Bug 7527
| Summary: | isicom segmentation fault | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | Eric (ef87) |
| Component: | Serial | Assignee: | Jiri Slaby (jirislaby) |
| Status: | CLOSED CODE_FIX | ||
| Severity: | normal | CC: | jirislaby |
| Priority: | P2 | ||
| Hardware: | i386 | ||
| OS: | Linux | ||
| Kernel Version: | 2.6.18.2 | Subsystem: | |
| Regression: | --- | Bisected commit-id: | |
| Attachments: | close bug fix | ||
Created attachment 9511 [details]
close bug fix
Could you try the patch from comment #1? Fixed in 2.6.18.3. |
Most recent kernel where this bug did *NOT* occur: Distribution: Redhat EL 4 Hardware Environment: Intel x86 Software Environment: Problem Description: Unable to access Modem Steps to reproduce: [root@dialin-0 ~]# setserial -g /dev/ttyM0 Segmentation fault [root@dialin-0 ~]# Message from syslogd@dialin-0 at Tue Nov 14 14:41:38 2006 ... dialin-0 kernel: Oops: 0000 [#1] Message from syslogd@dialin-0 at Tue Nov 14 14:41:38 2006 ... dialin-0 kernel: SMP Message from syslogd@dialin-0 at Tue Nov 14 14:41:38 2006 ... dialin-0 kernel: CPU: 0 Message from syslogd@dialin-0 at Tue Nov 14 14:41:38 2006 ... dialin-0 kernel: EIP is at isicom_close+0x12/0x1ab [isicom] Message from syslogd@dialin-0 at Tue Nov 14 14:41:38 2006 ... dialin-0 kernel: eax: f5f14000 ebx: 00000000 ecx: f8922cf0 edx: f7f7fa40 Message from syslogd@dialin-0 at Tue Nov 14 14:41:38 2006 ... dialin-0 kernel: esi: 00000000 edi: 00000000 ebp: f5f14000 esp: f5fc7e08 Message from syslogd@dialin-0 at Tue Nov 14 14:41:38 2006 ... dialin-0 kernel: ds: 007b es: 007b ss: 0068 Message from syslogd@dialin-0 at Tue Nov 14 14:41:38 2006 ... dialin-0 kernel: Process setserial (pid: 4258, ti=f5fc7000 task=f665ad30 task.ti=f5fc7000) Message from syslogd@dialin-0 at Tue Nov 14 14:41:38 2006 ... dialin-0 kernel: Stack: f8922cf0 f7f7fa40 f5f14000 00000000 00000000 00000000 c020c208 00000000 Message from syslogd@dialin-0 at Tue Nov 14 14:41:38 2006 ... dialin-0 kernel: 00000000 000200d0 00000002 00000000 f7f7fa40 c033f600 000000d0 c034c5e0 Message from syslogd@dialin-0 at Tue Nov 14 14:41:38 2006 ... dialin-0 kernel: 00000003 c034c5d0 00000000 00000001 f5fc7e7c c0117e96 00000000 00000000 Message from syslogd@dialin-0 at Tue Nov 14 14:41:38 2006 ... dialin-0 kernel: Call Trace: Message from syslogd@dialin-0 at Tue Nov 14 14:41:38 2006 ... dialin-0 kernel: Code: 89 4d 06 89 c2 89 d8 59 5b 5b 5e 5f 5d e9 79 4e 9b c7 5f 5d 5b 5e 5f 5d c3 55 89 c5 57 56 53 51 51 89 54 24 04 8b 98 c0 01 00 00 <8b> 43 1c 85 db 89 04 24 0f 84 84 01 00 00 89 c6 83 c6 14 89 f0 Message from syslogd@dialin-0 at Tue Nov 14 14:41:38 2006 ... dialin-0 kernel: EIP: [<f8922d02>] isicom_close+0x12/0x1ab [isicom] SS:ESP 0068:f5fc7e08 DMESG: BUG: unable to handle kernel NULL pointer dereference at virtual address 0000001c printing eip: f8922d02 *pde = 35f5c001 Oops: 0000 [#1] SMP Modules linked in: ipv6 autofs4 sunrpc ipt_REJECT xt_tcpudp xt_state ip_conntrack iptable_filter ip_tables x_tables dm_mirror dm_mod button battery asus_acpi ac uhci_hcd ehci_hcd isicom shpchp i2c_i801 i2c_core e1000 floppy ext3 jbd raid1 ata_piix libata sd_mod scsi_mod CPU: 0 EIP: 0060:[<f8922d02>] Not tainted VLI EFLAGS: 00010286 (2.6.18.2 #1) EIP is at isicom_close+0x12/0x1ab [isicom] eax: f5f14000 ebx: 00000000 ecx: f8922cf0 edx: f7f7fa40 esi: 00000000 edi: 00000000 ebp: f5f14000 esp: f5fc7e08 ds: 007b es: 007b ss: 0068 Process setserial (pid: 4258, ti=f5fc7000 task=f665ad30 task.ti=f5fc7000) Stack: f8922cf0 f7f7fa40 f5f14000 00000000 00000000 00000000 c020c208 00000000 00000000 000200d0 00000002 00000000 f7f7fa40 c033f600 000000d0 c034c5e0 00000003 c034c5d0 00000000 00000001 f5fc7e7c c0117e96 00000000 00000000 Call Trace: [<f8922cf0>] isicom_close+0x0/0x1ab [isicom] [<c020c208>] release_dev+0x19b/0x5d4 [<c0117e96>] __wake_up+0x29/0x3c [<c020ac44>] tty_ldisc_enable+0x20/0x22 [<c020bda0>] init_dev+0x370/0x483 [<c020c7ef>] tty_open+0x1ae/0x2bb [<c01621fb>] chrdev_open+0x12f/0x14c [<c01620cc>] chrdev_open+0x0/0x14c [<c0159b98>] __dentry_open+0xc6/0x19e [<c0159d2a>] nameidata_to_filp+0x19/0x28 [<c0159c9b>] do_filp_open+0x2b/0x31 [<c01ca096>] strncpy_from_user+0x3c/0x5b [<c0159f03>] do_sys_open+0x3c/0xaf [<c0159f8c>] sys_open+0x16/0x18 [<c0103235>] sysenter_past_esp+0x56/0x79 Code: 89 4d 06 89 c2 89 d8 59 5b 5b 5e 5f 5d e9 79 4e 9b c7 5f 5d 5b 5e 5f 5d c3 55 89 c5 57 56 53 51 51 89 54 24 04 8b 98 c0 01 00 00 <8b> 43 1c 85 db 89 04 24 0f 84 84 01 00 00 89 c6 83 c6 14 89 f0 EIP: [<f8922d02>] isicom_close+0x12/0x1ab [isicom] SS:ESP 0068:f5fc7e08