Date
July 18, 2025, 1:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 31.542790] ================================================================== [ 31.542851] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_memset_2+0x150/0x2f8 [ 31.543132] Write of size 2 at addr fff00000c3efd977 by task kunit_try_catch/203 [ 31.543326] [ 31.543367] CPU: 0 UID: 0 PID: 203 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6-next-20250718 #1 PREEMPT [ 31.543706] Tainted: [B]=BAD_PAGE, [N]=TEST [ 31.543765] Hardware name: linux,dummy-virt (DT) [ 31.543852] Call trace: [ 31.543902] show_stack+0x20/0x38 (C) [ 31.543956] dump_stack_lvl+0x8c/0xd0 [ 31.544151] print_report+0x118/0x5e8 [ 31.544281] kasan_report+0xdc/0x128 [ 31.544506] kasan_check_range+0x100/0x1a8 [ 31.544680] __asan_memset+0x34/0x78 [ 31.544846] kmalloc_oob_memset_2+0x150/0x2f8 [ 31.544987] kunit_try_run_case+0x170/0x3f0 [ 31.545126] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.545194] kthread+0x328/0x630 [ 31.545465] ret_from_fork+0x10/0x20 [ 31.545637] [ 31.545681] Allocated by task 203: [ 31.545772] kasan_save_stack+0x3c/0x68 [ 31.545947] kasan_save_track+0x20/0x40 [ 31.546004] kasan_save_alloc_info+0x40/0x58 [ 31.546115] __kasan_kmalloc+0xd4/0xd8 [ 31.546417] __kmalloc_cache_noprof+0x16c/0x3c0 [ 31.546490] kmalloc_oob_memset_2+0xb0/0x2f8 [ 31.546586] kunit_try_run_case+0x170/0x3f0 [ 31.546624] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.546975] kthread+0x328/0x630 [ 31.547027] ret_from_fork+0x10/0x20 [ 31.547064] [ 31.547094] The buggy address belongs to the object at fff00000c3efd900 [ 31.547094] which belongs to the cache kmalloc-128 of size 128 [ 31.547151] The buggy address is located 119 bytes inside of [ 31.547151] allocated 120-byte region [fff00000c3efd900, fff00000c3efd978) [ 31.547221] [ 31.547242] The buggy address belongs to the physical page: [ 31.547285] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103efd [ 31.547339] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 31.547386] page_type: f5(slab) [ 31.547433] raw: 0bfffe0000000000 fff00000c0001a00 dead000000000100 dead000000000122 [ 31.547491] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 31.547529] page dumped because: kasan: bad access detected [ 31.547558] [ 31.547576] Memory state around the buggy address: [ 31.547606] fff00000c3efd800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.547647] fff00000c3efd880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.547699] >fff00000c3efd900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 31.548011] ^ [ 31.548058] fff00000c3efd980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.548345] fff00000c3efda00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.548419] ==================================================================
[ 24.920682] ================================================================== [ 24.921376] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_memset_2+0x166/0x330 [ 24.921667] Write of size 2 at addr ffff8881053b7077 by task kunit_try_catch/220 [ 24.922075] [ 24.922187] CPU: 0 UID: 0 PID: 220 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6-next-20250718 #1 PREEMPT(voluntary) [ 24.922250] Tainted: [B]=BAD_PAGE, [N]=TEST [ 24.922262] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 24.922284] Call Trace: [ 24.922297] <TASK> [ 24.922313] dump_stack_lvl+0x73/0xb0 [ 24.922349] print_report+0xd1/0x640 [ 24.922373] ? __virt_addr_valid+0x1db/0x2d0 [ 24.922398] ? kmalloc_oob_memset_2+0x166/0x330 [ 24.922418] ? kasan_complete_mode_report_info+0x2a/0x200 [ 24.922443] ? kmalloc_oob_memset_2+0x166/0x330 [ 24.922464] kasan_report+0x141/0x180 [ 24.922485] ? kmalloc_oob_memset_2+0x166/0x330 [ 24.922509] kasan_check_range+0x10c/0x1c0 [ 24.922532] __asan_memset+0x27/0x50 [ 24.922554] kmalloc_oob_memset_2+0x166/0x330 [ 24.922576] ? __pfx_kmalloc_oob_memset_2+0x10/0x10 [ 24.922597] ? __schedule+0x10da/0x2b60 [ 24.922626] ? __pfx_read_tsc+0x10/0x10 [ 24.922648] ? ktime_get_ts64+0x86/0x230 [ 24.922674] kunit_try_run_case+0x1a5/0x480 [ 24.922698] ? __pfx_kunit_try_run_case+0x10/0x10 [ 24.922719] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 24.922755] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 24.922787] ? __kthread_parkme+0x82/0x180 [ 24.922809] ? preempt_count_sub+0x50/0x80 [ 24.922843] ? __pfx_kunit_try_run_case+0x10/0x10 [ 24.922866] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.922888] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 24.922910] kthread+0x337/0x6f0 [ 24.922929] ? trace_preempt_on+0x20/0xc0 [ 24.922952] ? __pfx_kthread+0x10/0x10 [ 24.922972] ? _raw_spin_unlock_irq+0x47/0x80 [ 24.923001] ? calculate_sigpending+0x7b/0xa0 [ 24.923024] ? __pfx_kthread+0x10/0x10 [ 24.923045] ret_from_fork+0x116/0x1d0 [ 24.923063] ? __pfx_kthread+0x10/0x10 [ 24.923094] ret_from_fork_asm+0x1a/0x30 [ 24.923125] </TASK> [ 24.923136] [ 24.930163] Allocated by task 220: [ 24.930352] kasan_save_stack+0x45/0x70 [ 24.930549] kasan_save_track+0x18/0x40 [ 24.930788] kasan_save_alloc_info+0x3b/0x50 [ 24.931053] __kasan_kmalloc+0xb7/0xc0 [ 24.931320] __kmalloc_cache_noprof+0x189/0x420 [ 24.931550] kmalloc_oob_memset_2+0xac/0x330 [ 24.931694] kunit_try_run_case+0x1a5/0x480 [ 24.931832] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.932052] kthread+0x337/0x6f0 [ 24.932326] ret_from_fork+0x116/0x1d0 [ 24.932494] ret_from_fork_asm+0x1a/0x30 [ 24.932682] [ 24.932747] The buggy address belongs to the object at ffff8881053b7000 [ 24.932747] which belongs to the cache kmalloc-128 of size 128 [ 24.933223] The buggy address is located 119 bytes inside of [ 24.933223] allocated 120-byte region [ffff8881053b7000, ffff8881053b7078) [ 24.933699] [ 24.933793] The buggy address belongs to the physical page: [ 24.934012] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1053b7 [ 24.934411] flags: 0x200000000000000(node=0|zone=2) [ 24.934650] page_type: f5(slab) [ 24.934792] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 24.935018] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 24.935251] page dumped because: kasan: bad access detected [ 24.935415] [ 24.935476] Memory state around the buggy address: [ 24.935624] ffff8881053b6f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.935936] ffff8881053b6f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.936456] >ffff8881053b7000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 24.937149] ^ [ 24.937456] ffff8881053b7080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.937664] ffff8881053b7100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.937869] ==================================================================