Date
June 2, 2025, 2:13 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.695993] ================================================================== [ 18.696746] BUG: KASAN: slab-use-after-free in kmalloc_uaf_16+0x3bc/0x438 [ 18.697760] Read of size 16 at addr fff00000c58f5f00 by task kunit_try_catch/158 [ 18.698882] [ 18.699121] CPU: 1 UID: 0 PID: 158 Comm: kunit_try_catch Tainted: G B N 6.14.10-rc1 #1 [ 18.699310] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.699375] Hardware name: linux,dummy-virt (DT) [ 18.699453] Call trace: [ 18.699482] show_stack+0x20/0x38 (C) [ 18.699554] dump_stack_lvl+0x8c/0xd0 [ 18.699641] print_report+0x118/0x608 [ 18.699696] kasan_report+0xdc/0x128 [ 18.699747] __asan_report_load16_noabort+0x20/0x30 [ 18.699798] kmalloc_uaf_16+0x3bc/0x438 [ 18.699847] kunit_try_run_case+0x170/0x3f0 [ 18.699899] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.699955] kthread+0x318/0x620 [ 18.700006] ret_from_fork+0x10/0x20 [ 18.700063] [ 18.704071] Allocated by task 158: [ 18.704618] kasan_save_stack+0x3c/0x68 [ 18.705005] kasan_save_track+0x20/0x40 [ 18.705516] kasan_save_alloc_info+0x40/0x58 [ 18.705883] __kasan_kmalloc+0xd4/0xd8 [ 18.707316] __kmalloc_cache_noprof+0x16c/0x3c0 [ 18.707779] kmalloc_uaf_16+0x140/0x438 [ 18.708172] kunit_try_run_case+0x170/0x3f0 [ 18.708550] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.709308] kthread+0x318/0x620 [ 18.709675] ret_from_fork+0x10/0x20 [ 18.710480] [ 18.710967] Freed by task 158: [ 18.711213] kasan_save_stack+0x3c/0x68 [ 18.711632] kasan_save_track+0x20/0x40 [ 18.712252] kasan_save_free_info+0x4c/0x78 [ 18.712664] __kasan_slab_free+0x6c/0x98 [ 18.713202] kfree+0x214/0x3c8 [ 18.713592] kmalloc_uaf_16+0x190/0x438 [ 18.715076] kunit_try_run_case+0x170/0x3f0 [ 18.715427] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.715891] kthread+0x318/0x620 [ 18.716562] ret_from_fork+0x10/0x20 [ 18.717093] [ 18.717357] The buggy address belongs to the object at fff00000c58f5f00 [ 18.717357] which belongs to the cache kmalloc-16 of size 16 [ 18.718702] The buggy address is located 0 bytes inside of [ 18.718702] freed 16-byte region [fff00000c58f5f00, fff00000c58f5f10) [ 18.719671] [ 18.720047] The buggy address belongs to the physical page: [ 18.720377] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1058f5 [ 18.721191] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.721814] page_type: f5(slab) [ 18.722450] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 18.723439] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 18.724222] page dumped because: kasan: bad access detected [ 18.724647] [ 18.725079] Memory state around the buggy address: [ 18.725403] fff00000c58f5e00: 00 02 fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 18.726441] fff00000c58f5e80: fa fb fc fc fa fb fc fc 00 04 fc fc 00 00 fc fc [ 18.726986] >fff00000c58f5f00: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.727781] ^ [ 18.728241] fff00000c58f5f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.728897] fff00000c58f6000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 18.729608] ==================================================================
