rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...0: (0 ticks this GP) idle=f4d/1/0x4000000000000000 softirq=115621/115621 fqs=5241
(detected by 1, t=10502 jiffies, g=211273, q=3916)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 1621 Comm: kworker/u4:8 Not tainted 5.16.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_nc_worker
RIP: 0010:mark_lock+0x211/0x1e00 kernel/locking/lockdep.c:4624
Code: 00 74 08 4c 89 f7 e8 4e eb 69 00 bb 01 00 00 00 45 85 2e 0f 84 a7 00 00 00 48 c7 44 24 60 0e 36 e0 45 4b c7 04 27 00 00 00 00 <4b> c7 44 27 0f 00 00 00 00 43 c6 44 27 17 00 4b c7 44 27 1f 00 00
RSP: 0018:ffffc90000007780 EFLAGS: 00000006
RAX: 1ffffffff1f1c72a RBX: 0000000000000001 RCX: ffffffff81667041
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8ff9aee0
RBP: ffffc90000007970 R08: dffffc0000000000 R09: fffffbfff1ff35dd
R10: fffffbfff1ff35dd R11: 0000000000000000 R12: 1ffff92000000efc
R13: 0000000000000200 R14: ffffffff8f8e3950 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f99cc25ffb8 CR3: 000000000c88e000 CR4: 00000000003506f0
DR0: 0080ffff00000000 DR1: 0080ffff00000000 DR2: 0080ffff00000000
DR3: 0080ffff00000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
mark_usage kernel/locking/lockdep.c:4526 [inline]
__lock_acquire+0xd38/0x2b00 kernel/locking/lockdep.c:4981
lock_acquire+0x19f/0x4d0 kernel/locking/lockdep.c:5637
rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:268
rcu_read_lock include/linux/rcupdate.h:688 [inline]
advance_sched+0x6e7/0x930 net/sched/sch_taprio.c:767
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x50b/0xa60 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x3b3/0x1040 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0xf9/0x270 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:lock_is_held_type+0x4e/0x190 kernel/locking/lockdep.c:5673
Code: b4 ec 03 00 0f 84 0c 01 00 00 65 8b 05 cb 6d f0 75 85 c0 0f 85 fd 00 00 00 65 4c 8b 2c 25 c0 6f 02 00 41 83 bd 5c 0a 00 00 00 <0f> 85 e6 00 00 00 41 89 f6 49 89 ff 48 c7 04 24 00 00 00 00 9c 8f
RSP: 0018:ffffc900052df958 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00000000ffffffff RCX: 0000000080000001
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffffffff8cb1daa0
RBP: ffffc900052dfa28 R08: dffffc0000000000 R09: fffffbfff1bfd18e
R10: fffffbfff1bfd18e R11: 0000000000000000 R12: 0000000000000002
R13: ffff88809e95ba00 R14: dffffc0000000000 R15: 0000000000000000
lock_is_held include/linux/lockdep.h:283 [inline]
rcu_read_lock_sched_held+0x89/0x130 kernel/rcu/update.c:125
trace_lock_acquire+0x59/0x190 include/trace/events/lock.h:13
lock_acquire+0xa5/0x4d0 kernel/locking/lockdep.c:5608
rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:268
rcu_read_lock include/linux/rcupdate.h:688 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:412 [inline]
batadv_nc_worker+0xc8/0x5b0 net/batman-adv/network-coding.c:723
process_one_work+0x853/0x1140 kernel/workqueue.c:2298
worker_thread+0xac1/0x1320 kernel/workqueue.c:2445
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
----------------
Code disassembly (best guess):
0: 00 74 08 4c add %dh,0x4c(%rax,%rcx,1)
4: 89 f7 mov %esi,%edi
6: e8 4e eb 69 00 callq 0x69eb59
b: bb 01 00 00 00 mov $0x1,%ebx
10: 45 85 2e test %r13d,(%r14)
13: 0f 84 a7 00 00 00 je 0xc0
19: 48 c7 44 24 60 0e 36 movq $0x45e0360e,0x60(%rsp)
20: e0 45
22: 4b c7 04 27 00 00 00 movq $0x0,(%r15,%r12,1)
29: 00
* 2a: 4b c7 44 27 0f 00 00 movq $0x0,0xf(%r15,%r12,1) <-- trapping instruction
31: 00 00
33: 43 c6 44 27 17 00 movb $0x0,0x17(%r15,%r12,1)
39: 4b rex.WXB
3a: c7 .byte 0xc7
3b: 44 27 rex.R (bad)
3d: 1f (bad)