Date
July 19, 2025, 11:11 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 17.520140] ================================================================== [ 17.520240] BUG: KASAN: slab-out-of-bounds in memcmp+0x198/0x1d8 [ 17.520326] Read of size 1 at addr fff00000c77df918 by task kunit_try_catch/258 [ 17.520380] [ 17.520511] CPU: 1 UID: 0 PID: 258 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 17.520617] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.520715] Hardware name: linux,dummy-virt (DT) [ 17.520772] Call trace: [ 17.520798] show_stack+0x20/0x38 (C) [ 17.520858] dump_stack_lvl+0x8c/0xd0 [ 17.521093] print_report+0x118/0x5d0 [ 17.521290] kasan_report+0xdc/0x128 [ 17.521345] __asan_report_load1_noabort+0x20/0x30 [ 17.521485] memcmp+0x198/0x1d8 [ 17.521557] kasan_memcmp+0x16c/0x300 [ 17.521680] kunit_try_run_case+0x170/0x3f0 [ 17.521756] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.521813] kthread+0x328/0x630 [ 17.521922] ret_from_fork+0x10/0x20 [ 17.521972] [ 17.521996] Allocated by task 258: [ 17.522032] kasan_save_stack+0x3c/0x68 [ 17.522279] kasan_save_track+0x20/0x40 [ 17.522664] kasan_save_alloc_info+0x40/0x58 [ 17.522751] __kasan_kmalloc+0xd4/0xd8 [ 17.522874] __kmalloc_cache_noprof+0x16c/0x3c0 [ 17.522952] kasan_memcmp+0xbc/0x300 [ 17.522991] kunit_try_run_case+0x170/0x3f0 [ 17.523224] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.523298] kthread+0x328/0x630 [ 17.523344] ret_from_fork+0x10/0x20 [ 17.523418] [ 17.523441] The buggy address belongs to the object at fff00000c77df900 [ 17.523441] which belongs to the cache kmalloc-32 of size 32 [ 17.523605] The buggy address is located 0 bytes to the right of [ 17.523605] allocated 24-byte region [fff00000c77df900, fff00000c77df918) [ 17.523779] [ 17.523816] The buggy address belongs to the physical page: [ 17.523856] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1077df [ 17.523914] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 17.523965] page_type: f5(slab) [ 17.524006] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 17.524068] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 17.524111] page dumped because: kasan: bad access detected [ 17.524156] [ 17.524185] Memory state around the buggy address: [ 17.524219] fff00000c77df800: 00 00 00 fc fc fc fc fc 00 00 00 04 fc fc fc fc [ 17.524265] fff00000c77df880: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 17.524321] >fff00000c77df900: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.524370] ^ [ 17.524402] fff00000c77df980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.524458] fff00000c77dfa00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.524513] ==================================================================
[ 13.913264] ================================================================== [ 13.913757] BUG: KASAN: slab-out-of-bounds in memcmp+0x1b4/0x1d0 [ 13.914057] Read of size 1 at addr ffff8881039f8818 by task kunit_try_catch/275 [ 13.914438] [ 13.914579] CPU: 0 UID: 0 PID: 275 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 13.914639] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.914653] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.914682] Call Trace: [ 13.914697] <TASK> [ 13.914717] dump_stack_lvl+0x73/0xb0 [ 13.914751] print_report+0xd1/0x610 [ 13.914779] ? __virt_addr_valid+0x1db/0x2d0 [ 13.914807] ? memcmp+0x1b4/0x1d0 [ 13.914827] ? kasan_complete_mode_report_info+0x2a/0x200 [ 13.914856] ? memcmp+0x1b4/0x1d0 [ 13.914878] kasan_report+0x141/0x180 [ 13.914903] ? memcmp+0x1b4/0x1d0 [ 13.914931] __asan_report_load1_noabort+0x18/0x20 [ 13.914961] memcmp+0x1b4/0x1d0 [ 13.914985] kasan_memcmp+0x18f/0x390 [ 13.915009] ? trace_hardirqs_on+0x37/0xe0 [ 13.915038] ? __pfx_kasan_memcmp+0x10/0x10 [ 13.915062] ? finish_task_switch.isra.0+0x153/0x700 [ 13.915091] ? __switch_to+0x47/0xf50 [ 13.915126] ? __pfx_read_tsc+0x10/0x10 [ 13.915151] ? ktime_get_ts64+0x86/0x230 [ 13.915200] kunit_try_run_case+0x1a5/0x480 [ 13.915231] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.915258] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.915288] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.915317] ? __kthread_parkme+0x82/0x180 [ 13.915344] ? preempt_count_sub+0x50/0x80 [ 13.915374] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.915403] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.915432] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.915463] kthread+0x337/0x6f0 [ 13.915485] ? trace_preempt_on+0x20/0xc0 [ 13.915522] ? __pfx_kthread+0x10/0x10 [ 13.915547] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.915572] ? calculate_sigpending+0x7b/0xa0 [ 13.915601] ? __pfx_kthread+0x10/0x10 [ 13.915627] ret_from_fork+0x116/0x1d0 [ 13.915651] ? __pfx_kthread+0x10/0x10 [ 13.915675] ret_from_fork_asm+0x1a/0x30 [ 13.915714] </TASK> [ 13.915727] [ 13.923517] Allocated by task 275: [ 13.923660] kasan_save_stack+0x45/0x70 [ 13.923832] kasan_save_track+0x18/0x40 [ 13.924034] kasan_save_alloc_info+0x3b/0x50 [ 13.924258] __kasan_kmalloc+0xb7/0xc0 [ 13.924459] __kmalloc_cache_noprof+0x189/0x420 [ 13.925152] kasan_memcmp+0xb7/0x390 [ 13.925312] kunit_try_run_case+0x1a5/0x480 [ 13.925639] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.925918] kthread+0x337/0x6f0 [ 13.926207] ret_from_fork+0x116/0x1d0 [ 13.926390] ret_from_fork_asm+0x1a/0x30 [ 13.926556] [ 13.926637] The buggy address belongs to the object at ffff8881039f8800 [ 13.926637] which belongs to the cache kmalloc-32 of size 32 [ 13.927032] The buggy address is located 0 bytes to the right of [ 13.927032] allocated 24-byte region [ffff8881039f8800, ffff8881039f8818) [ 13.927948] [ 13.928070] The buggy address belongs to the physical page: [ 13.928647] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1039f8 [ 13.928921] flags: 0x200000000000000(node=0|zone=2) [ 13.929377] page_type: f5(slab) [ 13.929587] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 13.929941] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 13.930353] page dumped because: kasan: bad access detected [ 13.930584] [ 13.930685] Memory state around the buggy address: [ 13.930933] ffff8881039f8700: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 13.931343] ffff8881039f8780: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 13.931597] >ffff8881039f8800: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.931829] ^ [ 13.931984] ffff8881039f8880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.932467] ffff8881039f8900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.932836] ==================================================================