Messages in this thread |  | | From | Dipanjan Das <> | Date | Sun, 17 Jul 2022 15:24:33 -0700 | Subject | KASAN: vmalloc-out-of-bounds Read in cleanup_bitmap_list |
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Hi,
We would like to report the following bug which has been found by our modified version of syzkaller.
====================================================== description: KASAN: vmalloc-out-of-bounds Read in cleanup_bitmap_list affected file: fs/reiserfs/journal.c kernel version: 5.19-rc6 kernel commit: 32346491ddf24599decca06190ebca03ff9de7f8 git tree: upstream kernel config: attached crash reproducer: none ====================================================== Crash log:
BUG: KASAN: vmalloc-out-of-bounds in cleanup_bitmap_list.isra.0.part.0+0x4a0/0x5e0 fs/reiserfs/journal.c:231 Read of size 8 at addr ffffc900136dd008 by task syz-executor.2/13172
CPU: 0 PID: 13172 Comm: syz-executor.2 Tainted: G OE 5.19.0-rc6-g2eae0556bb9d #2 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:313 [inline] print_report.cold+0x176/0x659 mm/kasan/report.c:429 kasan_report+0x8a/0x1b0 mm/kasan/report.c:491 cleanup_bitmap_list.isra.0.part.0+0x4a0/0x5e0 fs/reiserfs/journal.c:231 cleanup_bitmap_list fs/reiserfs/journal.c:227 [inline] free_list_bitmaps+0x68/0x100 fs/reiserfs/journal.c:249 free_journal_ram+0xfc/0x500 fs/reiserfs/journal.c:1887 do_journal_release fs/reiserfs/journal.c:1960 [inline] journal_release_error+0x72/0x90 fs/reiserfs/journal.c:1978 reiserfs_fill_super+0x114d/0x2f10 fs/reiserfs/super.c:2225 mount_bdev+0x34d/0x410 fs/super.c:1367 legacy_get_tree+0x105/0x220 fs/fs_context.c:610 vfs_get_tree+0x89/0x2f0 fs/super.c:1497 do_new_mount fs/namespace.c:3040 [inline] path_mount+0x1228/0x1cb0 fs/namespace.c:3370 do_mount+0xf3/0x110 fs/namespace.c:3383 __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __x64_sys_mount+0x18f/0x230 fs/namespace.c:3568 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 RIP: 0033:0x7f121408fe8e Code: 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f121266a9f8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f121408fe8e RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f121266aa50 RBP: 00007f121266aa90 R08: 00007f121266aa90 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000 R13: 0000000020000100 R14: 00007f121266aa50 R15: 0000000020000040 </TASK>
The buggy address belongs to the virtual mapping at [ffffc900136dd000, ffffc900136df000) created by: reiserfs_allocate_list_bitmaps+0x54/0x100 fs/reiserfs/journal.c:290
The buggy address belongs to the physical page: page:ffffea00054c2700 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x15309c flags: 0x17ff00000000000(node=0|zone=2|lastcpupid=0x7ff) raw: 017ff00000000000 0000000000000000 dead000000000122 0000000000000000 raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2dc2(GFP_KERNEL|__GFP_HIGHMEM|__GFP_NOWARN|__GFP_ZERO), pid 13172, tgid 13167 (syz-executor.2), ts 141798727963, free_ts 133661424124 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook mm/page_alloc.c:2449 [inline] prep_new_page+0x297/0x330 mm/page_alloc.c:2456 get_page_from_freelist+0x2142/0x3c80 mm/page_alloc.c:4198 __alloc_pages+0x321/0x710 mm/page_alloc.c:5426 __alloc_pages_bulk+0x974/0x1590 mm/page_alloc.c:5374 alloc_pages_bulk_array_mempolicy+0x12d/0x430 mm/mempolicy.c:2367 vm_area_alloc_pages mm/vmalloc.c:2899 [inline] __vmalloc_area_node mm/vmalloc.c:2995 [inline] __vmalloc_node_range+0x52f/0x1360 mm/vmalloc.c:3165 __vmalloc_node mm/vmalloc.c:3230 [inline] vzalloc+0x67/0x80 mm/vmalloc.c:3303 reiserfs_allocate_list_bitmaps+0x54/0x100 fs/reiserfs/journal.c:290 journal_init+0x3ca/0x64d0 fs/reiserfs/journal.c:2732 reiserfs_fill_super+0xbbb/0x2f10 fs/reiserfs/super.c:2024 mount_bdev+0x34d/0x410 fs/super.c:1367 legacy_get_tree+0x105/0x220 fs/fs_context.c:610 vfs_get_tree+0x89/0x2f0 fs/super.c:1497 do_new_mount fs/namespace.c:3040 [inline] path_mount+0x1228/0x1cb0 fs/namespace.c:3370 do_mount+0xf3/0x110 fs/namespace.c:3383 __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __x64_sys_mount+0x18f/0x230 fs/namespace.c:3568 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1371 [inline] free_pcp_prepare+0x51f/0xd00 mm/page_alloc.c:1421 free_unref_page_prepare mm/page_alloc.c:3343 [inline] free_unref_page+0x19/0x5b0 mm/page_alloc.c:3438 kasan_depopulate_vmalloc_pte+0x5c/0x70 mm/kasan/shadow.c:359 apply_to_pte_range mm/memory.c:2625 [inline] apply_to_pmd_range mm/memory.c:2669 [inline] apply_to_pud_range mm/memory.c:2705 [inline] apply_to_p4d_range mm/memory.c:2741 [inline] __apply_to_page_range+0x66e/0xf50 mm/memory.c:2775 kasan_release_vmalloc+0xa2/0xb0 mm/kasan/shadow.c:469 __purge_vmap_area_lazy+0x8fe/0x1c90 mm/vmalloc.c:1722 drain_vmap_area_work+0x52/0xe0 mm/vmalloc.c:1751 process_one_work+0x9cc/0x1650 kernel/workqueue.c:2289 worker_thread+0x623/0x1070 kernel/workqueue.c:2436 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
Memory state around the buggy address: ffffc900136dcf00: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ffffc900136dcf80: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 >ffffc900136dd000: 00 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ^ ffffc900136dd080: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ffffc900136dd100: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ==================================================================
-- Thanks & Regards,
Dipanjan [unhandled content-type:application/octet-stream] |  |