Date
July 22, 2025, 2:40 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 17.230768] ================================================================== [ 17.231023] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_memset_2+0x150/0x2f8 [ 17.231154] Write of size 2 at addr fff00000c6fb0477 by task kunit_try_catch/174 [ 17.231212] [ 17.231246] CPU: 0 UID: 0 PID: 174 Comm: kunit_try_catch Tainted: G B N 6.15.8-rc1 #1 PREEMPT [ 17.231341] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.231763] Hardware name: linux,dummy-virt (DT) [ 17.231819] Call trace: [ 17.231858] show_stack+0x20/0x38 (C) [ 17.232024] dump_stack_lvl+0x8c/0xd0 [ 17.232110] print_report+0x118/0x5d0 [ 17.232408] kasan_report+0xdc/0x128 [ 17.232532] kasan_check_range+0x100/0x1a8 [ 17.232584] __asan_memset+0x34/0x78 [ 17.232647] kmalloc_oob_memset_2+0x150/0x2f8 [ 17.232706] kunit_try_run_case+0x170/0x3f0 [ 17.232756] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.232813] kthread+0x328/0x630 [ 17.232866] ret_from_fork+0x10/0x20 [ 17.232912] [ 17.232930] Allocated by task 174: [ 17.232957] kasan_save_stack+0x3c/0x68 [ 17.232995] kasan_save_track+0x20/0x40 [ 17.233041] kasan_save_alloc_info+0x40/0x58 [ 17.233077] __kasan_kmalloc+0xd4/0xd8 [ 17.233111] __kmalloc_cache_noprof+0x16c/0x3c0 [ 17.233153] kmalloc_oob_memset_2+0xb0/0x2f8 [ 17.233205] kunit_try_run_case+0x170/0x3f0 [ 17.233243] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.233292] kthread+0x328/0x630 [ 17.233328] ret_from_fork+0x10/0x20 [ 17.233362] [ 17.233391] The buggy address belongs to the object at fff00000c6fb0400 [ 17.233391] which belongs to the cache kmalloc-128 of size 128 [ 17.233459] The buggy address is located 119 bytes inside of [ 17.233459] allocated 120-byte region [fff00000c6fb0400, fff00000c6fb0478) [ 17.233519] [ 17.233554] The buggy address belongs to the physical page: [ 17.233592] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106fb0 [ 17.233643] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 17.233690] page_type: f5(slab) [ 17.233734] raw: 0bfffe0000000000 fff00000c0001a00 dead000000000122 0000000000000000 [ 17.233781] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 17.233819] page dumped because: kasan: bad access detected [ 17.233854] [ 17.233872] Memory state around the buggy address: [ 17.233912] fff00000c6fb0300: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 17.233954] fff00000c6fb0380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.233996] >fff00000c6fb0400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 17.234032] ^ [ 17.234077] fff00000c6fb0480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.234126] fff00000c6fb0500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.234172] ==================================================================
[ 11.175451] ================================================================== [ 11.175929] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_memset_2+0x166/0x330 [ 11.176303] Write of size 2 at addr ffff88810306a877 by task kunit_try_catch/192 [ 11.176707] [ 11.177044] CPU: 0 UID: 0 PID: 192 Comm: kunit_try_catch Tainted: G B N 6.15.8-rc1 #1 PREEMPT(voluntary) [ 11.177093] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.177104] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.177126] Call Trace: [ 11.177139] <TASK> [ 11.177155] dump_stack_lvl+0x73/0xb0 [ 11.177184] print_report+0xd1/0x610 [ 11.177207] ? __virt_addr_valid+0x1db/0x2d0 [ 11.177242] ? kmalloc_oob_memset_2+0x166/0x330 [ 11.177264] ? kasan_complete_mode_report_info+0x2a/0x200 [ 11.177286] ? kmalloc_oob_memset_2+0x166/0x330 [ 11.177307] kasan_report+0x141/0x180 [ 11.177329] ? kmalloc_oob_memset_2+0x166/0x330 [ 11.177355] kasan_check_range+0x10c/0x1c0 [ 11.177375] __asan_memset+0x27/0x50 [ 11.177394] kmalloc_oob_memset_2+0x166/0x330 [ 11.177417] ? __pfx_kmalloc_oob_memset_2+0x10/0x10 [ 11.177439] ? __schedule+0x10c6/0x2b60 [ 11.177463] ? __pfx_read_tsc+0x10/0x10 [ 11.177483] ? ktime_get_ts64+0x86/0x230 [ 11.177509] kunit_try_run_case+0x1a5/0x480 [ 11.177530] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.177548] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.177569] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.177592] ? __kthread_parkme+0x82/0x180 [ 11.177614] ? preempt_count_sub+0x50/0x80 [ 11.177642] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.177810] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.177843] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.177866] kthread+0x337/0x6f0 [ 11.177884] ? trace_preempt_on+0x20/0xc0 [ 11.177909] ? __pfx_kthread+0x10/0x10 [ 11.177926] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.177948] ? calculate_sigpending+0x7b/0xa0 [ 11.177970] ? __pfx_kthread+0x10/0x10 [ 11.177987] ret_from_fork+0x41/0x80 [ 11.178008] ? __pfx_kthread+0x10/0x10 [ 11.178025] ret_from_fork_asm+0x1a/0x30 [ 11.178056] </TASK> [ 11.178067] [ 11.187396] Allocated by task 192: [ 11.187591] kasan_save_stack+0x45/0x70 [ 11.188120] kasan_save_track+0x18/0x40 [ 11.188285] kasan_save_alloc_info+0x3b/0x50 [ 11.188611] __kasan_kmalloc+0xb7/0xc0 [ 11.188798] __kmalloc_cache_noprof+0x189/0x420 [ 11.189024] kmalloc_oob_memset_2+0xac/0x330 [ 11.189221] kunit_try_run_case+0x1a5/0x480 [ 11.189462] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.189762] kthread+0x337/0x6f0 [ 11.189999] ret_from_fork+0x41/0x80 [ 11.190418] ret_from_fork_asm+0x1a/0x30 [ 11.190677] [ 11.190749] The buggy address belongs to the object at ffff88810306a800 [ 11.190749] which belongs to the cache kmalloc-128 of size 128 [ 11.191433] The buggy address is located 119 bytes inside of [ 11.191433] allocated 120-byte region [ffff88810306a800, ffff88810306a878) [ 11.192115] [ 11.192192] The buggy address belongs to the physical page: [ 11.192559] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10306a [ 11.192947] flags: 0x200000000000000(node=0|zone=2) [ 11.193451] page_type: f5(slab) [ 11.193625] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 11.194590] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 11.195207] page dumped because: kasan: bad access detected [ 11.195425] [ 11.195514] Memory state around the buggy address: [ 11.195869] ffff88810306a700: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 11.196097] ffff88810306a780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.196510] >ffff88810306a800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 11.196903] ^ [ 11.197263] ffff88810306a880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.197577] ffff88810306a900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.197816] ==================================================================