Date
July 12, 2025, 11:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.454368] ================================================================== [ 16.454429] BUG: KASAN: slab-out-of-bounds in kmalloc_big_oob_right+0x2a4/0x2f0 [ 16.454476] Write of size 1 at addr fff00000c6685f00 by task kunit_try_catch/144 [ 16.454558] [ 16.454588] CPU: 1 UID: 0 PID: 144 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 16.454683] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.454708] Hardware name: linux,dummy-virt (DT) [ 16.454737] Call trace: [ 16.454757] show_stack+0x20/0x38 (C) [ 16.454853] dump_stack_lvl+0x8c/0xd0 [ 16.454921] print_report+0x118/0x5d0 [ 16.455018] kasan_report+0xdc/0x128 [ 16.455103] __asan_report_store1_noabort+0x20/0x30 [ 16.455450] kmalloc_big_oob_right+0x2a4/0x2f0 [ 16.455507] kunit_try_run_case+0x170/0x3f0 [ 16.455827] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.455954] kthread+0x328/0x630 [ 16.456053] ret_from_fork+0x10/0x20 [ 16.456264] [ 16.456511] Allocated by task 144: [ 16.456578] kasan_save_stack+0x3c/0x68 [ 16.456827] kasan_save_track+0x20/0x40 [ 16.456868] kasan_save_alloc_info+0x40/0x58 [ 16.456907] __kasan_kmalloc+0xd4/0xd8 [ 16.457304] __kmalloc_cache_noprof+0x16c/0x3c0 [ 16.457354] kmalloc_big_oob_right+0xb8/0x2f0 [ 16.457525] kunit_try_run_case+0x170/0x3f0 [ 16.457590] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.457634] kthread+0x328/0x630 [ 16.457665] ret_from_fork+0x10/0x20 [ 16.457700] [ 16.458204] The buggy address belongs to the object at fff00000c6684000 [ 16.458204] which belongs to the cache kmalloc-8k of size 8192 [ 16.458388] The buggy address is located 0 bytes to the right of [ 16.458388] allocated 7936-byte region [fff00000c6684000, fff00000c6685f00) [ 16.458459] [ 16.458479] The buggy address belongs to the physical page: [ 16.458510] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106680 [ 16.458930] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 16.459275] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 16.459367] page_type: f5(slab) [ 16.459431] raw: 0bfffe0000000040 fff00000c0002280 dead000000000122 0000000000000000 [ 16.459483] raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 16.459599] head: 0bfffe0000000040 fff00000c0002280 dead000000000122 0000000000000000 [ 16.459807] head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 16.460320] head: 0bfffe0000000003 ffffc1ffc319a001 00000000ffffffff 00000000ffffffff [ 16.460482] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 [ 16.460818] page dumped because: kasan: bad access detected [ 16.461067] [ 16.461229] Memory state around the buggy address: [ 16.461337] fff00000c6685e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 16.461724] fff00000c6685e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 16.461809] >fff00000c6685f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.462040] ^ [ 16.462076] fff00000c6685f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.462390] fff00000c6686000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.462432] ==================================================================
[ 12.374806] ================================================================== [ 12.376126] BUG: KASAN: slab-out-of-bounds in kmalloc_big_oob_right+0x316/0x370 [ 12.376802] Write of size 1 at addr ffff888101efdf00 by task kunit_try_catch/161 [ 12.377661] [ 12.377860] CPU: 1 UID: 0 PID: 161 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 12.377910] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.377922] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.377943] Call Trace: [ 12.377957] <TASK> [ 12.377976] dump_stack_lvl+0x73/0xb0 [ 12.378030] print_report+0xd1/0x610 [ 12.378054] ? __virt_addr_valid+0x1db/0x2d0 [ 12.378079] ? kmalloc_big_oob_right+0x316/0x370 [ 12.378101] ? kasan_complete_mode_report_info+0x2a/0x200 [ 12.378124] ? kmalloc_big_oob_right+0x316/0x370 [ 12.378147] kasan_report+0x141/0x180 [ 12.378169] ? kmalloc_big_oob_right+0x316/0x370 [ 12.378197] __asan_report_store1_noabort+0x1b/0x30 [ 12.378222] kmalloc_big_oob_right+0x316/0x370 [ 12.378245] ? __pfx_kmalloc_big_oob_right+0x10/0x10 [ 12.378281] ? __schedule+0x10cc/0x2b60 [ 12.378304] ? __pfx_read_tsc+0x10/0x10 [ 12.378326] ? ktime_get_ts64+0x86/0x230 [ 12.378352] kunit_try_run_case+0x1a5/0x480 [ 12.378378] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.378401] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.378426] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.378449] ? __kthread_parkme+0x82/0x180 [ 12.378471] ? preempt_count_sub+0x50/0x80 [ 12.378496] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.378520] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.378545] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.378570] kthread+0x337/0x6f0 [ 12.378589] ? trace_preempt_on+0x20/0xc0 [ 12.378613] ? __pfx_kthread+0x10/0x10 [ 12.378634] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.378655] ? calculate_sigpending+0x7b/0xa0 [ 12.378680] ? __pfx_kthread+0x10/0x10 [ 12.378706] ret_from_fork+0x116/0x1d0 [ 12.378725] ? __pfx_kthread+0x10/0x10 [ 12.378746] ret_from_fork_asm+0x1a/0x30 [ 12.378779] </TASK> [ 12.378790] [ 12.391174] Allocated by task 161: [ 12.391517] kasan_save_stack+0x45/0x70 [ 12.391862] kasan_save_track+0x18/0x40 [ 12.392252] kasan_save_alloc_info+0x3b/0x50 [ 12.392417] __kasan_kmalloc+0xb7/0xc0 [ 12.392550] __kmalloc_cache_noprof+0x189/0x420 [ 12.392708] kmalloc_big_oob_right+0xa9/0x370 [ 12.392860] kunit_try_run_case+0x1a5/0x480 [ 12.393024] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.393375] kthread+0x337/0x6f0 [ 12.393817] ret_from_fork+0x116/0x1d0 [ 12.394276] ret_from_fork_asm+0x1a/0x30 [ 12.394524] [ 12.394597] The buggy address belongs to the object at ffff888101efc000 [ 12.394597] which belongs to the cache kmalloc-8k of size 8192 [ 12.394965] The buggy address is located 0 bytes to the right of [ 12.394965] allocated 7936-byte region [ffff888101efc000, ffff888101efdf00) [ 12.396234] [ 12.396409] The buggy address belongs to the physical page: [ 12.396886] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101ef8 [ 12.397775] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 12.398338] flags: 0x200000000000040(head|node=0|zone=2) [ 12.398810] page_type: f5(slab) [ 12.398934] raw: 0200000000000040 ffff888100042280 dead000000000122 0000000000000000 [ 12.399182] raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 12.399431] head: 0200000000000040 ffff888100042280 dead000000000122 0000000000000000 [ 12.400158] head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 12.400811] head: 0200000000000003 ffffea000407be01 00000000ffffffff 00000000ffffffff [ 12.401611] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 [ 12.401897] page dumped because: kasan: bad access detected [ 12.402312] [ 12.402484] Memory state around the buggy address: [ 12.402912] ffff888101efde00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 12.403531] ffff888101efde80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 12.403752] >ffff888101efdf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.403964] ^ [ 12.404349] ffff888101efdf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.404962] ffff888101efe000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.405705] ==================================================================