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Additions and removal from tty_drivers list were just done as well as
iterating on it for /proc/tty/drivers generation.
testing: modprobe/rmmod loop of simple module which does nothing but
tty_register_driver() vs cat /proc/tty/drivers loop
BUG: unable to handle kernel paging request at virtual address 6b6b6b6b
printing eip:
c01cefa7
*pde = 00000000
Oops: 0000 [#1]
PREEMPT
last sysfs file: devices/pci0000:00/0000:00:1d.7/usb5/5-0:1.0/bInterfaceProtocol
Modules linked in: ohci_hcd af_packet e1000 ehci_hcd uhci_hcd usbcore xfs
CPU: 0
EIP: 0060:[<c01cefa7>] Not tainted VLI
EFLAGS: 00010297 (2.6.21-rc4-mm1 #4)
EIP is at vsnprintf+0x3a4/0x5fc
eax: 6b6b6b6b ebx: f6cb50f2 ecx: 6b6b6b6b edx: fffffffe
esi: c0354700 edi: f6cb6000 ebp: 6b6b6b6b esp: f31f5e68
ds: 007b es: 007b fs: 00d8 gs: 0033 ss: 0068
Process cat (pid: 31864, ti=f31f4000 task=c1998030 task.ti=f31f4000)
Stack: 00000000 c0103f20 c013003a c0103f20 00000000 f6cb50da 0000000a 00000f0e
f6cb50f2 00000010 00000014 ffffffff ffffffff 00000007 c0354753 f6cb50f2
f73e39dc f73e39dc 00000001 c0175416 f31f5ed8 f31f5ed4 0ee00000 f32090bc
Call Trace:
[<c0103f20>] restore_nocheck+0x12/0x15
[<c013003a>] mark_held_locks+0x6d/0x86
[<c0103f20>] restore_nocheck+0x12/0x15
[<c0175416>] seq_printf+0x2e/0x52
[<c0192895>] show_tty_range+0x35/0x1f3
[<c0175416>] seq_printf+0x2e/0x52
[<c0192add>] show_tty_driver+0x8a/0x1d9
[<c01758f6>] seq_read+0x70/0x2ba
[<c0175886>] seq_read+0x0/0x2ba
[<c018d8e6>] proc_reg_read+0x63/0x9f
[<c015e764>] vfs_read+0x7d/0xb5
[<c018d883>] proc_reg_read+0x0/0x9f
[<c015eab1>] sys_read+0x41/0x6a
[<c0103e4e>] sysenter_past_esp+0x5f/0x99
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Code: 00 8b 4d 04 e9 44 ff ff ff 8d 4d 04 89 4c 24 50 8b 6d 00 81 fd ff 0f 00 00 b8 a4 c1 35 c0 0f 46 e8 8b 54 24 2c 89 e9 89 c8 eb 06 <80> 38 00 74 07 40 4a 83 fa ff 75 f4 29 c8 89 c6 8b 44 24 28 89
EIP: [<c01cefa7>] vsnprintf+0x3a4/0x5fc SS:ESP 0068:f31f5e68
Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Many struct file_operations in the kernel can be "const". Marking them const
moves these to the .rodata section, which avoids false sharing with potential
dirty data. In addition it'll catch accidental writes at compile time to
these shared resources.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
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