它是我自己编译的内核。问题是它在尝试启动 USB 网络共享时重新启动。 wifi 网络共享有效。
last_kmesg 给了这个
[ 264.185455] Unable to handle kernel NULL pointer dereference at virtual address 00000010
[ 264.185638] pgd = 80004000
[ 264.185699] [00000010] *pgd=00000000
[ 264.185760] Internal error: Oops: 5 [#1] PREEMPT
[ 264.185852] last sysfs file: /sys/devices/virtual/android_usb/android0/bDeviceClass
[ 264.186004] Modules linked in: wl12xx_sdio wl12xx mac80211 cfg80211 compat_firmware_class(P) compat
[ 264.186187] CPU: 0 Tainted: P W (2.6.32.39-MESA-JB-v2.3 #4)
[ 264.186340] PC is at name_show+0xc/0x44
[ 264.186981] LR is at name_show+0xc/0x44
[ 264.190795] pc : [<803ff2d0>] lr : [<803ff2d0>] psr: a00f0013
[ 264.190795] sp : cf15dda8 ip : 80323000 fp : c4e109c0
[ 264.202239] r10: 00000004 r9 : c4e109c0 r8 : 00000004
[ 264.207458] r7 : 00000004 r6 : cf15c000 r5 : c0b64000 r4 : c0b64000
[ 264.213958] r3 : 00000001 r2 : c0b64000 r1 : 00000000 r0 : 00000000
[ 264.220489] Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel
[ 264.227752] Control: 10c57c7d Table: 4ef24059 DAC: 00000017
[ 264.233489]
[ 264.233489] PC: 0x803ff250:
[ 264.237731] f250 e2851014 ebfb97b7 e59f301c e5941008 e5930000 ebfb9850 e5940004 e3a01000
[ 264.245910] f270 e8bd4070 eafba402 80794fc0 8080a124 e92d4070 e1a05002 ebfba3f7 e5903014
[ 264.254058] f290 e1a04000 e3530000 0a000003 e1a01005 e12fff33 e3500000 a8bd8070 e1a00005
[ 264.262237] f2b0 e59f1008 e594200c e8bd4070 eaf9bafb 806651b2 e92d4070 e1a05002 ebfba3e6
[ 264.270385] f2d0 e5903010 e1a04000 e3530000 0a000003 e1a01005 e12fff33 e3500000 a8bd8070
[ 264.278533] f2f0 e1a00005 e59f1008 e5942000 e8bd4070 eaf9baea 80675d73 e92d4073 e1a04000
[ 264.286712] f310 e59f60c4 e5963000 e3530000 1a000002 ebffffb1 e2505000 ba000029 e59f50ac
[ 264.294860] f330 e1952f9f e2822001 e1851f92 e3310000 1afffffa e5940000 e3a01000 e5842008
[ 264.303009]
[ 264.303039] LR: 0x803ff250:
[ 264.307281] f250 e2851014 ebfb97b7 e59f301c e5941008 e5930000 ebfb9850 e5940004 e3a01000
[ 264.315429] f270 e8bd4070 eafba402 80794fc0 8080a124 e92d4070 e1a05002 ebfba3f7 e5903014
[ 264.323608] f290 e1a04000 e3530000 0a000003 e1a01005 e12fff33 e3500000 a8bd8070 e1a00005
[ 264.331756] f2b0 e59f1008 e594200c e8bd4070 eaf9bafb 806651b2 e92d4070 e1a05002 ebfba3e6
[ 264.339904] f2d0 e5903010 e1a04000 e3530000 0a000003 e1a01005 e12fff33 e3500000 a8bd8070
[ 264.348083] f2f0 e1a00005 e59f1008 e5942000 e8bd4070 eaf9baea 80675d73 e92d4073 e1a04000
[ 264.356231] f310 e59f60c4 e5963000 e3530000 1a000002 ebffffb1 e2505000 ba000029 e59f50ac
[ 264.364379] f330 e1952f9f e2822001 e1851f92 e3310000 1afffffa e5940000 e3a01000 e5842008
[ 264.372558]
[ 264.372558] SP: 0xcf15dd28:
[ 264.376800] dd28 00000000 800ffc28 00000000 00000041 807a27e4 00000000 8fb634a0 00000000
[ 264.384979] dd48 ffffffff cf15dd94 cf15c000 00000004 00000004 80033aac 00000000 00000000
[ 264.393127] dd68 c0b64000 00000001 c0b64000 c0b64000 cf15c000 00000004 00000004 c4e109c0
[ 264.401275] dd88 00000004 c4e109c0 80323000 cf15dda8 803ff2d0 803ff2d0 a00f0013 ffffffff
[ 264.409454] dda8 c0b64000 8002ff9c cf15c000 803ff42c 80752b30 80041d0c 80041ce8 00000005
[ 264.417602] ddc8 cf15c010 80042594 00000001 80764d18 80764d18 200f0093 cf612580 00000000
