Date
July 8, 2025, 4:38 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 17.876137] ================================================================== [ 17.876408] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_memset_2+0x150/0x2f8 [ 17.876463] Write of size 2 at addr fff00000c63d6277 by task kunit_try_catch/174 [ 17.876511] [ 17.876564] CPU: 1 UID: 0 PID: 174 Comm: kunit_try_catch Tainted: G B N 6.15.6-rc1 #1 PREEMPT [ 17.876646] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.876671] Hardware name: linux,dummy-virt (DT) [ 17.876701] Call trace: [ 17.876723] show_stack+0x20/0x38 (C) [ 17.876901] dump_stack_lvl+0x8c/0xd0 [ 17.877143] print_report+0x118/0x608 [ 17.877194] kasan_report+0xdc/0x128 [ 17.877238] kasan_check_range+0x100/0x1a8 [ 17.877283] __asan_memset+0x34/0x78 [ 17.877328] kmalloc_oob_memset_2+0x150/0x2f8 [ 17.877399] kunit_try_run_case+0x170/0x3f0 [ 17.877446] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.877787] kthread+0x328/0x630 [ 17.877839] ret_from_fork+0x10/0x20 [ 17.877887] [ 17.878171] Allocated by task 174: [ 17.878215] kasan_save_stack+0x3c/0x68 [ 17.878256] kasan_save_track+0x20/0x40 [ 17.878293] kasan_save_alloc_info+0x40/0x58 [ 17.878330] __kasan_kmalloc+0xd4/0xd8 [ 17.878387] __kmalloc_cache_noprof+0x16c/0x3c0 [ 17.878426] kmalloc_oob_memset_2+0xb0/0x2f8 [ 17.878624] kunit_try_run_case+0x170/0x3f0 [ 17.878826] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.879188] kthread+0x328/0x630 [ 17.879297] ret_from_fork+0x10/0x20 [ 17.879346] [ 17.879376] The buggy address belongs to the object at fff00000c63d6200 [ 17.879376] which belongs to the cache kmalloc-128 of size 128 [ 17.879516] The buggy address is located 119 bytes inside of [ 17.879516] allocated 120-byte region [fff00000c63d6200, fff00000c63d6278) [ 17.879576] [ 17.879596] The buggy address belongs to the physical page: [ 17.879660] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1063d6 [ 17.879992] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 17.880085] page_type: f5(slab) [ 17.880129] raw: 0bfffe0000000000 fff00000c0001a00 dead000000000122 0000000000000000 [ 17.880177] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 17.880223] page dumped because: kasan: bad access detected [ 17.880375] [ 17.880609] Memory state around the buggy address: [ 17.880669] fff00000c63d6100: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 17.880735] fff00000c63d6180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.880779] >fff00000c63d6200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 17.880839] ^ [ 17.880879] fff00000c63d6280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.880951] fff00000c63d6300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.880989] ==================================================================
[ 11.334147] ================================================================== [ 11.334793] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_memset_2+0x166/0x330 [ 11.335240] Write of size 2 at addr ffff8881029ca977 by task kunit_try_catch/192 [ 11.335477] [ 11.335988] CPU: 1 UID: 0 PID: 192 Comm: kunit_try_catch Tainted: G B N 6.15.6-rc1 #1 PREEMPT(voluntary) [ 11.336037] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.336050] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.336072] Call Trace: [ 11.336084] <TASK> [ 11.336099] dump_stack_lvl+0x73/0xb0 [ 11.336127] print_report+0xd1/0x650 [ 11.336151] ? __virt_addr_valid+0x1db/0x2d0 [ 11.336173] ? kmalloc_oob_memset_2+0x166/0x330 [ 11.336196] ? kasan_complete_mode_report_info+0x2a/0x200 [ 11.336218] ? kmalloc_oob_memset_2+0x166/0x330 [ 11.336241] kasan_report+0x141/0x180 [ 11.336263] ? kmalloc_oob_memset_2+0x166/0x330 [ 11.336291] kasan_check_range+0x10c/0x1c0 [ 11.336311] __asan_memset+0x27/0x50 [ 11.336331] kmalloc_oob_memset_2+0x166/0x330 [ 11.336354] ? __pfx_kmalloc_oob_memset_2+0x10/0x10 [ 11.336378] ? __schedule+0x10cc/0x2b60 [ 11.336401] ? __pfx_read_tsc+0x10/0x10 [ 11.336421] ? ktime_get_ts64+0x86/0x230 [ 11.336445] kunit_try_run_case+0x1a5/0x480 [ 11.336466] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.336485] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.336798] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.336836] ? __kthread_parkme+0x82/0x180 [ 11.336863] ? preempt_count_sub+0x50/0x80 [ 11.336902] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.336925] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.336998] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.337027] kthread+0x337/0x6f0 [ 11.337045] ? trace_preempt_on+0x20/0xc0 [ 11.337069] ? __pfx_kthread+0x10/0x10 [ 11.337087] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.337110] ? calculate_sigpending+0x7b/0xa0 [ 11.337131] ? __pfx_kthread+0x10/0x10 [ 11.337150] ret_from_fork+0x41/0x80 [ 11.337170] ? __pfx_kthread+0x10/0x10 [ 11.337188] ret_from_fork_asm+0x1a/0x30 [ 11.337218] </TASK> [ 11.337229] [ 11.351285] Allocated by task 192: [ 11.351642] kasan_save_stack+0x45/0x70 [ 11.352093] kasan_save_track+0x18/0x40 [ 11.352457] kasan_save_alloc_info+0x3b/0x50 [ 11.352927] __kasan_kmalloc+0xb7/0xc0 [ 11.353295] __kmalloc_cache_noprof+0x189/0x420 [ 11.353488] kmalloc_oob_memset_2+0xac/0x330 [ 11.353653] kunit_try_run_case+0x1a5/0x480 [ 11.353800] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.354309] kthread+0x337/0x6f0 [ 11.354658] ret_from_fork+0x41/0x80 [ 11.355085] ret_from_fork_asm+0x1a/0x30 [ 11.355459] [ 11.355630] The buggy address belongs to the object at ffff8881029ca900 [ 11.355630] which belongs to the cache kmalloc-128 of size 128 [ 11.356215] The buggy address is located 119 bytes inside of [ 11.356215] allocated 120-byte region [ffff8881029ca900, ffff8881029ca978) [ 11.357475] [ 11.357712] The buggy address belongs to the physical page: [ 11.358287] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1029ca [ 11.358819] flags: 0x200000000000000(node=0|zone=2) [ 11.359005] page_type: f5(slab) [ 11.359129] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 11.359362] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 11.359669] page dumped because: kasan: bad access detected [ 11.359840] [ 11.360048] Memory state around the buggy address: [ 11.360240] ffff8881029ca800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 11.360457] ffff8881029ca880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.360749] >ffff8881029ca900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 11.360972] ^ [ 11.361233] ffff8881029ca980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.361543] ffff8881029caa00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.362311] ==================================================================