Date
July 8, 2025, 11:10 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 30.901870] ================================================================== [ 30.901929] BUG: KASAN: slab-out-of-bounds in kmalloc_big_oob_right+0x2a4/0x2f0 [ 30.901976] Write of size 1 at addr fff00000c6455f00 by task kunit_try_catch/175 [ 30.902023] [ 30.902065] CPU: 0 UID: 0 PID: 175 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5-next-20250708 #1 PREEMPT [ 30.902149] Tainted: [B]=BAD_PAGE, [N]=TEST [ 30.902174] Hardware name: linux,dummy-virt (DT) [ 30.902203] Call trace: [ 30.902248] show_stack+0x20/0x38 (C) [ 30.902295] dump_stack_lvl+0x8c/0xd0 [ 30.902341] print_report+0x118/0x5d0 [ 30.902386] kasan_report+0xdc/0x128 [ 30.902439] __asan_report_store1_noabort+0x20/0x30 [ 30.902487] kmalloc_big_oob_right+0x2a4/0x2f0 [ 30.902534] kunit_try_run_case+0x170/0x3f0 [ 30.902631] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 30.902702] kthread+0x328/0x630 [ 30.902749] ret_from_fork+0x10/0x20 [ 30.902796] [ 30.902813] Allocated by task 175: [ 30.902840] kasan_save_stack+0x3c/0x68 [ 30.902880] kasan_save_track+0x20/0x40 [ 30.902917] kasan_save_alloc_info+0x40/0x58 [ 30.902953] __kasan_kmalloc+0xd4/0xd8 [ 30.902990] __kmalloc_cache_noprof+0x16c/0x3c0 [ 30.903029] kmalloc_big_oob_right+0xb8/0x2f0 [ 30.903066] kunit_try_run_case+0x170/0x3f0 [ 30.903103] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 30.903272] kthread+0x328/0x630 [ 30.903333] ret_from_fork+0x10/0x20 [ 30.903370] [ 30.903389] The buggy address belongs to the object at fff00000c6454000 [ 30.903389] which belongs to the cache kmalloc-8k of size 8192 [ 30.903467] The buggy address is located 0 bytes to the right of [ 30.903467] allocated 7936-byte region [fff00000c6454000, fff00000c6455f00) [ 30.903538] [ 30.903567] The buggy address belongs to the physical page: [ 30.903605] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106450 [ 30.903655] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 30.903700] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 30.903748] page_type: f5(slab) [ 30.903784] raw: 0bfffe0000000040 fff00000c0002280 dead000000000122 0000000000000000 [ 30.903840] raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 30.903888] head: 0bfffe0000000040 fff00000c0002280 dead000000000122 0000000000000000 [ 30.903935] head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 30.903981] head: 0bfffe0000000003 ffffc1ffc3191401 00000000ffffffff 00000000ffffffff [ 30.904027] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 [ 30.904064] page dumped because: kasan: bad access detected [ 30.904094] [ 30.904112] Memory state around the buggy address: [ 30.904152] fff00000c6455e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.904192] fff00000c6455e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.904244] >fff00000c6455f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.904279] ^ [ 30.904305] fff00000c6455f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.904344] fff00000c6456000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.904380] ==================================================================
