Return-Path: Date: Fri, 28 Dec 2007 18:32:03 +0100 From: Gabor Gombas To: linux-kernel@vger.kernel.org Message-ID: <20071228173203.GA20690@boogie.lpds.sztaki.hu> MIME-Version: 1.0 Cc: bluez-devel@lists.sf.net Subject: [Bluez-devel] Oops involving RFCOMM and sysfs Reply-To: BlueZ development List-Id: BlueZ development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Sender: bluez-devel-bounces@lists.sourceforge.net Errors-To: bluez-devel-bounces@lists.sourceforge.net Hi, I'm using my phone as a GPRS modem over Bluetooth. Sometimes Bluetooth on the phone seems to stall and the phone has to be switched off & on to get it back to a sane state. During this I sometimes get the following Oops (this is kernel 2.6.24-rc6 on x86_64): Dec 28 17:52:11 host kernel: Unable to handle kernel NULL pointer dereference at 00000000000000b8 RIP: Dec 28 17:52:11 host kernel: [] mutex_lock+0x10/0x1d Dec 28 17:52:11 host kernel: PGD 920b0067 PUD a7aba067 PMD 0 Dec 28 17:52:11 host kernel: Oops: 0002 [1] Dec 28 17:52:11 host kernel: CPU 0 Dec 28 17:52:11 host kernel: Modules linked in: cpufreq_ondemand ppp_deflate zlib_deflate zlib_inflate bsd_comp ppp_async crc_ccitt ppp_generic slhc binfmt_misc rfcomm l2cap nfsd auth_rpcgss exportfs ipt_REJECT xt_tcpudp ipt_LOG xt_limit iptable_filter ip_tables x_tables nfs lockd nfs_acl sunrpc fuse dm_crypt dm_snapshot dm_mirror saa7134_alsa radeon hwmon_vid eeprom hci_usb bluetooth usb_storage tuner tea5767 tda8290 tuner_simple mt20xx tea5761 sg snd_intel8x0 saa7134 firewire_ohci snd_ac97_codec firewire_core videobuf_dma_sg videobuf_core ir_kbd_i2c ac97_bus crc_itu_t ir_common snd_pcm ehci_hcd ohci_hcd parport_pc parport sky2 sr_mod forcedeth snd_timer snd_page_alloc cdrom floppy Dec 28 17:52:11 host kernel: Pid: 4381, comm: pppd Not tainted 2.6.24-rc6 #1 Dec 28 17:52:11 host kernel: RIP: 0010:[] [] mutex_lock+0x10/0x1d Dec 28 17:52:11 host kernel: RSP: 0018:ffff81009402fd08 EFLAGS: 00010246 Dec 28 17:52:11 host kernel: RAX: 0000000000000000 RBX: 00000000000000b8 RCX: 0000000000000000 Dec 28 17:52:11 host kernel: RDX: ffff81009402ffd8 RSI: ffffffff80639d70 RDI: 00000000000000b8 Dec 28 17:52:11 host kernel: RBP: ffffffff8058adb0 R08: 6390dfaa7e3bd395 R09: ffffffff8050597e Dec 28 17:52:11 host kernel: R10: 0000000000004000 R11: 0000003000000018 R12: ffff8100b4d75e60 Dec 28 17:52:11 host kernel: R13: 00000000fffffff4 R14: ffff8100abe9e180 R15: ffff8100a7a10900 Dec 28 17:52:11 host kernel: FS: 00002ab1bddc3ac0(0000) GS:ffffffff805b0000(0000) knlGS:0000000000000000 Dec 28 17:52:11 host kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Dec 28 17:52:11 host kernel: CR2: 00000000000000b8 CR3: 000000009400e000 CR4: 00000000000006e0 Dec 28 17:52:11 host kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Dec 28 17:52:11 host kernel: DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Dec 28 17:52:11 host kernel: Process pppd (pid: 4381, threadinfo ffff81009402e000, task ffff81009403d060) Dec 28 17:52:11 host kernel: Stack: ffff81009403d060 ffffffff80285555 ffff810093734d48 ffffffff802aefa5 Dec 28 17:52:11 host kernel: ffff8100bf9e1c80 ffff8100b4d75e60 ffff810060720600 ffffffff802af1ba Dec 28 17:52:11 host kernel: ffff8100b6e5ced0 ffff8100b6e5ced0 ffff8100bfa11c00 ffff810060720600 Dec 28 17:52:11 host kernel: Call Trace: Dec 28 17:52:11 host kernel: [] dput+0x26/0x103 Dec 28 17:52:11 host kernel: [] sysfs_get_dentry+0x45/0x8f Dec 28 17:52:11 host kernel: [] sysfs_move_dir+0x63/0x204 Dec 28 17:52:11 host kernel: [] kobject_move+0xba/0x110 Dec 28 17:52:11 host kernel: [] device_move+0x59/0x111 Dec 28 17:52:11 host kernel: [] :rfcomm:rfcomm_tty_close+0x2f/0x74 Dec 28 17:52:11 host kernel: [] release_dev+0x212/0x5e2 Dec 28 17:52:11 host kernel: [] mntput_no_expire+0x1f/0x6f Dec 28 17:52:11 host kernel: [] sys_sendto+0x128/0x151 Dec 28 17:52:11 host kernel: [] tty_release+0xc/0x10 Dec 28 17:52:11 host kernel: [] __fput+0xb1/0x16f Dec 28 17:52:11 host kernel: [] filp_close+0x5d/0x65 Dec 28 17:52:11 host kernel: [] sys_close+0x73/0xa6 Dec 28 17:52:11 host kernel: [] tracesys+0xdc/0xe1 Dec 28 17:52:11 host kernel: Dec 28 17:52:11 host kernel: Dec 28 17:52:11 host kernel: Code: ff 0f 79 05 e8 