Date
June 17, 2025, 3:40 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 21.980392] ================================================================== [ 21.980578] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x170/0x310 [ 21.980789] Write of size 33 at addr fff00000c58df180 by task kunit_try_catch/188 [ 21.980916] [ 21.981019] CPU: 0 UID: 0 PID: 188 Comm: kunit_try_catch Tainted: G B N 6.15.3-rc1 #1 PREEMPT [ 21.981228] Tainted: [B]=BAD_PAGE, [N]=TEST [ 21.981306] Hardware name: linux,dummy-virt (DT) [ 21.981388] Call trace: [ 21.981446] show_stack+0x20/0x38 (C) [ 21.981574] dump_stack_lvl+0x8c/0xd0 [ 21.981692] print_report+0x118/0x608 [ 21.981820] kasan_report+0xdc/0x128 [ 21.981930] kasan_check_range+0x100/0x1a8 [ 21.982045] __asan_memset+0x34/0x78 [ 21.982161] kmalloc_uaf_memset+0x170/0x310 [ 21.982282] kunit_try_run_case+0x170/0x3f0 [ 21.982403] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.982538] kthread+0x328/0x630 [ 21.982655] ret_from_fork+0x10/0x20 [ 21.983968] [ 21.984092] Allocated by task 188: [ 21.984180] kasan_save_stack+0x3c/0x68 [ 21.984318] kasan_save_track+0x20/0x40 [ 21.984424] kasan_save_alloc_info+0x40/0x58 [ 21.984594] __kasan_kmalloc+0xd4/0xd8 [ 21.984688] __kmalloc_cache_noprof+0x16c/0x3c0 [ 21.984812] kmalloc_uaf_memset+0xb8/0x310 [ 21.984908] kunit_try_run_case+0x170/0x3f0 [ 21.985008] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.985944] kthread+0x328/0x630 [ 21.986081] ret_from_fork+0x10/0x20 [ 21.986193] [ 21.986234] Freed by task 188: [ 21.986287] kasan_save_stack+0x3c/0x68 [ 21.986512] kasan_save_track+0x20/0x40 [ 21.986655] kasan_save_free_info+0x4c/0x78 [ 21.987034] __kasan_slab_free+0x6c/0x98 [ 21.987223] kfree+0x214/0x3c8 [ 21.987439] kmalloc_uaf_memset+0x11c/0x310 [ 21.987631] kunit_try_run_case+0x170/0x3f0 [ 21.987723] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.987821] kthread+0x328/0x630 [ 21.987904] ret_from_fork+0x10/0x20 [ 21.988470] [ 21.988557] The buggy address belongs to the object at fff00000c58df180 [ 21.988557] which belongs to the cache kmalloc-64 of size 64 [ 21.988947] The buggy address is located 0 bytes inside of [ 21.988947] freed 64-byte region [fff00000c58df180, fff00000c58df1c0) [ 21.989193] [ 21.989240] The buggy address belongs to the physical page: [ 21.989810] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1058df [ 21.990195] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 21.990325] page_type: f5(slab) [ 21.990629] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 21.990771] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 21.990904] page dumped because: kasan: bad access detected [ 21.991098] [ 21.991144] Memory state around the buggy address: [ 21.991349] fff00000c58df080: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 21.991561] fff00000c58df100: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 21.992150] >fff00000c58df180: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 21.992327] ^ [ 21.992406] fff00000c58df200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.992582] fff00000c58df280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.992923] ==================================================================
