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Message-ID: <b7624213-65e5-41d4-81ba-e95f885018dd@linux.ibm.com>
Date: Fri, 9 Jan 2026 17:51:15 +0530
From: Venkat Rao Bagalkote <venkat88@...ux.ibm.com>
To: Ming Lei <ming.lei@...hat.com>
Cc: Christoph Hellwig <hch@...radead.org>, linux-block@...r.kernel.org,
linux-scsi@...r.kernel.org, Jens Axboe <axboe@...nel.dk>,
James.Bottomley@...senpartnership.com, leonro@...dia.com,
kch@...dia.com, LKML <linux-kernel@...r.kernel.org>,
Madhavan Srinivasan <maddy@...ux.ibm.com>, riteshh@...ux.ibm.com,
ojaswin@...ux.ibm.com
Subject: Re: [next-20260108]kernel BUG at drivers/scsi/scsi_lib.c:1173!
On 09/01/26 5:25 pm, Ming Lei wrote:
> On Fri, Jan 09, 2026 at 05:14:36PM +0530, Venkat Rao Bagalkote wrote:
>> On 09/01/26 12:19 pm, Ming Lei wrote:
>>> On Thu, Jan 08, 2026 at 09:56:39PM -0800, Christoph Hellwig wrote:
>>>> I've seen the same when running xfstests on xfs, and bisected it to:
>>>>
>>>> commit ee623c892aa59003fca173de0041abc2ccc2c72d
>>>> Author: Ming Lei <ming.lei@...hat.com>
>>>> Date: Wed Dec 31 11:00:55 2025 +0800
>>>>
>>>> block: use bvec iterator helper for bio_may_need_split()
>>>>
>>> Hi Christoph and Venkat Rao Bagalkote,
>>>
>>> Unfortunately I can't duplicate the issue in my environment, can you test
>>> the following patch?
>>>
>>> diff --git a/block/blk.h b/block/blk.h
>>> index 98f4dfd4ec75..980eef1f5690 100644
>>> --- a/block/blk.h
>>> +++ b/block/blk.h
>>> @@ -380,7 +380,7 @@ static inline bool bio_may_need_split(struct bio *bio,
>>> return true;
>>> bv = __bvec_iter_bvec(bio->bi_io_vec, bio->bi_iter);
>>> - if (bio->bi_iter.bi_size > bv->bv_len)
>>> + if (bio->bi_iter.bi_size > bv->bv_len - bio->bi_iter.bi_bvec_done)
>>> return true;
>>> return bv->bv_len + bv->bv_offset > lim->max_fast_segment_size;
>>> }
>> Hello Ming,
>>
>>
>> This is not helping. I am hitting this issue, during kernel build itself.
> Can you confirm if it can fix the blktests ext4/056 first?
>
> If kernel building is running over new patched kernel, please provide the
> dmesg log. And if it is reproduciable, can you confirm if it can be fixed
> by reverting ee623c892aa59003 (block: use bvec iterator helper for bio_may_need_split())?
Unfortunately, even with revert, build fails.
commit c64b2ee9cddcb31546c8622ef018d344544a9388 (HEAD)
Author: Super User <root@...-zzci-1.ltc.tadn.ibm.com>
Date: Fri Jan 9 06:51:19 2026 -0600
Revert "block: use bvec iterator helper for bio_may_need_split()"
This reverts commit ee623c892aa59003fca173de0041abc2ccc2c72d.
