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Date: Mon, 26 Jan 2015 11:08:21 +0800
From: Huang Ying <ying.huang@...el.com>
To: Al Viro <viro@...iv.linux.org.uk>
Cc: LKML <linux-kernel@...r.kernel.org>, LKP ML <lkp@...org>
Subject: [LKP] [debugfs] kernel BUG at fs/debugfs/inode.c:319!
FYI, we noticed the below changes on
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git debugfs_automount
commit db2242aa4d4ffd5a3b8b27cd99766f33e6445f59 ("debugfs: kill __create_file()")
+------------------------------------------+------------+------------+
| | 190afd81e4 | db2242aa4d |
+------------------------------------------+------------+------------+
| boot_successes | 20 | 0 |
| early-boot-hang | 1 | |
| boot_failures | 0 | 10 |
| kernel_BUG_at_fs/debugfs/inode.c | 0 | 10 |
| invalid_opcode | 0 | 10 |
| RIP:debugfs_create_file | 0 | 10 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 10 |
| backtrace:regulator_init | 0 | 10 |
| backtrace:kernel_init_freeable | 0 | 10 |
+------------------------------------------+------------+------------+
[ 1.234536] atomic64_test: passed for x86-64 platform with CX8 and with SSE
[ 1.235948] ------------[ cut here ]------------
[ 1.235948] ------------[ cut here ]------------
[ 1.236666] kernel BUG at fs/debugfs/inode.c:319!
[ 1.236666] kernel BUG at fs/debugfs/inode.c:319!
[ 1.236666] invalid opcode: 0000 [#1]
[ 1.236666] invalid opcode: 0000 [#1] DEBUG_PAGEALLOCDEBUG_PAGEALLOC
[ 1.236666] CPU: 0 PID: 1 Comm: swapper Not tainted 3.19.0-rc5-00101-g2e2fd81 #35
[ 1.236666] CPU: 0 PID: 1 Comm: swapper Not tainted 3.19.0-rc5-00101-g2e2fd81 #35
[ 1.236666] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1.236666] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1.236666] task: ffff8800134ca000 ti: ffff8800134cc000 task.ti: ffff8800134cc000
[ 1.236666] task: ffff8800134ca000 ti: ffff8800134cc000 task.ti: ffff8800134cc000
[ 1.236666] RIP: 0010:[<ffffffff8127384e>]
[ 1.236666] RIP: 0010:[<ffffffff8127384e>] [<ffffffff8127384e>] debugfs_create_file+0x26/0x120
[<ffffffff8127384e>] debugfs_create_file+0x26/0x120
[ 1.236666] RSP: 0000:ffff8800134cfe58 EFLAGS: 00010203
[ 1.236666] RSP: 0000:ffff8800134cfe58 EFLAGS: 00010203
[ 1.236666] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 1.236666] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 1.236666] RDX: ffff880013531000 RSI: 0000000000000124 RDI: ffffffff81c41562
[ 1.236666] RDX: ffff880013531000 RSI: 0000000000000124 RDI: ffffffff81c41562
[ 1.236666] RBP: ffff8800134cfe78 R08: ffffffff81845200 R09: 0000000000000000
[ 1.236666] RBP: ffff8800134cfe78 R08: ffffffff81845200 R09: 0000000000000000
[ 1.236666] R10: ffff8800134cfde8 R11: 0000000000000009 R12: 0000000000000124
[ 1.236666] R10: ffff8800134cfde8 R11: 0000000000000009 R12: 0000000000000124
[ 1.236666] R13: 0000000000000000 R14: ffffffff821bb910 R15: 0000000000000000
[ 1.236666] R13: 0000000000000000 R14: ffffffff821bb910 R15: 0000000000000000
