From: Sachin Sant <sachinp@linux.vnet.ibm.com>
To: Kirill Tkhai <ktkhai@virtuozzo.com>
Cc: Linux-Next Mailing List <linux-next@vger.kernel.org>,
linuxppc-dev@lists.ozlabs.org, Michal Hocko <mhocko@suse.com>
Subject: Re: [5.6.0-rc2-next-20200218/powerpc] Boot failure on POWER9
Date: Tue, 18 Feb 2020 17:10:47 +0530 [thread overview]
Message-ID: <F5A68B0C-AFDE-4C45-B0F3-12A5154204E6@linux.vnet.ibm.com> (raw)
In-Reply-To: <0ba2a3c6-6593-2cee-1cef-983cd75f920f@virtuozzo.com>
>> could you please test your boot with original patch from here:
>>
>> https://patchwork.kernel.org/patch/11360007/
>
> After you tried the above patch instead of the problem patch,
> do one more test and apply the below on current linux-next.
> Please, say which of the patches makes your kernel bootable again.
>
> diff --git a/mm/memcontrol.c b/mm/memcontrol.c
> index 63bb6a2aab81..7b9b48dcbc60 100644
> --- a/mm/memcontrol.c
> +++ b/mm/memcontrol.c
> @@ -334,7 +334,7 @@ static int memcg_expand_one_shrinker_map(struct mem_cgroup *memcg,
> if (!old)
> return 0;
>
> - new = kvmalloc_node(sizeof(*new) + size, GFP_KERNEL, nid);
> + new = kmalloc_node(sizeof(*new) + size, GFP_KERNEL, nid);
> if (!new)
> return -ENOMEM;
>
> @@ -378,7 +378,7 @@ static int memcg_alloc_shrinker_maps(struct mem_cgroup *memcg)
> mutex_lock(&memcg_shrinker_map_mutex);
> size = memcg_shrinker_map_size;
> for_each_node(nid) {
> - map = kvzalloc_node(sizeof(*map) + size, GFP_KERNEL, nid);
> + map = kzalloc_node(sizeof(*map) + size, GFP_KERNEL, nid);
> if (!map) {
> memcg_free_shrinker_maps(memcg);
> ret = -ENOMEM;
With this incremental patch applied on top of current linux-next, machine fails to boot
[ 8.868433] BUG: Kernel NULL pointer dereference on read at 0x000073b0
[ 8.868439] Faulting instruction address: 0xc0000000003d55f4
[ 8.868444] Oops: Kernel access of bad area, sig: 11 [#1]
[ 8.868449] LE PAGE_SIZE=64K MMU=Hash SMP NR_CPUS=2048 NUMA pSeries
[ 8.868453] Modules linked in:
[ 8.868458] CPU: 18 PID: 1 Comm: systemd Not tainted 5.6.0-rc2-next-20200218-autotest+ #4
[ 8.868463] NIP: c0000000003d55f4 LR: c0000000003d5b94 CTR: 0000000000000000
[ 8.868468] REGS: c0000008b3783710 TRAP: 0300 Not tainted (5.6.0-rc2-next-20200218-autotest+)
[ 8.868474] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 24004844 XER: 00000000
[ 8.868481] CFAR: c00000000000dec4 DAR: 00000000000073b0 DSISR: 40000000 IRQMASK: 1
[ 8.868481] GPR00: c0000000003d5b94 c0000008b37839a0 c00000000155d400 c0000008b301f500
[ 8.868481] GPR04: 0000000000000dc0 0000000000000002 c0000000003fee38 c0000008bb298620
[ 8.868481] GPR08: 00000008ba1f0000 0000000000000001 0000000000000000 0000000000000000
[ 8.868481] GPR12: 0000000024004844 c00000001ec54200 0000000000000000 0000000000000000
[ 8.868481] GPR16: c0000008a1a60048 c000000001595898 c000000001750c18 0000000000000002
[ 8.868481] GPR20: c000000001750c28 c000000001624470 0000000fffffffe0 5deadbeef0000122
[ 8.868481] GPR24: 0000000000000001 0000000000000dc0 0000000000000002 c0000000003fee38
[ 8.868481] GPR28: c0000008b301f500 c0000008bb298620 0000000000000000 c00c000002286d00
[ 8.868529] NIP [c0000000003d55f4] ___slab_alloc+0x1f4/0x760
[ 8.868534] LR [c0000000003d5b94] __slab_alloc+0x34/0x60
[ 8.868538] Call Trace:
[ 8.868541] [c0000008b37839a0] [c0000000003d5734] ___slab_alloc+0x334/0x760 (unreliable)
