PWN-Hunter/android_kernel_xiaomi_sdm845
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76baeebf7d
android_kernel_xiaomi_sdm845/arch/x86
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Jesse Barnes 76baeebf7d x86/PCI: make 32 bit NUMA node array int, not unsigned char 
We use -1 to indicate no node affinity, so we need a signed type here or
all sorts of bad things happen, like crashes in dev_attr_show as
reported by Ingo:

[  158.058140] warning: `dbus-daemon' uses 32-bit capabilities (legacy support in use)
[  159.370562] BUG: unable to handle kernel NULL pointer dereference at (null)
[  159.372694] IP: [<ffffffff8143b722>] bitmap_scnprintf+0x72/0xd0
[  159.372694] PGD 71d3e067 PUD 7052e067 PMD 0
[  159.372694] Oops: 0000 [#1] SMP DEBUG_PAGEALLOC
[  159.372694] last sysfs file: /sys/devices/pci0000:00/0000:00:01.0/local_cpus
[  159.372694] CPU 0
[  159.372694] Pid: 7364, comm: irqbalance Not tainted 2.6.31-tip #8043 System Product Name
[  159.372694] RIP: 0010:[<ffffffff8143b722>]  [<ffffffff8143b722>] bitmap_scnprintf+0x72/0xd0
[  159.372694] RSP: 0018:ffff8800712a1e38  EFLAGS: 00010246
[  159.372694] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[  159.372694] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff880077dc5000
[  159.372694] RBP: ffff8800712a1e68 R08: 0000000000000001 R09: 0000000000000001
[  159.372694] R10: ffffffff8215c47c R11: 0000000000000000 R12: 0000000000000000
[  159.372694] R13: 0000000000000000 R14: 0000000000000ffe R15: ffff880077dc5000
[  159.372694] FS:  00007f5f578f76f0(0000) GS:ffff880007000000(0000) knlGS:0000000000000000
[  159.372694] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[  159.372694] CR2: 0000000000000000 CR3: 0000000071a77000 CR4: 00000000000006f0
[  159.372694] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  159.372694] DR3: ffffffff835109dc DR6: 00000000ffff0ff0 DR7: 0000000000000400
[  159.372694] Process irqbalance (pid: 7364, threadinfo ffff8800712a0000, task ffff880070773000)
[  159.372694] Stack:
[  159.372694]  2222222222222222 ffff880077dc5000 fffffffffffffffb ffff88007d366b40
[  159.372694] <0> ffff8800712a1f48 ffff88007d3840a0 ffff8800712a1e88 ffffffff8146332b
[  159.372694] <0> fffffffffffffff4 ffffffff82450718 ffff8800712a1ea8 ffffffff815a9a1f
[  159.372694] Call Trace:
[  159.372694]  [<ffffffff8146332b>] local_cpus_show+0x3b/0x60
[  159.372694]  [<ffffffff815a9a1f>] dev_attr_show+0x2f/0x60
[  159.372694]  [<ffffffff8118ee6f>] sysfs_read_file+0xbf/0x1d0
[  159.372694]  [<ffffffff8112afe9>] vfs_read+0xc9/0x180
[  159.372694]  [<ffffffff8112c365>] sys_read+0x55/0x90
[  159.372694]  [<ffffffff810114f2>] system_call_fastpath+0x16/0x1b
[  159.372694] Code: 41 b9 01 00 00 00 44 8d 46 03 49 63 fc 0f 49 d3 c1 f8 1f 4c 01 ff c1 e8 1a c1 fa 06 41 c1 e8 02 8d 0c 03 48 63 d2 83 e1 3f 29 c1 <49> 8b 44 d5 00 48 c7 c2 8c 37 16 82 48 d3 e8 89 f1 44 89 f6 49
[  159.372694] RIP  [<ffffffff8143b722>] bitmap_scnprintf+0x72/0xd0
[  159.372694]  RSP <ffff8800712a1e38>
[  159.372694] CR2: 0000000000000000
[  159.600828] ---[ end trace 35550c356e84e60c ]---

Reported-by: Ingo Molnar <mingo@elte.hu>
Tested-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-09-18 09:13:57 -07:00
..
boot Merge branch 'x86-setup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-09-14 08:01:47 -07:00
configs tracing: Rename FTRACE_SYSCALLS for tracepoints 2009-08-26 00:17:35 +02:00
crypto Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-09-14 07:57:32 -07:00
ia32 x86, 32-bit: Use generic sys_pipe() 2009-08-08 18:20:52 +02:00
include/asm x86/PCI: default pcibus cpumask to all cpus if it lacks affinity 2009-09-18 08:51:10 -07:00
kernel Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 2009-09-16 07:49:54 -07:00
kvm Merge branch 'kvm-updates/2.6.32' of git://git.kernel.org/pub/scm/virt/kvm/kvm 2009-09-14 17:43:43 -07:00
lguest lguest: update commentry 2009-07-30 16:03:46 +09:30
lib x86, msr: change msr-reg.o to obj-y, and export its symbols 2009-09-04 10:00:09 -07:00
math-emu Merge branch 'core/percpu' into percpu-cpumask-x86-for-linus-2 2009-03-27 17:28:43 +01:00
mm Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu 2009-09-15 09:39:44 -07:00
oprofile arch/x86/oprofile/op_model_amd.c: fix op_amd_handle_ibs() return type 2009-08-04 16:02:01 +02:00
pci x86/PCI: make 32 bit NUMA node array int, not unsigned char 2009-09-18 09:13:57 -07:00
power Merge branch 'x86/urgent' into x86/pat 2009-08-26 17:24:28 -07:00
vdso gcov: enable GCOV_PROFILE_ALL for x86_64 2009-06-18 13:03:58 -07:00
video
xen Merge branch 'x86-xen-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-09-14 10:23:49 -07:00
Kbuild x86: standardize Kbuild rules 2009-04-16 18:09:02 +02:00
Kconfig Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu 2009-09-15 09:39:44 -07:00
Kconfig.cpu x86: add specific support for Intel Atom architecture 2009-08-23 11:20:02 +02:00
Kconfig.debug kmemcheck: make kconfig accessible for other architectures 2009-06-15 15:49:17 +02:00
Makefile Merge branch 'x86-kbuild-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-09-14 07:59:07 -07:00
Makefile_32.cpu x86: add specific support for Intel Atom architecture 2009-08-23 11:20:02 +02:00