Date
May 29, 2025, 7:10 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 21.079826] ================================================================== [ 21.080015] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2cc/0x2f8 [ 21.080164] Read of size 1 at addr fff00000c7894000 by task kunit_try_catch/148 [ 21.080281] [ 21.081471] CPU: 0 UID: 0 PID: 148 Comm: kunit_try_catch Tainted: G B N 6.15.0-next-20250529 #1 PREEMPT [ 21.082321] Tainted: [B]=BAD_PAGE, [N]=TEST [ 21.082523] Hardware name: linux,dummy-virt (DT) [ 21.082781] Call trace: [ 21.083004] show_stack+0x20/0x38 (C) [ 21.083409] dump_stack_lvl+0x8c/0xd0 [ 21.083645] print_report+0x118/0x608 [ 21.084262] kasan_report+0xdc/0x128 [ 21.084914] __asan_report_load1_noabort+0x20/0x30 [ 21.085362] kmalloc_large_uaf+0x2cc/0x2f8 [ 21.085703] kunit_try_run_case+0x170/0x3f0 [ 21.085958] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.086521] kthread+0x328/0x630 [ 21.086620] ret_from_fork+0x10/0x20 [ 21.086713] [ 21.086756] The buggy address belongs to the physical page: [ 21.086833] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107894 [ 21.087976] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 21.088307] raw: 0bfffe0000000000 ffffc1ffc31e2608 fff00000da448c40 0000000000000000 [ 21.088497] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 21.088605] page dumped because: kasan: bad access detected [ 21.089153] [ 21.089341] Memory state around the buggy address: [ 21.089728] fff00000c7893f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.089868] fff00000c7893f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.091206] >fff00000c7894000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 21.091314] ^ [ 21.091431] fff00000c7894080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 21.091541] fff00000c7894100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 21.091758] ==================================================================
[ 10.423366] ================================================================== [ 10.424112] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2f1/0x340 [ 10.424439] Read of size 1 at addr ffff8881024c0000 by task kunit_try_catch/165 [ 10.424792] [ 10.424892] CPU: 0 UID: 0 PID: 165 Comm: kunit_try_catch Tainted: G B N 6.15.0-next-20250529 #1 PREEMPT(voluntary) [ 10.424937] Tainted: [B]=BAD_PAGE, [N]=TEST [ 10.424949] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 10.424968] Call Trace: [ 10.424980] <TASK> [ 10.424996] dump_stack_lvl+0x73/0xb0 [ 10.425021] print_report+0xd1/0x650 [ 10.425044] ? __virt_addr_valid+0x1db/0x2d0 [ 10.425067] ? kmalloc_large_uaf+0x2f1/0x340 [ 10.425087] ? kasan_addr_to_slab+0x11/0xa0 [ 10.425108] ? kmalloc_large_uaf+0x2f1/0x340 [ 10.425129] kasan_report+0x141/0x180 [ 10.425151] ? kmalloc_large_uaf+0x2f1/0x340 [ 10.425177] __asan_report_load1_noabort+0x18/0x20 [ 10.425197] kmalloc_large_uaf+0x2f1/0x340 [ 10.425265] ? __pfx_kmalloc_large_uaf+0x10/0x10 [ 10.425299] ? __schedule+0x10cc/0x2b60 [ 10.425323] ? __pfx_read_tsc+0x10/0x10 [ 10.425343] ? ktime_get_ts64+0x86/0x230 [ 10.425368] kunit_try_run_case+0x1a5/0x480 [ 10.425389] ? __pfx_kunit_try_run_case+0x10/0x10 [ 10.425408] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 10.425431] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 10.425455] ? __kthread_parkme+0x82/0x180 [ 10.425475] ? preempt_count_sub+0x50/0x80 [ 10.425498] ? __pfx_kunit_try_run_case+0x10/0x10 [ 10.425518] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 10.425542] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 10.425566] kthread+0x337/0x6f0 [ 10.425585] ? trace_preempt_on+0x20/0xc0 [ 10.425618] ? __pfx_kthread+0x10/0x10 [ 10.425639] ? _raw_spin_unlock_irq+0x47/0x80 [ 10.425660] ? calculate_sigpending+0x7b/0xa0 [ 10.425684] ? __pfx_kthread+0x10/0x10 [ 10.425705] ret_from_fork+0x116/0x1d0 [ 10.425723] ? __pfx_kthread+0x10/0x10 [ 10.425743] ret_from_fork_asm+0x1a/0x30 [ 10.425773] </TASK> [ 10.425796] [ 10.437208] The buggy address belongs to the physical page: [ 10.437735] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1024c0 [ 10.438539] flags: 0x200000000000000(node=0|zone=2) [ 10.439169] raw: 0200000000000000 ffff888154639f80 ffff888154639f80 0000000000000000 [ 10.439929] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 10.440432] page dumped because: kasan: bad access detected [ 10.440622] [ 10.440696] Memory state around the buggy address: [ 10.440972] ffff8881024bff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 10.441754] ffff8881024bff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 10.442531] >ffff8881024c0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 10.443268] ^ [ 10.443646] ffff8881024c0080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 10.444191] ffff8881024c0100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 10.444420] ==================================================================