Date
June 24, 2025, 12:47 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 27.364556] ================================================================== [ 27.365975] BUG: KASAN: slab-out-of-bounds in memcmp+0x198/0x1d8 [ 27.366501] Read of size 1 at addr fff00000c5a7cc98 by task kunit_try_catch/259 [ 27.366654] [ 27.367582] CPU: 1 UID: 0 PID: 259 Comm: kunit_try_catch Tainted: G B N 6.15.4-rc2 #1 PREEMPT [ 27.368010] Tainted: [B]=BAD_PAGE, [N]=TEST [ 27.368084] Hardware name: linux,dummy-virt (DT) [ 27.368648] Call trace: [ 27.368812] show_stack+0x20/0x38 (C) [ 27.369010] dump_stack_lvl+0x8c/0xd0 [ 27.369148] print_report+0x118/0x608 [ 27.369374] kasan_report+0xdc/0x128 [ 27.369581] __asan_report_load1_noabort+0x20/0x30 [ 27.369744] memcmp+0x198/0x1d8 [ 27.370053] kasan_memcmp+0x16c/0x300 [ 27.370453] kunit_try_run_case+0x170/0x3f0 [ 27.370622] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 27.370766] kthread+0x328/0x630 [ 27.370886] ret_from_fork+0x10/0x20 [ 27.371016] [ 27.371063] Allocated by task 259: [ 27.371148] kasan_save_stack+0x3c/0x68 [ 27.371417] kasan_save_track+0x20/0x40 [ 27.371573] kasan_save_alloc_info+0x40/0x58 [ 27.371730] __kasan_kmalloc+0xd4/0xd8 [ 27.371843] __kmalloc_cache_noprof+0x16c/0x3c0 [ 27.371969] kasan_memcmp+0xbc/0x300 [ 27.372104] kunit_try_run_case+0x170/0x3f0 [ 27.372625] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 27.372773] kthread+0x328/0x630 [ 27.372881] ret_from_fork+0x10/0x20 [ 27.373763] [ 27.374006] The buggy address belongs to the object at fff00000c5a7cc80 [ 27.374006] which belongs to the cache kmalloc-32 of size 32 [ 27.374472] The buggy address is located 0 bytes to the right of [ 27.374472] allocated 24-byte region [fff00000c5a7cc80, fff00000c5a7cc98) [ 27.375206] [ 27.375264] The buggy address belongs to the physical page: [ 27.375346] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105a7c [ 27.376145] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 27.376415] page_type: f5(slab) [ 27.376676] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 27.376817] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 27.376930] page dumped because: kasan: bad access detected [ 27.377025] [ 27.377076] Memory state around the buggy address: [ 27.377608] fff00000c5a7cb80: 00 00 00 fc fc fc fc fc 00 00 00 04 fc fc fc fc [ 27.378184] fff00000c5a7cc00: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 27.378588] >fff00000c5a7cc80: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.379299] ^ [ 27.379400] fff00000c5a7cd00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.379520] fff00000c5a7cd80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.380106] ==================================================================
[ 13.913522] ================================================================== [ 13.914054] BUG: KASAN: slab-out-of-bounds in memcmp+0x1b4/0x1d0 [ 13.914552] Read of size 1 at addr ffff8881039efa58 by task kunit_try_catch/277 [ 13.914935] [ 13.915088] CPU: 0 UID: 0 PID: 277 Comm: kunit_try_catch Tainted: G B N 6.15.4-rc2 #1 PREEMPT(voluntary) [ 13.915176] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.915199] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.915239] Call Trace: [ 13.915268] <TASK> [ 13.915303] dump_stack_lvl+0x73/0xb0 [ 13.915355] print_report+0xd1/0x650 [ 13.915400] ? __virt_addr_valid+0x1db/0x2d0 [ 13.915444] ? memcmp+0x1b4/0x1d0 [ 13.915482] ? kasan_complete_mode_report_info+0x2a/0x200 [ 13.915527] ? memcmp+0x1b4/0x1d0 [ 13.915557] kasan_report+0x141/0x180 [ 13.915646] ? memcmp+0x1b4/0x1d0 [ 13.915692] __asan_report_load1_noabort+0x18/0x20 [ 13.915736] memcmp+0x1b4/0x1d0 [ 13.915779] kasan_memcmp+0x18f/0x390 [ 13.915821] ? trace_hardirqs_on+0x37/0xe0 [ 13.915871] ? __pfx_kasan_memcmp+0x10/0x10 [ 13.915913] ? finish_task_switch.isra.0+0x153/0x700 [ 13.915960] ? __switch_to+0x5d9/0xf60 [ 13.915995] ? dequeue_task_fair+0x166/0x4e0 [ 13.916034] ? __pfx_read_tsc+0x10/0x10 [ 13.916062] ? ktime_get_ts64+0x86/0x230 [ 13.916094] kunit_try_run_case+0x1a5/0x480 [ 13.916127] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.916153] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.916178] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.916201] ? __kthread_parkme+0x82/0x180 [ 13.916222] ? preempt_count_sub+0x50/0x80 [ 13.916246] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.916269] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.916291] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.916313] kthread+0x337/0x6f0 [ 13.916329] ? trace_preempt_on+0x20/0xc0 [ 13.916350] ? __pfx_kthread+0x10/0x10 [ 13.916367] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.916388] ? calculate_sigpending+0x7b/0xa0 [ 13.916409] ? __pfx_kthread+0x10/0x10 [ 13.916426] ret_from_fork+0x41/0x80 [ 13.916445] ? __pfx_kthread+0x10/0x10 [ 13.916462] ret_from_fork_asm+0x1a/0x30 [ 13.916493] </TASK> [ 13.916505] [ 13.925403] Allocated by task 277: [ 13.925650] kasan_save_stack+0x45/0x70 [ 13.925880] kasan_save_track+0x18/0x40 [ 13.926063] kasan_save_alloc_info+0x3b/0x50 [ 13.926243] __kasan_kmalloc+0xb7/0xc0 [ 13.926407] __kmalloc_cache_noprof+0x189/0x420 [ 13.926770] kasan_memcmp+0xb7/0x390 [ 13.927102] kunit_try_run_case+0x1a5/0x480 [ 13.927443] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.927876] kthread+0x337/0x6f0 [ 13.928197] ret_from_fork+0x41/0x80 [ 13.928545] ret_from_fork_asm+0x1a/0x30 [ 13.928995] [ 13.929228] The buggy address belongs to the object at ffff8881039efa40 [ 13.929228] which belongs to the cache kmalloc-32 of size 32 [ 13.930228] The buggy address is located 0 bytes to the right of [ 13.930228] allocated 24-byte region [ffff8881039efa40, ffff8881039efa58) [ 13.930918] [ 13.931099] The buggy address belongs to the physical page: [ 13.931408] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1039ef [ 13.931955] flags: 0x200000000000000(node=0|zone=2) [ 13.932153] page_type: f5(slab) [ 13.932383] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 13.933113] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 13.933511] page dumped because: kasan: bad access detected [ 13.933808] [ 13.934031] Memory state around the buggy address: [ 13.934277] ffff8881039ef900: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 13.934853] ffff8881039ef980: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 13.935252] >ffff8881039efa00: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 13.935667] ^ [ 13.935995] ffff8881039efa80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.936240] ffff8881039efb00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.936475] ==================================================================