rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P32748/1:b..l P30789/1:b..l
(detected by 0, t=10502 jiffies, g=280273, q=62)
task:kworker/u4:5 state:R running task stack:18808 pid:30789 ppid: 2 flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xb72/0x1460 kernel/sched/core.c:6253
preempt_schedule_irq+0xf7/0x1c0 kernel/sched/core.c:6668
irqentry_exit+0x56/0x90 kernel/entry/common.c:425
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:lock_acquire+0x21f/0x4d0 kernel/locking/lockdep.c:5641
Code: 08 4c 89 f7 e8 12 71 6a 00 f6 84 24 81 00 00 00 02 0f 85 13 02 00 00 41 f7 c4 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 04 2f 00 00 00 00 43 c7 44 2f 09 00 00 00 00 43 c7 44 2f 11
RSP: 0018:ffffc9000433fa80 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92000867f60 RCX: ffff88807601c458
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000433fbd8 R08: dffffc0000000000 R09: fffffbfff1ff35dd
R10: fffffbfff1ff35dd R11: 0000000000000000 R12: 0000000000000246
R13: 1ffff92000867f58 R14: ffffc9000433fb00 R15: dffffc0000000000
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
task:syz-executor.3 state:R running task stack:26672 pid:32748 ppid: 6543 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xb72/0x1460 kernel/sched/core.c:6253
preempt_schedule_common kernel/sched/core.c:6419 [inline]
preempt_schedule+0x14d/0x190 kernel/sched/core.c:6444
preempt_schedule_thunk+0x16/0x18
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
_raw_spin_unlock_irqrestore+0x128/0x130 kernel/locking/spinlock.c:194
spin_unlock_irqrestore include/linux/spinlock.h:404 [inline]
timerfd_clock_was_set+0x1d3/0x2b0 fs/timerfd.c:113
clock_was_set+0x8a0/0x940 kernel/time/hrtimer.c:980
do_settimeofday64+0x618/0x7a0 kernel/time/timekeeping.c:1327
__do_sys_clock_settime kernel/time/posix-timers.c:1079 [inline]
__se_sys_clock_settime kernel/time/posix-timers.c:1067 [inline]
__x64_sys_clock_settime+0x23d/0x280 kernel/time/posix-timers.c:1067
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fadc6957ae9
RSP: 002b:00007fadc3ecd188 EFLAGS: 00000246 ORIG_RAX: 00000000000000e3
RAX: ffffffffffffffda RBX: 00007fadc6a6af60 RCX: 00007fadc6957ae9
RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000000
RBP: 00007fadc69b1f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe8fabe41f R14: 00007fadc3ecd300 R15: 0000000000022000
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g280273 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=1 timer-softirq=111424
rcu: rcu_preempt kthread starved for 10502 jiffies! g280273 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
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:I stack:26000 pid: 14 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xb72/0x1460 kernel/sched/core.c:6253
schedule+0x12b/0x1f0 kernel/sched/core.c:6326
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1881
rcu_gp_fqs_loop+0x1fd/0x770 kernel/rcu/tree.c:1955
rcu_gp_kthread+0xa5/0x350 kernel/rcu/tree.c:2128
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 32749 Comm: syz-executor.5 Not tainted 5.16.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:513 [inline]
RIP: 0010:queued_spin_lock include/asm-generic/qspinlock.h:82 [inline]
RIP: 0010:do_raw_spin_lock+0x16e/0x8e0 kernel/locking/spinlock_debug.c:115
Code: 48 89 df be 04 00 00 00 e8 cf 9b 68 00 43 8a 04 27 84 c0 4c 89 e2 0f 85 f9 03 00 00 8b 44 24 60 b9 01 00 00 00 f0 41 0f b1 0e <0f> 85 0b 03 00 00 65 8b 1d 5d 53 9a 7e 41 8a 44 15 00 84 c0 0f 85