Dmesg:
make -j 48 -s && make modules_install && make install
[ 1185.016758] hrtimer: interrupt took 7442 ns
[ 1814.191462] ------------[ cut here ]------------
[ 1814.191501] WARNING: block/blk-mq-dma.c:309 at
__blk_rq_map_sg+0x220/0x280, CPU#46: kworker/46:0H/253
[ 1814.191540] Modules linked in: bonding tls rfkill nft_fib_inet
nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4
nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_nat nf_conntrack
nf_defrag_ipv6 nf_defrag_ipv4 nf_tables sg pseries_rng vmx_crypto fuse
loop vsock_loopback vmw_vsock_virtio_transport_common vsock xfs nvme_tcp
nvme_fabrics nvme_core sr_mod sd_mod nvme_keyring cdrom nvme_auth hkdf
ibmvscsi ibmveth scsi_transport_srp dm_mirror dm_region_hash dm_log
dm_mod nfnetlink
[ 1814.191886] CPU: 46 UID: 0 PID: 253 Comm: kworker/46:0H Kdump: loaded
Not tainted 6.19.0-rc4-next-20260108 #1 VOLUNTARY
[ 1814.191917] Hardware name: IBM,8375-42A POWER9 (architected) 0x4e0202
0xf000005 of:IBM,FW950.80 (VL950_131) hv:phyp pSeries
[ 1814.191941] Workqueue: kblockd blk_mq_run_work_fn
[ 1814.191971] NIP: c000000000d05840 LR: c000000000d05828 CTR:
0000000000000000
[ 1814.191992] REGS: c00000000c4e7520 TRAP: 0700 Not tainted
(6.19.0-rc4-next-20260108)
[ 1814.192014] MSR: 800000000282b033 <SF,VEC,VSX,EE,FP,ME,IR,DR,RI,LE>
CR: 44002202 XER: 20040000
[ 1814.192109] CFAR: c0000000008f2b50 IRQMASK: 0
[ 1814.192109] GPR00: c000000000d05798 c00000000c4e77c0 c0000000024ea800
c0000000dc53d17c
[ 1814.192109] GPR04: c00000000c4e77f8 c00000000c4e77e8 c000000000d0490c
0000000000000000
[ 1814.192109] GPR08: 0000000001233cd8 0000000000000001 0000000000000000
c0080000070a18e8
[ 1814.192109] GPR12: c0000000011cf6a0 c000000011847300 c0000000002d4c08
c000000007cee280
[ 1814.192109] GPR16: c0000000d0c3e090 0000000000100001 c00000000ace1610
c0000000dc53d118
[ 1814.192109] GPR20: 0000000001233cd8 0000000000000000 c0000000dc53d12c
0000000000007000
[ 1814.192109] GPR24: c0000000dc53d328 fffffffffffffffd c0000000dc53d100
0000000000000002
[ 1814.192109] GPR28: c00000000c4e78a0 0000000000000000 c00c000000b697c0
c0000000af03ab00
[ 1814.192463] NIP [c000000000d05840] __blk_rq_map_sg+0x220/0x280
[ 1814.192488] LR [c000000000d05828] __blk_rq_map_sg+0x208/0x280
[ 1814.192513] Call Trace:
[ 1814.192526] [c00000000c4e77c0] [c000000000d05798]
__blk_rq_map_sg+0x178/0x280 (unreliable)
[ 1814.192565] [c00000000c4e7880] [c0000000011cf7bc]
scsi_alloc_sgtables+0x11c/0x700
[ 1814.192601] [c00000000c4e7920] [c008000007097c08]
sd_setup_read_write_cmnd+0xf0/0xcd0 [sd_mod]
[ 1814.192651] [c00000000c4e7a20] [c0000000011d1ce4]
scsi_prepare_cmd+0x324/0x440
[ 1814.192683] [c00000000c4e7a90] [c0000000011d2128]
scsi_queue_rq+0x328/0xb00
[ 1814.192723] [c00000000c4e7b50] [c000000000cfad00]
blk_mq_dispatch_rq_list+0x270/0x9b0
[ 1814.192756] [c00000000c4e7c00] [c000000000d09100]
__blk_mq_do_dispatch_sched+0x580/0x5a0
[ 1814.192790] [c00000000c4e7cb0] [c000000000d09844]
__blk_mq_sched_dispatch_requests+0x2b4/0x360
[ 1814.192825] [c00000000c4e7d20] [c000000000d099e4]
blk_mq_sched_dispatch_requests+0x74/0x110
[ 1814.192857] [c00000000c4e7d60] [c000000000cef4e8]
blk_mq_run_work_fn+0xe8/0x120
[ 1814.192892] [c00000000c4e7da0] [c0000000002c0cac]
process_one_work+0x41c/0x8b0
[ 1814.192925] [c00000000c4e7eb0] [c0000000002c149c]
worker_thread+0x35c/0x780
[ 1814.192956] [c00000000c4e7f80] [c0000000002d4e14] kthread+0x214/0x230
[ 1814.192986] [c00000000c4e7fe0] [c00000000000ded8]
start_kernel_thread+0x14/0x18
[ 1814.193022] Code: 813a001c 39400001 71291000 40820014 387a007c
4bbed2d5 60000000 a15a007c 7c1b5000 39200001 39400000 7d29505e
<0b090000> e9410068 e92d0c78 7d4a4a79
[ 1814.193151] ---[ end trace 0000000000000000 ]---
[ 1814.193232] ------------[ cut here ]------------
[ 1814.193248] kernel BUG at drivers/scsi/scsi_lib.c:1173!