[ 1.236666] FS: 0000000000000000(0000) GS:ffffffff81cfd000(0000) knlGS:0000000000000000
[ 1.236666] FS: 0000000000000000(0000) GS:ffffffff81cfd000(0000) knlGS:0000000000000000
[ 1.236666] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 1.236666] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 1.236666] CR2: 00000000ffffffff CR3: 0000000001cda000 CR4: 00000000000006b0
[ 1.236666] CR2: 00000000ffffffff CR3: 0000000001cda000 CR4: 00000000000006b0
[ 1.236666] Stack:
[ 1.236666] Stack:
[ 1.236666] 0000000000000000
[ 1.236666] 0000000000000000 ffffffff8214edaa ffffffff8214edaa 0000000000000000 0000000000000000 ffffffff821bb910 ffffffff821bb910
[ 1.236666] ffff8800134cfe98
[ 1.236666] ffff8800134cfe98 ffffffff8214ee2f ffffffff8214ee2f ffff8800134ca6d0 ffff8800134ca6d0 ffff880013532470 ffff880013532470
[ 1.236666] ffff8800134cff08
[ 1.236666] ffff8800134cff08 ffffffff8210f79d ffffffff8210f79d 0000000000001100 0000000000001100 0000000000000078 0000000000000078
[ 1.236666] Call Trace:
[ 1.236666] Call Trace:
[ 1.236666] [<ffffffff8214edaa>] ? ftrace_define_fields_regulator_basic+0x3b/0x3b
[ 1.236666] [<ffffffff8214edaa>] ? ftrace_define_fields_regulator_basic+0x3b/0x3b
[ 1.236666] [<ffffffff8214ee2f>] regulator_init+0x85/0x9e
[ 1.236666] [<ffffffff8214ee2f>] regulator_init+0x85/0x9e
[ 1.236666] [<ffffffff8210f79d>] do_one_initcall+0x18e/0x262
[ 1.236666] [<ffffffff8210f79d>] do_one_initcall+0x18e/0x262
[ 1.236666] [<ffffffff8210fa3f>] kernel_init_freeable+0x1ce/0x2c4
[ 1.236666] [<ffffffff8210fa3f>] kernel_init_freeable+0x1ce/0x2c4
[ 1.236666] [<ffffffff81768be7>] ? rest_init+0x155/0x155
[ 1.236666] [<ffffffff81768be7>] ? rest_init+0x155/0x155
[ 1.236666] [<ffffffff81768bfc>] kernel_init+0x15/0x16e
[ 1.236666] [<ffffffff81768bfc>] kernel_init+0x15/0x16e
[ 1.236666] [<ffffffff81778f7a>] ret_from_fork+0x7a/0xb0
[ 1.236666] [<ffffffff81778f7a>] ret_from_fork+0x7a/0xb0
[ 1.236666] [<ffffffff81768be7>] ? rest_init+0x155/0x155
[ 1.236666] [<ffffffff81768be7>] ? rest_init+0x155/0x155
[ 1.236666] Code:
[ 1.236666] Code: 5c 5c 41 41 5d 5d 5d 5d c3 c3 66 66 66 66 66 66 66 66 90 90 89 89 f0 f0 55 55 66 66 25 25 00 00 f0 f0 66 66 3d 3d 00 00 80 80 48 48 89 89 e5 e5 41 41 56 56 41 41 55 55 41 41 54 54 41 41 89 89 f4 f4 53 53 74 74 10 10 48 48 ff ff 05 05 72 72 d9 d9 b3 b3 01 01 <0f> <0f> 0b 0b 48 48 ff ff 05 05 79 79 d9 d9 b3 b3 01 01 48 48 89 89 d6 d6 48 48 ff ff 05 05 67 67 d9 d9 b3 b3 01 01 49 49 89 89
[ 1.236666] RIP
[ 1.236666] RIP [<ffffffff8127384e>] debugfs_create_file+0x26/0x120
[<ffffffff8127384e>] debugfs_create_file+0x26/0x120
[ 1.236666] RSP <ffff8800134cfe58>
[ 1.236666] RSP <ffff8800134cfe58>
[ 1.236675] ---[ end trace 9d055054b093e3d6 ]---
[ 1.236675] ---[ end trace 9d055054b093e3d6 ]---
Thanks,
Huang, Ying
View attachment "config-3.19.0-rc5-00003-gdb2242a" of type "text/plain" (68432 bytes)
View attachment ".dmesg" of type "text/plain" (51616 bytes)
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