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Date: Tue, 30 Sep 2014 13:05:23 -0400
From: Valdis Kletnieks <Valdis.Kletnieks@...edu>
To: linux-kernel@...r.kernel.org
Subject: next-20140930 dies while trying to leave initramfs
Seeing a number of different tracebacks right around when the initramfs
is trying to pivot over to the real root. Out of 4 testing boots, I've seen
4 failures. next-20140922 runs fine. Anybody recognize this, before I
spend several hours bisecting?
Traceback 1 (Seen 3 times)
[ 37.243757] EXT4-fs (dm-2): mounted filesystem with ordered data mode. Opts: (null)
[ 37.500350] EXT4-fs (dm-1): mounted filesystem with ordered data mode. Opts: (null)
[ 37.553497] general protection fault: 0000 [#1] PREEMPT SMP
[ 37.553548] Modules linked in:
[ 37.553571] CPU: 1 PID: 274 Comm: systemd-udevd Not tainted 3.17.0-rc7-next-20140930-dirty #31
[ 37.553618] Hardware name: Dell Inc. Latitude E6530/07Y85M, BIOS A15 06/20/2014
[ 37.553659] task: ffff8800bd871810 ti: ffff88022241c000 task.ti: ffff88022241c000
[ 37.555308] RIP: 0010:[<ffffffffb5171d12>] [<ffffffffb5171d12>] atomic64_add_unless.constprop.3+0x10/0x7f
[ 37.557005] RSP: 0018:ffff88022241fdd8 EFLAGS: 00010296
[ 37.558648] RAX: ffff8800bd871801 RBX: 24a7ca3510f61eb3 RCX: 01ff88022241fef8
[ 37.560315] RDX: ffff8800bd871f58 RSI: 0000000000000000 RDI: 24a7ca3510f61e9b
[ 37.561951] RBP: ffff88022241fe08 R08: 0000000000000000 R09: 0000000000000000
[ 37.563597] R10: 0000000000000000 R11: 0000000000000000 R12: 24a7ca3510f61e9b
[ 37.565209] R13: ffff880224c2c1c0 R14: ffff8800bd871f58 R15: ffff88022241fef8
[ 37.566871] FS: 00007f0d39acb880(0000) GS:ffff88022dc80000(0000) knlGS:0000000000000000
[ 37.568524] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 37.570145] CR2: 00007fe11b400afc CR3: 0000000035c11000 CR4: 00000000001407e0
[ 37.571792] Stack:
[ 37.573431] ffff8800bd871f58 01ff88022241fef8 ffff880224c2c1c0 24a7ca3510f61eb3
[ 37.575113] 24a7ca3510f61e9b ffff880224c2c1c0 ffff88022241fe38 ffffffffb5171ede
[ 37.576784] 0000000000000000 ffff880224c2c1c0 0000000000000001 ffff880224c2c000
[ 37.578472] Call Trace:
[ 37.580080] [<ffffffffb5171ede>] mnt_pin_kill+0x37/0x51
[ 37.581703] [<ffffffffb5162485>] cleanup_mnt+0x83/0xc1
[ 37.583301] [<ffffffffb51624f9>] __cleanup_mnt+0xd/0xf
[ 37.584868] [<ffffffffb5059d42>] task_work_run+0x79/0xa6
[ 37.586456] [<ffffffffb50403fe>] do_exit+0x5f6/0xc74
[ 37.588028] [<ffffffffb50dd538>] ? time_hardirqs_off+0x1b/0x2f
[ 37.589626] [<ffffffffb507b45d>] ? trace_hardirqs_off_caller+0x4c/0xb9
[ 37.591229] [<ffffffffb56ba78d>] ? retint_swapgs+0xe/0x13
[ 37.592829] [<ffffffffb5041bab>] do_group_exit+0x63/0xe0
[ 37.594379] [<ffffffffb5041c37>] SyS_exit_group+0xf/0xf
[ 37.595919] [<ffffffffb56b9bd2>] system_call_fastpath+0x12/0x17
[ 37.597435] Code: b5 be 64 03 00 00 48 c7 c7 94 fc ad b5 c6 05 b1 68 b6 00 01 e8 c0 ab f0 ff c9 c3 55 48 89 e5 41 55 41 54 49 89 fc 53 48 83 ec 18
<48> 8b 1f 48 85 db 48 c7 c7 a8 86 d1 b5 41 0f 94 c5 31 d2 41 0f
[ 37.599302] RIP [<ffffffffb5171d12>] atomic64_add_unless.constprop.3+0x10/0x7f
[ 37.600963] RSP <ffff88022241fdd8>
[ 37.602657] ---[ end trace f3df00396480e702 ]---
Traceback 2 (seen once so far).
