Date
June 18, 2025, 6:43 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.884903] ================================================================== [ 19.885084] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2cc/0x2f8 [ 19.885225] Read of size 1 at addr fff00000c76cc000 by task kunit_try_catch/158 [ 19.885345] [ 19.885430] CPU: 0 UID: 0 PID: 158 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc2-next-20250618 #1 PREEMPT [ 19.885624] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.885681] Hardware name: linux,dummy-virt (DT) [ 19.885750] Call trace: [ 19.885800] show_stack+0x20/0x38 (C) [ 19.885906] dump_stack_lvl+0x8c/0xd0 [ 19.886011] print_report+0x118/0x608 [ 19.886334] kasan_report+0xdc/0x128 [ 19.886428] __asan_report_load1_noabort+0x20/0x30 [ 19.886531] kmalloc_large_uaf+0x2cc/0x2f8 [ 19.887414] kunit_try_run_case+0x170/0x3f0 [ 19.887810] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.887938] kthread+0x328/0x630 [ 19.888049] ret_from_fork+0x10/0x20 [ 19.888985] [ 19.889071] The buggy address belongs to the physical page: [ 19.889219] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1076cc [ 19.889623] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.889781] raw: 0bfffe0000000000 ffffc1ffc31db408 fff00000da473c80 0000000000000000 [ 19.889893] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 19.889982] page dumped because: kasan: bad access detected [ 19.890265] [ 19.890466] Memory state around the buggy address: [ 19.890548] fff00000c76cbf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.890654] fff00000c76cbf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.890748] >fff00000c76cc000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.891335] ^ [ 19.891472] fff00000c76cc080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.891575] fff00000c76cc100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.891661] ==================================================================
[ 10.668232] ================================================================== [ 10.668635] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2f1/0x340 [ 10.668861] Read of size 1 at addr ffff888102c40000 by task kunit_try_catch/174 [ 10.669081] [ 10.669160] CPU: 0 UID: 0 PID: 174 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc2-next-20250618 #1 PREEMPT(voluntary) [ 10.669217] Tainted: [B]=BAD_PAGE, [N]=TEST [ 10.669229] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 10.669249] Call Trace: [ 10.669262] <TASK> [ 10.669278] dump_stack_lvl+0x73/0xb0 [ 10.669303] print_report+0xd1/0x650 [ 10.669323] ? __virt_addr_valid+0x1db/0x2d0 [ 10.669344] ? kmalloc_large_uaf+0x2f1/0x340 [ 10.669362] ? kasan_addr_to_slab+0x11/0xa0 [ 10.669382] ? kmalloc_large_uaf+0x2f1/0x340 [ 10.669401] kasan_report+0x141/0x180 [ 10.669422] ? kmalloc_large_uaf+0x2f1/0x340 [ 10.669445] __asan_report_load1_noabort+0x18/0x20 [ 10.669467] kmalloc_large_uaf+0x2f1/0x340 [ 10.669486] ? __pfx_kmalloc_large_uaf+0x10/0x10 [ 10.669506] ? __schedule+0x10cc/0x2b60 [ 10.669526] ? __pfx_read_tsc+0x10/0x10 [ 10.669546] ? ktime_get_ts64+0x86/0x230 [ 10.669570] kunit_try_run_case+0x1a5/0x480 [ 10.669592] ? __pfx_kunit_try_run_case+0x10/0x10 [ 10.669613] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 10.669633] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 10.669654] ? __kthread_parkme+0x82/0x180 [ 10.669673] ? preempt_count_sub+0x50/0x80 [ 10.669697] ? __pfx_kunit_try_run_case+0x10/0x10 [ 10.669719] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 10.669739] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 10.669760] kthread+0x337/0x6f0 [ 10.669778] ? trace_preempt_on+0x20/0xc0 [ 10.669801] ? __pfx_kthread+0x10/0x10 [ 10.669819] ? _raw_spin_unlock_irq+0x47/0x80 [ 10.669838] ? calculate_sigpending+0x7b/0xa0 [ 10.669861] ? __pfx_kthread+0x10/0x10 [ 10.669880] ret_from_fork+0x116/0x1d0 [ 10.669897] ? __pfx_kthread+0x10/0x10 [ 10.669916] ret_from_fork_asm+0x1a/0x30 [ 10.669945] </TASK> [ 10.669955] [ 10.680237] The buggy address belongs to the physical page: [ 10.680978] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102c40 [ 10.681817] flags: 0x200000000000000(node=0|zone=2) [ 10.682335] raw: 0200000000000000 ffffea00040b1108 ffff888154639fc0 0000000000000000 [ 10.683106] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 10.683901] page dumped because: kasan: bad access detected [ 10.684538] [ 10.684703] Memory state around the buggy address: [ 10.685163] ffff888102c3ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 10.685921] ffff888102c3ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 10.686606] >ffff888102c40000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 10.687151] ^ [ 10.687447] ffff888102c40080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 10.688058] ffff888102c40100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 10.688548] ==================================================================