Date
July 23, 2025, 2:10 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 15.108731] ================================================================== [ 15.108796] BUG: KASAN: slab-out-of-bounds in kmalloc_big_oob_right+0x2a4/0x2f0 [ 15.108847] Write of size 1 at addr fff00000c651df00 by task kunit_try_catch/144 [ 15.109070] [ 15.109260] CPU: 1 UID: 0 PID: 144 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7 #1 PREEMPT [ 15.109359] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.109416] Hardware name: linux,dummy-virt (DT) [ 15.109465] Call trace: [ 15.109487] show_stack+0x20/0x38 (C) [ 15.109536] dump_stack_lvl+0x8c/0xd0 [ 15.109581] print_report+0x118/0x5d0 [ 15.109636] kasan_report+0xdc/0x128 [ 15.109682] __asan_report_store1_noabort+0x20/0x30 [ 15.109828] kmalloc_big_oob_right+0x2a4/0x2f0 [ 15.109889] kunit_try_run_case+0x170/0x3f0 [ 15.110108] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.110175] kthread+0x328/0x630 [ 15.110274] ret_from_fork+0x10/0x20 [ 15.110322] [ 15.110341] Allocated by task 144: [ 15.110369] kasan_save_stack+0x3c/0x68 [ 15.110521] kasan_save_track+0x20/0x40 [ 15.110831] kasan_save_alloc_info+0x40/0x58 [ 15.110941] __kasan_kmalloc+0xd4/0xd8 [ 15.111039] __kmalloc_cache_noprof+0x16c/0x3c0 [ 15.111126] kmalloc_big_oob_right+0xb8/0x2f0 [ 15.111168] kunit_try_run_case+0x170/0x3f0 [ 15.111206] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.111271] kthread+0x328/0x630 [ 15.111303] ret_from_fork+0x10/0x20 [ 15.111339] [ 15.111359] The buggy address belongs to the object at fff00000c651c000 [ 15.111359] which belongs to the cache kmalloc-8k of size 8192 [ 15.111422] The buggy address is located 0 bytes to the right of [ 15.111422] allocated 7936-byte region [fff00000c651c000, fff00000c651df00) [ 15.111488] [ 15.111508] The buggy address belongs to the physical page: [ 15.111540] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106518 [ 15.111814] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 15.111920] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 15.112003] page_type: f5(slab) [ 15.112070] raw: 0bfffe0000000040 fff00000c0002280 dead000000000122 0000000000000000 [ 15.112172] raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 15.112233] head: 0bfffe0000000040 fff00000c0002280 dead000000000122 0000000000000000 [ 15.112567] head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 15.112706] head: 0bfffe0000000003 ffffc1ffc3194601 00000000ffffffff 00000000ffffffff [ 15.112843] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 [ 15.113019] page dumped because: kasan: bad access detected [ 15.113117] [ 15.113176] Memory state around the buggy address: [ 15.113209] fff00000c651de00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 15.113277] fff00000c651de80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 15.113629] >fff00000c651df00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.113731] ^ [ 15.113823] fff00000c651df80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.113896] fff00000c651e000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.114098] ==================================================================
[ 12.155596] ================================================================== [ 12.156304] BUG: KASAN: slab-out-of-bounds in kmalloc_big_oob_right+0x316/0x370 [ 12.156759] Write of size 1 at addr ffff888102b8df00 by task kunit_try_catch/161 [ 12.157209] [ 12.157602] CPU: 1 UID: 0 PID: 161 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7 #1 PREEMPT(voluntary) [ 12.157651] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.157663] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.157684] Call Trace: [ 12.157697] <TASK> [ 12.157714] dump_stack_lvl+0x73/0xb0 [ 12.157746] print_report+0xd1/0x610 [ 12.157768] ? __virt_addr_valid+0x1db/0x2d0 [ 12.157792] ? kmalloc_big_oob_right+0x316/0x370 [ 12.157824] ? kasan_complete_mode_report_info+0x2a/0x200 [ 12.157846] ? kmalloc_big_oob_right+0x316/0x370 [ 12.157868] kasan_report+0x141/0x180 [ 12.157889] ? kmalloc_big_oob_right+0x316/0x370 [ 12.157915] __asan_report_store1_noabort+0x1b/0x30 [ 12.157938] kmalloc_big_oob_right+0x316/0x370 [ 12.157960] ? __pfx_kmalloc_big_oob_right+0x10/0x10 [ 12.157982] ? __schedule+0x10c6/0x2b60 [ 12.158005] ? __pfx_read_tsc+0x10/0x10 [ 12.158026] ? ktime_get_ts64+0x86/0x230 [ 12.158051] kunit_try_run_case+0x1a5/0x480 [ 12.158075] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.158210] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.158236] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.158259] ? __kthread_parkme+0x82/0x180 [ 12.158279] ? preempt_count_sub+0x50/0x80 [ 12.158303] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.158326] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.158349] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.158373] kthread+0x337/0x6f0 [ 12.158392] ? trace_preempt_on+0x20/0xc0 [ 12.158415] ? __pfx_kthread+0x10/0x10 [ 12.158435] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.158456] ? calculate_sigpending+0x7b/0xa0 [ 12.158480] ? __pfx_kthread+0x10/0x10 [ 12.158501] ret_from_fork+0x116/0x1d0 [ 12.158519] ? __pfx_kthread+0x10/0x10 [ 12.158539] ret_from_fork_asm+0x1a/0x30 [ 12.158568] </TASK> [ 12.158578] [ 12.168729] Allocated by task 161: [ 12.168913] kasan_save_stack+0x45/0x70 [ 12.169091] kasan_save_track+0x18/0x40 [ 12.169609] kasan_save_alloc_info+0x3b/0x50 [ 12.169897] __kasan_kmalloc+0xb7/0xc0 [ 12.170183] __kmalloc_cache_noprof+0x189/0x420 [ 12.170496] kmalloc_big_oob_right+0xa9/0x370 [ 12.170822] kunit_try_run_case+0x1a5/0x480 [ 12.171105] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.171442] kthread+0x337/0x6f0 [ 12.171590] ret_from_fork+0x116/0x1d0 [ 12.171926] ret_from_fork_asm+0x1a/0x30 [ 12.172278] [ 12.172483] The buggy address belongs to the object at ffff888102b8c000 [ 12.172483] which belongs to the cache kmalloc-8k of size 8192 [ 12.173040] The buggy address is located 0 bytes to the right of [ 12.173040] allocated 7936-byte region [ffff888102b8c000, ffff888102b8df00) [ 12.173617] [ 12.173718] The buggy address belongs to the physical page: [ 12.174015] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102b88 [ 12.174415] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 12.174789] flags: 0x200000000000040(head|node=0|zone=2) [ 12.175052] page_type: f5(slab) [ 12.175255] raw: 0200000000000040 ffff888100042280 dead000000000122 0000000000000000 [ 12.175603] raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 12.175984] head: 0200000000000040 ffff888100042280 dead000000000122 0000000000000000 [ 12.176367] head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 12.176718] head: 0200000000000003 ffffea00040ae201 00000000ffffffff 00000000ffffffff [ 12.177066] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 [ 12.177436] page dumped because: kasan: bad access detected [ 12.177718] [ 12.177821] Memory state around the buggy address: [ 12.178061] ffff888102b8de00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 12.178345] ffff888102b8de80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 12.178654] >ffff888102b8df00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.178978] ^ [ 12.179162] ffff888102b8df80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.179414] ffff888102b8e000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.179686] ==================================================================