Messages in this thread | | | Date | Wed, 26 Mar 2003 11:54:00 -0800 | From | "Martin J. Bligh" <> | Subject | [Bug 509] New: NULL pointer when rmmod faulty driver |
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http://bugme.osdl.org/show_bug.cgi?id=509
Summary: NULL pointer when rmmod faulty driver Kernel Version: 2.5.62 Status: NEW Severity: normal Owner: greg@kroah.com Submitter: bugzilla@pointdefence.net
Distribution: downloaded and built with gcc 3.2.1 Hardware Environment: Intel 586 Software Environment: glibc 1.2.10 module-init-tools version 0.9.10 Problem Description: I'm removing a usb driver which has failed. when I remove the usb cable before rmmod the driver
Mar 26 20:23:33 localhost modprobe: FATAL: Module /dev/video0 not found. Mar 26 20:27:14 localhost kernel: drivers/usb/host/uhci-hcd.c: 1000: host controller halted. very bad Mar 26 20:27:14 localhost kernel: usb 1-1: USB disconnect, address 2 Mar 26 20:27:14 localhost kernel: Unable to handle kernel NULL pointer dereference at virtual address 0000008f Mar 26 20:27:14 localhost kernel: printing eip: Mar 26 20:27:14 localhost kernel: ce8c2a3c Mar 26 20:27:14 localhost kernel: *pde = 00000000 Mar 26 20:27:14 localhost kernel: Oops: 0000 Mar 26 20:27:14 localhost kernel: CPU: 0 Mar 26 20:27:14 localhost kernel: EIP: 0060:[<ce8c2a3c>] Tainted: GF Mar 26 20:27:14 localhost kernel: EFLAGS: 00010206 Mar 26 20:27:14 localhost kernel: EIP is at qc_usb_disconnect+0x98/0x268 [quickcam] Mar 26 20:27:14 localhost kernel: eax: ce8d07c0 ebx: 00000077 ecx: ce8c29a4 edx: ca38b3e0 Mar 26 20:27:14 localhost kernel: esi: ce8d07d8 edi: ce8d07c0 ebp: c13edeb0 esp: c13ede50 Mar 26 20:27:14 localhost kernel: ds: 007b es: 007b ss: 0068 Mar 26 20:27:14 localhost kernel: Process khubd (pid: 4, threadinfo=c13ec000 task=cdfab240) Mar 26 20:27:14 localhost kernel: Stack: c6f0b160 c13ede68 c016a099 cdfec4b0 c13121a0 c13121a0 c13ede7c c016b0d3 Mar 26 20:27:14 localhost kernel: c13121a0 c6f0b160 c6f0b160 c13ede94 c01683d0 ce8d0844 ce8d0844 c02e8bde Mar 26 20:27:14 localhost kernel: ca38b3e0 00000077 c0186009 c6f0b980 ca38b3e0 ca38b3f8 ce8d07d8 ca38b3f8 Mar 26 20:27:14 localhost kernel: Call Trace: Mar 26 20:27:14 localhost kernel: [<c016a099>] destroy_inode+0x59/0x60 Mar 26 20:27:14 localhost kernel: [<c016b0d3>] iput+0x63/0x90 Mar 26 20:27:14 localhost kernel: [<c01683d0>] dput+0x30/0x170 Mar 26 20:27:14 localhost kernel: [<ce8d0844>] qc_usb_driver+0x84/0xa0 [quickcam] Mar 26 20:27:14 localhost kernel: [<ce8d0844>] qc_usb_driver+0x84/0xa0 [quickcam] Mar 26 20:27:14 localhost kernel: [<c02e8bde>] usb_device_remove+0xde/0x120 Mar 26 20:27:14 localhost kernel: [<c0186009>] hash_and_remove+0x69/0xb0 Mar 26 20:27:14 localhost kernel: [<ce8d07d8>] qc_usb_driver+0x18/0xa0 [quickcam] Mar 26 20:27:14 localhost kernel: [<c0250e56>] device_release_driver+0x66/0x70 Mar 26 20:27:14 localhost kernel: [<c0250fef>] bus_remove_device+0x7f/0xd0 Mar 26 20:27:14 localhost kernel: [<c025013c>] device_del+0x7c/0xc0 Mar 26 20:27:14 localhost kernel: [<c0250194>] device_unregister+0x14/0x22 Mar 26 20:27:14 localhost kernel: [<c02e9637>] usb_disconnect+0x97/0x100 Mar 26 20:27:14 localhost kernel: [<c02ec06f>] usb_hub_port_connect_change+0x33f/0x350 Mar 26 20:27:14 localhost kernel: [<c02eb938>] usb_hub_port_status+0x68/0xb0 Mar 26 20:27:14 localhost kernel: [<c02ec398>] usb_hub_events+0x318/0x3a0 Mar 26 20:27:14 localhost kernel: [<c02ec455>] usb_hub_thread+0x35/0xf0 Mar 26 20:27:14 localhost kernel: [<c011c930>] default_wake_function+0x0/0x20 Mar 26 20:27:14 localhost kernel: [<c02ec420>] usb_hub_thread+0x0/0xf0 Mar 26 20:27:14 localhost kernel: [<c010826d>] kernel_thread_helper+0x5/0x18 Mar 26 20:27:14 localhost kernel: Mar 26 20:27:14 localhost kernel: Code: 8b 43 18 85 c0 75 39 83 ec 0c 8d 44 24 2c 50 e8 90 cf 84 f1
Then when I try to rmmod the driver I get
Unable to handle kernel NULL pointer dereference at virtual address 00000000 printing eip: 00000000 *pde = 00000000 Oops: 0000 CPU: 0 EIP: 0060:[<00000000>] Tainted: GF EFLAGS: 00010246 EIP is at 0x0 eax: 00000000 ebx: c042b9d8 ecx: c042b9d8 edx: 00000000 esi: 00000880 edi: ce8d1860 ebp: c3fe5fbc esp: c3fe5f58 ds: 007b es: 007b ss: 0068 Process rmmod (pid: 13369, threadinfo=c3fe4000 task=c92aa7a0) Stack: c01321eb c03b087b 00000077 0000003b 00000000 00000000 63697571 6d61636b c3fe5f00 00000046 c04dbb48 00000046 c3fe4000 c3fe4000 00000000 c3fe5fbc c010bd78 00000000 c3fe5fc4 c0429124 00429124 c04a9900 bffff768 bffff97a Call Trace: [<c01321eb>] sys_delete_module+0x1cb/0x220 [<c010bd78>] do_IRQ+0x108/0x130 [<c010a563>] syscall_call+0x7/0xb
Code: Bad EIP value.
Steps to reproduce:
is this a kernel problem??
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