[ 264.425750] dde8 00000003 807c8d00 cf15de14 800befc4 cf612580 200f0093 807c8d00 00000000
[ 264.433929] de08 00000003 cf612580 cf15de2c 800bfd60 cf629fa4 00000001 cf600908 00000000
[ 264.442077]
[ 264.442077] IP: 0x80322f80:
[ 264.446350] 2f80 e3803b02 e5950004 e6ff3073 eb00021c e1a00004 eb0947a1 e3a00000 e8bd8038
[ 264.454498] 2fa0 e92d4010 e1a04000 e3a02000 e5900004 e59410c0 eb000231 e250c000 b8bd8010
[ 264.462646] 2fc0 e38ccc12 e30f3bff e5940004 e3a02000 e59410c0 e00c3003 e8bd4010 ea000208
[ 264.470825] 2fe0 e92d4070 e1a04000 e59030e0 e3a02004 e59050dc e59410c0 e0055003 e58050e0
[ 264.478973] 3000 e5900004 eb00021d e3500000 b8bd8070 e3c03efe e3150001 13833020 e3150002
[ 264.487152] 3020 13833040 e3150004 13833080 e3150008 13833c01 e3150a02 13833b01 e3150901
[ 264.495300] 3040 13833b02 e1530000 0a000008 e5940004 e3a02004 e59410c0 e6ff3073 eb0001e8
[ 264.503448] 3060 e3500000 a3a06001 aa000001 e8bd8070 e3a06000 e59410dc e3110030 01a00006
[ 264.511627]
[ 264.511627] FP: 0xc4e10940:
[ 264.515869] 0940 c4e1093c 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 264.524017] 0960 0000d3da c4e10964 c4e10964 00000003 c4fc1af1 00000000 00000000 ced0a600
[ 264.532196] 0980 8fb98e3c 00000001 00000000 00000000 54b10008 54b0f4c4 00001fe5 c4e1099c
[ 264.540344] 09a0 c4e1099c 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 264.548522] 09c0 cf150000 00000200 00000000 00000004 8036c1a4 cf138c58 00000000 00000000
[ 264.556671] 09e0 ffffff94 00000000 00000000 00000000 00000000 00000000 00000000 4f350000
[ 264.564819] 0a00 4f33d140 ffc73140 00000000 00000000 00000000 00000000 00000000 00000000
[ 264.572998] 0a20 00005a1a c4e10a24 c4e10a24 00000003 c7e2cc71 c7ac75d0 00000000 c885dc00
[ 264.581146]
[ 264.581146] R2: 0xc0b63f80:
[ 264.585388] 3f80 c0012d00 00040312 0000ffff c0012d00 00040206 0000043f c0012d00 00040204
[ 264.593566] 3fa0 00000000 c0022d00 00040113 3effff00 3effff00 c0022d00 0004010c 00000000
[ 264.601715] 3fc0 00000000 c0012d00 00040104 0000000f c0022d00 0004000e 00000000 00e000a0
[ 264.609893] 3fe0 c0012d00 00040080 7f007f60 c0013f00 66a6a000 000006dc c0022d00 0001009c
[ 264.618041] 4000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 264.626190] 4020 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 264.634368] 4040 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 264.642517] 4060 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 264.650665]
[ 264.650695] R4: 0xc0b63f80:
[ 264.654937] 3f80 c0012d00 00040312 0000ffff c0012d00 00040206 0000043f c0012d00 00040204
[ 264.663085] 3fa0 00000000 c0022d00 00040113 3effff00 3effff00 c0022d00 0004010c 00000000
[ 264.671264] 3fc0 00000000 c0012d00 00040104 0000000f c0022d00 0004000e 00000000 00e000a0
[ 264.679412] 3fe0 c0012d00 00040080 7f007f60 c0013f00 66a6a000 000006dc c0022d00 0001009c
[ 264.687561] 4000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 264.695739] 4020 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 264.703887] 4040 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 264.712036] 4060 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 264.720214]
[ 264.720214] R5: 0xc0b63f80:
[ 264.724456] 3f80 c0012d00 00040312 0000ffff c0012d00 00040206 0000043f c0012d00 00040204
