Date
July 23, 2025, 3:10 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 30.427375] ================================================================== [ 30.427432] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_memset_4+0x150/0x300 [ 30.427494] Write of size 4 at addr fff00000c99bcb75 by task kunit_try_catch/207 [ 30.427541] [ 30.427575] CPU: 0 UID: 0 PID: 207 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7-next-20250723 #1 PREEMPT [ 30.427678] Tainted: [B]=BAD_PAGE, [N]=TEST [ 30.427705] Hardware name: linux,dummy-virt (DT) [ 30.427745] Call trace: [ 30.427768] show_stack+0x20/0x38 (C) [ 30.427816] dump_stack_lvl+0x8c/0xd0 [ 30.427871] print_report+0x118/0x5e8 [ 30.428784] kasan_report+0xdc/0x128 [ 30.428841] kasan_check_range+0x100/0x1a8 [ 30.428889] __asan_memset+0x34/0x78 [ 30.428942] kmalloc_oob_memset_4+0x150/0x300 [ 30.428988] kunit_try_run_case+0x170/0x3f0 [ 30.429659] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 30.429755] kthread+0x328/0x630 [ 30.429888] ret_from_fork+0x10/0x20 [ 30.429975] [ 30.430032] Allocated by task 207: [ 30.430213] kasan_save_stack+0x3c/0x68 [ 30.430426] kasan_save_track+0x20/0x40 [ 30.430508] kasan_save_alloc_info+0x40/0x58 [ 30.430682] __kasan_kmalloc+0xd4/0xd8 [ 30.430758] __kmalloc_cache_noprof+0x16c/0x3c0 [ 30.430820] kmalloc_oob_memset_4+0xb0/0x300 [ 30.431052] kunit_try_run_case+0x170/0x3f0 [ 30.431171] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 30.431329] kthread+0x328/0x630 [ 30.431493] ret_from_fork+0x10/0x20 [ 30.431574] [ 30.431692] The buggy address belongs to the object at fff00000c99bcb00 [ 30.431692] which belongs to the cache kmalloc-128 of size 128 [ 30.431770] The buggy address is located 117 bytes inside of [ 30.431770] allocated 120-byte region [fff00000c99bcb00, fff00000c99bcb78) [ 30.431871] [ 30.432111] The buggy address belongs to the physical page: [ 30.432725] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1099bc [ 30.433170] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 30.433245] page_type: f5(slab) [ 30.433319] raw: 0bfffe0000000000 fff00000c0001a00 dead000000000122 0000000000000000 [ 30.433395] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 30.433529] page dumped because: kasan: bad access detected [ 30.433833] [ 30.433995] Memory state around the buggy address: [ 30.434055] fff00000c99bca00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.434606] fff00000c99bca80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.434666] >fff00000c99bcb00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 30.434750] ^ [ 30.435038] fff00000c99bcb80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.435256] fff00000c99bcc00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.435490] ==================================================================
[ 25.262897] ================================================================== [ 25.263362] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_memset_4+0x166/0x330 [ 25.263911] Write of size 4 at addr ffff888104657d75 by task kunit_try_catch/223 [ 25.264219] [ 25.264308] CPU: 1 UID: 0 PID: 223 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7-next-20250723 #1 PREEMPT(voluntary) [ 25.264360] Tainted: [B]=BAD_PAGE, [N]=TEST [ 25.264373] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 25.264394] Call Trace: [ 25.264408] <TASK> [ 25.264438] dump_stack_lvl+0x73/0xb0 [ 25.264469] print_report+0xd1/0x640 [ 25.264492] ? __virt_addr_valid+0x1db/0x2d0 [ 25.264516] ? kmalloc_oob_memset_4+0x166/0x330 [ 25.264537] ? kasan_complete_mode_report_info+0x2a/0x200 [ 25.264563] ? kmalloc_oob_memset_4+0x166/0x330 [ 25.264584] kasan_report+0x141/0x180 [ 25.264606] ? kmalloc_oob_memset_4+0x166/0x330 [ 25.264632] kasan_check_range+0x10c/0x1c0 [ 25.264655] __asan_memset+0x27/0x50 [ 25.264679] kmalloc_oob_memset_4+0x166/0x330 [ 25.264701] ? __pfx_kmalloc_oob_memset_4+0x10/0x10 [ 25.264723] ? __schedule+0x10da/0x2b60 [ 25.264748] ? __pfx_read_tsc+0x10/0x10 [ 25.264770] ? ktime_get_ts64+0x86/0x230 [ 25.264795] kunit_try_run_case+0x1a5/0x480 [ 25.264821] ? __pfx_kunit_try_run_case+0x10/0x10 [ 25.264843] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 25.264867] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 25.264892] ? __kthread_parkme+0x82/0x180 [ 25.264912] ? preempt_count_sub+0x50/0x80 [ 25.264936] ? __pfx_kunit_try_run_case+0x10/0x10 [ 25.264978] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.265001] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 25.265024] kthread+0x337/0x6f0 [ 25.265044] ? trace_preempt_on+0x20/0xc0 [ 25.265069] ? __pfx_kthread+0x10/0x10 [ 25.265089] ? _raw_spin_unlock_irq+0x47/0x80 [ 25.265113] ? calculate_sigpending+0x7b/0xa0 [ 25.265136] ? __pfx_kthread+0x10/0x10 [ 25.265170] ret_from_fork+0x116/0x1d0 [ 25.265189] ? __pfx_kthread+0x10/0x10 [ 25.265209] ret_from_fork_asm+0x1a/0x30 [ 25.265241] </TASK> [ 25.265252] [ 25.272483] Allocated by task 223: [ 25.272626] kasan_save_stack+0x45/0x70 [ 25.272843] kasan_save_track+0x18/0x40 [ 25.273025] kasan_save_alloc_info+0x3b/0x50 [ 25.273321] __kasan_kmalloc+0xb7/0xc0 [ 25.273503] __kmalloc_cache_noprof+0x189/0x420 [ 25.273720] kmalloc_oob_memset_4+0xac/0x330 [ 25.273923] kunit_try_run_case+0x1a5/0x480 [ 25.274201] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.274437] kthread+0x337/0x6f0 [ 25.274616] ret_from_fork+0x116/0x1d0 [ 25.274802] ret_from_fork_asm+0x1a/0x30 [ 25.274964] [ 25.275052] The buggy address belongs to the object at ffff888104657d00 [ 25.275052] which belongs to the cache kmalloc-128 of size 128 [ 25.275719] The buggy address is located 117 bytes inside of [ 25.275719] allocated 120-byte region [ffff888104657d00, ffff888104657d78) [ 25.276530] [ 25.276621] The buggy address belongs to the physical page: [ 25.276857] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x104657 [ 25.277232] flags: 0x200000000000000(node=0|zone=2) [ 25.277517] page_type: f5(slab) [ 25.277680] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 25.277940] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 25.278171] page dumped because: kasan: bad access detected [ 25.278336] [ 25.278401] Memory state around the buggy address: [ 25.278552] ffff888104657c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 25.278850] ffff888104657c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.279163] >ffff888104657d00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 25.279876] ^ [ 25.280099] ffff888104657d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.280327] ffff888104657e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.280637] ==================================================================