.c:3694 [inline]
__kmalloc_track_caller+0x206/0x4d0 mm/slab.c:3709
kstrdup+0x36/0x70 mm/util.c:60
kstrdup_const+0x53/0x80 mm/util.c:83
__kernfs_new_node+0x9d/0x8b0 fs/kernfs/dir.c:581
kernfs_new_node+0x93/0x120 fs/kernfs/dir.c:647
__kernfs_create_file+0x51/0x350 fs/kernfs/file.c:987
sysfs_add_file_mode_ns+0x20f/0x3f0 fs/sysfs/file.c:294
create_files fs/sysfs/group.c:64 [inline]
internal_create_group+0x322/0xb10 fs/sysfs/group.c:148
internal_create_groups.part.0+0x90/0x140 fs/sysfs/group.c:188
internal_create_groups fs/sysfs/group.c:184 [inline]
sysfs_create_groups+0x25/0x50 fs/sysfs/group.c:214
setup_port+0x387/0x1580 drivers/infiniband/core/sysfs.c:1251
ib_setup_port_attrs+0x1e7/0x5c0 drivers/infiniband/core/sysfs.c:1435
add_one_compat_dev drivers/infiniband/core/device.c:968 [inline]
add_one_compat_dev+0x517/0x7f0 drivers/infiniband/core/device.c:919
rdma_dev_init_net+0x28b/0x480 drivers/infiniband/core/device.c:1184
ops_init+0xaf/0x470 net/core/net_namespace.c:140
setup_net+0x554/0xbb0 net/core/net_namespace.c:330
copy_net_ns+0x318/0x760 net/core/net_namespace.c:474
create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110
unshare_nsproxy_namespaces+0xc1/0x1f0 kernel/nsproxy.c:226
ksys_unshare+0x445/0x920 kernel/fork.c:3048
__do_sys_unshare kernel/fork.c:3119 [inline]
__se_sys_unshare kernel/fork.c:3117 [inline]
__x64_sys_unshare+0x2d/0x40 kernel/fork.c:3117
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f08b9a5c059
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f08b83d1168 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007f08b9b6ef60 RCX: 00007f08b9a5c059
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000042000000
RBP: 00007f08b9ab608d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdb60c2b0f R14: 00007f08b83d1300 R15: 0000000000022000
</TASK>
hrtimer: interrupt took 138827785636 ns
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 0f 95 c2 setne %dl
3: 40 84 d6 test %dl,%sil
6: 0f 85 75 0d 00 00 jne 0xd81
c: 83 e1 07 and $0x7,%ecx
f: 38 c8 cmp %cl,%al
11: 0f 9e c2 setle %dl
14: 84 c0 test %al,%al
16: 0f 95 c0 setne %al
19: 84 c2 test %al,%dl
1b: 0f 85 60 0d 00 00 jne 0xd81
21: 41 0f b6 40 04 movzbl 0x4(%r8),%eax
26: c0 e8 04 shr $0x4,%al
* 29: 3c 01 cmp $0x1,%al <-- trapping instruction
2b: 0f 84 98 05 00 00 je 0x5c9
31: 3c 04 cmp $0x4,%al
33: 74 21 je 0x56
35: 84 c0 test %al,%al
37: 0f 84 b6 00 00 00 je 0xf3
3d: 80 .byte 0x80
3e: 3d .byte 0x3d