[ 264.732635] 3fa0 00000000 c0022d00 00040113 3effff00 3effff00 c0022d00 0004010c 00000000
[ 264.740783] 3fc0 00000000 c0012d00 00040104 0000000f c0022d00 0004000e 00000000 00e000a0
[ 264.748931] 3fe0 c0012d00 00040080 7f007f60 c0013f00 66a6a000 000006dc c0022d00 0001009c
[ 264.757110] 4000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 264.765258] 4020 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 264.773406] 4040 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 264.781585] 4060 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 264.789733]
[ 264.789733] R6: 0xcf15bf80:
[ 264.794006] bf80 cf623ed8 cf142d60 80764d18 80750ff8 cf15bfbc 800d8f64 83b3f5b3 00000000
[ 264.802154] bfa0 00000013 cf142e94 83b3f5b3 00000000 00000000 cf623ec8 80371854 cf138c00
[ 264.810302] bfc0 00000000 00000000 00000000 00000000 00000000 800d8f7c 00000000 00000000
[ 264.818481] bfe0 cf15bfe0 cf15bfe0 00000000 00000000 00000000 80035004 55555555 55555555
[ 264.826629] c000 00000000 00000002 00000000 cf142d60 80764db0 00000000 00000017 80764d18
[ 264.834808] c020 cf142d60 cf15c000 807c8d00 cf0ffde0 c8274cc0 cf612d60 cf15de94 cf15de40
[ 264.842956] c040 805741a8 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 264.851104] c060 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 264.859283]
[ 264.859283] R9: 0xc4e10940:
[ 264.863525] 0940 c4e1093c 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 264.871673] 0960 0000d3da c4e10964 c4e10964 00000003 c4fc1af1 00000000 00000000 ced0a600
[ 264.879852] 0980 8fb98e3c 00000001 00000000 00000000 54b10008 54b0f4c4 00001fe5 c4e1099c
[ 264.888000] 09a0 c4e1099c 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 264.896179] 09c0 cf150000 00000200 00000000 00000004 8036c1a4 cf138c58 00000000 00000000
[ 264.904327] 09e0 ffffff94 00000000 00000000 00000000 00000000 00000000 00000000 4f350000
[ 264.912475] 0a00 4f33d140 ffc73140 00000000 00000000 00000000 00000000 00000000 00000000
[ 264.920654] 0a20 00005a1a c4e10a24 c4e10a24 00000003 c7e2cc71 c7ac75d0 00000000 c885dc00
[ 264.928802] Process file-storage (pid: 67, stack limit = 0xcf15c2f0)
[ 264.935150] Stack: (0xcf15dda8 to 0xcf15e000)
[ 264.939483] dda0: c0b64000 8002ff9c cf15c000 803ff42c 80752b30 80041d0c
[ 264.947662] ddc0: 80041ce8 00000005 cf15c010 80042594 00000001 80764d18 80764d18 200f0093
[ 264.955810] dde0: cf612580 00000000 00000003 807c8d00 cf15de14 800befc4 cf612580 200f0093
[ 264.963958] de00: 807c8d00 00000000 00000003 cf612580 cf15de2c 800bfd60 cf629fa4 00000001
[ 264.972137] de20: cf600908 00000000 cf15de34 800bfddc cf15de64 800d92d0 cf600908 800beb58
[ 264.980285] de40: 00000000 cf15c000 200f0093 00000000 cf138c80 00000004 00000000 8002ff40
[ 264.988464] de60: cf15de7c 800bfc98 00000000 00000010 cf15c000 600f0013 8036c308 800d570c
[ 264.996612] de80: cf15c000 cf6008e0 00000000 800d5794 cf15de98 800d57ec 807eac50 cf138c00
[ 265.004760] dea0: 00000000 8036cd04 00000001 cf138c00 00000000 cf15c000 00000004 cf138c00
[ 265.012939] dec0: 00000000 cf15c000 00000004 8036f8e8 00000017 807c8d00 0000000a 00000000
[ 265.021087] dee0: 00000000 00000000 00000000 8074801c cf142d60 800ddf4c 00000000 00000002
[ 265.029235] df00: 80748000 80033f64 c4e109c0 80010013 cf01a068 80365234 806bc58e 8036cedc