[ 1814.193266] Oops: Exception in kernel mode, sig: 5 [#1]
[ 1814.193284] LE PAGE_SIZE=64K MMU=Hash SMP NR_CPUS=8192 NUMA pSeries
[ 1814.193305] Modules linked in: bonding tls rfkill nft_fib_inet
nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4
nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_nat nf_conntrack
nf_defrag_ipv6 nf_defrag_ipv4 nf_tables sg pseries_rng vmx_crypto fuse
loop vsock_loopback vmw_vsock_virtio_transport_common vsock xfs nvme_tcp
nvme_fabrics nvme_core sr_mod sd_mod nvme_keyring cdrom nvme_auth hkdf
ibmvscsi ibmveth scsi_transport_srp dm_mirror dm_region_hash dm_log
dm_mod nfnetlink
[ 1814.193616] CPU: 46 UID: 0 PID: 253 Comm: kworker/46:0H Kdump: loaded
Tainted: G W 6.19.0-rc4-next-20260108 #1 VOLUNTARY
[ 1814.193650] Tainted: [W]=WARN
[ 1814.193664] Hardware name: IBM,8375-42A POWER9 (architected) 0x4e0202
0xf000005 of:IBM,FW950.80 (VL950_131) hv:phyp pSeries
[ 1814.193691] Workqueue: kblockd blk_mq_run_work_fn
[ 1814.193720] NIP: c0000000011cf9a0 LR: c0000000011cf988 CTR:
0000000000000000
[ 1814.193743] REGS: c00000000c4e75e0 TRAP: 0700 Tainted: G W
(6.19.0-rc4-next-20260108)
[ 1814.193766] MSR: 800000000282b033 <SF,VEC,VSX,EE,FP,ME,IR,DR,RI,LE>
CR: 84002202 XER: 20040000
[ 1814.193864] CFAR: c0000000008f2cf0 IRQMASK: 0
[ 1814.193864] GPR00: c0000000011cf7bc c00000000c4e7880 c0000000024ea800
c0000000dc53d2d0
[ 1814.193864] GPR04: c00000000c4e77f8 c00000000c4e77e8 c000000000d0490c
0000000000000000
[ 1814.193864] GPR08: 0000000000000001 0000000000000001 0000000000000000
c0080000070a18e8
[ 1814.193864] GPR12: c0000000011cf6a0 c000000011847300 c0000000002d4c08
c000000007cee280
[ 1814.193864] GPR16: c0000000d0c3e090 0000000000100001 c00000000ace1610
c0000000dc53d118
[ 1814.193864] GPR20: 0000000000010000 0000000000000000 c0000000dc53d12c
0000000000000002
[ 1814.193864] GPR24: c0000000dc53d2c8 0000000000000002 c0000000d0be4828
c0000000dc53d11c
[ 1814.193864] GPR28: c0000000dc53d100 c0000000dc53d2d0 c0000000d4315a90
c0000000dc53d200
[ 1814.194193] NIP [c0000000011cf9a0] scsi_alloc_sgtables+0x300/0x700
[ 1814.194218] LR [c0000000011cf988] scsi_alloc_sgtables+0x2e8/0x700
[ 1814.194241] Call Trace:
[ 1814.194253] [c00000000c4e7880] [c0000000011cf7bc]
scsi_alloc_sgtables+0x11c/0x700 (unreliable)
[ 1814.194289] [c00000000c4e7920] [c008000007097c08]
sd_setup_read_write_cmnd+0xf0/0xcd0 [sd_mod]
[ 1814.194335] [c00000000c4e7a20] [c0000000011d1ce4]
scsi_prepare_cmd+0x324/0x440