[ 15.467644] EXT4-fs (dm-2): mounted filesystem with ordered data mode. Opts: (null)
[ 15.706228] EXT4-fs (dm-1): mounted filesystem with ordered data mode. Opts: (null)
[ 15.745685] general protection fault: 0000 [#1] PREEMPT SMP
[ 15.745731] Modules linked in:
[ 15.745753] CPU: 2 PID: 272 Comm: systemd-udevd Not tainted 3.17.0-rc7-next-20140930-dirty #31
[ 15.745800] Hardware name: Dell Inc. Latitude E6530/07Y85M, BIOS A15 06/20/2014
[ 15.745839] task: ffff880222451ad0 ti: ffff880222474000 task.ti: ffff880222474000
[ 15.745878] RIP: 0010:[<ffffffffb0161a1c>] [<ffffffffb0161a1c>] mnt_add_count.isra.18+0x5/0x9
[ 15.747524] RSP: 0018:ffff880222477dc8 EFLAGS: 00010286
[ 15.749106] RAX: ffff880224c0d820 RBX: ffff88021b8cc9c0 RCX: 0000000000000028
[ 15.750715] RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffff88021b8cc9e0
[ 15.752337] RBP: ffff880222477dd8 R08: dead000000200200 R09: 0000000000000000
[ 15.753948] R10: ffffffffffffffed R11: ffffffffffffffec R12: ffff880222451ad0
[ 15.755565] R13: ffff880222452218 R14: 0000000000000000 R15: ffff880222477ef8
[ 15.757130] FS: 0000000000000000(0000) GS:ffff88022dd00000(0000) knlGS:0000000000000000
[ 15.758757] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 15.760367] CR2: 00007fcd21224148 CR3: 0000000030c11000 CR4: 00000000001407e0
[ 15.762000] Stack:
[ 15.763605] ffffffffb0161a3b ffff880224c0d800 ffff880222477e08 ffffffffb01629a9
[ 15.765250] ffff880224c0d820 ffff8802233ff180 ffff880222477e08 ffff880224c0d820
[ 15.766888] ffff880222477e28 ffffffffb0163e6f ffff880224c0d800 ffff88022302a880
[ 15.768528] Call Trace:
[ 15.770134] [<ffffffffb0161a3b>] ? mntget+0x1b/0x21
[ 15.771746] [<ffffffffb01629a9>] namespace_unlock+0x6d/0xbc
[ 15.773304] [<ffffffffb0163e6f>] drop_collected_mounts+0x28/0x2c
[ 15.774845] [<ffffffffb0164f98>] put_mnt_ns+0x1c/0x30
[ 15.776386] [<ffffffffb005bf27>] free_nsproxy+0x17/0x65
[ 15.777925] [<ffffffffb005c06e>] switch_task_namespaces+0x60/0x69
[ 15.779483] [<ffffffffb005c082>] exit_task_namespaces+0xb/0xd
[ 15.781013] [<ffffffffb00403f9>] do_exit+0x5f1/0xc74
[ 15.782585] [<ffffffffb00dd538>] ? time_hardirqs_off+0x1b/0x2f
[ 15.784135] [<ffffffffb007b45d>] ? trace_hardirqs_off_caller+0x4c/0xb9
[ 15.785679] [<ffffffffb06ba78d>] ? retint_swapgs+0xe/0x13
[ 15.787152] [<ffffffffb0041bab>] do_group_exit+0x63/0xe0
[ 15.788664] [<ffffffffb0041c37>] SyS_exit_group+0xf/0xf
[ 15.790122] [<ffffffffb06b9bd2>] system_call_fastpath+0x12/0x17
[ 15.791627] Code: 92 c4 b0 e8 fa 49 12 00 39 1d 71 c9 c1 01 7e 06 89 1d 69 c9 c1 01 48 c7 c7 d0 91 c4 b0 e8 5b 74 55 00 58 5b 5d c3 55 48 89 e5 5d
<65> 01 37 c3 55 48 85 ff 48 89 e5 53 48 89 fb 74 0e 48 8b 7f 28
[ 15.793422] RIP [<ffffffffb0161a1c>] mnt_add_count.isra.18+0x5/0x9
[ 15.795076] RSP <ffff880222477dc8>
[ 15.796766] ---[ end trace 80ef64c1c9a84aca ]---
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