Date
July 15, 2025, 2:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 17.905096] ================================================================== [ 17.905171] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_memset_2+0x150/0x2f8 [ 17.905240] Write of size 2 at addr fff00000c47f9f77 by task kunit_try_catch/174 [ 17.905431] [ 17.905947] CPU: 0 UID: 0 PID: 174 Comm: kunit_try_catch Tainted: G B N 6.15.7-rc1 #1 PREEMPT [ 17.906135] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.906165] Hardware name: linux,dummy-virt (DT) [ 17.906239] Call trace: [ 17.906428] show_stack+0x20/0x38 (C) [ 17.906642] dump_stack_lvl+0x8c/0xd0 [ 17.906859] print_report+0x118/0x5d0 [ 17.907003] kasan_report+0xdc/0x128 [ 17.907144] kasan_check_range+0x100/0x1a8 [ 17.907260] __asan_memset+0x34/0x78 [ 17.907329] kmalloc_oob_memset_2+0x150/0x2f8 [ 17.907588] kunit_try_run_case+0x170/0x3f0 [ 17.907923] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.908226] kthread+0x328/0x630 [ 17.908470] ret_from_fork+0x10/0x20 [ 17.908757] [ 17.908818] Allocated by task 174: [ 17.908868] kasan_save_stack+0x3c/0x68 [ 17.909037] kasan_save_track+0x20/0x40 [ 17.909288] kasan_save_alloc_info+0x40/0x58 [ 17.909338] __kasan_kmalloc+0xd4/0xd8 [ 17.909508] __kmalloc_cache_noprof+0x16c/0x3c0 [ 17.909603] kmalloc_oob_memset_2+0xb0/0x2f8 [ 17.909771] kunit_try_run_case+0x170/0x3f0 [ 17.909923] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.910031] kthread+0x328/0x630 [ 17.910369] ret_from_fork+0x10/0x20 [ 17.910494] [ 17.910563] The buggy address belongs to the object at fff00000c47f9f00 [ 17.910563] which belongs to the cache kmalloc-128 of size 128 [ 17.910733] The buggy address is located 119 bytes inside of [ 17.910733] allocated 120-byte region [fff00000c47f9f00, fff00000c47f9f78) [ 17.910830] [ 17.911050] The buggy address belongs to the physical page: [ 17.911305] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1047f9 [ 17.911400] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 17.911720] page_type: f5(slab) [ 17.911769] raw: 0bfffe0000000000 fff00000c0001a00 dead000000000122 0000000000000000 [ 17.911981] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 17.912447] page dumped because: kasan: bad access detected [ 17.912666] [ 17.912909] Memory state around the buggy address: [ 17.912970] fff00000c47f9e00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 17.913369] fff00000c47f9e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.913522] >fff00000c47f9f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 17.913563] ^ [ 17.913607] fff00000c47f9f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.913694] fff00000c47fa000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 17.913744] ==================================================================
[ 11.074848] ================================================================== [ 11.075351] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_memset_2+0x166/0x330 [ 11.075587] Write of size 2 at addr ffff888102f2ab77 by task kunit_try_catch/191 [ 11.076702] [ 11.077133] CPU: 1 UID: 0 PID: 191 Comm: kunit_try_catch Tainted: G B N 6.15.7-rc1 #1 PREEMPT(voluntary) [ 11.077190] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.077201] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.077221] Call Trace: [ 11.077233] <TASK> [ 11.077247] dump_stack_lvl+0x73/0xb0 [ 11.077273] print_report+0xd1/0x610 [ 11.077295] ? __virt_addr_valid+0x1db/0x2d0 [ 11.077315] ? kmalloc_oob_memset_2+0x166/0x330 [ 11.077336] ? kasan_complete_mode_report_info+0x2a/0x200 [ 11.077357] ? kmalloc_oob_memset_2+0x166/0x330 [ 11.077379] kasan_report+0x141/0x180 [ 11.077400] ? kmalloc_oob_memset_2+0x166/0x330 [ 11.077426] kasan_check_range+0x10c/0x1c0 [ 11.077445] __asan_memset+0x27/0x50 [ 11.077464] kmalloc_oob_memset_2+0x166/0x330 [ 11.077487] ? __pfx_kmalloc_oob_memset_2+0x10/0x10 [ 11.077509] ? __schedule+0x10cc/0x2b60 [ 11.077532] ? __pfx_read_tsc+0x10/0x10 [ 11.077550] ? ktime_get_ts64+0x86/0x230 [ 11.077574] kunit_try_run_case+0x1a5/0x480 [ 11.077594] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.077611] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.077635] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.077657] ? __kthread_parkme+0x82/0x180 [ 11.077678] ? preempt_count_sub+0x50/0x80 [ 11.077702] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.077721] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.077743] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.077766] kthread+0x337/0x6f0 [ 11.077959] ? trace_preempt_on+0x20/0xc0 [ 11.077987] ? __pfx_kthread+0x10/0x10 [ 11.078005] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.078027] ? calculate_sigpending+0x7b/0xa0 [ 11.078048] ? __pfx_kthread+0x10/0x10 [ 11.078102] ret_from_fork+0x41/0x80 [ 11.078122] ? __pfx_kthread+0x10/0x10 [ 11.078139] ret_from_fork_asm+0x1a/0x30 [ 11.078169] </TASK> [ 11.078179] [ 11.092973] Allocated by task 191: [ 11.093398] kasan_save_stack+0x45/0x70 [ 11.093920] kasan_save_track+0x18/0x40 [ 11.094064] kasan_save_alloc_info+0x3b/0x50 [ 11.094209] __kasan_kmalloc+0xb7/0xc0 [ 11.094339] __kmalloc_cache_noprof+0x189/0x420 [ 11.094488] kmalloc_oob_memset_2+0xac/0x330 [ 11.094633] kunit_try_run_case+0x1a5/0x480 [ 11.094794] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.094977] kthread+0x337/0x6f0 [ 11.095216] ret_from_fork+0x41/0x80 [ 11.095345] ret_from_fork_asm+0x1a/0x30 [ 11.095480] [ 11.095657] The buggy address belongs to the object at ffff888102f2ab00 [ 11.095657] which belongs to the cache kmalloc-128 of size 128 [ 11.096857] The buggy address is located 119 bytes inside of [ 11.096857] allocated 120-byte region [ffff888102f2ab00, ffff888102f2ab78) [ 11.097641] [ 11.097828] The buggy address belongs to the physical page: [ 11.098565] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102f2a [ 11.099183] flags: 0x200000000000000(node=0|zone=2) [ 11.099351] page_type: f5(slab) [ 11.099472] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 11.099704] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 11.099940] page dumped because: kasan: bad access detected [ 11.100279] [ 11.100376] Memory state around the buggy address: [ 11.100577] ffff888102f2aa00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 11.100923] ffff888102f2aa80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.101242] >ffff888102f2ab00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 11.101563] ^ [ 11.102074] ffff888102f2ab80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.102369] ffff888102f2ac00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.102654] ==================================================================