Date
July 17, 2025, 10:12 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 29.518731] ================================================================== [ 29.518826] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_16+0x3a0/0x3f8 [ 29.518882] Write of size 16 at addr fff00000c7ac92e0 by task kunit_try_catch/197 [ 29.518930] [ 29.518981] CPU: 1 UID: 0 PID: 197 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6-next-20250717 #1 PREEMPT [ 29.519077] Tainted: [B]=BAD_PAGE, [N]=TEST [ 29.519103] Hardware name: linux,dummy-virt (DT) [ 29.519133] Call trace: [ 29.519155] show_stack+0x20/0x38 (C) [ 29.519218] dump_stack_lvl+0x8c/0xd0 [ 29.519274] print_report+0x118/0x5d0 [ 29.519319] kasan_report+0xdc/0x128 [ 29.519362] __asan_report_store16_noabort+0x20/0x30 [ 29.519410] kmalloc_oob_16+0x3a0/0x3f8 [ 29.519455] kunit_try_run_case+0x170/0x3f0 [ 29.519511] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 29.519576] kthread+0x328/0x630 [ 29.519618] ret_from_fork+0x10/0x20 [ 29.519664] [ 29.519681] Allocated by task 197: [ 29.519709] kasan_save_stack+0x3c/0x68 [ 29.519746] kasan_save_track+0x20/0x40 [ 29.519780] kasan_save_alloc_info+0x40/0x58 [ 29.519817] __kasan_kmalloc+0xd4/0xd8 [ 29.519850] __kmalloc_cache_noprof+0x16c/0x3c0 [ 29.519898] kmalloc_oob_16+0xb4/0x3f8 [ 29.519934] kunit_try_run_case+0x170/0x3f0 [ 29.519978] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 29.520019] kthread+0x328/0x630 [ 29.520050] ret_from_fork+0x10/0x20 [ 29.520753] [ 29.520929] The buggy address belongs to the object at fff00000c7ac92e0 [ 29.520929] which belongs to the cache kmalloc-16 of size 16 [ 29.521178] The buggy address is located 0 bytes inside of [ 29.521178] allocated 13-byte region [fff00000c7ac92e0, fff00000c7ac92ed) [ 29.521301] [ 29.521322] The buggy address belongs to the physical page: [ 29.521369] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107ac9 [ 29.521739] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 29.521823] page_type: f5(slab) [ 29.521910] raw: 0bfffe0000000000 fff00000c0001640 dead000000000100 dead000000000122 [ 29.521974] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 29.522345] page dumped because: kasan: bad access detected [ 29.522430] [ 29.522507] Memory state around the buggy address: [ 29.522604] fff00000c7ac9180: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 29.522656] fff00000c7ac9200: fa fb fc fc fa fb fc fc fa fb fc fc 00 00 fc fc [ 29.522721] >fff00000c7ac9280: fa fb fc fc fa fb fc fc fa fb fc fc 00 05 fc fc [ 29.523083] ^ [ 29.523179] fff00000c7ac9300: 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 29.523253] fff00000c7ac9380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 29.523527] ==================================================================
[ 25.691827] ================================================================== [ 25.692271] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_16+0x452/0x4a0 [ 25.692695] Write of size 16 at addr ffff888104561c80 by task kunit_try_catch/215 [ 25.692982] [ 25.693096] CPU: 1 UID: 0 PID: 215 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6-next-20250717 #1 PREEMPT(voluntary) [ 25.693143] Tainted: [B]=BAD_PAGE, [N]=TEST [ 25.693154] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 25.693173] Call Trace: [ 25.693185] <TASK> [ 25.693199] dump_stack_lvl+0x73/0xb0 [ 25.693228] print_report+0xd1/0x610 [ 25.693249] ? __virt_addr_valid+0x1db/0x2d0 [ 25.693272] ? kmalloc_oob_16+0x452/0x4a0 [ 25.693291] ? kasan_complete_mode_report_info+0x2a/0x200 [ 25.693316] ? kmalloc_oob_16+0x452/0x4a0 [ 25.693402] kasan_report+0x141/0x180 [ 25.693423] ? kmalloc_oob_16+0x452/0x4a0 [ 25.693448] __asan_report_store16_noabort+0x1b/0x30 [ 25.693472] kmalloc_oob_16+0x452/0x4a0 [ 25.693492] ? __pfx_kmalloc_oob_16+0x10/0x10 [ 25.693521] ? __schedule+0x10c6/0x2b60 [ 25.693544] ? __pfx_read_tsc+0x10/0x10 [ 25.693564] ? ktime_get_ts64+0x86/0x230 [ 25.693587] kunit_try_run_case+0x1a5/0x480 [ 25.693610] ? __pfx_kunit_try_run_case+0x10/0x10 [ 25.693631] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 25.693652] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 25.693674] ? __kthread_parkme+0x82/0x180 [ 25.693697] ? preempt_count_sub+0x50/0x80 [ 25.693720] ? __pfx_kunit_try_run_case+0x10/0x10 [ 25.693742] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.693764] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 25.693787] kthread+0x337/0x6f0 [ 25.693805] ? trace_preempt_on+0x20/0xc0 [ 25.693828] ? __pfx_kthread+0x10/0x10 [ 25.693848] ? _raw_spin_unlock_irq+0x47/0x80 [ 25.693869] ? calculate_sigpending+0x7b/0xa0 [ 25.693891] ? __pfx_kthread+0x10/0x10 [ 25.693911] ret_from_fork+0x116/0x1d0 [ 25.693936] ? __pfx_kthread+0x10/0x10 [ 25.693955] ret_from_fork_asm+0x1a/0x30 [ 25.693986] </TASK> [ 25.693995] [ 25.700896] Allocated by task 215: [ 25.701044] kasan_save_stack+0x45/0x70 [ 25.701251] kasan_save_track+0x18/0x40 [ 25.701417] kasan_save_alloc_info+0x3b/0x50 [ 25.701557] __kasan_kmalloc+0xb7/0xc0 [ 25.701680] __kmalloc_cache_noprof+0x189/0x420 [ 25.701825] kmalloc_oob_16+0xa8/0x4a0 [ 25.701981] kunit_try_run_case+0x1a5/0x480 [ 25.702189] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.702426] kthread+0x337/0x6f0 [ 25.702585] ret_from_fork+0x116/0x1d0 [ 25.702762] ret_from_fork_asm+0x1a/0x30 [ 25.702904] [ 25.702967] The buggy address belongs to the object at ffff888104561c80 [ 25.702967] which belongs to the cache kmalloc-16 of size 16 [ 25.703417] The buggy address is located 0 bytes inside of [ 25.703417] allocated 13-byte region [ffff888104561c80, ffff888104561c8d) [ 25.703945] [ 25.704037] The buggy address belongs to the physical page: [ 25.704293] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x104561 [ 25.704624] flags: 0x200000000000000(node=0|zone=2) [ 25.704866] page_type: f5(slab) [ 25.705003] raw: 0200000000000000 ffff888100041640 dead000000000100 dead000000000122 [ 25.705266] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 25.705663] page dumped because: kasan: bad access detected [ 25.705907] [ 25.705978] Memory state around the buggy address: [ 25.706281] ffff888104561b80: fa fb fc fc 00 00 fc fc fa fb fc fc fa fb fc fc [ 25.706577] ffff888104561c00: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 25.706864] >ffff888104561c80: 00 05 fc fc 00 00 fc fc fc fc fc fc fc fc fc fc [ 25.707186] ^ [ 25.707452] ffff888104561d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.707729] ffff888104561d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.707937] ==================================================================