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Date: Thu, 30 Nov 2017 10:21:15 +0800
From: Fengguang Wu <fengguang.wu@...el.com>
To: linux-btrfs@...r.kernel.org
Cc: Chris Mason <clm@...com>, Josef Bacik <jbacik@...com>,
David Sterba <dsterba@...e.com>,
Linus Torvalds <torvalds@...ux-foundation.org>,
Jeff Mahoney <jeffm@...e.com>,
David Howells <dhowells@...hat.com>,
Liu Bo <bo.li.liu@...cle.com>, Petr Mladek <pmladek@...e.com>,
Nick Terrell <terrelln@...com>,
Hans van Kranenburg <hans.van.kranenburg@...dix.com>,
linux-kernel@...r.kernel.org, lkp@...org
Subject: [btrfs_mount] general protection fault: 0000 [#1] SMP
Hello,
FYI this happens in mainline kernel 4.15.0-rc1.
It looks like a new regression. Bisect is in progress.
It occurs in 11 out of 11 xfstests run.
[ 1456.361614]
[ 1456.918942] BTRFS info (device vdb): disk space caching is enabled
[ 1456.920760] BTRFS info (device vdb): has skinny extents
[ 1457.111319] run fstests btrfs/094 at 2017-11-28 09:46:30
[ 1457.702513] BTRFS: device fsid 5c26b547-822d-4338-be92-b2ec5f6b159d devid 1 transid 5 /dev/vdb
[ 1457.920372] general protection fault: 0000 [#1] SMP
[ 1457.921693] Modules linked in: dm_flakey btrfs xor zstd_decompress zstd_compress xxhash raid6_pq dm_mod rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver sr_mod cdrom sg ata_generic pata_acpi ppdev snd_pcm snd_timer snd soundcore pcspkr serio_raw ata_piix i2c_piix4 libata parport_pc floppy parport ip_tables
[ 1457.927395] CPU: 3 PID: 19563 Comm: mount Not tainted 4.15.0-rc1 #1
[ 1457.928804] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[ 1457.930815] task: ffff880078f8ca00 task.stack: ffffc90004828000
[ 1457.934242] RIP: 0010:btrfs_compress_str2level+0x17/0x50 [btrfs]
[ 1457.936653] RSP: 0018:ffffc9000482baa8 EFLAGS: 00010202
[ 1457.938909] RAX: 0000000000000001 RBX: ffffffffa057967f RCX: 0000000000000004
[ 1457.942574] RDX: 1ffff92000905763 RSI: 1ffff92000905763 RDI: ffffffffa057bc24
[ 1457.946221] RBP: ffffc9000482bb40 R08: 0000000000000063 R09: ffff88007e8257a8
[ 1457.948982] R10: 000000000000002c R11: ffffffff81a6a340 R12: ffff8800750b0000
[ 1457.952494] R13: ffff88007e8257a0 R14: 0000000000000000 R15: 0000000000001000
[ 1457.956106] FS: 00007fb80717d840(0000) GS:ffff88013fd80000(0000) knlGS:0000000000000000
[ 1457.960103] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1457.962466] CR2: 00000000010b6f88 CR3: 00000000750ce000 CR4: 00000000000006e0
[ 1457.966100] Call Trace:
[ 1457.966851] btrfs_parse_options+0x96f/0xf20 [btrfs]
[ 1457.970107] ? open_ctree+0x1041/0x2410 [btrfs]
[ 1457.971638] open_ctree+0x1041/0x2410 [btrfs]
[ 1457.973780] btrfs_mount+0xcfa/0xe40 [btrfs]
[ 1457.975889] ? pcpu_alloc_area+0xc0/0x130:
pcpu_alloc_area at mm/percpu.c:1010
