Date
June 23, 2025, 7:07 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 32.289464] ================================================================== [ 32.289583] BUG: KASAN: slab-out-of-bounds in kmalloc_big_oob_right+0x2a4/0x2f0 [ 32.289715] Write of size 1 at addr fff00000c64f5f00 by task kunit_try_catch/156 [ 32.289824] [ 32.289898] CPU: 1 UID: 0 PID: 156 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc3-next-20250623 #1 PREEMPT [ 32.291005] Tainted: [B]=BAD_PAGE, [N]=TEST [ 32.291094] Hardware name: linux,dummy-virt (DT) [ 32.291173] Call trace: [ 32.291248] show_stack+0x20/0x38 (C) [ 32.291838] dump_stack_lvl+0x8c/0xd0 [ 32.292072] print_report+0x118/0x608 [ 32.292207] kasan_report+0xdc/0x128 [ 32.292539] __asan_report_store1_noabort+0x20/0x30 [ 32.292689] kmalloc_big_oob_right+0x2a4/0x2f0 [ 32.292802] kunit_try_run_case+0x170/0x3f0 [ 32.293151] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 32.293496] kthread+0x328/0x630 [ 32.293734] ret_from_fork+0x10/0x20 [ 32.293940] [ 32.293989] Allocated by task 156: [ 32.294077] kasan_save_stack+0x3c/0x68 [ 32.294193] kasan_save_track+0x20/0x40 [ 32.294287] kasan_save_alloc_info+0x40/0x58 [ 32.294391] __kasan_kmalloc+0xd4/0xd8 [ 32.294497] __kmalloc_cache_noprof+0x16c/0x3c0 [ 32.294603] kmalloc_big_oob_right+0xb8/0x2f0 [ 32.294768] kunit_try_run_case+0x170/0x3f0 [ 32.295041] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 32.295158] kthread+0x328/0x630 [ 32.295264] ret_from_fork+0x10/0x20 [ 32.295480] [ 32.295533] The buggy address belongs to the object at fff00000c64f4000 [ 32.295533] which belongs to the cache kmalloc-8k of size 8192 [ 32.295935] The buggy address is located 0 bytes to the right of [ 32.295935] allocated 7936-byte region [fff00000c64f4000, fff00000c64f5f00) [ 32.296344] [ 32.296471] The buggy address belongs to the physical page: [ 32.296546] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1064f0 [ 32.296666] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 32.297150] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 32.297508] page_type: f5(slab) [ 32.297695] raw: 0bfffe0000000040 fff00000c0002280 dead000000000100 dead000000000122 [ 32.297808] raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 32.297921] head: 0bfffe0000000040 fff00000c0002280 dead000000000100 dead000000000122 [ 32.298051] head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 32.298859] head: 0bfffe0000000003 ffffc1ffc3193c01 00000000ffffffff 00000000ffffffff [ 32.299043] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 [ 32.299272] page dumped because: kasan: bad access detected [ 32.299579] [ 32.299641] Memory state around the buggy address: [ 32.299955] fff00000c64f5e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 32.300474] fff00000c64f5e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 32.300586] >fff00000c64f5f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.300817] ^ [ 32.300924] fff00000c64f5f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.301363] fff00000c64f6000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.301471] ==================================================================
