* Query:Regarding object poison overwritten in binder_transaction [not found] <4d2b6014-ea76-b489-fdde-2e058e2fac4d@codeaurora.org> @ 2018-03-03 14:52 ` Kohli, Gaurav 2018-03-03 19:27 ` Greg Kroah-Hartman 0 siblings, 1 reply; 3+ messages in thread From: Kohli, Gaurav @ 2018-03-03 14:52 UTC (permalink / raw) To: Arve Hjønnevåg, Riley Andrews, devel Cc: Greg Kroah-Hartman, linux-kernel HI , Is there any known issue of slab poisoning in binder_transaction variable on kernel 4.9, it seems owner variable of spinlock is getting corrupted(which is last 8th byte of binder_transaction struct). 368.423462: <2> [<ffffff918ec3177c>] print_trailer+0x13c/0x214 368.428998: <2> [<ffffff918ec3193c>] check_bytes_and_report+0xe8/0xfc 368.435144: <2> [<ffffff918ec31d8c>] check_object+0x248/0x280 368.440592: <2> [<ffffff918ec31f0c>] alloc_debug_processing+0x148/0x1a0 368.446913: <2> [<ffffff918ec333d0>] ___slab_alloc.constprop.72+0x654/0x690 368.453586: <2> [<ffffff918ec33464>] __slab_alloc.isra.68.constprop.71+0x58/0x98 368.460693: <2> [<ffffff918ec338fc>] kmem_cache_alloc_trace+0x198/0x2c4 368.467011: <2> [<ffffff918f7ae24c>] binder_transaction+0xcb8/0x244c 368.473065: <2> [<ffffff918f7b03b8>] binder_thread_write+0x9d8/0x1410 368.479206: <2> [<ffffff918f7b0f20>] binder_ioctl_write_read+0x130/0x370 368.485615: <2> [<ffffff918f7b16b0>] binder_ioctl+0x550/0x7dc 368.491065: <2> [<ffffff918ec5ac0c>] do_vfs_ioctl+0xcc/0x888 368.496424: <2> [<ffffff918ec5b458>] SyS_ioctl+0x90/0xa4 368.501430: <2> [<ffffff918ea83770>] el0_svc_naked+0x24/0x28 368.506798: <6> Kernel panic - not syncing: object poison overwritten 368.287743: <6> Object ffffffc5a0692e20: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk 368.297117: <6> Object ffffffc5a0692e30: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk 368.306487: <6> Object ffffffc5a0692e40: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk 368.315866: <6> Object ffffffc5a0692e50: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk 368.325241: <6> Object ffffffc5a0692e60: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk 368.334618: <6> Object ffffffc5a0692e70: 6b 6b 6b 6b 6b 6b 6b 6b 67 6b 6b 6b 6b 6b 6b a5 kkkkkkkkgkkkkkk. here it is corrupted(seems write after free case) 368.343997: <6> Redzone ffffffc5a0692e80: bb bb bb bb bb bb bb bb ........ 368.352755: <6> Padding ffffffc5a0692fc0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZZZZZ 368.362215: <6> Padding ffffffc5a0692fd0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZZZZZ 368.371681: <6> Padding ffffffc5a0692fe0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZZZZZ 368.381146: <6> Padding ffffffc5a0692ff0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZZZZZ Regards Gaurav -- Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project. _______________________________________________ devel mailing list devel@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Query:Regarding object poison overwritten in binder_transaction 2018-03-03 14:52 ` Query:Regarding object poison overwritten in binder_transaction Kohli, Gaurav @ 2018-03-03 19:27 ` Greg Kroah-Hartman 2018-03-05 11:39 ` Kohli, Gaurav 0 siblings, 1 reply; 3+ messages in thread From: Greg Kroah-Hartman @ 2018-03-03 19:27 UTC (permalink / raw) To: Kohli, Gaurav Cc: devel, Arve Hjønnevåg, Riley Andrews, linux-kernel On Sat, Mar 03, 2018 at 08:22:35PM +0530, Kohli, Gaurav wrote: > HI , > > Is there any known issue of slab poisoning in binder_transaction variable on kernel 4.9, If you are using binder in an Android device with 4.9, please use the version in the android-common tree, as it has all of the newer features backported properly there. You will need that for newer Android systems (like Android O and newer) anyway, so please try that tree. If you still have problems there, please file a bug in AOSP. thanks, greg k-h _______________________________________________ devel mailing list devel@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Query:Regarding object poison overwritten in binder_transaction 2018-03-03 19:27 ` Greg Kroah-Hartman @ 2018-03-05 11:39 ` Kohli, Gaurav 0 siblings, 0 replies; 3+ messages in thread From: Kohli, Gaurav @ 2018-03-05 11:39 UTC (permalink / raw) To: Greg Kroah-Hartman Cc: Arve Hjønnevåg, Riley Andrews, devel, linux-kernel, linux-arm-msm Thanks Greg, I will check the common tree, and it seems to me a new bug , will file a bug if won't be able to resolve from android-common tree. Regards Gaurav On 3/4/2018 12:57 AM, Greg Kroah-Hartman wrote: > On Sat, Mar 03, 2018 at 08:22:35PM +0530, Kohli, Gaurav wrote: >> HI , >> >> Is there any known issue of slab poisoning in binder_transaction variable on kernel 4.9, > If you are using binder in an Android device with 4.9, please use the > version in the android-common tree, as it has all of the newer features > backported properly there. You will need that for newer Android systems > (like Android O and newer) anyway, so please try that tree. If you > still have problems there, please file a bug in AOSP. > > thanks, > > greg k-h -- Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project. ^ permalink raw reply [flat|nested] 3+ messages in thread
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2018-03-03 14:52 ` Query:Regarding object poison overwritten in binder_transaction Kohli, Gaurav
2018-03-03 19:27 ` Greg Kroah-Hartman
2018-03-05 11:39 ` Kohli, Gaurav
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