Date
July 17, 2025, 11:11 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.925108] ================================================================== [ 18.925177] BUG: KASAN: slab-out-of-bounds in memcmp+0x198/0x1d8 [ 18.925239] Read of size 1 at addr fff00000c78e3fd8 by task kunit_try_catch/257 [ 18.925600] [ 18.925899] CPU: 0 UID: 0 PID: 257 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 18.926613] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.926652] Hardware name: linux,dummy-virt (DT) [ 18.926686] Call trace: [ 18.926937] show_stack+0x20/0x38 (C) [ 18.927304] dump_stack_lvl+0x8c/0xd0 [ 18.927563] print_report+0x118/0x5d0 [ 18.927886] kasan_report+0xdc/0x128 [ 18.928289] __asan_report_load1_noabort+0x20/0x30 [ 18.928465] memcmp+0x198/0x1d8 [ 18.928510] kasan_memcmp+0x16c/0x300 [ 18.928691] kunit_try_run_case+0x170/0x3f0 [ 18.928749] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.928805] kthread+0x328/0x630 [ 18.928850] ret_from_fork+0x10/0x20 [ 18.928915] [ 18.928938] Allocated by task 257: [ 18.928997] kasan_save_stack+0x3c/0x68 [ 18.929109] kasan_save_track+0x20/0x40 [ 18.929186] kasan_save_alloc_info+0x40/0x58 [ 18.929292] __kasan_kmalloc+0xd4/0xd8 [ 18.929363] __kmalloc_cache_noprof+0x16c/0x3c0 [ 18.929415] kasan_memcmp+0xbc/0x300 [ 18.929474] kunit_try_run_case+0x170/0x3f0 [ 18.929617] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.929714] kthread+0x328/0x630 [ 18.929768] ret_from_fork+0x10/0x20 [ 18.929911] [ 18.929978] The buggy address belongs to the object at fff00000c78e3fc0 [ 18.929978] which belongs to the cache kmalloc-32 of size 32 [ 18.930046] The buggy address is located 0 bytes to the right of [ 18.930046] allocated 24-byte region [fff00000c78e3fc0, fff00000c78e3fd8) [ 18.930246] [ 18.930299] The buggy address belongs to the physical page: [ 18.931279] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1078e3 [ 18.931342] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.931395] page_type: f5(slab) [ 18.931438] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 18.931494] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 18.931536] page dumped because: kasan: bad access detected [ 18.931571] [ 18.931590] Memory state around the buggy address: [ 18.931624] fff00000c78e3e80: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 18.952775] fff00000c79fa100: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 18.960088] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.962801] strlen+0xa8/0xb0 [ 18.964858] The buggy address is located 16 bytes inside of [ 18.964858] freed 32-byte region [fff00000c79fa180, fff00000c79fa1a0) [ 18.966242] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.966936] kasan_save_stack+0x3c/0x68 [ 18.967307] ret_from_fork+0x10/0x20 [ 18.967546] kfree+0x214/0x3c8 [ 18.967698] kthread+0x328/0x630 [ 18.969419] [ 18.971485] page dumped because: kasan: bad access detected [ 18.971833] ==================================================================
[ 14.214461] ================================================================== [ 14.215212] BUG: KASAN: slab-out-of-bounds in memcmp+0x1b4/0x1d0 [ 14.215515] Read of size 1 at addr ffff8881026c3cd8 by task kunit_try_catch/274 [ 14.215866] [ 14.215999] CPU: 1 UID: 0 PID: 274 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 14.216059] Tainted: [B]=BAD_PAGE, [N]=TEST [ 14.216071] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 14.216094] Call Trace: [ 14.216107] <TASK> [ 14.216126] dump_stack_lvl+0x73/0xb0 [ 14.216153] print_report+0xd1/0x610 [ 14.216180] ? __virt_addr_valid+0x1db/0x2d0 [ 14.216205] ? memcmp+0x1b4/0x1d0 [ 14.216222] ? kasan_complete_mode_report_info+0x2a/0x200 [ 14.216245] ? memcmp+0x1b4/0x1d0 [ 14.216262] kasan_report+0x141/0x180 [ 14.216284] ? memcmp+0x1b4/0x1d0 [ 14.216307] __asan_report_load1_noabort+0x18/0x20 [ 14.216331] memcmp+0x1b4/0x1d0 [ 14.216351] kasan_memcmp+0x18f/0x390 [ 14.216370] ? trace_hardirqs_on+0x37/0xe0 [ 14.216395] ? __pfx_kasan_memcmp+0x10/0x10 [ 14.216414] ? finish_task_switch.isra.0+0x153/0x700 [ 14.216439] ? __switch_to+0x47/0xf50 [ 14.216469] ? __pfx_read_tsc+0x10/0x10 [ 14.216493] ? ktime_get_ts64+0x86/0x230 [ 14.216519] kunit_try_run_case+0x1a5/0x480 [ 14.216546] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.216569] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 14.216593] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 14.216617] ? __kthread_parkme+0x82/0x180 [ 14.216637] ? preempt_count_sub+0x50/0x80 [ 14.216661] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.216685] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.216708] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 14.216732] kthread+0x337/0x6f0 [ 14.216750] ? trace_preempt_on+0x20/0xc0 [ 14.216771] ? __pfx_kthread+0x10/0x10 [ 14.216790] ? _raw_spin_unlock_irq+0x47/0x80 [ 14.216811] ? calculate_sigpending+0x7b/0xa0 [ 14.216836] ? __pfx_kthread+0x10/0x10 [ 14.216857] ret_from_fork+0x116/0x1d0 [ 14.216875] ? __pfx_kthread+0x10/0x10 [ 14.216894] ret_from_fork_asm+0x1a/0x30 [ 14.216928] </TASK> [ 14.216937] [ 14.224795] Allocated by task 274: [ 14.224986] kasan_save_stack+0x45/0x70 [ 14.225389] kasan_save_track+0x18/0x40 [ 14.225601] kasan_save_alloc_info+0x3b/0x50 [ 14.225751] __kasan_kmalloc+0xb7/0xc0 [ 14.225883] __kmalloc_cache_noprof+0x189/0x420 [ 14.226188] kasan_memcmp+0xb7/0x390 [ 14.226375] kunit_try_run_case+0x1a5/0x480 [ 14.226582] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.227007] kthread+0x337/0x6f0 [ 14.227180] ret_from_fork+0x116/0x1d0 [ 14.227316] ret_from_fork_asm+0x1a/0x30 [ 14.227457] [ 14.227548] The buggy address belongs to the object at ffff8881026c3cc0 [ 14.227548] which belongs to the cache kmalloc-32 of size 32 [ 14.228198] The buggy address is located 0 bytes to the right of [ 14.228198] allocated 24-byte region [ffff8881026c3cc0, ffff8881026c3cd8) [ 14.228842] [ 14.228922] The buggy address belongs to the physical page: [ 14.229249] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1026c3 [ 14.229627] flags: 0x200000000000000(node=0|zone=2) [ 14.229873] page_type: f5(slab) [ 14.230132] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 14.230457] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 14.232022] page dumped because: kasan: bad access detected [ 14.232280] [ 14.232361] Memory state around the buggy address: [ 14.232572] ffff8881026c3b80: fa fb fb fb fc fc fc fc 00 00 07 fc fc fc fc fc [ 14.233120] ffff8881026c3c00: 00 00 00 fc fc fc fc fc 00 00 00 04 fc fc fc fc [ 14.233414] >ffff8881026c3c80: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 14.233902] ^ [ 14.234272] ffff8881026c3d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 14.234580] ffff8881026c3d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 14.235027] ==================================================================