Date
July 22, 2025, 2:40 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 17.245953] ================================================================== [ 17.246016] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_memset_4+0x150/0x300 [ 17.246079] Write of size 4 at addr fff00000c6fb0575 by task kunit_try_catch/176 [ 17.246269] [ 17.246812] CPU: 0 UID: 0 PID: 176 Comm: kunit_try_catch Tainted: G B N 6.15.8-rc1 #1 PREEMPT [ 17.247068] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.247187] Hardware name: linux,dummy-virt (DT) [ 17.247265] Call trace: [ 17.247323] show_stack+0x20/0x38 (C) [ 17.247458] dump_stack_lvl+0x8c/0xd0 [ 17.247550] print_report+0x118/0x5d0 [ 17.247633] kasan_report+0xdc/0x128 [ 17.247676] kasan_check_range+0x100/0x1a8 [ 17.247720] __asan_memset+0x34/0x78 [ 17.248127] kmalloc_oob_memset_4+0x150/0x300 [ 17.248263] kunit_try_run_case+0x170/0x3f0 [ 17.248426] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.248515] kthread+0x328/0x630 [ 17.248629] ret_from_fork+0x10/0x20 [ 17.248711] [ 17.248730] Allocated by task 176: [ 17.248766] kasan_save_stack+0x3c/0x68 [ 17.249020] kasan_save_track+0x20/0x40 [ 17.249329] kasan_save_alloc_info+0x40/0x58 [ 17.249461] __kasan_kmalloc+0xd4/0xd8 [ 17.249628] __kmalloc_cache_noprof+0x16c/0x3c0 [ 17.249710] kmalloc_oob_memset_4+0xb0/0x300 [ 17.249749] kunit_try_run_case+0x170/0x3f0 [ 17.250119] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.250345] kthread+0x328/0x630 [ 17.250496] ret_from_fork+0x10/0x20 [ 17.250585] [ 17.250661] The buggy address belongs to the object at fff00000c6fb0500 [ 17.250661] which belongs to the cache kmalloc-128 of size 128 [ 17.250719] The buggy address is located 117 bytes inside of [ 17.250719] allocated 120-byte region [fff00000c6fb0500, fff00000c6fb0578) [ 17.250950] [ 17.251009] The buggy address belongs to the physical page: [ 17.251218] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106fb0 [ 17.251361] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 17.251483] page_type: f5(slab) [ 17.251545] raw: 0bfffe0000000000 fff00000c0001a00 dead000000000122 0000000000000000 [ 17.251691] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 17.251731] page dumped because: kasan: bad access detected [ 17.251767] [ 17.251786] Memory state around the buggy address: [ 17.251848] fff00000c6fb0400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 17.252110] fff00000c6fb0480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.252191] >fff00000c6fb0500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 17.252334] ^ [ 17.252522] fff00000c6fb0580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.252611] fff00000c6fb0600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.252755] ==================================================================
[ 11.201614] ================================================================== [ 11.202121] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_memset_4+0x166/0x330 [ 11.202848] Write of size 4 at addr ffff88810306a975 by task kunit_try_catch/194 [ 11.203085] [ 11.203204] CPU: 0 UID: 0 PID: 194 Comm: kunit_try_catch Tainted: G B N 6.15.8-rc1 #1 PREEMPT(voluntary) [ 11.203265] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.203277] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.203322] Call Trace: [ 11.203335] <TASK> [ 11.203351] dump_stack_lvl+0x73/0xb0 [ 11.203377] print_report+0xd1/0x610 [ 11.203400] ? __virt_addr_valid+0x1db/0x2d0 [ 11.203421] ? kmalloc_oob_memset_4+0x166/0x330 [ 11.203442] ? kasan_complete_mode_report_info+0x2a/0x200 [ 11.203463] ? kmalloc_oob_memset_4+0x166/0x330 [ 11.203485] kasan_report+0x141/0x180 [ 11.203507] ? kmalloc_oob_memset_4+0x166/0x330 [ 11.203534] kasan_check_range+0x10c/0x1c0 [ 11.203553] __asan_memset+0x27/0x50 [ 11.203572] kmalloc_oob_memset_4+0x166/0x330 [ 11.203595] ? __pfx_kmalloc_oob_memset_4+0x10/0x10 [ 11.203630] ? __schedule+0x10c6/0x2b60 [ 11.203654] ? __pfx_read_tsc+0x10/0x10 [ 11.203674] ? ktime_get_ts64+0x86/0x230 [ 11.203700] kunit_try_run_case+0x1a5/0x480 [ 11.203720] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.203738] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.203757] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.203781] ? __kthread_parkme+0x82/0x180 [ 11.203801] ? preempt_count_sub+0x50/0x80 [ 11.203826] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.203846] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.203867] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.203890] kthread+0x337/0x6f0 [ 11.203905] ? trace_preempt_on+0x20/0xc0 [ 11.203929] ? __pfx_kthread+0x10/0x10 [ 11.203946] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.203967] ? calculate_sigpending+0x7b/0xa0 [ 11.203988] ? __pfx_kthread+0x10/0x10 [ 11.204006] ret_from_fork+0x41/0x80 [ 11.204027] ? __pfx_kthread+0x10/0x10 [ 11.204044] ret_from_fork_asm+0x1a/0x30 [ 11.204074] </TASK> [ 11.204085] [ 11.211823] Allocated by task 194: [ 11.212011] kasan_save_stack+0x45/0x70 [ 11.212218] kasan_save_track+0x18/0x40 [ 11.212625] kasan_save_alloc_info+0x3b/0x50 [ 11.212903] __kasan_kmalloc+0xb7/0xc0 [ 11.213111] __kmalloc_cache_noprof+0x189/0x420 [ 11.213294] kmalloc_oob_memset_4+0xac/0x330 [ 11.213658] kunit_try_run_case+0x1a5/0x480 [ 11.213838] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.214011] kthread+0x337/0x6f0 [ 11.214129] ret_from_fork+0x41/0x80 [ 11.214269] ret_from_fork_asm+0x1a/0x30 [ 11.214465] [ 11.214557] The buggy address belongs to the object at ffff88810306a900 [ 11.214557] which belongs to the cache kmalloc-128 of size 128 [ 11.215488] The buggy address is located 117 bytes inside of [ 11.215488] allocated 120-byte region [ffff88810306a900, ffff88810306a978) [ 11.216018] [ 11.216120] The buggy address belongs to the physical page: [ 11.216422] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10306a [ 11.216787] flags: 0x200000000000000(node=0|zone=2) [ 11.217036] page_type: f5(slab) [ 11.217205] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 11.217478] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 11.217992] page dumped because: kasan: bad access detected [ 11.218270] [ 11.218384] Memory state around the buggy address: [ 11.218583] ffff88810306a800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 11.219119] ffff88810306a880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.219480] >ffff88810306a900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 11.219762] ^ [ 11.220145] ffff88810306a980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.220525] ffff88810306aa00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.220895] ==================================================================