Date
July 22, 2025, 2:40 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 17.261567] ================================================================== [ 17.261800] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_memset_8+0x150/0x2f8 [ 17.262140] Write of size 8 at addr fff00000c6fb0671 by task kunit_try_catch/178 [ 17.262212] [ 17.262580] CPU: 0 UID: 0 PID: 178 Comm: kunit_try_catch Tainted: G B N 6.15.8-rc1 #1 PREEMPT [ 17.262694] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.262996] Hardware name: linux,dummy-virt (DT) [ 17.263413] Call trace: [ 17.263489] show_stack+0x20/0x38 (C) [ 17.263646] dump_stack_lvl+0x8c/0xd0 [ 17.263734] print_report+0x118/0x5d0 [ 17.263838] kasan_report+0xdc/0x128 [ 17.263938] kasan_check_range+0x100/0x1a8 [ 17.264058] __asan_memset+0x34/0x78 [ 17.264125] kmalloc_oob_memset_8+0x150/0x2f8 [ 17.264244] kunit_try_run_case+0x170/0x3f0 [ 17.264351] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.264473] kthread+0x328/0x630 [ 17.264542] ret_from_fork+0x10/0x20 [ 17.264970] [ 17.265051] Allocated by task 178: [ 17.265434] kasan_save_stack+0x3c/0x68 [ 17.265523] kasan_save_track+0x20/0x40 [ 17.265686] kasan_save_alloc_info+0x40/0x58 [ 17.265870] __kasan_kmalloc+0xd4/0xd8 [ 17.266096] __kmalloc_cache_noprof+0x16c/0x3c0 [ 17.266333] kmalloc_oob_memset_8+0xb0/0x2f8 [ 17.266759] kunit_try_run_case+0x170/0x3f0 [ 17.266906] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.267108] kthread+0x328/0x630 [ 17.267324] ret_from_fork+0x10/0x20 [ 17.267399] [ 17.267483] The buggy address belongs to the object at fff00000c6fb0600 [ 17.267483] which belongs to the cache kmalloc-128 of size 128 [ 17.267570] The buggy address is located 113 bytes inside of [ 17.267570] allocated 120-byte region [fff00000c6fb0600, fff00000c6fb0678) [ 17.267755] [ 17.267824] The buggy address belongs to the physical page: [ 17.267909] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106fb0 [ 17.268087] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 17.268185] page_type: f5(slab) [ 17.268645] raw: 0bfffe0000000000 fff00000c0001a00 dead000000000122 0000000000000000 [ 17.268748] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 17.268963] page dumped because: kasan: bad access detected [ 17.269110] [ 17.269238] Memory state around the buggy address: [ 17.269360] fff00000c6fb0500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 17.269417] fff00000c6fb0580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.269492] >fff00000c6fb0600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 17.269686] ^ [ 17.270118] fff00000c6fb0680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.270330] fff00000c6fb0700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.270416] ==================================================================
[ 11.225726] ================================================================== [ 11.226203] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_memset_8+0x166/0x330 [ 11.226539] Write of size 8 at addr ffff88810306aa71 by task kunit_try_catch/196 [ 11.227074] [ 11.227188] CPU: 0 UID: 0 PID: 196 Comm: kunit_try_catch Tainted: G B N 6.15.8-rc1 #1 PREEMPT(voluntary) [ 11.227245] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.227256] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.227277] Call Trace: [ 11.227290] <TASK> [ 11.227330] dump_stack_lvl+0x73/0xb0 [ 11.227356] print_report+0xd1/0x610 [ 11.227379] ? __virt_addr_valid+0x1db/0x2d0 [ 11.227400] ? kmalloc_oob_memset_8+0x166/0x330 [ 11.227421] ? kasan_complete_mode_report_info+0x2a/0x200 [ 11.227452] ? kmalloc_oob_memset_8+0x166/0x330 [ 11.227473] kasan_report+0x141/0x180 [ 11.227496] ? kmalloc_oob_memset_8+0x166/0x330 [ 11.227522] kasan_check_range+0x10c/0x1c0 [ 11.227542] __asan_memset+0x27/0x50 [ 11.227582] kmalloc_oob_memset_8+0x166/0x330 [ 11.227604] ? __pfx_kmalloc_oob_memset_8+0x10/0x10 [ 11.227627] ? __schedule+0x10c6/0x2b60 [ 11.227650] ? __pfx_read_tsc+0x10/0x10 [ 11.227670] ? ktime_get_ts64+0x86/0x230 [ 11.227695] kunit_try_run_case+0x1a5/0x480 [ 11.227715] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.227744] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.227766] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.227789] ? __kthread_parkme+0x82/0x180 [ 11.227810] ? preempt_count_sub+0x50/0x80 [ 11.227856] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.227876] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.227899] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.227922] kthread+0x337/0x6f0 [ 11.227938] ? trace_preempt_on+0x20/0xc0 [ 11.227961] ? __pfx_kthread+0x10/0x10 [ 11.227978] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.228000] ? calculate_sigpending+0x7b/0xa0 [ 11.228021] ? __pfx_kthread+0x10/0x10 [ 11.228057] ret_from_fork+0x41/0x80 [ 11.228077] ? __pfx_kthread+0x10/0x10 [ 11.228094] ret_from_fork_asm+0x1a/0x30 [ 11.228125] </TASK> [ 11.228135] [ 11.235914] Allocated by task 196: [ 11.236183] kasan_save_stack+0x45/0x70 [ 11.236385] kasan_save_track+0x18/0x40 [ 11.236570] kasan_save_alloc_info+0x3b/0x50 [ 11.236744] __kasan_kmalloc+0xb7/0xc0 [ 11.236875] __kmalloc_cache_noprof+0x189/0x420 [ 11.237032] kmalloc_oob_memset_8+0xac/0x330 [ 11.237337] kunit_try_run_case+0x1a5/0x480 [ 11.237615] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.237997] kthread+0x337/0x6f0 [ 11.238114] ret_from_fork+0x41/0x80 [ 11.238253] ret_from_fork_asm+0x1a/0x30 [ 11.238389] [ 11.238457] The buggy address belongs to the object at ffff88810306aa00 [ 11.238457] which belongs to the cache kmalloc-128 of size 128 [ 11.239468] The buggy address is located 113 bytes inside of [ 11.239468] allocated 120-byte region [ffff88810306aa00, ffff88810306aa78) [ 11.240046] [ 11.240117] The buggy address belongs to the physical page: [ 11.240399] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10306a [ 11.240811] flags: 0x200000000000000(node=0|zone=2) [ 11.241001] page_type: f5(slab) [ 11.241219] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 11.241782] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 11.242011] page dumped because: kasan: bad access detected [ 11.242181] [ 11.242266] Memory state around the buggy address: [ 11.242511] ffff88810306a900: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 11.242824] ffff88810306a980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.243932] >ffff88810306aa00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 11.244809] ^ [ 11.245049] ffff88810306aa80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.245336] ffff88810306ab00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.246050] ==================================================================