Date
July 12, 2025, 11:09 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.896940] ================================================================== [ 18.897086] BUG: KASAN: slab-out-of-bounds in kmalloc_big_oob_right+0x2a4/0x2f0 [ 18.898332] Write of size 1 at addr fff00000c78e9f00 by task kunit_try_catch/145 [ 18.898520] [ 18.899109] CPU: 0 UID: 0 PID: 145 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 18.899745] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.900249] Hardware name: linux,dummy-virt (DT) [ 18.900340] Call trace: [ 18.900395] show_stack+0x20/0x38 (C) [ 18.900521] dump_stack_lvl+0x8c/0xd0 [ 18.901526] print_report+0x118/0x608 [ 18.901750] kasan_report+0xdc/0x128 [ 18.901857] __asan_report_store1_noabort+0x20/0x30 [ 18.901963] kmalloc_big_oob_right+0x2a4/0x2f0 [ 18.903135] kunit_try_run_case+0x170/0x3f0 [ 18.903352] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.903476] kthread+0x328/0x630 [ 18.903577] ret_from_fork+0x10/0x20 [ 18.903691] [ 18.903735] Allocated by task 145: [ 18.904992] kasan_save_stack+0x3c/0x68 [ 18.905390] kasan_save_track+0x20/0x40 [ 18.905467] kasan_save_alloc_info+0x40/0x58 [ 18.906150] __kasan_kmalloc+0xd4/0xd8 [ 18.906407] __kmalloc_cache_noprof+0x16c/0x3c0 [ 18.907061] kmalloc_big_oob_right+0xb8/0x2f0 [ 18.907240] kunit_try_run_case+0x170/0x3f0 [ 18.907656] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.907847] kthread+0x328/0x630 [ 18.907928] ret_from_fork+0x10/0x20 [ 18.908288] [ 18.908475] The buggy address belongs to the object at fff00000c78e8000 [ 18.908475] which belongs to the cache kmalloc-8k of size 8192 [ 18.909134] The buggy address is located 0 bytes to the right of [ 18.909134] allocated 7936-byte region [fff00000c78e8000, fff00000c78e9f00) [ 18.909805] [ 18.909904] The buggy address belongs to the physical page: [ 18.910542] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1078e8 [ 18.910726] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 18.910880] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 18.911033] page_type: f5(slab) [ 18.911142] raw: 0bfffe0000000040 fff00000c0002280 dead000000000122 0000000000000000 [ 18.912879] raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 18.913016] head: 0bfffe0000000040 fff00000c0002280 dead000000000122 0000000000000000 [ 18.913151] head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 18.913265] head: 0bfffe0000000003 ffffc1ffc31e3a01 00000000ffffffff 00000000ffffffff [ 18.913319] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 [ 18.913363] page dumped because: kasan: bad access detected [ 18.913397] [ 18.913418] Memory state around the buggy address: [ 18.913458] fff00000c78e9e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 18.913503] fff00000c78e9e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 18.913547] >fff00000c78e9f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.913586] ^ [ 18.913617] fff00000c78e9f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.913660] fff00000c78ea000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.913699] ==================================================================
[ 12.124558] ================================================================== [ 12.125281] BUG: KASAN: slab-out-of-bounds in kmalloc_big_oob_right+0x316/0x370 [ 12.125604] Write of size 1 at addr ffff888102bfdf00 by task kunit_try_catch/162 [ 12.126473] [ 12.126583] CPU: 0 UID: 0 PID: 162 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 12.126628] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.126639] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.126659] Call Trace: [ 12.126683] <TASK> [ 12.126699] dump_stack_lvl+0x73/0xb0 [ 12.126730] print_report+0xd1/0x650 [ 12.126763] ? __virt_addr_valid+0x1db/0x2d0 [ 12.126787] ? kmalloc_big_oob_right+0x316/0x370 [ 12.126809] ? kasan_complete_mode_report_info+0x2a/0x200 [ 12.126831] ? kmalloc_big_oob_right+0x316/0x370 [ 12.126854] kasan_report+0x141/0x180 [ 12.126875] ? kmalloc_big_oob_right+0x316/0x370 [ 12.126902] __asan_report_store1_noabort+0x1b/0x30 [ 12.126927] kmalloc_big_oob_right+0x316/0x370 [ 12.126950] ? __pfx_kmalloc_big_oob_right+0x10/0x10 [ 12.126973] ? __schedule+0x10cc/0x2b60 [ 12.126995] ? __pfx_read_tsc+0x10/0x10 [ 12.127015] ? ktime_get_ts64+0x86/0x230 [ 12.127039] kunit_try_run_case+0x1a5/0x480 [ 12.127063] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.127085] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.127108] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.127131] ? __kthread_parkme+0x82/0x180 [ 12.127151] ? preempt_count_sub+0x50/0x80 [ 12.127175] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.127199] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.127223] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.127248] kthread+0x337/0x6f0 [ 12.127266] ? trace_preempt_on+0x20/0xc0 [ 12.127290] ? __pfx_kthread+0x10/0x10 [ 12.127311] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.127332] ? calculate_sigpending+0x7b/0xa0 [ 12.127355] ? __pfx_kthread+0x10/0x10 [ 12.127376] ret_from_fork+0x116/0x1d0 [ 12.127394] ? __pfx_kthread+0x10/0x10 [ 12.127414] ret_from_fork_asm+0x1a/0x30 [ 12.127445] </TASK> [ 12.127455] [ 12.134893] Allocated by task 162: [ 12.135071] kasan_save_stack+0x45/0x70 [ 12.135265] kasan_save_track+0x18/0x40 [ 12.135425] kasan_save_alloc_info+0x3b/0x50 [ 12.135613] __kasan_kmalloc+0xb7/0xc0 [ 12.135868] __kmalloc_cache_noprof+0x189/0x420 [ 12.136103] kmalloc_big_oob_right+0xa9/0x370 [ 12.136289] kunit_try_run_case+0x1a5/0x480 [ 12.136455] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.136718] kthread+0x337/0x6f0 [ 12.136902] ret_from_fork+0x116/0x1d0 [ 12.137055] ret_from_fork_asm+0x1a/0x30 [ 12.137258] [ 12.137350] The buggy address belongs to the object at ffff888102bfc000 [ 12.137350] which belongs to the cache kmalloc-8k of size 8192 [ 12.138043] The buggy address is located 0 bytes to the right of [ 12.138043] allocated 7936-byte region [ffff888102bfc000, ffff888102bfdf00) [ 12.138566] [ 12.138648] The buggy address belongs to the physical page: [ 12.138863] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102bf8 [ 12.139093] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 12.139307] flags: 0x200000000000040(head|node=0|zone=2) [ 12.139521] page_type: f5(slab) [ 12.139680] raw: 0200000000000040 ffff888100042280 dead000000000122 0000000000000000 [ 12.140038] raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 12.140327] head: 0200000000000040 ffff888100042280 dead000000000122 0000000000000000 [ 12.140546] head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 12.141048] head: 0200000000000003 ffffea00040afe01 00000000ffffffff 00000000ffffffff [ 12.141391] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 [ 12.141658] page dumped because: kasan: bad access detected [ 12.141919] [ 12.142005] Memory state around the buggy address: [ 12.142192] ffff888102bfde00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 12.142466] ffff888102bfde80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 12.142759] >ffff888102bfdf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.143052] ^ [ 12.143196] ffff888102bfdf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.143444] ffff888102bfe000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.143646] ==================================================================