Date
Dec. 6, 2024, 3:11 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 31.535848] ================================================================== [ 31.536893] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x170/0x310 [ 31.537797] Write of size 33 at addr fff00000c66d2400 by task kunit_try_catch/175 [ 31.538448] [ 31.538885] CPU: 0 UID: 0 PID: 175 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241206 #1 [ 31.540479] Tainted: [B]=BAD_PAGE, [N]=TEST [ 31.541100] Hardware name: linux,dummy-virt (DT) [ 31.541617] Call trace: [ 31.542085] show_stack+0x20/0x38 (C) [ 31.543048] dump_stack_lvl+0x8c/0xd0 [ 31.543706] print_report+0x118/0x5e0 [ 31.544295] kasan_report+0xc8/0x118 [ 31.544870] kasan_check_range+0x100/0x1a8 [ 31.545446] __asan_memset+0x34/0x78 [ 31.546102] kmalloc_uaf_memset+0x170/0x310 [ 31.547051] kunit_try_run_case+0x14c/0x3d0 [ 31.547701] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.548483] kthread+0x24c/0x2d0 [ 31.549048] ret_from_fork+0x10/0x20 [ 31.549638] [ 31.549986] Allocated by task 175: [ 31.550793] kasan_save_stack+0x3c/0x68 [ 31.551324] kasan_save_track+0x20/0x40 [ 31.551973] kasan_save_alloc_info+0x40/0x58 [ 31.552657] __kasan_kmalloc+0xd4/0xd8 [ 31.553235] __kmalloc_cache_noprof+0x15c/0x3c0 [ 31.553775] kmalloc_uaf_memset+0xb8/0x310 [ 31.554721] kunit_try_run_case+0x14c/0x3d0 [ 31.555365] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.556143] kthread+0x24c/0x2d0 [ 31.556743] ret_from_fork+0x10/0x20 [ 31.557339] [ 31.557718] Freed by task 175: [ 31.559206] kasan_save_stack+0x3c/0x68 [ 31.559792] kasan_save_track+0x20/0x40 [ 31.560456] kasan_save_free_info+0x4c/0x78 [ 31.561061] __kasan_slab_free+0x6c/0x98 [ 31.561680] kfree+0x114/0x3c8 [ 31.562236] kmalloc_uaf_memset+0x11c/0x310 [ 31.562966] kunit_try_run_case+0x14c/0x3d0 [ 31.563772] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.564619] kthread+0x24c/0x2d0 [ 31.565262] ret_from_fork+0x10/0x20 [ 31.565911] [ 31.566595] The buggy address belongs to the object at fff00000c66d2400 [ 31.566595] which belongs to the cache kmalloc-64 of size 64 [ 31.567877] The buggy address is located 0 bytes inside of [ 31.567877] freed 64-byte region [fff00000c66d2400, fff00000c66d2440) [ 31.569158] [ 31.569589] The buggy address belongs to the physical page: [ 31.570495] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1066d2 [ 31.571483] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 31.572335] page_type: f5(slab) [ 31.572819] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 31.573790] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 31.575011] page dumped because: kasan: bad access detected [ 31.575716] [ 31.576101] Memory state around the buggy address: [ 31.576856] fff00000c66d2300: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 31.577685] fff00000c66d2380: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 31.579006] >fff00000c66d2400: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 31.579946] ^ [ 31.580695] fff00000c66d2480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.581710] fff00000c66d2500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.582452] ==================================================================