[ 1457.979028] ? pcpu_next_unpop+0x37/0x50:
pcpu_next_unpop at mm/percpu.c:264
[ 1457.981051] ? pcpu_alloc+0x2e1/0x650:
pcpu_alloc at mm/percpu.c:1472 (discriminator 1)
[ 1457.983074] mount_fs+0x36/0x140:
mount_fs at fs/super.c:1220
[ 1457.983941] vfs_kern_mount+0x62/0x130:
vfs_kern_mount at fs/namespace.c:1038
[ 1457.985951] btrfs_mount+0x183/0xe40 [btrfs]
[ 1457.989441] ? pcpu_alloc_area+0xc0/0x130:
pcpu_alloc_area at mm/percpu.c:1010
[ 1457.991495] ? pcpu_next_unpop+0x37/0x50:
pcpu_next_unpop at mm/percpu.c:264
[ 1457.993524] ? pcpu_alloc+0x2e1/0x650:
pcpu_alloc at mm/percpu.c:1472 (discriminator 1)
[ 1457.995502] mount_fs+0x36/0x140:
mount_fs at fs/super.c:1220
[ 1457.997415] vfs_kern_mount+0x62/0x130:
vfs_kern_mount at fs/namespace.c:1038
[ 1457.999537] do_mount+0x1d5/0xc90:
do_new_mount at fs/namespace.c:2513
(inlined by) do_mount at fs/namespace.c:2841
[ 1458.001440] ? kmem_cache_alloc_trace+0x16d/0x1c0:
slab_pre_alloc_hook at mm/slab.h:419
(inlined by) slab_alloc_node at mm/slub.c:2651
(inlined by) slab_alloc at mm/slub.c:2733
(inlined by) kmem_cache_alloc_trace at mm/slub.c:2750
[ 1458.003603] ? copy_mount_options+0x28/0x240:
copy_mount_options at fs/namespace.c:2722
[ 1458.005698] SyS_mount+0x7e/0xd0
[ 1458.007597] entry_SYSCALL_64_fastpath+0x1a/0x7d:
entry_SYSCALL_64_fastpath at arch/x86/entry/entry_64.S:210
[ 1458.009808] RIP: 0033:0x7fb80683c98a
[ 1458.011835] RSP: 002b:00007fffac136bc8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
[ 1458.015803] RAX: ffffffffffffffda RBX: 00007fb806d57507 RCX: 00007fb80683c98a
[ 1458.019432] RDX: 00000000010b4260 RSI: 00000000010b42e0 RDI: 00000000010b42c0
[ 1458.023055] RBP: 00000000010b4140 R08: 00000000010b4280 R09: 0000000000000021
[ 1458.025659] R10: 00000000c0ed0000 R11: 0000000000000202 R12: 00007fb806f65e44
[ 1458.029307] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000005
[ 1458.031933] Code: 83 e3 05 e9 26 fe ff ff 31 db e9 1f fe ff ff 0f 1f 44 00 00 0f 1f 44 00 00 48 89 fa b9 04 00 00 00 48 c7 c7 24 bc 57 a0 48 89 d6 <f3> a6 40 0f 97 c6 0f 92 c1 31 c0 40 38 ce 75 06 80 7a 04 3a 74
[ 1458.041233] RIP: btrfs_compress_str2level+0x17/0x50 [btrfs] RSP: ffffc9000482baa8
[ 1458.045201] ---[ end trace e67558e75fd9eba6 ]---
[ 1458.066398] Kernel panic - not syncing: Fatal exception
Attached the full dmesg, kconfig and reproduce scripts.
Thanks,
Fengguang
View attachment "dmesg-vm-kbuild-4G-1:20171128094640:x86_64-rhel-7.2:4.15.0-rc1:1" of type "text/plain" (299827 bytes)
View attachment ".config" of type "text/plain" (164488 bytes)
View attachment "job-script" of type "text/plain" (4623 bytes)
View attachment "reproduce-vm-kbuild-4G-1:20171128094640:x86_64-rhel-7.2:4.15.0-rc1:1" of type "text/plain" (2973 bytes)
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