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| author | Tkhai Kirill <tkhai@yandex.ru> | 2013-02-23 23:01:15 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-03-01 13:31:36 -0800 |
| commit | cb29529ea0030e60ef1bbbf8399a43d397a51526 (patch) | |
| tree | f7555f191e44e204989a06dfe021fce08403c551 /arch/sparc/kernel/leon_pci_grpci2.c | |
| parent | b0af9cd9aab60ceb17d3ebabb9fdf4ff0a99cf50 (diff) | |
| download | op-kernel-dev-cb29529ea0030e60ef1bbbf8399a43d397a51526.zip op-kernel-dev-cb29529ea0030e60ef1bbbf8399a43d397a51526.tar.gz | |
sunsu: Fix panic in case of nonexistent port at "console=ttySY" cmdline option
If a machine has X (X < 4) sunsu ports and cmdline
option "console=ttySY" is passed, where X < Y <= 4,
than the following panic happens:
Unable to handle kernel NULL pointer dereference
TPC: <sunsu_console_setup+0x78/0xe0>
RPC: <sunsu_console_setup+0x74/0xe0>
I7: <register_console+0x378/0x3e0>
Call Trace:
[0000000000453a38] register_console+0x378/0x3e0
[0000000000576fa0] uart_add_one_port+0x2e0/0x340
[000000000057af40] su_probe+0x160/0x2e0
[00000000005b8a4c] platform_drv_probe+0xc/0x20
[00000000005b6c2c] driver_probe_device+0x12c/0x220
[00000000005b6da8] __driver_attach+0x88/0xa0
[00000000005b4df4] bus_for_each_dev+0x54/0xa0
[00000000005b5a54] bus_add_driver+0x154/0x260
[00000000005b7190] driver_register+0x50/0x180
[00000000006d250c] sunsu_init+0x18c/0x1e0
[00000000006c2668] do_one_initcall+0xe8/0x160
[00000000006c282c] kernel_init_freeable+0x12c/0x1e0
[0000000000603764] kernel_init+0x4/0x100
[0000000000405f64] ret_from_syscall+0x1c/0x2c
[0000000000000000] (null)
1)Fix the panic;
2)Increment registered port number every successful
probe.
Signed-off-by: Kirill Tkhai <tkhai@yandex.ru>
CC: David Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/kernel/leon_pci_grpci2.c')
0 files changed, 0 insertions, 0 deletions
