linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Richard Weinberger <richard.weinberger@gmail.com>
To: LKML <linux-kernel@vger.kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>,
	aryabinin@virtuozzo.com, Alexander Potapenko <glider@google.com>,
	Dmitry Vyukov <dvyukov@google.com>,
	kasan-dev@googlegroups.com
Subject: BUG: Invalid wait context with KMEMLEAK and KASAN enabled
Date: Sun, 6 Dec 2020 23:59:16 +0100	[thread overview]
Message-ID: <CAFLxGvwienJ7sU2+QAhFt+ywS9iYkbAXDGviuTC-4CVwLOhXfA@mail.gmail.com> (raw)

Hi!

With both KMEMLEAK and KASAN enabled, I'm facing the following lockdep
splat at random times on Linus' tree as of today.
Sometimes it happens at bootup, sometimes much later when userspace has started.

Does this ring a bell?

[    2.298447] =============================
[    2.298971] [ BUG: Invalid wait context ]
[    2.298971] 5.10.0-rc6+ #388 Not tainted
[    2.298971] -----------------------------
[    2.298971] ksoftirqd/1/15 is trying to lock:
[    2.298971] ffff888100b94598 (&n->list_lock){....}-{3:3}, at:
free_debug_processing+0x3d/0x210
[    2.298971] other info that might help us debug this:
[    2.298971] context-{2:2}
[    2.298971] 1 lock held by ksoftirqd/1/15:
[    2.298971]  #0: ffffffff835f4140 (rcu_callback){....}-{0:0}, at:
rcu_core+0x408/0x1040
[    2.298971] stack backtrace:
[    2.298971] CPU: 1 PID: 15 Comm: ksoftirqd/1 Not tainted 5.10.0-rc6+ #388
[    2.298971] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS rel-1.12.0-0-ga698c89-rebuilt.opensuse.org 04/01/2014
[    2.298971] Call Trace:
[    2.298971]  <IRQ>
[    2.298971]  dump_stack+0x9a/0xcc
[    2.298971]  __lock_acquire.cold+0xce/0x34b
[    2.298971]  ? lockdep_hardirqs_on_prepare+0x1f0/0x1f0
[    2.298971]  ? rcu_read_lock_sched_held+0x9c/0xd0
[    2.298971]  lock_acquire+0x153/0x4c0
[    2.298971]  ? free_debug_processing+0x3d/0x210
[    2.298971]  ? lock_release+0x690/0x690
[    2.298971]  ? rcu_read_lock_bh_held+0xb0/0xb0
[    2.298971]  ? pvclock_clocksource_read+0xd9/0x1a0
[    2.298971]  _raw_spin_lock_irqsave+0x3b/0x80
[    2.298971]  ? free_debug_processing+0x3d/0x210
[    2.298971]  ? qlist_free_all+0x35/0xd0
[    2.298971]  free_debug_processing+0x3d/0x210
[    2.298971]  __slab_free+0x286/0x490
[    2.298971]  ? lockdep_enabled+0x39/0x50
[    2.298971]  ? rcu_read_lock_sched_held+0x9c/0xd0
[    2.298971]  ? run_posix_cpu_timers+0x256/0x2c0
[    2.298971]  ? rcu_read_lock_bh_held+0xb0/0xb0
[    2.298971]  ? posix_cpu_timers_exit_group+0x30/0x30
[    2.298971]  qlist_free_all+0x59/0xd0
[    2.298971]  ? qlist_free_all+0xd0/0xd0
[    2.298971]  per_cpu_remove_cache+0x47/0x50
[    2.298971]  flush_smp_call_function_queue+0xea/0x2b0
[    2.298971]  __sysvec_call_function+0x6c/0x250
[    2.298971]  asm_call_irq_on_stack+0x12/0x20
[    2.298971]  </IRQ>
[    2.298971]  sysvec_call_function+0x84/0xa0
[    2.298971]  asm_sysvec_call_function+0x12/0x20
[    2.298971] RIP: 0010:__asan_load4+0x1d/0x80
[    2.298971] Code: 10 00 75 ee c3 0f 1f 84 00 00 00 00 00 4c 8b 04
24 48 83 ff fb 77 4d 48 b8 ff ff ff ff ff 7f ff ff 48 39 c7 76 3e 48
8d 47 03 <48> 89 c2 83 e2 07 48 83 fa 02 76 17 48 b9 00 00 00 00 00 fc
ff df
[    2.298971] RSP: 0000:ffff888100e4f858 EFLAGS: 00000216
[    2.298971] RAX: ffffffff83c55773 RBX: ffffffff81002431 RCX: dffffc0000000000
[    2.298971] RDX: 0000000000000001 RSI: ffffffff83ee8d78 RDI: ffffffff83c55770