[ 19.673446] ================================================================== [ 19.674197] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x1a3/0x360 [ 19.674892] Write of size 33 at addr ffff888102eda680 by task kunit_try_catch/206 [ 19.676633] [ 19.677556] CPU: 1 UID: 0 PID: 206 Comm: kunit_try_catch Tainted: G B N 6.15.3-rc1 #1 PREEMPT(voluntary) [ 19.677633] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.677653] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 19.677685] Call Trace: [ 19.677708] <TASK> [ 19.677732] dump_stack_lvl+0x73/0xb0 [ 19.677779] print_report+0xd1/0x650 [ 19.677816] ? __virt_addr_valid+0x1db/0x2d0 [ 19.677850] ? kmalloc_uaf_memset+0x1a3/0x360 [ 19.677883] ? kasan_complete_mode_report_info+0x64/0x200 [ 19.677916] ? kmalloc_uaf_memset+0x1a3/0x360 [ 19.677968] kasan_report+0x141/0x180 [ 19.678051] ? kmalloc_uaf_memset+0x1a3/0x360 [ 19.678124] kasan_check_range+0x10c/0x1c0 [ 19.678156] __asan_memset+0x27/0x50 [ 19.678186] kmalloc_uaf_memset+0x1a3/0x360 [ 19.678218] ? __pfx_kmalloc_uaf_memset+0x10/0x10 [ 19.678251] ? __schedule+0x10cc/0x2b60 [ 19.678310] ? __pfx_read_tsc+0x10/0x10 [ 19.678350] ? ktime_get_ts64+0x86/0x230 [ 19.678390] kunit_try_run_case+0x1a5/0x480 [ 19.678431] ? __pfx_kunit_try_run_case+0x10/0x10 [ 19.678463] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 19.678499] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 19.678532] ? __kthread_parkme+0x82/0x180 [ 19.678565] ? preempt_count_sub+0x50/0x80 [ 19.678602] ? __pfx_kunit_try_run_case+0x10/0x10 [ 19.678636] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.678668] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 19.678701] kthread+0x337/0x6f0 [ 19.678724] ? trace_preempt_on+0x20/0xc0 [ 19.678760] ? __pfx_kthread+0x10/0x10 [ 19.678785] ? _raw_spin_unlock_irq+0x47/0x80 [ 19.678815] ? calculate_sigpending+0x7b/0xa0 [ 19.678847] ? __pfx_kthread+0x10/0x10 [ 19.678872] ret_from_fork+0x41/0x80 [ 19.678902] ? __pfx_kthread+0x10/0x10 [ 19.678927] ret_from_fork_asm+0x1a/0x30 [ 19.679018] </TASK> [ 19.679059] [ 19.700351] Allocated by task 206: [ 19.701697] kasan_save_stack+0x45/0x70 [ 19.702075] kasan_save_track+0x18/0x40 [ 19.702511] kasan_save_alloc_info+0x3b/0x50 [ 19.702883] __kasan_kmalloc+0xb7/0xc0 [ 19.703665] __kmalloc_cache_noprof+0x189/0x420 [ 19.704043] kmalloc_uaf_memset+0xa9/0x360 [ 19.704923] kunit_try_run_case+0x1a5/0x480 [ 19.705410] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.706695] kthread+0x337/0x6f0 [ 19.707531] ret_from_fork+0x41/0x80 [ 19.707952] ret_from_fork_asm+0x1a/0x30 [ 19.708376] [ 19.708720] Freed by task 206: [ 19.709633] kasan_save_stack+0x45/0x70 [ 19.710231] kasan_save_track+0x18/0x40 [ 19.710619] kasan_save_free_info+0x3f/0x60 [ 19.711141] __kasan_slab_free+0x56/0x70 [ 19.711652] kfree+0x222/0x3f0 [ 19.712120] kmalloc_uaf_memset+0x12b/0x360 [ 19.712876] kunit_try_run_case+0x1a5/0x480 [ 19.713333] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.714502] kthread+0x337/0x6f0 [ 19.714871] ret_from_fork+0x41/0x80 [ 19.715379] ret_from_fork_asm+0x1a/0x30 [ 19.715925] [ 19.716362] The buggy address belongs to the object at ffff888102eda680 [ 19.716362] which belongs to the cache kmalloc-64 of size 64 [ 19.717545] The buggy address is located 0 bytes inside of [ 19.717545] freed 64-byte region [ffff888102eda680, ffff888102eda6c0) [ 19.719339] [ 19.719626] The buggy address belongs to the physical page: [ 19.720177] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102eda [ 19.720753] flags: 0x200000000000000(node=0|zone=2) [ 19.721389] page_type: f5(slab) [ 19.721799] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 19.723104] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 19.723702] page dumped because: kasan: bad access detected [ 19.724206] [ 19.724432] Memory state around the buggy address: [ 19.724849] ffff888102eda580: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 19.725760] ffff888102eda600: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 19.726394] >ffff888102eda680: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 19.727048] ^ [ 19.728475] ffff888102eda700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.729338] ffff888102eda780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.729940] ==================================================================