Date
July 10, 2025, 6:10 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.533820] ================================================================== [ 16.533881] BUG: KASAN: slab-out-of-bounds in kmalloc_big_oob_right+0x2a4/0x2f0 [ 16.534682] Write of size 1 at addr fff00000c65adf00 by task kunit_try_catch/144 [ 16.534734] [ 16.534769] CPU: 1 UID: 0 PID: 144 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 16.534850] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.534876] Hardware name: linux,dummy-virt (DT) [ 16.534905] Call trace: [ 16.534927] show_stack+0x20/0x38 (C) [ 16.535857] dump_stack_lvl+0x8c/0xd0 [ 16.536270] print_report+0x118/0x608 [ 16.536677] kasan_report+0xdc/0x128 [ 16.536799] __asan_report_store1_noabort+0x20/0x30 [ 16.537252] kmalloc_big_oob_right+0x2a4/0x2f0 [ 16.537460] kunit_try_run_case+0x170/0x3f0 [ 16.537574] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.537853] kthread+0x328/0x630 [ 16.538109] ret_from_fork+0x10/0x20 [ 16.538423] [ 16.538448] Allocated by task 144: [ 16.538486] kasan_save_stack+0x3c/0x68 [ 16.538529] kasan_save_track+0x20/0x40 [ 16.538566] kasan_save_alloc_info+0x40/0x58 [ 16.539238] __kasan_kmalloc+0xd4/0xd8 [ 16.539661] __kmalloc_cache_noprof+0x16c/0x3c0 [ 16.539942] kmalloc_big_oob_right+0xb8/0x2f0 [ 16.539990] kunit_try_run_case+0x170/0x3f0 [ 16.540028] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.540416] kthread+0x328/0x630 [ 16.540458] ret_from_fork+0x10/0x20 [ 16.540530] [ 16.540636] The buggy address belongs to the object at fff00000c65ac000 [ 16.540636] which belongs to the cache kmalloc-8k of size 8192 [ 16.541050] The buggy address is located 0 bytes to the right of [ 16.541050] allocated 7936-byte region [fff00000c65ac000, fff00000c65adf00) [ 16.541515] [ 16.541560] The buggy address belongs to the physical page: [ 16.541592] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1065a8 [ 16.541816] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 16.542004] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 16.542057] page_type: f5(slab) [ 16.542095] raw: 0bfffe0000000040 fff00000c0002280 dead000000000122 0000000000000000 [ 16.542519] raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 16.542571] head: 0bfffe0000000040 fff00000c0002280 dead000000000122 0000000000000000 [ 16.543080] head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 16.543464] head: 0bfffe0000000003 ffffc1ffc3196a01 00000000ffffffff 00000000ffffffff [ 16.543539] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 [ 16.543586] page dumped because: kasan: bad access detected [ 16.544007] [ 16.544075] Memory state around the buggy address: [ 16.544109] fff00000c65ade00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 16.544150] fff00000c65ade80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 16.544192] >fff00000c65adf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.544804] ^ [ 16.545022] fff00000c65adf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.545163] fff00000c65ae000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.545446] ==================================================================
[ 12.015357] ================================================================== [ 12.015970] BUG: KASAN: slab-out-of-bounds in kmalloc_big_oob_right+0x316/0x370 [ 12.016390] Write of size 1 at addr ffff8881037c9f00 by task kunit_try_catch/161 [ 12.017068] [ 12.017235] CPU: 0 UID: 0 PID: 161 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 12.017277] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.017288] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.017307] Call Trace: [ 12.017318] <TASK> [ 12.017333] dump_stack_lvl+0x73/0xb0 [ 12.017362] print_report+0xd1/0x650 [ 12.017383] ? __virt_addr_valid+0x1db/0x2d0 [ 12.017405] ? kmalloc_big_oob_right+0x316/0x370 [ 12.017427] ? kasan_complete_mode_report_info+0x2a/0x200 [ 12.017450] ? kmalloc_big_oob_right+0x316/0x370 [ 12.017472] kasan_report+0x141/0x180 [ 12.017493] ? kmalloc_big_oob_right+0x316/0x370 [ 12.017520] __asan_report_store1_noabort+0x1b/0x30 [ 12.017545] kmalloc_big_oob_right+0x316/0x370 [ 12.017567] ? __pfx_kmalloc_big_oob_right+0x10/0x10 [ 12.017590] ? __schedule+0x10cc/0x2b60 [ 12.017612] ? __pfx_read_tsc+0x10/0x10 [ 12.017631] ? ktime_get_ts64+0x86/0x230 [ 12.017655] kunit_try_run_case+0x1a5/0x480 [ 12.017679] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.017702] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.017724] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.017747] ? __kthread_parkme+0x82/0x180 [ 12.017766] ? preempt_count_sub+0x50/0x80 [ 12.017789] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.017813] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.017837] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.017861] kthread+0x337/0x6f0 [ 12.017879] ? trace_preempt_on+0x20/0xc0 [ 12.017903] ? __pfx_kthread+0x10/0x10 [ 12.017923] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.017995] ? calculate_sigpending+0x7b/0xa0 [ 12.018021] ? __pfx_kthread+0x10/0x10 [ 12.018056] ret_from_fork+0x116/0x1d0 [ 12.018074] ? __pfx_kthread+0x10/0x10 [ 12.018095] ret_from_fork_asm+0x1a/0x30 [ 12.018125] </TASK> [ 12.018135] [ 12.029215] Allocated by task 161: [ 12.029632] kasan_save_stack+0x45/0x70 [ 12.029924] kasan_save_track+0x18/0x40 [ 12.030374] kasan_save_alloc_info+0x3b/0x50 [ 12.030688] __kasan_kmalloc+0xb7/0xc0 [ 12.031116] __kmalloc_cache_noprof+0x189/0x420 [ 12.031345] kmalloc_big_oob_right+0xa9/0x370 [ 12.031932] kunit_try_run_case+0x1a5/0x480 [ 12.032395] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.032576] kthread+0x337/0x6f0 [ 12.032695] ret_from_fork+0x116/0x1d0 [ 12.032896] ret_from_fork_asm+0x1a/0x30 [ 12.033300] [ 12.033467] The buggy address belongs to the object at ffff8881037c8000 [ 12.033467] which belongs to the cache kmalloc-8k of size 8192 [ 12.034696] The buggy address is located 0 bytes to the right of [ 12.034696] allocated 7936-byte region [ffff8881037c8000, ffff8881037c9f00) [ 12.035814] [ 12.036051] The buggy address belongs to the physical page: [ 12.036232] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1037c8 [ 12.036476] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 12.036702] flags: 0x200000000000040(head|node=0|zone=2) [ 12.037075] page_type: f5(slab) [ 12.037397] raw: 0200000000000040 ffff888100042280 dead000000000122 0000000000000000 [ 12.038157] raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 12.038828] head: 0200000000000040 ffff888100042280 dead000000000122 0000000000000000 [ 12.039817] head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 12.040654] head: 0200000000000003 ffffea00040df201 00000000ffffffff 00000000ffffffff [ 12.041467] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 [ 12.042239] page dumped because: kasan: bad access detected [ 12.042413] [ 12.042482] Memory state around the buggy address: [ 12.042632] ffff8881037c9e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 12.042854] ffff8881037c9e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 12.043379] >ffff8881037c9f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.043655] ^ [ 12.043770] ffff8881037c9f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.044314] ffff8881037ca000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.044959] ==================================================================