[ 21.144102] ================================================================== [ 21.144543] BUG: KASAN: slab-out-of-bounds in kmalloc_big_oob_right+0x316/0x370 [ 21.145149] Write of size 1 at addr ffff8881039c9f00 by task kunit_try_catch/173 [ 21.145570] [ 21.145768] CPU: 0 UID: 0 PID: 173 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc3-next-20250623 #1 PREEMPT(voluntary) [ 21.145847] Tainted: [B]=BAD_PAGE, [N]=TEST [ 21.146239] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 21.146272] Call Trace: [ 21.146288] <TASK> [ 21.146306] dump_stack_lvl+0x73/0xb0 [ 21.146343] print_report+0xd1/0x650 [ 21.146364] ? __virt_addr_valid+0x1db/0x2d0 [ 21.146405] ? kmalloc_big_oob_right+0x316/0x370 [ 21.146427] ? kasan_complete_mode_report_info+0x2a/0x200 [ 21.146451] ? kmalloc_big_oob_right+0x316/0x370 [ 21.146472] kasan_report+0x141/0x180 [ 21.146492] ? kmalloc_big_oob_right+0x316/0x370 [ 21.146516] __asan_report_store1_noabort+0x1b/0x30 [ 21.146539] kmalloc_big_oob_right+0x316/0x370 [ 21.146560] ? __pfx_kmalloc_big_oob_right+0x10/0x10 [ 21.146581] ? __schedule+0x10cc/0x2b60 [ 21.146601] ? __pfx_read_tsc+0x10/0x10 [ 21.146622] ? ktime_get_ts64+0x86/0x230 [ 21.146646] kunit_try_run_case+0x1a5/0x480 [ 21.146670] ? __pfx_kunit_try_run_case+0x10/0x10 [ 21.146691] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 21.146711] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 21.146732] ? __kthread_parkme+0x82/0x180 [ 21.146751] ? preempt_count_sub+0x50/0x80 [ 21.146773] ? __pfx_kunit_try_run_case+0x10/0x10 [ 21.146795] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 21.146816] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 21.146864] kthread+0x337/0x6f0 [ 21.146884] ? trace_preempt_on+0x20/0xc0 [ 21.146907] ? __pfx_kthread+0x10/0x10 [ 21.146925] ? _raw_spin_unlock_irq+0x47/0x80 [ 21.146944] ? calculate_sigpending+0x7b/0xa0 [ 21.146966] ? __pfx_kthread+0x10/0x10 [ 21.146986] ret_from_fork+0x116/0x1d0 [ 21.147003] ? __pfx_kthread+0x10/0x10 [ 21.147021] ret_from_fork_asm+0x1a/0x30 [ 21.147051] </TASK> [ 21.147063] [ 21.155301] Allocated by task 173: [ 21.155573] kasan_save_stack+0x45/0x70 [ 21.155734] kasan_save_track+0x18/0x40 [ 21.156074] kasan_save_alloc_info+0x3b/0x50 [ 21.156409] __kasan_kmalloc+0xb7/0xc0 [ 21.156691] __kmalloc_cache_noprof+0x189/0x420 [ 21.157072] kmalloc_big_oob_right+0xa9/0x370 [ 21.157310] kunit_try_run_case+0x1a5/0x480 [ 21.157558] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 21.157974] kthread+0x337/0x6f0 [ 21.158283] ret_from_fork+0x116/0x1d0 [ 21.158618] ret_from_fork_asm+0x1a/0x30 [ 21.158956] [ 21.159134] The buggy address belongs to the object at ffff8881039c8000 [ 21.159134] which belongs to the cache kmalloc-8k of size 8192 [ 21.159730] The buggy address is located 0 bytes to the right of [ 21.159730] allocated 7936-byte region [ffff8881039c8000, ffff8881039c9f00) [ 21.160444] [ 21.160637] The buggy address belongs to the physical page: [ 21.160958] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1039c8 [ 21.161335] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 21.161747] flags: 0x200000000000040(head|node=0|zone=2) [ 21.162110] page_type: f5(slab) [ 21.162398] raw: 0200000000000040 ffff888100042280 dead000000000122 0000000000000000 [ 21.162874] raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 21.163288] head: 0200000000000040 ffff888100042280 dead000000000122 0000000000000000 [ 21.163634] head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 21.163957] head: 0200000000000003 ffffea00040e7201 00000000ffffffff 00000000ffffffff [ 21.164358] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 [ 21.164729] page dumped because: kasan: bad access detected [ 21.165112] [ 21.165260] Memory state around the buggy address: [ 21.165539] ffff8881039c9e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 21.165804] ffff8881039c9e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 21.166330] >ffff8881039c9f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.166789] ^ [ 21.166973] ffff8881039c9f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.167413] ffff8881039ca000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.167646] ==================================================================