cfb_imageblit でカーネルパニックが発生する
Issue
- カーネルがパニックになり、以下のコールトレースが出力されます。
NMI Watchdog detected LOCKUP on CPU 11
CPU 11
Pid:85, comm: events/11 Not tainted 2.6.18-194.11.4.el5 #1
RIP:0010:[<ffffffff8017c8ec>] [<ffffffff8017c8ec>] cfb_imageblit+0x1a5/0x43f
RSP:0018:ffff81061f5bfac0 EFLAGS:00000006
RAX:000000000000ad55 RBX: ffff81061f201000 RCX:0000000000000000
RDX:000000000000005c RSI:000000000000000b RDI: ffffc2001024217c
RBP: ffff81061f29c313 R08:0000000000000000 R09:0000000000000000
R10:0000000000000002 R11: ffff81061f29c2fc R12:000000000000002f
R13: ffffc20010242000 R14: ffffffff8032df60 R15:00000000000000bc
FS:0000000000000000(0000) GS:ffff810c1fc27cc0(0000) knlGS:0000000000000000
CS:0010 DS:0018 ES:0018 CR0:000000008005003b
CR2:00000000096d95cc CR3:0000000000201000 CR4:00000000000006e0
Process events/11 (pid:85, threadinfo ffff81061f5be000, task ffff810c1f40f860)
Stack:0000000000000000 0000000000000000 ad55ad5500000000 0000000000000003
0000000000000000 0000000000000000 0000000000000000 0000000000000000
0000ad5500000000 ffff81000908f800 ffff81061f29c26f 00000000000001ff
Call Trace:
[<ffffffff80178168>] bit_putcs+0x42b/0x481
[<ffffffff80150790>] __next_cpu+0x19/0x28
[<ffffffff8017864e>] bit_cursor+0x490/0x4ac
[<ffffffff801733b6>] fbcon_putcs+0x20e/0x260
[<ffffffff80177d3d>] bit_putcs+0x0/0x481
[<ffffffff80174f3d>] fbcon_redraw+0xd3/0x169
[<ffffffff80173a98>] fbcon_cursor+0x227/0x25f
[<ffffffff801781be>] bit_cursor+0x0/0x4ac
[<ffffffff801768a0>] fbcon_scroll+0x5ab/0xb00
[<ffffffff801afe44>] scrup+0x5d/0xc0
[<ffffffff801afec3>] lf+0x1c/0x3a
[<ffffffff801b3fec>] vt_console_print+0x15a/0x227
[<ffffffff801775e2>] fb_flashcursor+0x0/0x293
[<ffffffff80091c0f>] __call_console_drivers+0x5b/0x69
[<ffffffff80017269>] release_console_sem+0x149/0x20e
[<ffffffff8004d6b3>] run_workqueue+0x94/0xe4
[<ffffffff80049eee>] worker_thread+0x0/0x122
[<ffffffff80049fde>] worker_thread+0xf0/0x122
[<ffffffff8008cf9d>] default_wake_function+0x0/0xe
[<ffffffff8003290a>] kthread+0xfe/0x132
[<ffffffff8005dfb1>] child_rip+0xa/0x11
[<ffffffff8003280c>] kthread+0x0/0x132
[<ffffffff8005dfa7>] child_rip+0x0/0x11
Code:45 85 c0 89 07 75 06 48 ff c5 41 b0 08 48 83 c7 04 ff ca 83
Environment
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 5
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