Date
July 6, 2025, 11:09 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 20.457492] ================================================================== [ 20.457723] BUG: KASAN: slab-out-of-bounds in memcmp+0x198/0x1d8 [ 20.457937] Read of size 1 at addr fff00000c5707ed8 by task kunit_try_catch/257 [ 20.457999] [ 20.458106] CPU: 1 UID: 0 PID: 257 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 20.458384] Tainted: [B]=BAD_PAGE, [N]=TEST [ 20.458579] Hardware name: linux,dummy-virt (DT) [ 20.458616] Call trace: [ 20.458688] show_stack+0x20/0x38 (C) [ 20.459158] dump_stack_lvl+0x8c/0xd0 [ 20.459314] print_report+0x118/0x608 [ 20.459368] kasan_report+0xdc/0x128 [ 20.459748] __asan_report_load1_noabort+0x20/0x30 [ 20.459833] memcmp+0x198/0x1d8 [ 20.460215] kasan_memcmp+0x16c/0x300 [ 20.460380] kunit_try_run_case+0x170/0x3f0 [ 20.460612] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.460844] kthread+0x328/0x630 [ 20.461257] ret_from_fork+0x10/0x20 [ 20.461434] [ 20.461459] Allocated by task 257: [ 20.461819] kasan_save_stack+0x3c/0x68 [ 20.461886] kasan_save_track+0x20/0x40 [ 20.462019] kasan_save_alloc_info+0x40/0x58 [ 20.462221] __kasan_kmalloc+0xd4/0xd8 [ 20.462295] __kmalloc_cache_noprof+0x16c/0x3c0 [ 20.462472] kasan_memcmp+0xbc/0x300 [ 20.462512] kunit_try_run_case+0x170/0x3f0 [ 20.462811] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.462969] kthread+0x328/0x630 [ 20.463075] ret_from_fork+0x10/0x20 [ 20.463151] [ 20.463340] The buggy address belongs to the object at fff00000c5707ec0 [ 20.463340] which belongs to the cache kmalloc-32 of size 32 [ 20.463433] The buggy address is located 0 bytes to the right of [ 20.463433] allocated 24-byte region [fff00000c5707ec0, fff00000c5707ed8) [ 20.463836] [ 20.463984] The buggy address belongs to the physical page: [ 20.464150] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105707 [ 20.464280] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 20.464388] page_type: f5(slab) [ 20.464508] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 20.464605] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 20.465262] page dumped because: kasan: bad access detected [ 20.465324] [ 20.465368] Memory state around the buggy address: [ 20.466043] fff00000c5707d80: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 20.466105] fff00000c5707e00: 00 00 00 04 fc fc fc fc 00 00 07 fc fc fc fc fc [ 20.466508] >fff00000c5707e80: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 20.466673] ^ [ 20.466849] fff00000c5707f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.466936] fff00000c5707f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.466994] ==================================================================
[ 13.501319] ================================================================== [ 13.502038] BUG: KASAN: slab-out-of-bounds in memcmp+0x1b4/0x1d0 [ 13.502310] Read of size 1 at addr ffff8881027a7c98 by task kunit_try_catch/274 [ 13.502717] [ 13.502812] CPU: 1 UID: 0 PID: 274 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 13.502858] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.502870] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.502892] Call Trace: [ 13.502905] <TASK> [ 13.502920] dump_stack_lvl+0x73/0xb0 [ 13.502961] print_report+0xd1/0x650 [ 13.502986] ? __virt_addr_valid+0x1db/0x2d0 [ 13.503010] ? memcmp+0x1b4/0x1d0 [ 13.503028] ? kasan_complete_mode_report_info+0x2a/0x200 [ 13.503051] ? memcmp+0x1b4/0x1d0 [ 13.503069] kasan_report+0x141/0x180 [ 13.503091] ? memcmp+0x1b4/0x1d0 [ 13.503119] __asan_report_load1_noabort+0x18/0x20 [ 13.503144] memcmp+0x1b4/0x1d0 [ 13.503165] kasan_memcmp+0x18f/0x390 [ 13.503186] ? trace_hardirqs_on+0x37/0xe0 [ 13.503209] ? __pfx_kasan_memcmp+0x10/0x10 [ 13.503230] ? finish_task_switch.isra.0+0x153/0x700 [ 13.503252] ? __switch_to+0x47/0xf50 [ 13.503282] ? __pfx_read_tsc+0x10/0x10 [ 13.503303] ? ktime_get_ts64+0x86/0x230 [ 13.503326] kunit_try_run_case+0x1a5/0x480 [ 13.503349] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.503373] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.503396] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.503421] ? __kthread_parkme+0x82/0x180 [ 13.503442] ? preempt_count_sub+0x50/0x80 [ 13.503518] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.503545] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.503570] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.503593] kthread+0x337/0x6f0 [ 13.503614] ? trace_preempt_on+0x20/0xc0 [ 13.503636] ? __pfx_kthread+0x10/0x10 [ 13.503657] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.503678] ? calculate_sigpending+0x7b/0xa0 [ 13.503702] ? __pfx_kthread+0x10/0x10 [ 13.503724] ret_from_fork+0x116/0x1d0 [ 13.503743] ? __pfx_kthread+0x10/0x10 [ 13.503764] ret_from_fork_asm+0x1a/0x30 [ 13.503795] </TASK> [ 13.503808] [ 13.512084] Allocated by task 274: [ 13.512283] kasan_save_stack+0x45/0x70 [ 13.512491] kasan_save_track+0x18/0x40 [ 13.512664] kasan_save_alloc_info+0x3b/0x50 [ 13.512865] __kasan_kmalloc+0xb7/0xc0 [ 13.513050] __kmalloc_cache_noprof+0x189/0x420 [ 13.513279] kasan_memcmp+0xb7/0x390 [ 13.513440] kunit_try_run_case+0x1a5/0x480 [ 13.513621] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.513823] kthread+0x337/0x6f0 [ 13.514000] ret_from_fork+0x116/0x1d0 [ 13.514190] ret_from_fork_asm+0x1a/0x30 [ 13.514606] [ 13.514709] The buggy address belongs to the object at ffff8881027a7c80 [ 13.514709] which belongs to the cache kmalloc-32 of size 32 [ 13.515232] The buggy address is located 0 bytes to the right of [ 13.515232] allocated 24-byte region [ffff8881027a7c80, ffff8881027a7c98) [ 13.515767] [ 13.515846] The buggy address belongs to the physical page: [ 13.516033] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1027a7 [ 13.516275] flags: 0x200000000000000(node=0|zone=2) [ 13.516514] page_type: f5(slab) [ 13.516767] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 13.517163] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 13.517397] page dumped because: kasan: bad access detected [ 13.517570] [ 13.517641] Memory state around the buggy address: [ 13.517796] ffff8881027a7b80: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 13.518638] ffff8881027a7c00: 00 00 00 04 fc fc fc fc 00 00 07 fc fc fc fc fc [ 13.518994] >ffff8881027a7c80: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.519350] ^ [ 13.519548] ffff8881027a7d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.519930] ffff8881027a7d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.520245] ==================================================================