[ 8.868547] [c0000008b3783a80] [c0000000003d5b94] __slab_alloc+0x34/0x60
[ 8.868553] [c0000008b3783ab0] [c0000000003d6fa0] __kmalloc_node+0x110/0x490
[ 8.868559] [c0000008b3783b30] [c0000000003fee38] mem_cgroup_css_online+0x108/0x270
[ 8.868565] [c0000008b3783b90] [c000000000235aa8] online_css+0x48/0xd0
[ 8.868571] [c0000008b3783bc0] [c00000000023eaec] cgroup_apply_control_enable+0x2ec/0x4d0
[ 8.868577] [c0000008b3783ca0] [c000000000242318] cgroup_mkdir+0x228/0x5f0
[ 8.868583] [c0000008b3783d10] [c00000000051e170] kernfs_iop_mkdir+0x90/0xf0
[ 8.868589] [c0000008b3783d50] [c00000000043dc00] vfs_mkdir+0x110/0x230
[ 8.868594] [c0000008b3783da0] [c000000000441c90] do_mkdirat+0xb0/0x1a0
[ 8.868601] [c0000008b3783e20] [c00000000000b278] system_call+0x5c/0x68
[ 8.868605] Instruction dump:
[ 8.868608] 7c421378 e95f0000 714a0001 4082fff0 4bffff64 60000000 60000000 faa10088
[ 8.868615] 3ea2000c 3ab57070 7b4a1f24 7d55502a <e94a73b0> 2faa0000 409e0394 3d02002a
[ 8.868623] ---[ end trace f9b8e3c36493f430 ]---
[ 8.870690]
[ 9.870701] Kernel panic - not syncing: Fatal exception
Thanks
-Sachin
next prev parent reply other threads:[~2020-02-18 11:44 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-18 10:45 [5.6.0-rc2-next-20200218/powerpc] Boot failure on POWER9 Sachin Sant
2020-02-18 10:50 ` Kirill Tkhai
2020-02-18 11:01 ` Kirill Tkhai
2020-02-18 11:35 ` Kirill Tkhai
2020-02-18 11:40 ` Sachin Sant [this message]
2020-02-18 11:55 ` Michal Hocko
2020-02-18 14:00 ` Sachin Sant
2020-02-18 14:26 ` Michal Hocko
2020-02-18 15:11 ` Sachin Sant
2020-02-18 15:24 ` Michal Hocko
2020-02-22 3:38 ` Christopher Lameter
2020-02-24 8:58 ` Michal Hocko
2020-02-26 18:25 ` Christopher Lameter
2020-02-26 18:41 ` Michal Hocko
2020-02-26 18:44 ` Christopher Lameter
2020-02-26 19:01 ` Michal Hocko
2020-02-26 20:31 ` David Rientjes
2020-02-26 20:52 ` Michal Hocko
2020-02-26 21:45 ` Vlastimil Babka
2020-02-26 22:29 ` Vlastimil Babka
2020-02-27 12:12 ` Michal Hocko
2020-02-27 16:00 ` Sachin Sant
2020-02-27 16:16 ` Vlastimil Babka
2020-02-27 18:26 ` Michal Hocko
2020-03-10 15:01 ` Michal Hocko
2020-03-12 12:18 ` Michael Ellerman
2020-03-12 16:51 ` Sachin Sant
2020-03-13 10:48 ` Michael Ellerman
2020-03-13 11:12 ` Srikar Dronamraju
2020-03-13 11:35 ` Vlastimil Babka
2020-03-14 8:10 ` Sachin Sant
2020-02-27 12:02 ` Michal Hocko
2020-02-18 11:38 ` Sachin Sant
2020-02-18 11:53 ` Kirill Tkhai
2020-03-17 13:17 ` [PATCH 0/4] Fix kmalloc_node on offline nodes Srikar Dronamraju
2020-03-17 13:17 ` [PATCH 1/4] mm: Check for node_online in node_present_pages Srikar Dronamraju
2020-03-17 13:37 ` Srikar Dronamraju
2020-03-17 13:17 ` [PATCH 2/4] mm/slub: Use mem_node to allocate a new slab Srikar Dronamraju
2020-03-17 13:34 ` Vlastimil Babka
2020-03-17 13:45 ` Srikar Dronamraju
2020-03-17 13:53 ` Vlastimil Babka
2020-03-17 14:51 ` Srikar Dronamraju
2020-03-17 15:29 ` Vlastimil Babka
2020-03-18 7:29 ` Srikar Dronamraju
2020-03-17 16:41 ` Srikar Dronamraju
2020-03-17 13:17 ` [PATCH 3/4] mm: Implement reset_numa_mem Srikar Dronamraju
2020-03-17 13:17 ` [PATCH 4/4] powerpc/numa: Set fallback nodes for offline nodes Srikar Dronamraju
2020-03-17 14:22 ` Bharata B Rao
2020-03-17 14:29 ` Srikar Dronamraju
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