[ 22.827742] ================================================================== [ 22.828561] BUG: KASAN: slab-out-of-bounds in kmalloc_big_oob_right+0x316/0x370 [ 22.829024] Write of size 1 at addr ffff888102c2df00 by task kunit_try_catch/192 [ 22.829399] [ 22.829496] CPU: 1 UID: 0 PID: 192 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5-next-20250708 #1 PREEMPT(voluntary) [ 22.829584] Tainted: [B]=BAD_PAGE, [N]=TEST [ 22.829597] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 22.829620] Call Trace: [ 22.829634] <TASK> [ 22.829661] dump_stack_lvl+0x73/0xb0 [ 22.829882] print_report+0xd1/0x610 [ 22.829921] ? __virt_addr_valid+0x1db/0x2d0 [ 22.829946] ? kmalloc_big_oob_right+0x316/0x370 [ 22.829969] ? kasan_complete_mode_report_info+0x2a/0x200 [ 22.829998] ? kmalloc_big_oob_right+0x316/0x370 [ 22.830020] kasan_report+0x141/0x180 [ 22.830043] ? kmalloc_big_oob_right+0x316/0x370 [ 22.830070] __asan_report_store1_noabort+0x1b/0x30 [ 22.830097] kmalloc_big_oob_right+0x316/0x370 [ 22.830120] ? __pfx_kmalloc_big_oob_right+0x10/0x10 [ 22.830143] ? __schedule+0x10cc/0x2b60 [ 22.830172] ? __pfx_read_tsc+0x10/0x10 [ 22.830225] ? ktime_get_ts64+0x86/0x230 [ 22.830263] kunit_try_run_case+0x1a5/0x480 [ 22.830286] ? __pfx_kunit_try_run_case+0x10/0x10 [ 22.830307] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 22.830329] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 22.830358] ? __kthread_parkme+0x82/0x180 [ 22.830379] ? preempt_count_sub+0x50/0x80 [ 22.830404] ? __pfx_kunit_try_run_case+0x10/0x10 [ 22.830425] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 22.830485] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 22.830512] kthread+0x337/0x6f0 [ 22.830558] ? trace_preempt_on+0x20/0xc0 [ 22.830583] ? __pfx_kthread+0x10/0x10 [ 22.830606] ? _raw_spin_unlock_irq+0x47/0x80 [ 22.830632] ? calculate_sigpending+0x7b/0xa0 [ 22.830659] ? __pfx_kthread+0x10/0x10 [ 22.830682] ret_from_fork+0x116/0x1d0 [ 22.830702] ? __pfx_kthread+0x10/0x10 [ 22.830724] ret_from_fork_asm+0x1a/0x30 [ 22.830758] </TASK> [ 22.830771] [ 22.841527] Allocated by task 192: [ 22.841998] kasan_save_stack+0x45/0x70 [ 22.842295] kasan_save_track+0x18/0x40 [ 22.842577] kasan_save_alloc_info+0x3b/0x50 [ 22.843152] __kasan_kmalloc+0xb7/0xc0 [ 22.843357] __kmalloc_cache_noprof+0x189/0x420 [ 22.843662] kmalloc_big_oob_right+0xa9/0x370 [ 22.844088] kunit_try_run_case+0x1a5/0x480 [ 22.844396] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 22.844731] kthread+0x337/0x6f0 [ 22.845127] ret_from_fork+0x116/0x1d0 [ 22.845345] ret_from_fork_asm+0x1a/0x30 [ 22.845694] [ 22.845872] The buggy address belongs to the object at ffff888102c2c000 [ 22.845872] which belongs to the cache kmalloc-8k of size 8192 [ 22.846415] The buggy address is located 0 bytes to the right of [ 22.846415] allocated 7936-byte region [ffff888102c2c000, ffff888102c2df00) [ 22.846887] [ 22.847004] The buggy address belongs to the physical page: [ 22.847314] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102c28 [ 22.847667] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 22.847974] flags: 0x200000000000040(head|node=0|zone=2) [ 22.848331] page_type: f5(slab) [ 22.848465] raw: 0200000000000040 ffff888100042280 dead000000000100 dead000000000122 [ 22.848926] raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 22.849284] head: 0200000000000040 ffff888100042280 dead000000000100 dead000000000122 [ 22.849632] head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 22.850045] head: 0200000000000003 ffffea00040b0a01 00000000ffffffff 00000000ffffffff [ 22.850318] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 [ 22.850672] page dumped because: kasan: bad access detected [ 22.850932] [ 22.851013] Memory state around the buggy address: [ 22.851317] ffff888102c2de00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 22.851598] ffff888102c2de80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 22.852092] >ffff888102c2df00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.852462] ^ [ 22.852646] ffff888102c2df80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.852914] ffff888102c2e000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.853523] ==================================================================