[ 1814.194367] [c00000000c4e7a90] [c0000000011d2128]
scsi_queue_rq+0x328/0xb00
[ 1814.194397] [c00000000c4e7b50] [c000000000cfad00]
blk_mq_dispatch_rq_list+0x270/0x9b0
[ 1814.194428] [c00000000c4e7c00] [c000000000d09100]
__blk_mq_do_dispatch_sched+0x580/0x5a0
[ 1814.194465] [c00000000c4e7cb0] [c000000000d09844]
__blk_mq_sched_dispatch_requests+0x2b4/0x360
[ 1814.194499] [c00000000c4e7d20] [c000000000d099e4]
blk_mq_sched_dispatch_requests+0x74/0x110
[ 1814.194532] [c00000000c4e7d60] [c000000000cef4e8]
blk_mq_run_work_fn+0xe8/0x120
[ 1814.194564] [c00000000c4e7da0] [c0000000002c0cac]
process_one_work+0x41c/0x8b0
[ 1814.194595] [c00000000c4e7eb0] [c0000000002c149c]
worker_thread+0x35c/0x780
[ 1814.194626] [c00000000c4e7f80] [c0000000002d4e14] kthread+0x214/0x230
[ 1814.194659] [c00000000c4e7fe0] [c00000000000ded8]
start_kernel_thread+0x14/0x18
[ 1814.194689] Code: 813f0110 7d295214 913f0110 3bbf00d0 7fa3eb78
4b723315 60000000 811f00d0 39400000 39200001 7c08b840 7d29501e
<0b090000> 7f63db78 92ff00d0 4b7232ed
[ 1814.194820] ---[ end trace 0000000000000000 ]---
[ 1814.216370] pstore: backend (nvram) writing error (-1)
Logs:
make -j 48 -s && make modules_install && make install
[ 1185.016758] hrtimer: interrupt took 7442 ns
[ 1814.191462] ------------[ cut here ]------------
[ 1814.191501] WARNING: block/blk-mq-dma.c:309 at
__blk_rq_map_sg+0x220/0x280, CPU#46: kworker/46:0H/253
[ 1814.191540] Modules linked in: bonding tls rfkill nft_fib_inet
nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4
nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_nat nf_conntrack
nf_defrag_ipv6 nf_defrag_ipv4 nf_tables sg pseries_rng vmx_crypto fuse
loop vsock_loopback vmw_vsock_virtio_transport_common vsock xfs nvme_tcp
nvme_fabrics nvme_core sr_mod sd_mod nvme_keyring cdrom nvme_auth hkdf
ibmvscsi ibmveth scsi_transport_srp dm_mirror dm_region_hash dm_log
dm_mod nfnetlink
[ 1814.191886] CPU: 46 UID: 0 PID: 253 Comm: kworker/46:0H Kdump: loaded
Not tainted 6.19.0-rc4-next-20260108 #1 VOLUNTARY
[ 1814.191917] Hardware name: IBM,8375-42A POWER9 (architected) 0x4e0202
0xf000005 of:IBM,FW950.80 (VL950_131) hv:phyp pSeries
[ 1814.191941] Workqueue: kblockd blk_mq_run_work_fn
[ 1814.191971] NIP: c000000000d05840 LR: c000000000d05828 CTR:
0000000000000000
[ 1814.191992] REGS: c00000000c4e7520 TRAP: 0700 Not tainted
(6.19.0-rc4-next-20260108)
[ 1814.192014] MSR: 800000000282b033 <SF,VEC,VSX,EE,FP,ME,IR,DR,RI,LE>
CR: 44002202 XER: 20040000
