search for: lockdep

From: Borislav Petkov <bp at suse.de> So tools/ has been growing three, at a different stage of their development export.h headers and so we should unite into one. Add tools/include/ to the include path of virtio and liblockdep to pick the shared header now. Cc: Sasha Levin <sasha.levin at oracle.com> Cc: Peter Zijlstra <a.p.zijlstra at chello.nl> Cc: Paul Mackerras <paulus at samba.org> Cc: Ingo Molnar <mingo at redhat.com> Cc: Arnaldo Carvalho de Melo <acme at ghostprotocols.net> Cc: Rusty...

From: Borislav Petkov <bp at suse.de> So tools/ has been growing three, at a different stage of their development export.h headers and so we should unite into one. Add tools/include/ to the include path of virtio and liblockdep to pick the shared header now. Cc: Sasha Levin <sasha.levin at oracle.com> Cc: Peter Zijlstra <a.p.zijlstra at chello.nl> Cc: Paul Mackerras <paulus at samba.org> Cc: Ingo Molnar <mingo at redhat.com> Cc: Arnaldo Carvalho de Melo <acme at ghostprotocols.net> Cc: Rusty...

Hi, I'm resending this patch series. It's rediffed against linux-next branch of Joel's git tree. The first four patches are obvious fixes of deadlocks in quota code and should go in as soon as possible. The other three patches implement lockdep support for OCFS2 cluster locks. So you can have a look whether the code make sence to you and possibly merge them. They should be NOP when lockdep is disabled and help a lot when debugging various locking problems (with these patches I found the problems fixed in the beginning of the series). BT...

Lockdep complains about btrfs''s async commit: [ 2372.462171] [ BUG: bad unlock balance detected! ] [ 2372.462191] 3.12.0+ #32 Tainted: G W [ 2372.462209] ------------------------------------- [ 2372.462228] ceph-osd/14048 is trying to release lock (sb_internal) at: [ 2372.462275] [<ffff...

Hi, here comes the next version of OCFS2 lockdep support. I've dropped patches with fixes from the series since they were already merged. As Joel suggested, I've simplified the main patch a bit so that we don't have ifdefs around lock declarations and there are also a few other minor improvements. Honza

...: Move syscall and arch specific defines from perf.h perf tools: Move sys_perf_event_open function from perf.h perf tools: Move ACCESS_ONCE from perf.h header tools/include/linux/compiler.h | 2 + tools/{virtio => include}/linux/export.h | 5 + .../lockdep/uinclude => include}/linux/types.h | 29 ++- tools/lib/lockdep/Makefile | 2 +- tools/lib/lockdep/uinclude/linux/export.h | 7 - tools/perf/MANIFEST | 2 + tools/perf/Makefile.perf | 5 +- tool...

...: Move syscall and arch specific defines from perf.h perf tools: Move sys_perf_event_open function from perf.h perf tools: Move ACCESS_ONCE from perf.h header tools/include/linux/compiler.h | 2 + tools/{virtio => include}/linux/export.h | 5 + .../lockdep/uinclude => include}/linux/types.h | 29 ++- tools/lib/lockdep/Makefile | 2 +- tools/lib/lockdep/uinclude/linux/export.h | 7 - tools/perf/MANIFEST | 2 + tools/perf/Makefile.perf | 5 +- tool...

...: Borislav Petkov <bp at suse.de> Date: Sun, 23 Feb 2014 12:04:53 +0100 Subject: [PATCH] tools: Unify export.h So tools/ has been growing three, at a different stage of their development export.h headers and so we should unite into one. Add tools/include/ to the include path of virtio and liblockdep to pick the shared header now. Cc: Sasha Levin <sasha.levin at oracle.com> Cc: Peter Zijlstra <a.p.zijlstra at chello.nl> Cc: Paul Mackerras <paulus at samba.org> Cc: Ingo Molnar <mingo at redhat.com> Cc: Arnaldo Carvalho de Melo <acme at ghostprotocols.net> Cc: Rusty...

https://bugs.freedesktop.org/show_bug.cgi?id=67277 Priority: medium Bug ID: 67277 Assignee: nouveau at lists.freedesktop.org Summary: Lockdep splat on kernel 3.10.0 QA Contact: xorg-team at lists.x.org Severity: normal Classification: Unclassified OS: Linux (All) Reporter: peter at hurleysoftware.com Hardware: x86-64 (AMD64) Status: NEW Version: unspecified...

From: Borislav Petkov <bp at suse.de> So tools/ has been growing three, at a different stage of their development export.h headers and so we should unite into one. Add tools/include/ to the include path of virtio and liblockdep to pick the shared header now. Cc: Sasha Levin <sasha.levin at oracle.com> Cc: Peter Zijlstra <a.p.zijlstra at chello.nl> Cc: Paul Mackerras <paulus at samba.org> Cc: Ingo Molnar <mingo at redhat.com> Cc: Arnaldo Carvalho de Melo <acme at ghostprotocols.net> Cc: Rusty...

