Date
July 25, 2025, 3:13 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 34.603234] ================================================================== [ 34.603400] BUG: KASAN: slab-out-of-bounds in memcmp+0x198/0x1d8 [ 34.603465] Read of size 1 at addr fff00000c9a941d8 by task kunit_try_catch/289 [ 34.603722] [ 34.603804] CPU: 0 UID: 0 PID: 289 Comm: kunit_try_catch Tainted: G B W N 6.16.0-rc7-next-20250725 #1 PREEMPT [ 34.603976] Tainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST [ 34.604103] Hardware name: linux,dummy-virt (DT) [ 34.604137] Call trace: [ 34.604263] show_stack+0x20/0x38 (C) [ 34.604328] dump_stack_lvl+0x8c/0xd0 [ 34.604423] print_report+0x118/0x5e8 [ 34.604617] kasan_report+0xdc/0x128 [ 34.604678] __asan_report_load1_noabort+0x20/0x30 [ 34.604737] memcmp+0x198/0x1d8 [ 34.604825] kasan_memcmp+0x16c/0x300 [ 34.605075] kunit_try_run_case+0x170/0x3f0 [ 34.605189] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.605244] kthread+0x328/0x630 [ 34.605288] ret_from_fork+0x10/0x20 [ 34.605339] [ 34.605359] Allocated by task 289: [ 34.605390] kasan_save_stack+0x3c/0x68 [ 34.605483] kasan_save_track+0x20/0x40 [ 34.605633] kasan_save_alloc_info+0x40/0x58 [ 34.605682] __kasan_kmalloc+0xd4/0xd8 [ 34.605717] __kmalloc_cache_noprof+0x16c/0x3c0 [ 34.605762] kasan_memcmp+0xbc/0x300 [ 34.605800] kunit_try_run_case+0x170/0x3f0 [ 34.605837] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.605881] kthread+0x328/0x630 [ 34.605914] ret_from_fork+0x10/0x20 [ 34.606409] [ 34.606741] The buggy address belongs to the object at fff00000c9a941c0 [ 34.606741] which belongs to the cache kmalloc-32 of size 32 [ 34.606891] The buggy address is located 0 bytes to the right of [ 34.606891] allocated 24-byte region [fff00000c9a941c0, fff00000c9a941d8) [ 34.607122] [ 34.607147] The buggy address belongs to the physical page: [ 34.607184] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x109a94 [ 34.607241] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 34.607425] page_type: f5(slab) [ 34.607470] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 34.607588] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 34.607730] page dumped because: kasan: bad access detected [ 34.607898] [ 34.607959] Memory state around the buggy address: [ 34.608012] fff00000c9a94080: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 34.608059] fff00000c9a94100: 00 00 00 04 fc fc fc fc 00 00 07 fc fc fc fc fc [ 34.608114] >fff00000c9a94180: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 34.608243] ^ [ 34.608283] fff00000c9a94200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 34.608327] fff00000c9a94280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 34.608367] ==================================================================
[ 27.704229] ================================================================== [ 27.705743] BUG: KASAN: slab-out-of-bounds in memcmp+0x1b4/0x1d0 [ 27.707002] Read of size 1 at addr ffff88810625fe98 by task kunit_try_catch/306 [ 27.707790] [ 27.707911] CPU: 1 UID: 0 PID: 306 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7-next-20250725 #1 PREEMPT(voluntary) [ 27.707972] Tainted: [B]=BAD_PAGE, [N]=TEST [ 27.707984] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 27.708007] Call Trace: [ 27.708019] <TASK> [ 27.708035] dump_stack_lvl+0x73/0xb0 [ 27.708065] print_report+0xd1/0x640 [ 27.708090] ? __virt_addr_valid+0x1db/0x2d0 [ 27.708114] ? memcmp+0x1b4/0x1d0 [ 27.708136] ? kasan_complete_mode_report_info+0x2a/0x200 [ 27.708166] ? memcmp+0x1b4/0x1d0 [ 27.708188] kasan_report+0x141/0x180 [ 27.708211] ? memcmp+0x1b4/0x1d0 [ 27.708240] __asan_report_load1_noabort+0x18/0x20 [ 27.708266] memcmp+0x1b4/0x1d0 [ 27.708290] kasan_memcmp+0x18f/0x390 [ 27.708312] ? trace_hardirqs_on+0x37/0xe0 [ 27.708466] ? __pfx_kasan_memcmp+0x10/0x10 [ 27.708498] ? finish_task_switch.isra.0+0x153/0x700 [ 27.708523] ? __switch_to+0x47/0xf80 [ 27.708555] ? __pfx_read_tsc+0x10/0x10 [ 27.708577] ? ktime_get_ts64+0x86/0x230 [ 27.708603] kunit_try_run_case+0x1a5/0x480 [ 27.708630] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.708654] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 27.708678] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 27.708706] ? __kthread_parkme+0x82/0x180 [ 27.708726] ? preempt_count_sub+0x50/0x80 [ 27.708752] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.708777] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.708876] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 27.708902] kthread+0x337/0x6f0 [ 27.708924] ? trace_preempt_on+0x20/0xc0 [ 27.708960] ? __pfx_kthread+0x10/0x10 [ 27.708983] ? _raw_spin_unlock_irq+0x47/0x80 [ 27.709008] ? calculate_sigpending+0x7b/0xa0 [ 27.709033] ? __pfx_kthread+0x10/0x10 [ 27.709056] ret_from_fork+0x116/0x1d0 [ 27.709077] ? __pfx_kthread+0x10/0x10 [ 27.709098] ret_from_fork_asm+0x1a/0x30 [ 27.709136] </TASK> [ 27.709148] [ 27.717182] Allocated by task 306: [ 27.717351] kasan_save_stack+0x45/0x70 [ 27.717553] kasan_save_track+0x18/0x40 [ 27.717719] kasan_save_alloc_info+0x3b/0x50 [ 27.717899] __kasan_kmalloc+0xb7/0xc0 [ 27.718042] __kmalloc_cache_noprof+0x189/0x420 [ 27.718200] kasan_memcmp+0xb7/0x390 [ 27.718328] kunit_try_run_case+0x1a5/0x480 [ 27.718529] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.718785] kthread+0x337/0x6f0 [ 27.718982] ret_from_fork+0x116/0x1d0 [ 27.719319] ret_from_fork_asm+0x1a/0x30 [ 27.719519] [ 27.719608] The buggy address belongs to the object at ffff88810625fe80 [ 27.719608] which belongs to the cache kmalloc-32 of size 32 [ 27.720113] The buggy address is located 0 bytes to the right of [ 27.720113] allocated 24-byte region [ffff88810625fe80, ffff88810625fe98) [ 27.720737] [ 27.720874] The buggy address belongs to the physical page: [ 27.721268] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10625f [ 27.721616] flags: 0x200000000000000(node=0|zone=2) [ 27.721807] page_type: f5(slab) [ 27.722040] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 27.722291] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 27.722520] page dumped because: kasan: bad access detected [ 27.722691] [ 27.722757] Memory state around the buggy address: [ 27.722914] ffff88810625fd80: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 27.723203] ffff88810625fe00: 00 00 00 04 fc fc fc fc 00 00 07 fc fc fc fc fc [ 27.723602] >ffff88810625fe80: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.723923] ^ [ 27.724418] ffff88810625ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.724724] ffff88810625ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.725353] ==================================================================