RSP: 0018:ffffc90000dc0ba0 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffffc90000dc0c00 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffc90000dc0c00
RBP: ffffc90000dc0c70 R08: dffffc0000000000 R09: 0000000000000003
R10: fffff520001b8181 R11: 0000000000000004 R12: dffffc0000000000
R13: 1ffff11017365449 R14: ffff8880b9b2a240 R15: 1ffff920001b8180
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0c6ef1c408 CR3: 0000000027979000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__raw_spin_lock_irq include/linux/spinlock_api_smp.h:120 [inline]
_raw_spin_lock_irq+0xdb/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+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:rmqueue_pcplist+0x288/0x4e0 mm/page_alloc.c:3656
Code: 60 42 80 3c 2b 00 74 08 4c 89 e7 e8 c2 fb 09 00 f6 44 24 61 02 0f 85 8f 01 00 00 41 f7 c6 00 02 00 00 74 01 fb 48 8b 5c 24 10 <48> 85 db 0f 84 29 01 00 00 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74
RSP: 0018:ffffc90003b4ef20 EFLAGS: 00000206
RAX: cf17914bbe386b00 RBX: ffffea0001d7c340 RCX: ffffffff81667041
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90003b4f010 R08: dffffc0000000000 R09: fffffbfff1ff35df
R10: fffffbfff1ff35df R11: 0000000000000000 R12: ffffc90003b4ef80
R13: dffffc0000000000 R14: 0000000000000246 R15: ffff88813fffa700
rmqueue+0x1f04/0x2330 mm/page_alloc.c:3682
get_page_from_freelist+0x493/0x9e0 mm/page_alloc.c:4146
__alloc_pages+0x255/0x580 mm/page_alloc.c:5369
__get_free_pages+0x8/0x30 mm/page_alloc.c:5418
tlb_next_batch mm/mmu_gather.c:29 [inline]
__tlb_remove_page_size+0x1f5/0x3d0 mm/mmu_gather.c:83
__tlb_remove_page include/asm-generic/tlb.h:440 [inline]
zap_pte_range+0xb0e/0x1ba0 mm/memory.c:1360
zap_pmd_range mm/memory.c:1467 [inline]
zap_pud_range mm/memory.c:1496 [inline]
zap_p4d_range mm/memory.c:1517 [inline]
unmap_page_range+0x745/0xa20 mm/memory.c:1538
unmap_vmas+0x202/0x390 mm/memory.c:1615
exit_mmap+0x3c6/0x6f0 mm/mmap.c:3170
__mmput+0x111/0x3a0 kernel/fork.c:1113
exit_mm+0x211/0x2f0 kernel/exit.c:507
do_exit+0x688/0x24f0 kernel/exit.c:819
do_group_exit+0x168/0x2d0 kernel/exit.c:929
get_signal+0x1740/0x2120 kernel/signal.c:2852
arch_do_signal_or_restart+0x9c/0x730 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0x191/0x220 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x2e/0x70 kernel/entry/common.c:300
do_syscall_64+0x53/0xd0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f0c6eec9ae9
Code: Unable to access opcode bytes at RIP 0x7f0c6eec9abf.
RSP: 002b:00007f0c6c43f218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007f0c6efdcf68 RCX: 00007f0c6eec9ae9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f0c6efdcf6c
RBP: 00007f0c6efdcf60 R08: 000000000000000e R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000246 R12: 00007f0c6efdcf6c
R13: 00007ffff70432df R14: 00007f0c6c43f300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: 08 4c 89 f7 or %cl,-0x9(%rcx,%rcx,4)
4: e8 12 71 6a 00 callq 0x6a711b
9: f6 84 24 81 00 00 00 testb $0x2,0x81(%rsp)
10: 02
11: 0f 85 13 02 00 00 jne 0x22a
17: 41 f7 c4 00 02 00 00 test $0x200,%r12d
1e: 74 01 je 0x21
20: fb sti
21: 48 c7 44 24 40 0e 36 movq $0x45e0360e,0x40(%rsp)
28: e0 45
* 2a: 4b c7 04 2f 00 00 00 movq $0x0,(%r15,%r13,1) <-- trapping instruction
31: 00
32: 43 c7 44 2f 09 00 00 movl $0x0,0x9(%r15,%r13,1)
39: 00 00
3b: 43 rex.XB
3c: c7 .byte 0xc7
3d: 44 2f rex.R (bad)
3f: 11 .byte 0x11