Hello all, I ran a modified version of the file system fuzzer (https://github.com/sughodke/fsfuzzer) for one of the projects I am working, and at one point I got a possible crash. I got the following trace on a device with a 32bit kernel 3.14. I have searched the Bugzilla for this issue, but I was unable to find it.
I am unsure of the impact/severity of the issue, and since I do not have experience with BTRFS I was hoping someone from here can take a look at it. Some information: # uname -a Linux *** 3.14.0-*** SMP PREEMPT Mon May 12 09:06:16 PDT 2014 i686 GNU/Linux # btrfs --version Btrfs v3.12 Call trace below. If you need additional info, please let me know, and I will be glad to provide it to you, if possible. Regards, Alexandru Cornea [ 227.576593] Call Trace: [ 227.581217] [<c20ffbf3>] ? mempool_alloc_slab+0x13/0x20 [ 227.585840] [<c21730cd>] ? bvec_alloc+0x4d/0xe0 [ 227.590355] [<c21732cc>] ? bio_alloc_bioset+0x16c/0x230 [ 227.594787] [<c228a9ac>] ? submit_extent_page.isra.36+0xec/0x1e0 [ 227.599242] [<c22980f2>] btrfs_map_bio+0x82/0x510 [ 227.603701] [<c228ae1b>] ? __do_readpage+0x37b/0x870 [ 227.608082] [<c228c3c0>] ? repair_eb_io_failure+0x110/0x110 [ 227.612393] [<c2260f80>] ? free_root_pointers+0x50/0x50 [ 227.616708] [<c22627f5>] ? btrfs_bio_wq_end_io+0x25/0x60 [ 227.620950] [<c22629ea>] btree_submit_bio_hook+0x5a/0x100 [ 227.625119] [<c2262990>] ? btrfs_wq_submit_bio+0x140/0x140 [ 227.629272] [<c2286970>] submit_one_bio+0x80/0xb0 [ 227.633391] [<c2262990>] ? btrfs_wq_submit_bio+0x140/0x140 [ 227.637527] [<c228efd8>] read_extent_buffer_pages+0x218/0x2e0 [ 227.641609] [<c2262008>] btree_read_extent_buffer_pages.constprop.49+0xc8/0x140 [ 227.645683] [<c2260f80>] ? free_root_pointers+0x50/0x50 [ 227.649761] [<c2262d0c>] read_tree_block+0x3c/0x60 [ 227.653732] [<c2266c0c>] open_ctree+0x11bc/0x1e00 [ 227.657599] [<c2337043>] ? strlcpy+0x33/0x50 [ 227.661461] [<c223e3b8>] btrfs_mount+0x678/0x840 [ 227.665240] [<c23314b6>] ? ida_get_new_above+0x1a6/0x200 [ 227.668954] [<c23314b6>] ? ida_get_new_above+0x1a6/0x200 [ 227.672622] [<c215d1b9>] ? alloc_vfsmnt+0x99/0x160 [ 227.676292] [<c2145b01>] mount_fs+0x31/0x170 [ 227.679890] [<c211950f>] ? __alloc_percpu+0xf/0x20 [ 227.683432] [<c215d1d3>] ? alloc_vfsmnt+0xb3/0x160 [ 227.686950] [<c215d309>] vfs_kern_mount+0x49/0xd0 [ 227.690427] [<c215f480>] do_mount+0x1e0/0x8e0 [ 227.693884] [<c2114699>] ? strndup_user+0x39/0xd0 [ 227.697282] [<c215fe1c>] SyS_mount+0x7c/0xb0 [ 227.700612] [<c27e4860>] syscall_call+0x7/0xb [ 227.703910] Code: e8 07 83 e0 02 29 c3 0f af 5d c8 8b 45 e0 8b 55 e4 85 d2 89 45 a4 c7 45 ac 00 00 00 00 74 5 [ 227.711334] EIP: [<c22929c3>] __btrfs_map_block+0x1b3/0x13d0 SS:ESP 0068:c4a49b1c [ 227.714805] ---[ end trace 878405379da34309 ]--- --- Regards, Alexandru Cornea QA Security Engineer SSG OTC Romania Desk: +40 31 845 1150 iNET: 88451150 --- Regards, Alexandru Cornea QA Security Engineer SSG OTC Romania Desk: +40 31 845 1150 iNET: 88451150 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