[ 1814.192109] CFAR: c0000000008f2b50 IRQMASK: 0
[ 1814.192109] GPR00: c000000000d05798 c00000000c4e77c0 c0000000024ea800
c0000000dc53d17c
[ 1814.192109] GPR04: c00000000c4e77f8 c00000000c4e77e8 c000000000d0490c
0000000000000000
[ 1814.192109] GPR08: 0000000001233cd8 0000000000000001 0000000000000000
c0080000070a18e8
[ 1814.192109] GPR12: c0000000011cf6a0 c000000011847300 c0000000002d4c08
c000000007cee280
[ 1814.192109] GPR16: c0000000d0c3e090 0000000000100001 c00000000ace1610
c0000000dc53d118
[ 1814.192109] GPR20: 0000000001233cd8 0000000000000000 c0000000dc53d12c
0000000000007000
[ 1814.192109] GPR24: c0000000dc53d328 fffffffffffffffd c0000000dc53d100
0000000000000002
[ 1814.192109] GPR28: c00000000c4e78a0 0000000000000000 c00c000000b697c0
c0000000af03ab00
[ 1814.192463] NIP [c000000000d05840] __blk_rq_map_sg+0x220/0x280
[ 1814.192488] LR [c000000000d05828] __blk_rq_map_sg+0x208/0x280
[ 1814.192513] Call Trace:
[ 1814.192526] [c00000000c4e77c0] [c000000000d05798]
__blk_rq_map_sg+0x178/0x280 (unreliable)
[ 1814.192565] [c00000000c4e7880] [c0000000011cf7bc]
scsi_alloc_sgtables+0x11c/0x700
[ 1814.192601] [c00000000c4e7920] [c008000007097c08]
sd_setup_read_write_cmnd+0xf0/0xcd0 [sd_mod]
[ 1814.192651] [c00000000c4e7a20] [c0000000011d1ce4]
scsi_prepare_cmd+0x324/0x440
[ 1814.192683] [c00000000c4e7a90] [c0000000011d2128]
scsi_queue_rq+0x328/0xb00
[ 1814.192723] [c00000000c4e7b50] [c000000000cfad00]
blk_mq_dispatch_rq_list+0x270/0x9b0
[ 1814.192756] [c00000000c4e7c00] [c000000000d09100]
__blk_mq_do_dispatch_sched+0x580/0x5a0
[ 1814.192790] [c00000000c4e7cb0] [c000000000d09844]
__blk_mq_sched_dispatch_requests+0x2b4/0x360
[ 1814.192825] [c00000000c4e7d20] [c000000000d099e4]
blk_mq_sched_dispatch_requests+0x74/0x110
[ 1814.192857] [c00000000c4e7d60] [c000000000cef4e8]
blk_mq_run_work_fn+0xe8/0x120
[ 1814.192892] [c00000000c4e7da0] [c0000000002c0cac]
process_one_work+0x41c/0x8b0
[ 1814.192925] [c00000000c4e7eb0] [c0000000002c149c]
worker_thread+0x35c/0x780
[ 1814.192956] [c00000000c4e7f80] [c0000000002d4e14] kthread+0x214/0x230
[ 1814.192986] [c00000000c4e7fe0] [c00000000000ded8]
start_kernel_thread+0x14/0x18
[ 1814.193022] Code: 813a001c 39400001 71291000 40820014 387a007c
4bbed2d5 60000000 a15a007c 7c1b5000 39200001 39400000 7d29505e
<0b090000> e9410068 e92d0c78 7d4a4a79
[ 1814.193151] ---[ end trace 0000000000000000 ]---
[ 1814.193232] ------------[ cut here ]------------
[ 1814.193248] kernel BUG at drivers/scsi/scsi_lib.c:1173!
