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** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1709073
Title:
[SRU][ZESTY]kernel BUG at /build/linux-
H5UzH8/linux-4.10.0/drivers/nvme/host/pci.c:567!
Status in linux package in Ubuntu:
Incomplete
Bug description:
SRU Justification:
Impact: reliably reproducible kernel BUG_ON leading to complete system hang
Fix: cherry-pick upstream followup commit
Testcase: mkfs.btrfs on Samsung SM/PM961 no longer triggers the BUG_ON
Detailed description:
the fix for http://bugs.launchpad.net/bugs/1657539 which cherry-picked
729204ef49ec00b788ce23deb9eb922a5769f55d block: relax check on sg gap
is missing a follow-up fix commit
5a8d75a1b8c99bdc926ba69b7b7dbe4fae81a5af block: fix bio_will_gap() for
first bvec with offset
without, the following BUG_ON is triggered using a mkfs.btrfs
/dev/nvme0n1 on a Samsung SM961/PM961 M.2 device:
Aug 07 09:19:09 ubuntu kernel: kernel BUG at
/build/linux-H5UzH8/linux-4.10.0/drivers/nvme/host/pci.c:567!
Aug 07 09:19:09 ubuntu kernel: invalid opcode: 0000 [#1] SMP
Aug 07 09:19:09 ubuntu kernel: Modules linked in: nls_iso8859_1 ppdev
snd_hda_intel snd_hda_codec snd_hda_core joydev snd_hwdep snd_pcm snd_ti
Aug 07 09:19:09 ubuntu kernel: CPU: 0 PID: 2071 Comm: mkfs.btrfs Not tainted
4.10.0-30-generic #34-Ubuntu
Aug 07 09:19:09 ubuntu kernel: Hardware name: QEMU Standard PC (Q35 + ICH9,
2009), BIOS 0.0.0 02/06/2015
Aug 07 09:19:09 ubuntu kernel: task: ffff8e537417bfc0 task.stack:
ffffb580c1698000
Aug 07 09:19:09 ubuntu kernel: RIP: 0010:nvme_queue_rq+0x746/0x8e0 [nvme]
Aug 07 09:19:09 ubuntu kernel: RSP: 0018:ffffb580c169b950 EFLAGS: 00010286
Aug 07 09:19:09 ubuntu kernel: RAX: 0000000000000078 RBX: 00000000fffffa00
RCX: 0000000000001000
Aug 07 09:19:09 ubuntu kernel: RDX: 0000000000000010 RSI: 0000000000000200
RDI: 0000000000000246
Aug 07 09:19:09 ubuntu kernel: RBP: ffffb580c169ba28 R08: ffff8e53733cb000
R09: 000000000000fa00
Aug 07 09:19:09 ubuntu kernel: R10: 0000000000001000 R11: ffff8e53733d0000
R12: 0000000273a8a000
Aug 07 09:19:09 ubuntu kernel: R13: 000000000002fc00 R14: ffff8e53733cb000
R15: 0000000000000200
Aug 07 09:19:09 ubuntu kernel: FS: 00007f92511ba080(0000)
GS:ffff8e537fc00000(0000) knlGS:0000000000000000
Aug 07 09:19:09 ubuntu kernel: CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
Aug 07 09:19:09 ubuntu kernel: CR2: 00007ffeecdc9000 CR3: 0000000274323000
CR4: 00000000000006f0
Aug 07 09:19:09 ubuntu kernel: DR0: 0000000000000000 DR1: 0000000000000000
DR2: 0000000000000000
Aug 07 09:19:09 ubuntu kernel: DR3: 0000000000000000 DR6: 00000000fffe0ff0
DR7: 0000000000000400
Aug 07 09:19:09 ubuntu kernel: Call Trace:
Aug 07 09:19:09 ubuntu kernel: blk_mq_try_issue_directly+0x7e/0x100
Aug 07 09:19:09 ubuntu kernel: blk_mq_make_request+0x3cf/0x4e0
Aug 07 09:19:09 ubuntu kernel: generic_make_request+0x110/0x2d0
Aug 07 09:19:09 ubuntu kernel: submit_bio+0x73/0x150
Aug 07 09:19:09 ubuntu kernel: ? __percpu_counter_add+0x4f/0x60
Aug 07 09:19:09 ubuntu kernel: submit_bh_wbc+0x152/0x180
Aug 07 09:19:09 ubuntu kernel: __block_write_full_page+0x176/0x360
Aug 07 09:19:09 ubuntu kernel: ? I_BDEV+0x20/0x20
Aug 07 09:19:09 ubuntu kernel: ? I_BDEV+0x20/0x20
Aug 07 09:19:09 ubuntu kernel: block_write_full_page+0x13b/0x160
Aug 07 09:19:09 ubuntu kernel: blkdev_writepage+0x18/0x20
Aug 07 09:19:09 ubuntu kernel: __writepage+0x13/0x30
Aug 07 09:19:09 ubuntu kernel: write_cache_pages+0x205/0x530
Aug 07 09:19:09 ubuntu kernel: ? wb_position_ratio+0x1f0/0x1f0
Aug 07 09:19:09 ubuntu kernel: generic_writepages+0x56/0x90
Aug 07 09:19:09 ubuntu kernel: blkdev_writepages+0x2f/0x40
Aug 07 09:19:09 ubuntu kernel: do_writepages+0x1e/0x30
Aug 07 09:19:09 ubuntu kernel: __filemap_fdatawrite_range+0xc6/0x100
Aug 07 09:19:09 ubuntu kernel: SyS_fadvise64+0x25e/0x290
Aug 07 09:19:09 ubuntu kernel: entry_SYSCALL_64_fastpath+0x1e/0xad
Aug 07 09:19:09 ubuntu kernel: RIP: 0033:0x7f925066debd
Aug 07 09:19:09 ubuntu kernel: RSP: 002b:00007ffeecd46a38 EFLAGS: 00000246
ORIG_RAX: 00000000000000dd
Aug 07 09:19:09 ubuntu kernel: RAX: ffffffffffffffda RBX: 00007ffeecd45a30
RCX: 00007f925066debd
Aug 07 09:19:09 ubuntu kernel: RDX: 0000000000000000 RSI: 0000000000000000
RDI: 0000000000000004
Aug 07 09:19:09 ubuntu kernel: RBP: 0000000000000000 R08: 0000000000000000
R09: 0000000000001001
Aug 07 09:19:09 ubuntu kernel: R10: 0000000000000004 R11: 0000000000000246
R12: 0000000000000010
Aug 07 09:19:09 ubuntu kernel: R13: 00007ffeecd45a40 R14: 0000000000000004
R15: 0000000000000000
Aug 07 09:19:09 ubuntu kernel: Code: f1 61 26 d5 8b 95 48 ff ff ff 48 89 85
60 ff ff ff 4c 8b 50 10 44 8b 48 18 8b 8d 50 ff ff ff 44 8b 9d 58
Aug 07 09:19:09 ubuntu kernel: RIP: nvme_queue_rq+0x746/0x8e0 [nvme] RSP:
ffffb580c169b950
LKML reference: https://lkml.org/lkml/2017/4/13/105
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