Date
July 8, 2025, 11:10 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 30.915688] ================================================================== [ 30.915771] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2cc/0x2f8 [ 30.915823] Read of size 1 at addr fff00000c9a24000 by task kunit_try_catch/179 [ 30.915870] [ 30.915906] CPU: 0 UID: 0 PID: 179 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5-next-20250708 #1 PREEMPT [ 30.915988] Tainted: [B]=BAD_PAGE, [N]=TEST [ 30.916024] Hardware name: linux,dummy-virt (DT) [ 30.916054] Call trace: [ 30.916077] show_stack+0x20/0x38 (C) [ 30.916122] dump_stack_lvl+0x8c/0xd0 [ 30.916168] print_report+0x118/0x5d0 [ 30.916324] kasan_report+0xdc/0x128 [ 30.916381] __asan_report_load1_noabort+0x20/0x30 [ 30.916438] kmalloc_large_uaf+0x2cc/0x2f8 [ 30.916484] kunit_try_run_case+0x170/0x3f0 [ 30.916579] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 30.916697] kthread+0x328/0x630 [ 30.916741] ret_from_fork+0x10/0x20 [ 30.916798] [ 30.916825] The buggy address belongs to the physical page: [ 30.916855] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x109a24 [ 30.916905] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 30.916964] raw: 0bfffe0000000000 ffffc1ffc3268a08 fff00000da45cc40 0000000000000000 [ 30.917012] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 30.917050] page dumped because: kasan: bad access detected [ 30.917080] [ 30.917098] Memory state around the buggy address: [ 30.917127] fff00000c9a23f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.917168] fff00000c9a23f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.917220] >fff00000c9a24000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 30.917256] ^ [ 30.917308] fff00000c9a24080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 30.917349] fff00000c9a24100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 30.917384] ==================================================================
[ 22.880208] ================================================================== [ 22.880663] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2f1/0x340 [ 22.881000] Read of size 1 at addr ffff888106314000 by task kunit_try_catch/196 [ 22.881447] [ 22.881655] CPU: 0 UID: 0 PID: 196 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5-next-20250708 #1 PREEMPT(voluntary) [ 22.881726] Tainted: [B]=BAD_PAGE, [N]=TEST [ 22.881738] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 22.881761] Call Trace: [ 22.881903] <TASK> [ 22.881928] dump_stack_lvl+0x73/0xb0 [ 22.881961] print_report+0xd1/0x610 [ 22.881986] ? __virt_addr_valid+0x1db/0x2d0 [ 22.882011] ? kmalloc_large_uaf+0x2f1/0x340 [ 22.882031] ? kasan_addr_to_slab+0x11/0xa0 [ 22.882052] ? kmalloc_large_uaf+0x2f1/0x340 [ 22.882073] kasan_report+0x141/0x180 [ 22.882096] ? kmalloc_large_uaf+0x2f1/0x340 [ 22.882121] __asan_report_load1_noabort+0x18/0x20 [ 22.882148] kmalloc_large_uaf+0x2f1/0x340 [ 22.882168] ? __pfx_kmalloc_large_uaf+0x10/0x10 [ 22.882190] ? __schedule+0x10cc/0x2b60 [ 22.882219] ? __pfx_read_tsc+0x10/0x10 [ 22.882256] ? ktime_get_ts64+0x86/0x230 [ 22.882283] kunit_try_run_case+0x1a5/0x480 [ 22.882306] ? __pfx_kunit_try_run_case+0x10/0x10 [ 22.882326] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 22.882348] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 22.882376] ? __kthread_parkme+0x82/0x180 [ 22.882398] ? preempt_count_sub+0x50/0x80 [ 22.882422] ? __pfx_kunit_try_run_case+0x10/0x10 [ 22.882444] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 22.882470] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 22.882497] kthread+0x337/0x6f0 [ 22.882518] ? trace_preempt_on+0x20/0xc0 [ 22.882543] ? __pfx_kthread+0x10/0x10 [ 22.882566] ? _raw_spin_unlock_irq+0x47/0x80 [ 22.882593] ? calculate_sigpending+0x7b/0xa0 [ 22.882622] ? __pfx_kthread+0x10/0x10 [ 22.882645] ret_from_fork+0x116/0x1d0 [ 22.882666] ? __pfx_kthread+0x10/0x10 [ 22.882688] ret_from_fork_asm+0x1a/0x30 [ 22.882723] </TASK> [ 22.882736] [ 22.891705] The buggy address belongs to the physical page: [ 22.892152] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106314 [ 22.892669] flags: 0x200000000000000(node=0|zone=2) [ 22.892852] raw: 0200000000000000 ffffea000418c608 ffff888154839fc0 0000000000000000 [ 22.893590] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 22.894319] page dumped because: kasan: bad access detected [ 22.894687] [ 22.895087] Memory state around the buggy address: [ 22.895345] ffff888106313f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 22.895639] ffff888106313f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 22.896163] >ffff888106314000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 22.896650] ^ [ 22.896938] ffff888106314080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 22.897453] ffff888106314100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 22.897737] ==================================================================