Date
June 7, 2025, 10:40 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 21.854547] ================================================================== [ 21.855634] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2cc/0x2f8 [ 21.856273] Read of size 1 at addr fff00000c64a4000 by task kunit_try_catch/137 [ 21.857087] [ 21.858001] CPU: 1 UID: 0 PID: 137 Comm: kunit_try_catch Tainted: G B N 6.14.11-rc1 #1 [ 21.858221] Tainted: [B]=BAD_PAGE, [N]=TEST [ 21.858297] Hardware name: linux,dummy-virt (DT) [ 21.858516] Call trace: [ 21.858569] show_stack+0x20/0x38 (C) [ 21.858636] dump_stack_lvl+0x8c/0xd0 [ 21.858697] print_report+0x118/0x608 [ 21.858754] kasan_report+0xdc/0x128 [ 21.858809] __asan_report_load1_noabort+0x20/0x30 [ 21.858864] kmalloc_large_uaf+0x2cc/0x2f8 [ 21.858952] kunit_try_run_case+0x170/0x3f0 [ 21.859013] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.859076] kthread+0x318/0x620 [ 21.859129] ret_from_fork+0x10/0x20 [ 21.859186] [ 21.865953] The buggy address belongs to the physical page: [ 21.866516] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1064a4 [ 21.867249] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 21.868185] raw: 0bfffe0000000000 ffffc1ffc3192a08 fff00000da4d3040 0000000000000000 [ 21.869293] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 21.870073] page dumped because: kasan: bad access detected [ 21.870742] [ 21.871136] Memory state around the buggy address: [ 21.871696] fff00000c64a3f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.872515] fff00000c64a3f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.873587] >fff00000c64a4000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 21.874461] ^ [ 21.874786] fff00000c64a4080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 21.875426] fff00000c64a4100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 21.876644] ==================================================================
[ 16.731985] ================================================================== [ 16.733397] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2f3/0x340 [ 16.733858] Read of size 1 at addr ffff8881022ec000 by task kunit_try_catch/156 [ 16.734619] [ 16.734801] CPU: 1 UID: 0 PID: 156 Comm: kunit_try_catch Tainted: G B N 6.14.11-rc1 #1 [ 16.734923] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.734952] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 16.734994] Call Trace: [ 16.735027] <TASK> [ 16.735060] dump_stack_lvl+0x73/0xb0 [ 16.735136] print_report+0xd1/0x650 [ 16.735190] ? __virt_addr_valid+0x1db/0x2d0 [ 16.735243] ? kmalloc_large_uaf+0x2f3/0x340 [ 16.735294] ? kasan_addr_to_slab+0x11/0xa0 [ 16.735357] ? kmalloc_large_uaf+0x2f3/0x340 [ 16.735404] kasan_report+0x140/0x180 [ 16.735451] ? kmalloc_large_uaf+0x2f3/0x340 [ 16.735511] __asan_report_load1_noabort+0x18/0x20 [ 16.735569] kmalloc_large_uaf+0x2f3/0x340 [ 16.735618] ? __pfx_kmalloc_large_uaf+0x10/0x10 [ 16.735670] ? __schedule+0xce8/0x2840 [ 16.735734] ? __pfx_read_tsc+0x10/0x10 [ 16.735780] ? ktime_get_ts64+0x86/0x230 [ 16.735837] kunit_try_run_case+0x1a6/0x480 [ 16.735913] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.735967] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 16.736028] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 16.736088] ? __kthread_parkme+0x82/0x160 [ 16.736145] ? preempt_count_sub+0x50/0x80 [ 16.736201] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.736250] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.736305] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 16.736362] kthread+0x324/0x6e0 [ 16.736412] ? trace_preempt_on+0x20/0xc0 [ 16.736467] ? __pfx_kthread+0x10/0x10 [ 16.736515] ? _raw_spin_unlock_irq+0x47/0x80 [ 16.736571] ? calculate_sigpending+0x7b/0xa0 [ 16.736618] ? __pfx_kthread+0x10/0x10 [ 16.736665] ret_from_fork+0x41/0x80 [ 16.736701] ? __pfx_kthread+0x10/0x10 [ 16.736731] ret_from_fork_asm+0x1a/0x30 [ 16.736771] </TASK> [ 16.736787] [ 16.752656] The buggy address belongs to the physical page: [ 16.753205] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1022ec [ 16.754099] flags: 0x200000000000000(node=0|zone=2) [ 16.754747] raw: 0200000000000000 ffff88815b13ef40 ffff88815b13ef40 0000000000000000 [ 16.755320] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 16.755991] page dumped because: kasan: bad access detected [ 16.756355] [ 16.756562] Memory state around the buggy address: [ 16.757025] ffff8881022ebf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.757861] ffff8881022ebf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.758355] >ffff8881022ec000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 16.759200] ^ [ 16.759927] ffff8881022ec080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 16.760498] ffff8881022ec100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 16.760855] ==================================================================