Date
July 24, 2025, 4:41 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 32.525440] ================================================================== [ 32.525861] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_memset_2+0x150/0x2f8 [ 32.526016] Write of size 2 at addr fff00000c9a8b177 by task kunit_try_catch/203 [ 32.526126] [ 32.526185] CPU: 0 UID: 0 PID: 203 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7-next-20250724 #1 PREEMPT [ 32.526427] Tainted: [B]=BAD_PAGE, [N]=TEST [ 32.526462] Hardware name: linux,dummy-virt (DT) [ 32.526558] Call trace: [ 32.526718] show_stack+0x20/0x38 (C) [ 32.526805] dump_stack_lvl+0x8c/0xd0 [ 32.526854] print_report+0x118/0x5e8 [ 32.526897] kasan_report+0xdc/0x128 [ 32.527338] kasan_check_range+0x100/0x1a8 [ 32.527461] __asan_memset+0x34/0x78 [ 32.527618] kmalloc_oob_memset_2+0x150/0x2f8 [ 32.527673] kunit_try_run_case+0x170/0x3f0 [ 32.527721] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 32.527791] kthread+0x328/0x630 [ 32.528068] ret_from_fork+0x10/0x20 [ 32.528276] [ 32.528363] Allocated by task 203: [ 32.528412] kasan_save_stack+0x3c/0x68 [ 32.528473] kasan_save_track+0x20/0x40 [ 32.528660] kasan_save_alloc_info+0x40/0x58 [ 32.528806] __kasan_kmalloc+0xd4/0xd8 [ 32.528855] __kmalloc_cache_noprof+0x16c/0x3c0 [ 32.528895] kmalloc_oob_memset_2+0xb0/0x2f8 [ 32.528987] kunit_try_run_case+0x170/0x3f0 [ 32.529203] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 32.529435] kthread+0x328/0x630 [ 32.529618] ret_from_fork+0x10/0x20 [ 32.529788] [ 32.529858] The buggy address belongs to the object at fff00000c9a8b100 [ 32.529858] which belongs to the cache kmalloc-128 of size 128 [ 32.529937] The buggy address is located 119 bytes inside of [ 32.529937] allocated 120-byte region [fff00000c9a8b100, fff00000c9a8b178) [ 32.530202] [ 32.530230] The buggy address belongs to the physical page: [ 32.530270] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x109a8b [ 32.530347] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 32.530449] page_type: f5(slab) [ 32.530667] raw: 0bfffe0000000000 fff00000c0001a00 dead000000000122 0000000000000000 [ 32.530767] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 32.530859] page dumped because: kasan: bad access detected [ 32.530890] [ 32.530912] Memory state around the buggy address: [ 32.530952] fff00000c9a8b000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 32.531308] fff00000c9a8b080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.531420] >fff00000c9a8b100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 32.531576] ^ [ 32.531651] fff00000c9a8b180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.531718] fff00000c9a8b200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.531765] ==================================================================
[ 26.938961] ================================================================== [ 26.939667] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_memset_2+0x166/0x330 [ 26.940378] Write of size 2 at addr ffff888105454777 by task kunit_try_catch/220 [ 26.940695] [ 26.940804] CPU: 0 UID: 0 PID: 220 Comm: kunit_try_catch Tainted: G B W N 6.16.0-rc7-next-20250724 #1 PREEMPT(voluntary) [ 26.940858] Tainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST [ 26.940872] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 26.940894] Call Trace: [ 26.940907] <TASK> [ 26.941327] dump_stack_lvl+0x73/0xb0 [ 26.941370] print_report+0xd1/0x640 [ 26.941410] ? __virt_addr_valid+0x1db/0x2d0 [ 26.941436] ? kmalloc_oob_memset_2+0x166/0x330 [ 26.941674] ? kasan_complete_mode_report_info+0x2a/0x200 [ 26.941708] ? kmalloc_oob_memset_2+0x166/0x330 [ 26.941847] kasan_report+0x141/0x180 [ 26.941886] ? kmalloc_oob_memset_2+0x166/0x330 [ 26.941926] kasan_check_range+0x10c/0x1c0 [ 26.942034] __asan_memset+0x27/0x50 [ 26.942074] kmalloc_oob_memset_2+0x166/0x330 [ 26.942097] ? __pfx_kmalloc_oob_memset_2+0x10/0x10 [ 26.942119] ? __schedule+0x10da/0x2b60 [ 26.942145] ? __pfx_read_tsc+0x10/0x10 [ 26.942167] ? ktime_get_ts64+0x86/0x230 [ 26.942191] kunit_try_run_case+0x1a5/0x480 [ 26.942218] ? __pfx_kunit_try_run_case+0x10/0x10 [ 26.942239] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 26.942264] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 26.942289] ? __kthread_parkme+0x82/0x180 [ 26.942309] ? preempt_count_sub+0x50/0x80 [ 26.942333] ? __pfx_kunit_try_run_case+0x10/0x10 [ 26.942356] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.942378] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 26.942401] kthread+0x337/0x6f0 [ 26.942421] ? trace_preempt_on+0x20/0xc0 [ 26.942445] ? __pfx_kthread+0x10/0x10 [ 26.942465] ? _raw_spin_unlock_irq+0x47/0x80 [ 26.942488] ? calculate_sigpending+0x7b/0xa0 [ 26.942511] ? __pfx_kthread+0x10/0x10 [ 26.942532] ret_from_fork+0x116/0x1d0 [ 26.942550] ? __pfx_kthread+0x10/0x10 [ 26.942570] ret_from_fork_asm+0x1a/0x30 [ 26.942611] </TASK> [ 26.942622] [ 26.950399] Allocated by task 220: [ 26.950563] kasan_save_stack+0x45/0x70 [ 26.950781] kasan_save_track+0x18/0x40 [ 26.951022] kasan_save_alloc_info+0x3b/0x50 [ 26.951226] __kasan_kmalloc+0xb7/0xc0 [ 26.951418] __kmalloc_cache_noprof+0x189/0x420 [ 26.951619] kmalloc_oob_memset_2+0xac/0x330 [ 26.951760] kunit_try_run_case+0x1a5/0x480 [ 26.951898] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.952105] kthread+0x337/0x6f0 [ 26.952277] ret_from_fork+0x116/0x1d0 [ 26.952455] ret_from_fork_asm+0x1a/0x30 [ 26.952655] [ 26.952742] The buggy address belongs to the object at ffff888105454700 [ 26.952742] which belongs to the cache kmalloc-128 of size 128 [ 26.953298] The buggy address is located 119 bytes inside of [ 26.953298] allocated 120-byte region [ffff888105454700, ffff888105454778) [ 26.953854] [ 26.953947] The buggy address belongs to the physical page: [ 26.954346] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105454 [ 26.954680] flags: 0x200000000000000(node=0|zone=2) [ 26.955103] page_type: f5(slab) [ 26.955275] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 26.955640] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 26.956020] page dumped because: kasan: bad access detected [ 26.956317] [ 26.956419] Memory state around the buggy address: [ 26.956602] ffff888105454600: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.956924] ffff888105454680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.957263] >ffff888105454700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 26.957549] ^ [ 26.957906] ffff888105454780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.958200] ffff888105454800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.958651] ==================================================================