Date
May 12, 2025, 6:12 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.960378] ================================================================== [ 18.960973] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x170/0x310 [ 18.961783] Write of size 33 at addr fff00000c5a02d00 by task kunit_try_catch/175 [ 18.962522] [ 18.962963] CPU: 1 UID: 0 PID: 175 Comm: kunit_try_catch Tainted: G B N 6.14.7-rc1 #1 [ 18.963215] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.963289] Hardware name: linux,dummy-virt (DT) [ 18.963390] Call trace: [ 18.963459] show_stack+0x20/0x38 (C) [ 18.963576] dump_stack_lvl+0x8c/0xd0 [ 18.963686] print_report+0x118/0x608 [ 18.963802] kasan_report+0xdc/0x128 [ 18.963902] kasan_check_range+0x100/0x1a8 [ 18.964018] __asan_memset+0x34/0x78 [ 18.964123] kmalloc_uaf_memset+0x170/0x310 [ 18.964225] kunit_try_run_case+0x170/0x3f0 [ 18.964344] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.964501] kthread+0x318/0x620 [ 18.964624] ret_from_fork+0x10/0x20 [ 18.964728] [ 18.969834] Allocated by task 175: [ 18.970384] kasan_save_stack+0x3c/0x68 [ 18.971012] kasan_save_track+0x20/0x40 [ 18.971455] kasan_save_alloc_info+0x40/0x58 [ 18.971965] __kasan_kmalloc+0xd4/0xd8 [ 18.972525] __kmalloc_cache_noprof+0x15c/0x3c0 [ 18.972773] kmalloc_uaf_memset+0xb8/0x310 [ 18.973326] kunit_try_run_case+0x170/0x3f0 [ 18.973877] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.974193] kthread+0x318/0x620 [ 18.974530] ret_from_fork+0x10/0x20 [ 18.974977] [ 18.975307] Freed by task 175: [ 18.975763] kasan_save_stack+0x3c/0x68 [ 18.976227] kasan_save_track+0x20/0x40 [ 18.976682] kasan_save_free_info+0x4c/0x78 [ 18.977224] __kasan_slab_free+0x6c/0x98 [ 18.977680] kfree+0x214/0x3c8 [ 18.978027] kmalloc_uaf_memset+0x11c/0x310 [ 18.978649] kunit_try_run_case+0x170/0x3f0 [ 18.979132] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.979465] kthread+0x318/0x620 [ 18.979711] ret_from_fork+0x10/0x20 [ 18.980092] [ 18.980346] The buggy address belongs to the object at fff00000c5a02d00 [ 18.980346] which belongs to the cache kmalloc-64 of size 64 [ 18.981414] The buggy address is located 0 bytes inside of [ 18.981414] freed 64-byte region [fff00000c5a02d00, fff00000c5a02d40) [ 18.982617] [ 18.982927] The buggy address belongs to the physical page: [ 18.983325] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105a02 [ 18.984098] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.984881] page_type: f5(slab) [ 18.985366] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 18.986022] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 18.986703] page dumped because: kasan: bad access detected [ 18.987326] [ 18.987599] Memory state around the buggy address: [ 18.988130] fff00000c5a02c00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 18.988606] fff00000c5a02c80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 18.989335] >fff00000c5a02d00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 18.989900] ^ [ 18.990353] fff00000c5a02d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.991110] fff00000c5a02e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.991890] ==================================================================
