Date
July 22, 2025, 5:13 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 30.368072] ================================================================== [ 30.368365] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_memset_2+0x150/0x2f8 [ 30.368439] Write of size 2 at addr fff00000c3f71b77 by task kunit_try_catch/203 [ 30.368883] [ 30.368948] CPU: 1 UID: 0 PID: 203 Comm: kunit_try_catch Tainted: G B W N 6.16.0-rc7-next-20250722 #1 PREEMPT [ 30.369123] Tainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST [ 30.369230] Hardware name: linux,dummy-virt (DT) [ 30.369309] Call trace: [ 30.369642] show_stack+0x20/0x38 (C) [ 30.369733] dump_stack_lvl+0x8c/0xd0 [ 30.369867] print_report+0x118/0x5e8 [ 30.369986] kasan_report+0xdc/0x128 [ 30.370043] kasan_check_range+0x100/0x1a8 [ 30.370221] __asan_memset+0x34/0x78 [ 30.370607] kmalloc_oob_memset_2+0x150/0x2f8 [ 30.370693] kunit_try_run_case+0x170/0x3f0 [ 30.371404] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 30.371499] kthread+0x328/0x630 [ 30.371587] ret_from_fork+0x10/0x20 [ 30.371675] [ 30.371730] Allocated by task 203: [ 30.371795] kasan_save_stack+0x3c/0x68 [ 30.372041] kasan_save_track+0x20/0x40 [ 30.372113] kasan_save_alloc_info+0x40/0x58 [ 30.372434] __kasan_kmalloc+0xd4/0xd8 [ 30.372624] __kmalloc_cache_noprof+0x16c/0x3c0 [ 30.372949] kmalloc_oob_memset_2+0xb0/0x2f8 [ 30.373097] kunit_try_run_case+0x170/0x3f0 [ 30.373233] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 30.373313] kthread+0x328/0x630 [ 30.373694] ret_from_fork+0x10/0x20 [ 30.373806] [ 30.373844] The buggy address belongs to the object at fff00000c3f71b00 [ 30.373844] which belongs to the cache kmalloc-128 of size 128 [ 30.374209] The buggy address is located 119 bytes inside of [ 30.374209] allocated 120-byte region [fff00000c3f71b00, fff00000c3f71b78) [ 30.374281] [ 30.374310] The buggy address belongs to the physical page: [ 30.374364] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103f71 [ 30.374460] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 30.374512] page_type: f5(slab) [ 30.374571] raw: 0bfffe0000000000 fff00000c0001a00 dead000000000100 dead000000000122 [ 30.374629] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 30.374667] page dumped because: kasan: bad access detected [ 30.374696] [ 30.374715] Memory state around the buggy address: [ 30.374747] fff00000c3f71a00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.374799] fff00000c3f71a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.375068] >fff00000c3f71b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 30.375253] ^ [ 30.375329] fff00000c3f71b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.375371] fff00000c3f71c00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.375653] ==================================================================
[ 25.182873] ================================================================== [ 25.183491] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_memset_2+0x166/0x330 [ 25.184151] Write of size 2 at addr ffff8881058a9377 by task kunit_try_catch/220 [ 25.185093] [ 25.185284] CPU: 1 UID: 0 PID: 220 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7-next-20250722 #1 PREEMPT(voluntary) [ 25.185333] Tainted: [B]=BAD_PAGE, [N]=TEST [ 25.185346] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 25.185369] Call Trace: [ 25.185382] <TASK> [ 25.185399] dump_stack_lvl+0x73/0xb0 [ 25.185505] print_report+0xd1/0x640 [ 25.185530] ? __virt_addr_valid+0x1db/0x2d0 [ 25.185556] ? kmalloc_oob_memset_2+0x166/0x330 [ 25.185577] ? kasan_complete_mode_report_info+0x2a/0x200 [ 25.185603] ? kmalloc_oob_memset_2+0x166/0x330 [ 25.185626] kasan_report+0x141/0x180 [ 25.185648] ? kmalloc_oob_memset_2+0x166/0x330 [ 25.185674] kasan_check_range+0x10c/0x1c0 [ 25.185698] __asan_memset+0x27/0x50 [ 25.185722] kmalloc_oob_memset_2+0x166/0x330 [ 25.185745] ? __pfx_kmalloc_oob_memset_2+0x10/0x10 [ 25.185768] ? __schedule+0x10da/0x2b60 [ 25.185793] ? __pfx_read_tsc+0x10/0x10 [ 25.185817] ? ktime_get_ts64+0x86/0x230 [ 25.185853] kunit_try_run_case+0x1a5/0x480 [ 25.185879] ? __pfx_kunit_try_run_case+0x10/0x10 [ 25.185901] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 25.185926] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 25.185951] ? __kthread_parkme+0x82/0x180 [ 25.185973] ? preempt_count_sub+0x50/0x80 [ 25.185998] ? __pfx_kunit_try_run_case+0x10/0x10 [ 25.186022] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.186045] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 25.186068] kthread+0x337/0x6f0 [ 25.186088] ? trace_preempt_on+0x20/0xc0 [ 25.186113] ? __pfx_kthread+0x10/0x10 [ 25.186134] ? _raw_spin_unlock_irq+0x47/0x80 [ 25.186157] ? calculate_sigpending+0x7b/0xa0 [ 25.186193] ? __pfx_kthread+0x10/0x10 [ 25.186215] ret_from_fork+0x116/0x1d0 [ 25.186234] ? __pfx_kthread+0x10/0x10 [ 25.186255] ret_from_fork_asm+0x1a/0x30 [ 25.186286] </TASK> [ 25.186298] [ 25.200030] Allocated by task 220: [ 25.200398] kasan_save_stack+0x45/0x70 [ 25.200792] kasan_save_track+0x18/0x40 [ 25.200979] kasan_save_alloc_info+0x3b/0x50 [ 25.201408] __kasan_kmalloc+0xb7/0xc0 [ 25.201824] __kmalloc_cache_noprof+0x189/0x420 [ 25.202279] kmalloc_oob_memset_2+0xac/0x330 [ 25.202719] kunit_try_run_case+0x1a5/0x480 [ 25.202875] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.203052] kthread+0x337/0x6f0 [ 25.203187] ret_from_fork+0x116/0x1d0 [ 25.203588] ret_from_fork_asm+0x1a/0x30 [ 25.203968] [ 25.204144] The buggy address belongs to the object at ffff8881058a9300 [ 25.204144] which belongs to the cache kmalloc-128 of size 128 [ 25.205436] The buggy address is located 119 bytes inside of [ 25.205436] allocated 120-byte region [ffff8881058a9300, ffff8881058a9378) [ 25.206723] [ 25.206892] The buggy address belongs to the physical page: [ 25.207192] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1058a9 [ 25.207979] flags: 0x200000000000000(node=0|zone=2) [ 25.208145] page_type: f5(slab) [ 25.208260] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 25.208534] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 25.209353] page dumped because: kasan: bad access detected [ 25.209894] [ 25.210094] Memory state around the buggy address: [ 25.210639] ffff8881058a9200: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 25.211415] ffff8881058a9280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.212129] >ffff8881058a9300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 25.212684] ^ [ 25.212953] ffff8881058a9380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.213598] ffff8881058a9400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.214310] ==================================================================