From: Borislav Petkov <bp at suse.de> So tools/ has been growing three, at a different stage of their development export.h headers and so we should unite into one. Add tools/include/ to the include path of virtio and liblockdep to pick the shared header now. Cc: Sasha Levin <sasha.levin at oracle.com> Cc: Peter Zijlstra <a.p.zijlstra at chello.nl> Cc: Paul Mackerras <paulus at samba.org> Cc: Ingo Molnar <mingo at redhat.com> Cc: Arnaldo Carvalho de Melo <acme at ghostprotocols.net> Cc: Rusty...

...: Borislav Petkov <bp at suse.de> Date: Sun, 23 Feb 2014 12:04:53 +0100 Subject: [PATCH] tools: Unify export.h So tools/ has been growing three, at a different stage of their development export.h headers and so we should unite into one. Add tools/include/ to the include path of virtio and liblockdep to pick the shared header now. Cc: Sasha Levin <sasha.levin at oracle.com> Cc: Peter Zijlstra <a.p.zijlstra at chello.nl> Cc: Paul Mackerras <paulus at samba.org> Cc: Ingo Molnar <mingo at redhat.com> Cc: Arnaldo Carvalho de Melo <acme at ghostprotocols.net> Cc: Rusty...

Hi, the first four patches in this series fix locking problems in OCFS2 quota code (three of them can lead to potential deadlocks). The fifth patch reorders ip_alloc_sem for directories to be acquired before localalloc locks. Mark would you please merge these? The last two patches implement lockdep annotations for OCFS2 cluster locks. We annotate all the cluster locks except for special ones like open lock or local quota file lock - these are not held by any particular process and thus lockdep cannot properly track them. I can still hit some lockdep warnings with it (I'll report them sepa...

This will otherwise cause a lockdep splat if reservations were a real lock type, so warn when nouveau forgets to unpin a buffer, and fix up the ones I've hit. Signed-off-by: Maarten Lankhorst <maarten.lankhorst at canonical.com> --- diff --git a/drivers/gpu/drm/nouveau/nouveau_abi16.c b/drivers/gpu/drm/nouveau/nouveau_...

This will otherwise cause a lockdep splat, so warn when nouveau forgets to unpin a buffer, and fix up the ones I've hit. Signed-off-by: Maarten Lankhorst <maarten.lankhorst at canonical.com> --- drivers/gpu/drm/nouveau/nouveau_abi16.c | 1 + drivers/gpu/drm/nouveau/nouveau_fbcon.c | 1 + drivers/gpu/drm/nouveau/nouv...

...urn, this means that we mustn't run two try_fill_recv concurrently. Which of course we don't. We do run try_fill_recv sometimes from a softirq napi context, and sometimes from a fully preemptible context, but the later always runs with napi disabled. However, when it comes to the seqcount, lockdep is trying to enforce the rule that the same lock isn't accessed from preemptible and softirq context - it doesn't know about napi being enabled/disabled. This causes a false-positive warning: WARNING: inconsistent lock state ... inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. As a...

The freeze rwsem is taken by sb_start_intwrite() and dropped during the commit_ or end_transaction(). In the async case, that happens in a worker thread. Tell lockdep the calling thread is releasing ownership of the rwsem and the async thread is picking it up. Josef and I worked out a more complicated solution that made the async commit thread join and potentially get a later transaction, but it failed my initial smoke test and Dave pointed out that XFS avoid...

...his: [ 30.457369] Possible unsafe locking scenario: [ 30.457375] CPU0 [ 30.457378] ---- [ 30.457381] lock(&mgr->vm_lock); [ 30.457386] <Interrupt> [ 30.457389] lock(&mgr->vm_lock); [ 30.457394] *** DEADLOCK *** <snips 999 lockdep lines and zillion ATOMIC_SLEEP gripes>

This reverts commit ea5d404655ba ("vhost: fix release path lockdep checks") In commit 47283bef7ed3 ("vhost: move memory pointer to VQs"), RCU operations have been replaced by mutex, we need to remove the no longer used `locked' parameter by reverting original patch. Conflicts: drivers/vhost/net.c drivers/vhost/vhost.c drivers/vhost/vhost.h...

From: Dexuan Cui <decui at microsoft.com> Date: Mon, 30 Sep 2019 18:43:50 +0000 > Lockdep is unhappy if two locks from the same class are held. > > Fix the below warning for hyperv and virtio sockets (vmci socket code > doesn't have the issue) by using lock_sock_nested() when __vsock_release() > is called recursively: ... > Tested-by: Stefano Garzarella <sgarzare...