[ 12.724673] ================================================================== [ 12.725344] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x1a4/0x360 [ 12.725631] Write of size 33 at addr ffff888101b2b400 by task kunit_try_catch/194 [ 12.725989] [ 12.726344] CPU: 1 UID: 0 PID: 194 Comm: kunit_try_catch Tainted: G B N 6.14.7-rc1 #1 [ 12.726395] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.726407] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.726428] Call Trace: [ 12.726441] <TASK> [ 12.726460] dump_stack_lvl+0x73/0xb0 [ 12.726489] print_report+0xd1/0x650 [ 12.726512] ? __virt_addr_valid+0x1db/0x2d0 [ 12.726534] ? kmalloc_uaf_memset+0x1a4/0x360 [ 12.726555] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.726580] ? kmalloc_uaf_memset+0x1a4/0x360 [ 12.726600] kasan_report+0x140/0x180 [ 12.726621] ? kmalloc_uaf_memset+0x1a4/0x360 [ 12.726645] kasan_check_range+0x10c/0x1c0 [ 12.726668] __asan_memset+0x27/0x50 [ 12.726690] kmalloc_uaf_memset+0x1a4/0x360 [ 12.726710] ? __pfx_kmalloc_uaf_memset+0x10/0x10 [ 12.726731] ? __schedule+0xce8/0x2840 [ 12.726756] ? __pfx_read_tsc+0x10/0x10 [ 12.726778] ? ktime_get_ts64+0x86/0x230 [ 12.726805] kunit_try_run_case+0x1a6/0x480 [ 12.726829] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.726862] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 12.726883] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.726907] ? __kthread_parkme+0x82/0x160 [ 12.726930] ? preempt_count_sub+0x50/0x80 [ 12.726955] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.726977] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.727002] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.727027] kthread+0x324/0x6e0 [ 12.727048] ? trace_preempt_on+0x20/0xc0 [ 12.727071] ? __pfx_kthread+0x10/0x10 [ 12.727092] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.727115] ? calculate_sigpending+0x7b/0xa0 [ 12.727137] ? __pfx_kthread+0x10/0x10 [ 12.727159] ret_from_fork+0x41/0x80 [ 12.727194] ? __pfx_kthread+0x10/0x10 [ 12.727215] ret_from_fork_asm+0x1a/0x30 [ 12.727246] </TASK> [ 12.727257] [ 12.734118] Allocated by task 194: [ 12.734669] kasan_save_stack+0x45/0x70 [ 12.734910] kasan_save_track+0x18/0x40 [ 12.735319] kasan_save_alloc_info+0x3b/0x50 [ 12.735544] __kasan_kmalloc+0xb7/0xc0 [ 12.735734] __kmalloc_cache_noprof+0x18a/0x420 [ 12.735981] kmalloc_uaf_memset+0xaa/0x360 [ 12.736246] kunit_try_run_case+0x1a6/0x480 [ 12.736431] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.736608] kthread+0x324/0x6e0 [ 12.736777] ret_from_fork+0x41/0x80 [ 12.736966] ret_from_fork_asm+0x1a/0x30 [ 12.737224] [ 12.737324] Freed by task 194: [ 12.737452] kasan_save_stack+0x45/0x70 [ 12.737644] kasan_save_track+0x18/0x40 [ 12.737806] kasan_save_free_info+0x3f/0x60 [ 12.737963] __kasan_slab_free+0x56/0x70 [ 12.738100] kfree+0x224/0x3f0 [ 12.738216] kmalloc_uaf_memset+0x12c/0x360 [ 12.738361] kunit_try_run_case+0x1a6/0x480 [ 12.738553] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.738935] kthread+0x324/0x6e0 [ 12.739109] ret_from_fork+0x41/0x80 [ 12.739294] ret_from_fork_asm+0x1a/0x30 [ 12.739780] [ 12.739904] The buggy address belongs to the object at ffff888101b2b400 [ 12.739904] which belongs to the cache kmalloc-64 of size 64 [ 12.740456] The buggy address is located 0 bytes inside of [ 12.740456] freed 64-byte region [ffff888101b2b400, ffff888101b2b440) [ 12.740801] [ 12.740888] The buggy address belongs to the physical page: [ 12.741092] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101b2b [ 12.741445] flags: 0x200000000000000(node=0|zone=2) [ 12.741679] page_type: f5(slab) [ 12.741926] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 12.742453] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 12.742739] page dumped because: kasan: bad access detected [ 12.742916] [ 12.742993] Memory state around the buggy address: [ 12.743251] ffff888101b2b300: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.744052] ffff888101b2b380: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.744330] >ffff888101b2b400: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.744546] ^ [ 12.744745] ffff888101b2b480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.745225] ffff888101b2b500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.745567] ==================================================================