[ 24.142317] ================================================================== [ 24.143137] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x1a4/0x360 [ 24.143830] Write of size 33 at addr ffff888102470c00 by task kunit_try_catch/194 [ 24.144769] [ 24.144988] CPU: 1 UID: 0 PID: 194 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241206 #1 [ 24.145686] Tainted: [B]=BAD_PAGE, [N]=TEST [ 24.146108] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 24.147226] Call Trace: [ 24.147450] <TASK> [ 24.147853] dump_stack_lvl+0x73/0xb0 [ 24.148742] print_report+0xd1/0x640 [ 24.149289] ? __virt_addr_valid+0x1db/0x2d0 [ 24.150248] ? kasan_complete_mode_report_info+0x64/0x200 [ 24.150807] kasan_report+0x102/0x140 [ 24.152515] ? kmalloc_uaf_memset+0x1a4/0x360 [ 24.152894] ? kmalloc_uaf_memset+0x1a4/0x360 [ 24.153670] kasan_check_range+0x10c/0x1c0 [ 24.154453] __asan_memset+0x27/0x50 [ 24.154750] kmalloc_uaf_memset+0x1a4/0x360 [ 24.155737] ? __pfx_kmalloc_uaf_memset+0x10/0x10 [ 24.156772] ? __schedule+0xc70/0x27e0 [ 24.157429] ? __pfx_read_tsc+0x10/0x10 [ 24.158153] ? ktime_get_ts64+0x86/0x230 [ 24.159691] kunit_try_run_case+0x1b3/0x490 [ 24.160455] ? __pfx_kunit_try_run_case+0x10/0x10 [ 24.161750] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 24.162345] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 24.162799] ? __kthread_parkme+0x82/0x160 [ 24.163792] ? preempt_count_sub+0x50/0x80 [ 24.164350] ? __pfx_kunit_try_run_case+0x10/0x10 [ 24.164833] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 24.165541] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.167589] kthread+0x257/0x310 [ 24.168207] ? __pfx_kthread+0x10/0x10 [ 24.168652] ret_from_fork+0x41/0x80 [ 24.169391] ? __pfx_kthread+0x10/0x10 [ 24.171065] ret_from_fork_asm+0x1a/0x30 [ 24.171543] </TASK> [ 24.172097] [ 24.172978] Allocated by task 194: [ 24.173649] kasan_save_stack+0x3d/0x60 [ 24.174132] kasan_save_track+0x18/0x40 [ 24.174546] kasan_save_alloc_info+0x3b/0x50 [ 24.176604] __kasan_kmalloc+0xb7/0xc0 [ 24.177329] __kmalloc_cache_noprof+0x184/0x410 [ 24.178533] kmalloc_uaf_memset+0xaa/0x360 [ 24.179061] kunit_try_run_case+0x1b3/0x490 [ 24.179508] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.180060] kthread+0x257/0x310 [ 24.181953] ret_from_fork+0x41/0x80 [ 24.182328] ret_from_fork_asm+0x1a/0x30 [ 24.183085] [ 24.183297] Freed by task 194: [ 24.183626] kasan_save_stack+0x3d/0x60 [ 24.184036] kasan_save_track+0x18/0x40 [ 24.184304] kasan_save_free_info+0x3f/0x60 [ 24.185739] __kasan_slab_free+0x56/0x70 [ 24.186816] kfree+0x123/0x3f0 [ 24.188180] kmalloc_uaf_memset+0x12c/0x360 [ 24.189143] kunit_try_run_case+0x1b3/0x490 [ 24.190110] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.190606] kthread+0x257/0x310 [ 24.190980] ret_from_fork+0x41/0x80 [ 24.191984] ret_from_fork_asm+0x1a/0x30 [ 24.192293] [ 24.192429] The buggy address belongs to the object at ffff888102470c00 [ 24.192429] which belongs to the cache kmalloc-64 of size 64 [ 24.195025] The buggy address is located 0 bytes inside of [ 24.195025] freed 64-byte region [ffff888102470c00, ffff888102470c40) [ 24.197223] [ 24.197830] The buggy address belongs to the physical page: [ 24.199279] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102470 [ 24.200384] flags: 0x200000000000000(node=0|zone=2) [ 24.200819] page_type: f5(slab) [ 24.201306] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 24.203106] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 24.203732] page dumped because: kasan: bad access detected [ 24.204771] [ 24.205104] Memory state around the buggy address: [ 24.205693] ffff888102470b00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 24.208160] ffff888102470b80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 24.208686] >ffff888102470c00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 24.208991] ^ [ 24.209149] ffff888102470c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.209416] ffff888102470d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.209681] ==================================================================