c9 00 00 00 58 5a 5b c3 41 54 48 8d 47 08 48 Dec 28 17:52:11 host kernel: RIP [] mutex_lock+0x10/0x1d Dec 28 17:52:11 host kernel: RSP Dec 28 17:52:11 host kernel: CR2: 00000000000000b8 Dec 28 17:52:11 host kernel: ---[ end trace 12717319afdb56f5 ]--- The bug is also present in 2.6.23.9: Dec 28 15:30:29 twister kernel: Unable to handle kernel paging request at fffffffffffffffe RIP: Dec 28 15:30:29 twister kernel: [] dput+0xd/0x103 Dec 28 15:30:29 twister kernel: PGD 203067 PUD 204067 PMD 0 Dec 28 15:30:29 twister kernel: Oops: 0000 [1] Dec 28 15:30:29 twister kernel: CPU 0 Dec 28 15:30:29 twister kernel: Modules linked in: ppp_deflate zlib_deflate zlib_inflate bsd_comp ppp_async crc_ccitt ppp_generic slhc binfmt_misc rfcomm l2cap nfsd exportfs auth_rpcgss ipt_REJECT xt_tcpudp ipt_LOG xt_limit iptable_filter ip_tables x_tables nfs lockd nfs_acl sunrpc fuse dm_crypt dm_snapshot dm_mirror saa7134_alsa radeon it87 hwmon_vid eeprom hci_usb bluetooth tuner usb_storage saa7134 video_buf ir_kbd_i2c snd_intel8x0 sg firewire_ohci firewire_core ir_common crc_itu_t snd_ac97_codec ac97_bus forcedeth parport_pc parport sky2 ohci_hcd snd_pcm snd_timer snd_page_alloc ehci_hcd sr_mod cdrom floppy Dec 28 15:30:29 twister kernel: Pid: 14700, comm: pppd Not tainted 2.6.23.9 #1 Dec 28 15:30:29 twister kernel: RIP: 0010:[] [] dput+0xd/0x103 Dec 28 15:30:29 twister kernel: RSP: 0018:ffff810054e5bd28 EFLAGS: 00010282 Dec 28 15:30:29 twister kernel: RAX: fffffffffffffffe RBX: fffffffffffffffe RCX: 0000000000000052 Dec 28 15:30:29 twister kernel: RDX: ffffffff802f6414 RSI: ffff81000411b4e0 RDI: fffffffffffffffe Dec 28 15:30:29 twister kernel: RBP: ffff8100bfef14d0 R08: ffffffffffffffff R09: 0000000000005401 Dec 28 15:30:29 twister kernel: R10: 00007fff7018a2e0 R11: 0000000000000246 R12: ffff8100b3731948 Dec 28 15:30:29 twister kernel: R13: 0000000000000000 R14: ffff81005a1cb100 R15: fffffffffffffffe Dec 28 15:30:29 twister kernel: FS: 00002acd3a94cac0(0000) GS:ffffffff80592000(0000) knlGS:00000000f7d786b0 Dec 28 15:30:29 twister kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Dec 28 15:30:29 twister kernel: CR2: fffffffffffffffe CR3: 0000000047f21000 CR4: 00000000000006e0 Dec 28 15:30:29 twister kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Dec 28 15:30:29 twister kernel: DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Dec 28 15:30:29 twister kernel: Process pppd (pid: 14700, threadinfo ffff810054e5a000, task ffff81007907ce40) Dec 28 15:30:29 twister kernel: Stack: 00000000fffffffe ffffffff802a5a81 0000000000000053 ffff81000411b4e0 Dec 28 15:30:29 twister kernel: 0000000000000000 ffff8100b539f8d0 ffff81000411b4e0 ffff8100b04e7060 Dec 28 15:30:29 twister kernel: 00000000fffffff4 ffff81005a1cb100 ffff8100b09db800 ffffffff802f6448 Dec 28 15:30:29 twister kernel: Call Trace: Dec 28 15:30:29 twister kernel: [] sysfs_move_dir+0x1d2/0x1ed Dec 28 15:30:29 twister kernel: [] kobject_move+0xba/0x110 Dec 28 15:30:29 twister kernel: [] device_move+0x59/0x111 Dec 28 15:30:29 twister kernel: [] :rfcomm:rfcomm_tty_close+0x2f/0x74 Dec 28 15:30:29 twister kernel: [] release_dev+0x212/0x5e2 Dec 28 15:30:29 twister kernel: [] inode_has_perm+0x65/0x72 Dec 28 15:30:29 twister kernel: [] file_has_perm+0x94/0xa3 Dec 28 15:30:29 twister kernel: [] tty_release+0xc/0x11 Dec 28 15:30:29 twister kernel: [] __fput+0xb1/0x177 Dec 28 15:30:29 twister kernel: [] filp_close+0x5d/0x65 Dec 28 15:30:29 twister kernel: [] sys_close+0x72/0xa5 Dec 28 15:30:29 twister kernel: [] tracesys+0xdc/0xe1 Dec 28 15:30:29 twister kernel: Dec 28 15:30:29 twister kernel: Dec 28 15:30:29 twister kernel: Code: 83 3b 01 75 05 e8 e8 29 1e 00 48 c7 c6 08 de 61 80 48 89 df Dec 28 15:30:29 twister kernel: RIP [] dput+0xd/0x103 Dec 28 15:30:29 twister kernel: RSP Dec 28 15:30:29 twister kernel: CR2: fffffffffffffffe Gabor -- --------------------------------------------------------- MTA SZTAKI Computer and Automation Research Institute Hungarian Academy of Sciences --------------------------------------------------------- ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Bluez-devel mailing list Bluez-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-devel