[ 12.713347] ================================================================== [ 12.713817] BUG: KASAN: slab-use-after-free in kmalloc_uaf_16+0x47d/0x4c0 [ 12.714136] Read of size 16 at addr ffff8881025d03a0 by task kunit_try_catch/176 [ 12.714454] [ 12.714555] CPU: 0 UID: 0 PID: 176 Comm: kunit_try_catch Tainted: G B N 6.14.10-rc1 #1 [ 12.714594] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.714605] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.714624] Call Trace: [ 12.714636] <TASK> [ 12.714652] dump_stack_lvl+0x73/0xb0 [ 12.714679] print_report+0xd1/0x650 [ 12.714703] ? __virt_addr_valid+0x1db/0x2d0 [ 12.714729] ? kmalloc_uaf_16+0x47d/0x4c0 [ 12.714751] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.714779] ? kmalloc_uaf_16+0x47d/0x4c0 [ 12.714802] kasan_report+0x140/0x180 [ 12.714827] ? kmalloc_uaf_16+0x47d/0x4c0 [ 12.714855] __asan_report_load16_noabort+0x18/0x20 [ 12.714881] kmalloc_uaf_16+0x47d/0x4c0 [ 12.714904] ? __pfx_kmalloc_uaf_16+0x10/0x10 [ 12.714928] ? __schedule+0xce8/0x2840 [ 12.714954] ? __pfx_read_tsc+0x10/0x10 [ 12.714978] ? ktime_get_ts64+0x86/0x230 [ 12.715008] kunit_try_run_case+0x1a6/0x480 [ 12.715045] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.715069] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 12.715095] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.715121] ? __kthread_parkme+0x82/0x160 [ 12.715147] ? preempt_count_sub+0x50/0x80 [ 12.715174] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.715200] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.715229] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.715258] kthread+0x324/0x6e0 [ 12.715283] ? trace_preempt_on+0x20/0xc0 [ 12.715309] ? __pfx_kthread+0x10/0x10 [ 12.715334] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.715359] ? calculate_sigpending+0x7b/0xa0 [ 12.715384] ? __pfx_kthread+0x10/0x10 [ 12.715409] ret_from_fork+0x41/0x80 [ 12.715431] ? __pfx_kthread+0x10/0x10 [ 12.715457] ret_from_fork_asm+0x1a/0x30 [ 12.715492] </TASK> [ 12.715502] [ 12.723427] Allocated by task 176: [ 12.724142] kasan_save_stack+0x45/0x70 [ 12.724473] kasan_save_track+0x18/0x40 [ 12.724779] kasan_save_alloc_info+0x3b/0x50 [ 12.724986] __kasan_kmalloc+0xb7/0xc0 [ 12.725173] __kmalloc_cache_noprof+0x18a/0x420 [ 12.725380] kmalloc_uaf_16+0x15c/0x4c0 [ 12.725547] kunit_try_run_case+0x1a6/0x480 [ 12.726336] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.726991] kthread+0x324/0x6e0 [ 12.727234] ret_from_fork+0x41/0x80 [ 12.727416] ret_from_fork_asm+0x1a/0x30 [ 12.727995] [ 12.728110] Freed by task 176: [ 12.728257] kasan_save_stack+0x45/0x70 [ 12.728444] kasan_save_track+0x18/0x40 [ 12.728970] kasan_save_free_info+0x3f/0x60 [ 12.729393] __kasan_slab_free+0x56/0x70 [ 12.729695] kfree+0x224/0x3f0 [ 12.729979] kmalloc_uaf_16+0x1d7/0x4c0 [ 12.730177] kunit_try_run_case+0x1a6/0x480 [ 12.730368] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.730909] kthread+0x324/0x6e0 [ 12.731146] ret_from_fork+0x41/0x80 [ 12.731448] ret_from_fork_asm+0x1a/0x30 [ 12.732088] [ 12.732185] The buggy address belongs to the object at ffff8881025d03a0 [ 12.732185] which belongs to the cache kmalloc-16 of size 16 [ 12.733331] The buggy address is located 0 bytes inside of [ 12.733331] freed 16-byte region [ffff8881025d03a0, ffff8881025d03b0) [ 12.734269] [ 12.734370] The buggy address belongs to the physical page: [ 12.734882] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1025d0 [ 12.735226] flags: 0x200000000000000(node=0|zone=2) [ 12.735435] page_type: f5(slab) [ 12.736041] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 12.736448] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 12.736956] page dumped because: kasan: bad access detected [ 12.737203] [ 12.737289] Memory state around the buggy address: [ 12.737493] ffff8881025d0280: fa fb fc fc 00 02 fc fc 00 05 fc fc 00 02 fc fc [ 12.738356] ffff8881025d0300: 00 02 fc fc 00 02 fc fc 00 02 fc fc fa fb fc fc [ 12.739114] >ffff8881025d0380: 00 00 fc fc fa fb fc fc fc fc fc fc fc fc fc fc [ 12.739836] ^ [ 12.740048] ffff8881025d0400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.740336] ffff8881025d0480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.740916] ==================================================================