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SubjectBUG() in copy_fdtable() with 64K pages (2.6.19-rc1-mm1)
I keep hitting this on -rc1-mm1. The system comes up but I can't login
since login hits it.

Bisect says that fdtable-implement-new-pagesize-based-fdtable-allocator.patch is at fault.

CONFIG_PPC_64K_PAGES=y is required for it to fail, with 4K pages it's fine.

(Hardware is a Quad G5, 1GB RAM, g5_defconfig + CONFIG_PPC_64K_PAGES, defaults
on all new options)

kernel BUG in copy_fdtable at fs/file.c:138!
Oops: Exception in kernel mode, sig: 5 [#1]
Modules linked in: snd_pcm_oss snd_mixer_oss joydev snd_pcm snd_page_alloc snd_timer snd soundcore
NIP: C0000000000B926C LR: C0000000000B9210 CTR: C0000000000ADA34
REGS: c00000000f80ba60 TRAP: 0700 Not tainted (2.6.19-rc1-mm1)
MSR: 9000000000029032 <EE,ME,IR,DR> CR: 22002428 XER: 200FFFFF
TASK = c00000000fe38ba0[2022] 'dhclient-script' THREAD: c00000000f808000 CPU: 2
GPR00: 0000000000000001 C00000000F80BCE0 C0000000006CDCC8 C00000003F8CF880
GPR04: 00000000000000D0 0000000042002428 0000000000004000 000000000FEC1950
GPR08: C000000000585480 0000000000000000 C00000003FFD0480 C000000001E04200
GPR12: 100000000000F032 C000000000585480 0000000010000000 0000000010010000
GPR16: 0000000010002790 000000001001819D 00000000FCCDF818 0000000000000000
GPR20: 0000000000000000 00000000FCCDF828 0000000010018790 0000000010018760
GPR24: 00000000F7FDE6F0 C00000003F8CF800 0000000000000000 C00000003F8CF810
GPR28: 0000000000000040 0000000000000000 C0000000005B4B00 C00000000FB511C0
NIP [C0000000000B926C] .expand_files+0x1d4/0x34c
LR [C0000000000B9210] .expand_files+0x178/0x34c
Call Trace:
[C00000000F80BCE0] [C0000000000B91D0] .expand_files+0x138/0x34c (unreliable)
[C00000000F80BD90] [C0000000000ADAD8] .sys_dup2+0xa4/0x1ec
[C00000000F80BE30] [C00000000000871C] syscall_exit+0x0/0x40
Instruction dump:
60000000 4800000c 4bfd3609 60000000 7fe3fb78 4bfdf125 60000000 48000150
835f0000 7f9ae040 7c101026 5400effe <0b000000> 2fbc0000 419e00a4 7b9d1828

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