[ 1814.193266] Oops: Exception in kernel mode, sig: 5 [#1]
[ 1814.193284] LE PAGE_SIZE=64K MMU=Hash SMP NR_CPUS=8192 NUMA pSeries
[ 1814.193305] Modules linked in: bonding tls rfkill nft_fib_inet
nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4
nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_nat nf_conntrack
nf_defrag_ipv6 nf_defrag_ipv4 nf_tables sg pseries_rng vmx_crypto fuse
loop vsock_loopback vmw_vsock_virtio_transport_common vsock xfs nvme_tcp
nvme_fabrics nvme_core sr_mod sd_mod nvme_keyring cdrom nvme_auth hkdf
ibmvscsi ibmveth scsi_transport_srp dm_mirror dm_region_hash dm_log
dm_mod nfnetlink
[ 1814.193616] CPU: 46 UID: 0 PID: 253 Comm: kworker/46:0H Kdump: loaded
Tainted: G W 6.19.0-rc4-next-20260108 #1 VOLUNTARY
[ 1814.193650] Tainted: [W]=WARN
[ 1814.193664] Hardware name: IBM,8375-42A POWER9 (architected) 0x4e0202
0xf000005 of:IBM,FW950.80 (VL950_131) hv:phyp pSeries
[ 1814.193691] Workqueue: kblockd blk_mq_run_work_fn
[ 1814.193720] NIP: c0000000011cf9a0 LR: c0000000011cf988 CTR:
0000000000000000
[ 1814.193743] REGS: c00000000c4e75e0 TRAP: 0700 Tainted: G W
(6.19.0-rc4-next-20260108)
[ 1814.193766] MSR: 800000000282b033 <SF,VEC,VSX,EE,FP,ME,IR,DR,RI,LE>
CR: 84002202 XER: 20040000
[ 1814.193864] CFAR: c0000000008f2cf0 IRQMASK: 0
[ 1814.193864] GPR00: c0000000011cf7bc c00000000c4e7880 c0000000024ea800
c0000000dc53d2d0
[ 1814.193864] GPR04: c00000000c4e77f8 c00000000c4e77e8 c000000000d0490c
0000000000000000
[ 1814.193864] GPR08: 0000000000000001 0000000000000001 0000000000000000
c0080000070a18e8
[ 1814.193864] GPR12: c0000000011cf6a0 c000000011847300 c0000000002d4c08
c000000007cee280
[ 1814.193864] GPR16: c0000000d0c3e090 0000000000100001 c00000000ace1610
c0000000dc53d118
[ 1814.193864] GPR20: 0000000000010000 0000000000000000 c0000000dc53d12c
0000000000000002
[ 1814.193864] GPR24: c0000000dc53d2c8 0000000000000002 c0000000d0be4828
c0000000dc53d11c
[ 1814.193864] GPR28: c0000000dc53d100 c0000000dc53d2d0 c0000000d4315a90
c0000000dc53d200
[ 1814.194193] NIP [c0000000011cf9a0] scsi_alloc_sgtables+0x300/0x700
[ 1814.194218] LR [c0000000011cf988] scsi_alloc_sgtables+0x2e8/0x700
[ 1814.194241] Call Trace:
[ 1814.194253] [c00000000c4e7880] [c0000000011cf7bc]
scsi_alloc_sgtables+0x11c/0x700 (unreliable)
[ 1814.194289] [c00000000c4e7920] [c008000007097c08]
sd_setup_read_write_cmnd+0xf0/0xcd0 [sd_mod]
[ 1814.194335] [c00000000c4e7a20] [c0000000011d1ce4]
scsi_prepare_cmd+0x324/0x440
[ 1814.194367] [c00000000c4e7a90] [c0000000011d2128]
scsi_queue_rq+0x328/0xb00
[ 1814.194397] [c00000000c4e7b50] [c000000000cfad00]
blk_mq_dispatch_rq_list+0x270/0x9b0
[ 1814.194428] [c00000000c4e7c00] [c000000000d09100]
__blk_mq_do_dispatch_sched+0x580/0x5a0
[ 1814.194465] [c00000000c4e7cb0] [c000000000d09844]
__blk_mq_sched_dispatch_requests+0x2b4/0x360
[ 1814.194499] [c00000000c4e7d20] [c000000000d099e4]
blk_mq_sched_dispatch_requests+0x74/0x110
[ 1814.194532] [c00000000c4e7d60] [c000000000cef4e8]
blk_mq_run_work_fn+0xe8/0x120
[ 1814.194564] [c00000000c4e7da0] [c0000000002c0cac]
process_one_work+0x41c/0x8b0
[ 1814.194595] [c00000000c4e7eb0] [c0000000002c149c]
worker_thread+0x35c/0x780
[ 1814.194626] [c00000000c4e7f80] [c0000000002d4e14] kthread+0x214/0x230
[ 1814.194659] [c00000000c4e7fe0] [c00000000000ded8]
start_kernel_thread+0x14/0x18
[ 1814.194689] Code: 813f0110 7d295214 913f0110 3bbf00d0 7fa3eb78
4b723315 60000000 811f00d0 39400000 39200001 7c08b840 7d29501e
<0b090000> 7f63db78 92ff00d0 4b7232ed
[ 1814.194820] ---[ end trace 0000000000000000 ]---
[ 1814.216370] pstore: backend (nvram) writing error (-1)
Regards,
Venkat.
>
>
> Thanks,
> Ming
>
>
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