[    2.298971] RBP: ffffffff83c5576c R08: ffffffff81083433 R09: fffffbfff07e333d
[    2.298971] R10: 000000000001803d R11: fffffbfff07e333c R12: ffffffff83c5575c
[    2.298971] R13: ffffffff83c55774 R14: ffffffff83c55770 R15: ffffffff83c55770
[    2.298971]  ? ret_from_fork+0x21/0x30
[    2.298971]  ? __orc_find+0x63/0xc0
[    2.298971]  ? stack_access_ok+0x35/0x90
[    2.298971]  __orc_find+0x63/0xc0
[    2.298971]  unwind_next_frame+0x1ee/0xbd0
[    2.298971]  ? ret_from_fork+0x22/0x30
[    2.298971]  ? ret_from_fork+0x21/0x30
[    2.298971]  ? deref_stack_reg+0x40/0x40
[    2.298971]  ? __unwind_start+0x2e8/0x370
[    2.298971]  ? create_prof_cpu_mask+0x20/0x20
[    2.298971]  arch_stack_walk+0x83/0xf0
[    2.298971]  ? ret_from_fork+0x22/0x30
[    2.298971]  ? rcu_core+0x488/0x1040
[    2.298971]  stack_trace_save+0x8c/0xc0
[    2.298971]  ? stack_trace_consume_entry+0x80/0x80
[    2.298971]  ? sched_clock_local+0x99/0xc0
[    2.298971]  kasan_save_stack+0x1b/0x40
[    2.298971]  ? kasan_save_stack+0x1b/0x40
[    2.298971]  ? kasan_set_track+0x1c/0x30
[    2.298971]  ? kasan_set_free_info+0x1b/0x30
[    2.298971]  ? __kasan_slab_free+0x10f/0x150
[    2.298971]  ? kmem_cache_free+0xa8/0x350
[    2.298971]  ? rcu_core+0x488/0x1040
[    2.298971]  ? __do_softirq+0x101/0x573
[    2.298971]  ? run_ksoftirqd+0x21/0x50
[    2.298971]  ? smpboot_thread_fn+0x1fc/0x380
[    2.298971]  ? kthread+0x1c7/0x220
[    2.298971]  ? ret_from_fork+0x22/0x30
[    2.298971]  ? lockdep_hardirqs_on_prepare+0x1f0/0x1f0
[    2.298971]  ? rcu_read_lock_sched_held+0x9c/0xd0
[    2.298971]  ? lock_acquire+0x153/0x4c0
[    2.298971]  ? rcu_core+0x408/0x1040
[    2.298971]  ? lock_release+0x690/0x690
[    2.298971]  ? lockdep_enabled+0x39/0x50
[    2.298971]  ? mark_held_locks+0x49/0x90
[    2.298971]  kasan_set_track+0x1c/0x30
[    2.298971]  kasan_set_free_info+0x1b/0x30
[    2.298971]  __kasan_slab_free+0x10f/0x150
[    2.298971]  ? rcu_core+0x488/0x1040
[    2.298971]  kmem_cache_free+0xa8/0x350
[    2.298971]  ? __ia32_compat_sys_move_pages+0x130/0x130
[    2.298971]  rcu_core+0x488/0x1040
[    2.298971]  ? call_rcu+0x5d0/0x5d0
[    2.298971]  ? rcu_read_lock_sched_held+0x9c/0xd0
[    2.298971]  ? rcu_read_lock_bh_held+0xb0/0xb0
[    2.298971]  __do_softirq+0x101/0x573
[    2.298971]  ? trace_event_raw_event_irq_handler_exit+0x150/0x150
[    2.298971]  run_ksoftirqd+0x21/0x50
[    2.298971]  smpboot_thread_fn+0x1fc/0x380
[    2.298971]  ? smpboot_register_percpu_thread+0x180/0x180
[    2.298971]  ? __kthread_parkme+0xbb/0xd0
[    2.298971]  ? smpboot_register_percpu_thread+0x180/0x180
[    2.298971]  kthread+0x1c7/0x220
[    2.298971]  ? kthread_create_on_node+0xd0/0xd0
[    2.298971]  ret_from_fork+0x22/0x30

-- 
Thanks,
//richard

             reply	other threads:[~2020-12-06 23:00 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-06 22:59 Richard Weinberger [this message]
2020-12-07  4:35 ` BUG: Invalid wait context with KMEMLEAK and KASAN enabled Boqun Feng
2020-12-07  7:38   ` Richard Weinberger

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=CAFLxGvwienJ7sU2+QAhFt+ywS9iYkbAXDGviuTC-4CVwLOhXfA@mail.gmail.com \
    --to=richard.weinberger@gmail.com \
    --cc=aryabinin@virtuozzo.com \
    --cc=catalin.marinas@arm.com \
    --cc=dvyukov@google.com \
    --cc=glider@google.com \
    --cc=kasan-dev@googlegroups.com \
    --cc=linux-kernel@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).