Date
May 29, 2025, 7:10 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 21.173448] ================================================================== [ 21.173614] BUG: KASAN: use-after-free in page_alloc_uaf+0x328/0x350 [ 21.173829] Read of size 1 at addr fff00000c78e0000 by task kunit_try_catch/154 [ 21.173948] [ 21.174040] CPU: 1 UID: 0 PID: 154 Comm: kunit_try_catch Tainted: G B N 6.15.0-next-20250529 #1 PREEMPT [ 21.174246] Tainted: [B]=BAD_PAGE, [N]=TEST [ 21.174315] Hardware name: linux,dummy-virt (DT) [ 21.174421] Call trace: [ 21.174509] show_stack+0x20/0x38 (C) [ 21.174701] dump_stack_lvl+0x8c/0xd0 [ 21.174893] print_report+0x118/0x608 [ 21.175068] kasan_report+0xdc/0x128 [ 21.175425] __asan_report_load1_noabort+0x20/0x30 [ 21.175577] page_alloc_uaf+0x328/0x350 [ 21.175851] kunit_try_run_case+0x170/0x3f0 [ 21.176124] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.176422] kthread+0x328/0x630 [ 21.176529] ret_from_fork+0x10/0x20 [ 21.176656] [ 21.176711] The buggy address belongs to the physical page: [ 21.176788] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1078e0 [ 21.176913] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 21.177039] page_type: f0(buddy) [ 21.177511] raw: 0bfffe0000000000 fff00000ff616108 fff00000ff616108 0000000000000000 [ 21.177763] raw: 0000000000000000 0000000000000005 00000000f0000000 0000000000000000 [ 21.177973] page dumped because: kasan: bad access detected [ 21.178049] [ 21.178334] Memory state around the buggy address: [ 21.178501] fff00000c78dff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 21.178639] fff00000c78dff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 21.178763] >fff00000c78e0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 21.179141] ^ [ 21.179225] fff00000c78e0080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 21.179327] fff00000c78e0100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 21.179552] ==================================================================
[ 10.471661] ================================================================== [ 10.472432] BUG: KASAN: use-after-free in page_alloc_uaf+0x356/0x3d0 [ 10.472685] Read of size 1 at addr ffff8881039d0000 by task kunit_try_catch/171 [ 10.473011] [ 10.473134] CPU: 0 UID: 0 PID: 171 Comm: kunit_try_catch Tainted: G B N 6.15.0-next-20250529 #1 PREEMPT(voluntary) [ 10.473182] Tainted: [B]=BAD_PAGE, [N]=TEST [ 10.473195] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 10.473216] Call Trace: [ 10.473228] <TASK> [ 10.473244] dump_stack_lvl+0x73/0xb0 [ 10.473271] print_report+0xd1/0x650 [ 10.473294] ? __virt_addr_valid+0x1db/0x2d0 [ 10.473317] ? page_alloc_uaf+0x356/0x3d0 [ 10.473338] ? kasan_addr_to_slab+0x11/0xa0 [ 10.473359] ? page_alloc_uaf+0x356/0x3d0 [ 10.473453] kasan_report+0x141/0x180 [ 10.473495] ? page_alloc_uaf+0x356/0x3d0 [ 10.473523] __asan_report_load1_noabort+0x18/0x20 [ 10.473543] page_alloc_uaf+0x356/0x3d0 [ 10.473565] ? __pfx_page_alloc_uaf+0x10/0x10 [ 10.473588] ? __schedule+0x10cc/0x2b60 [ 10.473623] ? __pfx_read_tsc+0x10/0x10 [ 10.473645] ? ktime_get_ts64+0x86/0x230 [ 10.473669] kunit_try_run_case+0x1a5/0x480 [ 10.473692] ? __pfx_kunit_try_run_case+0x10/0x10 [ 10.473711] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 10.473736] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 10.473761] ? __kthread_parkme+0x82/0x180 [ 10.473782] ? preempt_count_sub+0x50/0x80 [ 10.473805] ? __pfx_kunit_try_run_case+0x10/0x10 [ 10.473826] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 10.473869] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 10.473893] kthread+0x337/0x6f0 [ 10.473912] ? trace_preempt_on+0x20/0xc0 [ 10.473935] ? __pfx_kthread+0x10/0x10 [ 10.473956] ? _raw_spin_unlock_irq+0x47/0x80 [ 10.474023] ? calculate_sigpending+0x7b/0xa0 [ 10.474048] ? __pfx_kthread+0x10/0x10 [ 10.474089] ret_from_fork+0x116/0x1d0 [ 10.474107] ? __pfx_kthread+0x10/0x10 [ 10.474128] ret_from_fork_asm+0x1a/0x30 [ 10.474159] </TASK> [ 10.474170] [ 10.482041] The buggy address belongs to the physical page: [ 10.482573] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1039d0 [ 10.483529] flags: 0x200000000000000(node=0|zone=2) [ 10.483783] page_type: f0(buddy) [ 10.483979] raw: 0200000000000000 ffff88817fffc460 ffff88817fffc460 0000000000000000 [ 10.484372] raw: 0000000000000000 0000000000000004 00000000f0000000 0000000000000000 [ 10.485409] page dumped because: kasan: bad access detected [ 10.485694] [ 10.485840] Memory state around the buggy address: [ 10.486168] ffff8881039cff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 10.486497] ffff8881039cff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 10.486794] >ffff8881039d0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 10.487208] ^ [ 10.487376] ffff8881039d0080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 10.487707] ffff8881039d0100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 10.487976] ==================================================================