Date
July 4, 2025, 11:10 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 31.976581] ================================================================== [ 31.976644] BUG: KASAN: slab-out-of-bounds in memcmp+0x198/0x1d8 [ 31.976971] Read of size 1 at addr fff00000c5ad9998 by task kunit_try_catch/290 [ 31.977255] [ 31.977349] CPU: 1 UID: 0 PID: 290 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4-next-20250704 #1 PREEMPT [ 31.977447] Tainted: [B]=BAD_PAGE, [N]=TEST [ 31.977477] Hardware name: linux,dummy-virt (DT) [ 31.977524] Call trace: [ 31.977549] show_stack+0x20/0x38 (C) [ 31.977606] dump_stack_lvl+0x8c/0xd0 [ 31.977661] print_report+0x118/0x608 [ 31.977713] kasan_report+0xdc/0x128 [ 31.977762] __asan_report_load1_noabort+0x20/0x30 [ 31.977814] memcmp+0x198/0x1d8 [ 31.977869] kasan_memcmp+0x16c/0x300 [ 31.977929] kunit_try_run_case+0x170/0x3f0 [ 31.977980] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.978038] kthread+0x328/0x630 [ 31.978091] ret_from_fork+0x10/0x20 [ 31.978141] [ 31.978168] Allocated by task 290: [ 31.978202] kasan_save_stack+0x3c/0x68 [ 31.978246] kasan_save_track+0x20/0x40 [ 31.978287] kasan_save_alloc_info+0x40/0x58 [ 31.978333] __kasan_kmalloc+0xd4/0xd8 [ 31.978375] __kmalloc_cache_noprof+0x16c/0x3c0 [ 31.978425] kasan_memcmp+0xbc/0x300 [ 31.978464] kunit_try_run_case+0x170/0x3f0 [ 31.978504] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.978551] kthread+0x328/0x630 [ 31.978584] ret_from_fork+0x10/0x20 [ 31.978628] [ 31.978650] The buggy address belongs to the object at fff00000c5ad9980 [ 31.978650] which belongs to the cache kmalloc-32 of size 32 [ 31.978719] The buggy address is located 0 bytes to the right of [ 31.978719] allocated 24-byte region [fff00000c5ad9980, fff00000c5ad9998) [ 31.978794] [ 31.978820] The buggy address belongs to the physical page: [ 31.978853] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105ad9 [ 31.978929] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 31.979734] page_type: f5(slab) [ 31.979788] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 31.980017] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 31.980141] page dumped because: kasan: bad access detected [ 31.980323] [ 31.980468] Memory state around the buggy address: [ 31.980505] fff00000c5ad9880: 00 00 00 fc fc fc fc fc 00 00 00 04 fc fc fc fc [ 31.980569] fff00000c5ad9900: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 31.980855] >fff00000c5ad9980: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.980949] ^ [ 31.981016] fff00000c5ad9a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.981102] fff00000c5ad9a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.981204] ==================================================================
[ 27.003072] ================================================================== [ 27.004019] BUG: KASAN: slab-out-of-bounds in memcmp+0x1b4/0x1d0 [ 27.004664] Read of size 1 at addr ffff888105abc998 by task kunit_try_catch/306 [ 27.005128] [ 27.005541] CPU: 0 UID: 0 PID: 306 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4-next-20250704 #1 PREEMPT(voluntary) [ 27.005749] Tainted: [B]=BAD_PAGE, [N]=TEST [ 27.005766] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 27.005794] Call Trace: [ 27.005809] <TASK> [ 27.005832] dump_stack_lvl+0x73/0xb0 [ 27.005888] print_report+0xd1/0x650 [ 27.005917] ? __virt_addr_valid+0x1db/0x2d0 [ 27.005945] ? memcmp+0x1b4/0x1d0 [ 27.005967] ? kasan_complete_mode_report_info+0x2a/0x200 [ 27.005995] ? memcmp+0x1b4/0x1d0 [ 27.006017] kasan_report+0x141/0x180 [ 27.006040] ? memcmp+0x1b4/0x1d0 [ 27.006066] __asan_report_load1_noabort+0x18/0x20 [ 27.006092] memcmp+0x1b4/0x1d0 [ 27.006116] kasan_memcmp+0x18f/0x390 [ 27.006155] ? trace_hardirqs_on+0x37/0xe0 [ 27.006183] ? __pfx_kasan_memcmp+0x10/0x10 [ 27.006205] ? finish_task_switch.isra.0+0x153/0x700 [ 27.006230] ? __switch_to+0x47/0xf50 [ 27.006262] ? __pfx_read_tsc+0x10/0x10 [ 27.006287] ? ktime_get_ts64+0x86/0x230 [ 27.006314] kunit_try_run_case+0x1a5/0x480 [ 27.006344] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.006369] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 27.006407] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 27.006433] ? __kthread_parkme+0x82/0x180 [ 27.006457] ? preempt_count_sub+0x50/0x80 [ 27.006482] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.006509] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.006536] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 27.006562] kthread+0x337/0x6f0 [ 27.006584] ? trace_preempt_on+0x20/0xc0 [ 27.006607] ? __pfx_kthread+0x10/0x10 [ 27.006630] ? _raw_spin_unlock_irq+0x47/0x80 [ 27.006654] ? calculate_sigpending+0x7b/0xa0 [ 27.006681] ? __pfx_kthread+0x10/0x10 [ 27.006704] ret_from_fork+0x116/0x1d0 [ 27.006726] ? __pfx_kthread+0x10/0x10 [ 27.006749] ret_from_fork_asm+0x1a/0x30 [ 27.006783] </TASK> [ 27.006797] [ 27.023027] Allocated by task 306: [ 27.023769] kasan_save_stack+0x45/0x70 [ 27.024334] kasan_save_track+0x18/0x40 [ 27.024846] kasan_save_alloc_info+0x3b/0x50 [ 27.025247] __kasan_kmalloc+0xb7/0xc0 [ 27.025474] __kmalloc_cache_noprof+0x189/0x420 [ 27.026050] kasan_memcmp+0xb7/0x390 [ 27.026220] kunit_try_run_case+0x1a5/0x480 [ 27.026798] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.027608] kthread+0x337/0x6f0 [ 27.027815] ret_from_fork+0x116/0x1d0 [ 27.028001] ret_from_fork_asm+0x1a/0x30 [ 27.028432] [ 27.028630] The buggy address belongs to the object at ffff888105abc980 [ 27.028630] which belongs to the cache kmalloc-32 of size 32 [ 27.030098] The buggy address is located 0 bytes to the right of [ 27.030098] allocated 24-byte region [ffff888105abc980, ffff888105abc998) [ 27.030536] [ 27.030618] The buggy address belongs to the physical page: [ 27.030811] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105abc [ 27.031161] flags: 0x200000000000000(node=0|zone=2) [ 27.031656] page_type: f5(slab) [ 27.031845] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 27.032309] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 27.032705] page dumped because: kasan: bad access detected [ 27.032894] [ 27.032967] Memory state around the buggy address: [ 27.033416] ffff888105abc880: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 27.033800] ffff888105abc900: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 27.034102] >ffff888105abc980: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.034563] ^ [ 27.034741] ffff888105abca00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.035225] ffff888105abca80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.035613] ==================================================================