Bug 1430
| Summary: | SysFS oops when rmmod'ing uhci-hcd after resuming from suspend | ||
|---|---|---|---|
| Product: | File System | Reporter: | Felipe Alfaro Solana (felipe_alfaro) |
| Component: | SysFS | Assignee: | Greg Kroah-Hartman (greg) |
| Status: | RESOLVED CODE_FIX | ||
| Severity: | normal | CC: | kernel-bugs |
| Priority: | P2 | ||
| Hardware: | i386 | ||
| OS: | Linux | ||
| Kernel Version: | 2.6.0-test9 | Subsystem: | |
| Regression: | --- | Bisected commit-id: | |
| Attachments: |
config used to build the kernel
lspci -vvv output |
||
Created attachment 1209 [details]
config used to build the kernel
Created attachment 1210 [details]
lspci -vvv output
Sorry, but I forgot the following steps while reproducing the bug: 1a. modprobe uhci-hcd 1b. mount /proc Running "apm -s" with /proc unmounted will fail with a "no APM support in kernel" error message. If i do 'rmmod uchi-hcd' before software suspend, it succeeds normally. If i do 'rmmod uchi-hcd' after software suspend, then i get the same result, plus various 'uchi-hcd' complaints upon resuming (see Bug #1373, which addresses those complaints). Just seeing the backtrace without the full 'dmesg' makes it hard to tell, but this might be a duplicate of that bug. Should be fixed in 2.6.9. If not, please let me know the oops message and reopen it. |
Distribution: ------------- Fedora Core Test 3. Nothing special with it, since the problems is reproducible by booting with "init=/bin/bash" kernel command line parameter. Hardware Environment: --------------------- Packard Bell Chrom@ laptop: Pentium III 700 Mhz Intel 440BX chipset Texas Instruments PCI4450 CardBus bridge ATI RAGE Mobility M1 AGP video card with 8MB of DRAM 3Com 3CCFE575CT 10/100 CardBus NIC Microsoft Intellimouse Explorer USB mouse Please, see attached "lspci" file for more details. Software Environment: --------------------- Nothing special Problem Description: -------------------- After resuming my laptop from APM suspend, running "rmmod uhci-hcd" causes the following oops: Unable to handle kernel NULL pointer dereference at virtual address 00000000 printing eip: c017fba6 *pde = 00000000 Oops: 0000 [#1] CPU: 0 EIP: 0060:[<c017fba6>] Not tainted EFLAGS: 00010292 EIP is at sysfs_get_dentry+0x16/0x70 eax: 00000000 ebx: cf885acc ecx: ffffffff edx: 00000000 esi: cf8f8280 edi: 00000000 ebp: cf885c24 esp: cf54be38 ds: 007b es: 007b ss: 0068 Process rmmod (pid: 454, threadinfo=cf54a000 task=cf54d900) Stack: c015df9d cf54be54 00000000 00000000 c017fbf5 cf810580 cf885acc cf885c00 c017fc2a cf8f8280 00000000 cf885acc d0879ec0 c01c33f8 cf8f8280 00000000 cf885acc cf885ccc c01c3575 cf885acc cf885b28 cf885acc cf885ccc c01c244d Call Trace: [<c015df9d>] lookup_hash+0x1d/0x30 [<c017fbf5>] sysfs_get_dentry+0x65/0x70 [<c017fc2a>] sysfs_hash_and_remove+0x2a/0x7d [<c01c33f8>] device_release_driver+0x28/0x70 [<c01c3575>] bus_remove_device+0x55/0xa0 [<c01c244d>] device_del+0x5d/0xa0 [<c01c24a3>] device_unregister+0x13/0x30 [<d0863d28>] usb_disconnect+0xd8/0xf0 [usbcore] [<d086c119>] usb_hcd_pci_remove+0x89/0x180 [usbcore] [<c01a2acb>] pci_device_remove+0x3b/0x40 [<c01c3436>] device_release_driver+0x66/0x70 [<c01c346b>] driver_detach+0x2b/0x40 [<c01c36ad>] bus_remove_driver+0x3d/0x80 [<c01c3ab3>] driver_unregister+0x13/0x28 [<c01a2ca6>] pci_unregister_driver+0x16/0x30 [<d085506f>] uhci_hcd_cleanup+0xf/0x5e [uhci_hcd] [<c0130299>] sys_delete_module+0x139/0x1b0 [<c0144000>] do_munmap+0x80/0x190 [<c0109339>] sysenter_past_esp+0x52/0x71 Code: f2 ae f7 d1 49 89 4c 24 0c 31 db 89 d7 49 83 f9 ff 74 24 8d Steps to reproduce: ------------------- This problem can be always reproduced by performing the following steps: 0. Make sure the Intellimouse USB mouse is plugged. 1. Boot into 2.6.0-test9 with "init=/bin/bash" 2. Run "apm -s" 3. Let the system suspend, then resume it from suspension. 4. On the command line, run "rmmod uhci-hcd" 5. The previously described oops will be triggered. Additional information: ----------------------- Please, see the attached "config" file for information on the configuration used to build the kernel.