[ 265.037414] df20: 8002ff84 8fd180e0 cf138c3c cf142e90 00007736 00000000 8002ff84 cf15c000
[ 265.045562] df40: cf138c00 00000001 cf138c58 00000004 c4e109c0 00000004 c4e109c0 cf138c00
[ 265.053741] df60: 00000200 cf15c000 cf138c58 803718e8 cf138c5c 806bc58e cf624000 80033f64
[ 265.061889] df80: cf623ed8 cf142d60 80764d18 80750ff8 cf15dfbc 800d8f64 83574b0d 00000000
[ 265.070037] dfa0: 00000013 cf142e94 83574b0d 00000000 00000000 cf623ec8 80371854 cf138c00
[ 265.078216] dfc0: 00000000 00000000 00000000 00000000 00000000 800d8f7c 00000000 00000000
[ 265.086364] dfe0: cf15dfe0 cf15dfe0 00000000 00000000 00000000 80035004 55555555 55555555
[ 265.094543] [<803ff2d0>] (name_show+0xc/0x44) from [<803ff42c>] (switch_set_state+0x3c/0x130)
[ 265.103057] [<803ff42c>] (switch_set_state+0x3c/0x130) from [<8036f8e8>] (handle_exception+0x3f8/0x4c4)
[ 265.112426] [<8036f8e8>] (handle_exception+0x3f8/0x4c4) from [<803718e8>] (fsg_main_thread+0x94/0x2210)
[ 265.121795] [<803718e8>] (fsg_main_thread+0x94/0x2210) from [<800d8f7c>] (kthread+0x78/0x80)
[ 265.130218] [<800d8f7c>] (kthread+0x78/0x80) from [<80035004>] (kernel_thread_exit+0x0/0x8)
[ 265.138549] Code: 806651b2 e92d4070 e1a05002 ebfba3e6 (e5903010)
[ 265.146209] --- [ end trace 1b75b31a2719ed1e ]---
[ 265.165191] Kernel panic - not syncing: Fatal exception
[ 265.165344] [<8003a260>] (unwind_backtrace+0x0/0x154) from [<80573ae0>] (panic+0x54/0x120)
[ 265.165557] [<80573ae0>] (panic+0x54/0x120) from [<80038038>] (die+0x168/0x194)
[ 265.169982] [<80038038>] (die+0x168/0x194) from [<8003b3f0>] (__do_kernel_fault+0x64/0x74)
[ 265.178222] [<8003b3f0>] (__do_kernel_fault+0x64/0x74) from [<8003b5c4>] (do_page_fault+0x1c4/0x1d8)
[ 265.187347] [<8003b5c4>] (do_page_fault+0x1c4/0x1d8) from [<8003325c>] (do_DataAbort+0x30/0x98)
[ 265.196014] [<8003325c>] (do_DataAbort+0x30/0x98) from [<80033aac>] (__dabt_svc+0x4c/0x60)
[ 265.204254] Exception stack(0xcf15dd60 to 0xcf15dda8)
[ 265.209289] dd60: 00000000 00000000 c0b64000 00000001 c0b64000 c0b64000 cf15c000 00000004
[ 265.217437] dd80: 00000004 c4e109c0 00000004 c4e109c0 80323000 cf15dda8 803ff2d0 803ff2d0
[ 265.225585] dda0: a00f0013 ffffffff
[ 265.229095] [<80033aac>] (__dabt_svc+0x4c/0x60) from [<803ff2d0>] (name_show+0xc/0x44)
[ 265.236968] [<803ff2d0>] (name_show+0xc/0x44) from [<803ff42c>] (switch_set_state+0x3c/0x130)
[ 265.245483] [<803ff42c>] (switch_set_state+0x3c/0x130) from [<8036f8e8>] (handle_exception+0x3f8/0x4c4)
[ 265.254852] [<8036f8e8>] (handle_exception+0x3f8/0x4c4) from [<803718e8>] (fsg_main_thread+0x94/0x2210)
[ 265.264251] [<803718e8>] (fsg_main_thread+0x94/0x2210) from [<800d8f7c>] (kthread+0x78/0x80)
[ 265.272674] [<800d8f7c>] (kthread+0x78/0x80) from [<80035004>] (kernel_thread_exit+0x0/0x8)
[ 265.280975] &@panic_name@:*file-storage*
[ 265.284942] Rebooting in 10 seconds..
我假设泄漏的地址是 0x803ff250
[ 264.233489] PC: 0x803ff250:
但是当我尝试通过 addr2line 查找地址时
addr2line -e ~/vmlinux 0x803ff250
它只是给出了这个输出
??:0
有任何帮助/指示/指导吗？ 我不太擅长调试东西。 预先感谢。
最佳答案
你应该使用 objdump 在内核中找出你崩溃的 PC
我对addr2line不熟悉，不过应该一般在用户态va下使用，用来调试用户态程序。不确定这是否可以找到内核的位置。
关于android - android内核调试内存泄漏，addr2line找不到具体地址，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/13428811/