Date
July 17, 2025, 11:10 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 17.824546] ================================================================== [ 17.824608] BUG: KASAN: slab-out-of-bounds in memcmp+0x198/0x1d8 [ 17.824664] Read of size 1 at addr fff00000c7940c18 by task kunit_try_catch/258 [ 17.824735] [ 17.824804] CPU: 0 UID: 0 PID: 258 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 17.824916] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.824946] Hardware name: linux,dummy-virt (DT) [ 17.825006] Call trace: [ 17.825221] show_stack+0x20/0x38 (C) [ 17.825342] dump_stack_lvl+0x8c/0xd0 [ 17.825439] print_report+0x118/0x5d0 [ 17.825590] kasan_report+0xdc/0x128 [ 17.825724] __asan_report_load1_noabort+0x20/0x30 [ 17.825820] memcmp+0x198/0x1d8 [ 17.825865] kasan_memcmp+0x16c/0x300 [ 17.825936] kunit_try_run_case+0x170/0x3f0 [ 17.825998] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.826054] kthread+0x328/0x630 [ 17.826193] ret_from_fork+0x10/0x20 [ 17.826251] [ 17.826324] Allocated by task 258: [ 17.826382] kasan_save_stack+0x3c/0x68 [ 17.826443] kasan_save_track+0x20/0x40 [ 17.826534] kasan_save_alloc_info+0x40/0x58 [ 17.826611] __kasan_kmalloc+0xd4/0xd8 [ 17.826736] __kmalloc_cache_noprof+0x16c/0x3c0 [ 17.826848] kasan_memcmp+0xbc/0x300 [ 17.826928] kunit_try_run_case+0x170/0x3f0 [ 17.827045] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.827102] kthread+0x328/0x630 [ 17.827137] ret_from_fork+0x10/0x20 [ 17.827296] [ 17.827318] The buggy address belongs to the object at fff00000c7940c00 [ 17.827318] which belongs to the cache kmalloc-32 of size 32 [ 17.827475] The buggy address is located 0 bytes to the right of [ 17.827475] allocated 24-byte region [fff00000c7940c00, fff00000c7940c18) [ 17.827550] [ 17.827572] The buggy address belongs to the physical page: [ 17.827606] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107940 [ 17.827660] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 17.827731] page_type: f5(slab) [ 17.827921] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 17.828014] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 17.828116] page dumped because: kasan: bad access detected [ 17.828169] [ 17.828189] Memory state around the buggy address: [ 17.828250] fff00000c7940b00: 00 00 00 fc fc fc fc fc 00 00 00 04 fc fc fc fc [ 17.828345] fff00000c7940b80: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 17.828392] >fff00000c7940c00: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.828474] ^ [ 17.828507] fff00000c7940c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.828801] fff00000c7940d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.828861] ==================================================================
[ 14.947617] ================================================================== [ 14.948717] BUG: KASAN: slab-out-of-bounds in memcmp+0x1b4/0x1d0 [ 14.949282] Read of size 1 at addr ffff8881039b2c98 by task kunit_try_catch/274 [ 14.950011] [ 14.950186] CPU: 0 UID: 0 PID: 274 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 14.950230] Tainted: [B]=BAD_PAGE, [N]=TEST [ 14.950242] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 14.950271] Call Trace: [ 14.950284] <TASK> [ 14.950299] dump_stack_lvl+0x73/0xb0 [ 14.950327] print_report+0xd1/0x610 [ 14.950352] ? __virt_addr_valid+0x1db/0x2d0 [ 14.950376] ? memcmp+0x1b4/0x1d0 [ 14.950393] ? kasan_complete_mode_report_info+0x2a/0x200 [ 14.950417] ? memcmp+0x1b4/0x1d0 [ 14.950435] kasan_report+0x141/0x180 [ 14.950456] ? memcmp+0x1b4/0x1d0 [ 14.950478] __asan_report_load1_noabort+0x18/0x20 [ 14.950544] memcmp+0x1b4/0x1d0 [ 14.950573] kasan_memcmp+0x18f/0x390 [ 14.950595] ? trace_hardirqs_on+0x37/0xe0 [ 14.950619] ? __pfx_kasan_memcmp+0x10/0x10 [ 14.950639] ? finish_task_switch.isra.0+0x153/0x700 [ 14.950662] ? __switch_to+0x47/0xf50 [ 14.950691] ? __pfx_read_tsc+0x10/0x10 [ 14.950712] ? ktime_get_ts64+0x86/0x230 [ 14.950735] kunit_try_run_case+0x1a5/0x480 [ 14.950761] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.950784] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 14.950808] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 14.950832] ? __kthread_parkme+0x82/0x180 [ 14.950853] ? preempt_count_sub+0x50/0x80 [ 14.950876] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.950900] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.950926] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 14.950952] kthread+0x337/0x6f0 [ 14.950972] ? trace_preempt_on+0x20/0xc0 [ 14.950994] ? __pfx_kthread+0x10/0x10 [ 14.951015] ? _raw_spin_unlock_irq+0x47/0x80 [ 14.951037] ? calculate_sigpending+0x7b/0xa0 [ 14.951062] ? __pfx_kthread+0x10/0x10 [ 14.951083] ret_from_fork+0x116/0x1d0 [ 14.951102] ? __pfx_kthread+0x10/0x10 [ 14.951123] ret_from_fork_asm+0x1a/0x30 [ 14.951154] </TASK> [ 14.951165] [ 14.962236] Allocated by task 274: [ 14.962562] kasan_save_stack+0x45/0x70 [ 14.962995] kasan_save_track+0x18/0x40 [ 14.963401] kasan_save_alloc_info+0x3b/0x50 [ 14.963849] __kasan_kmalloc+0xb7/0xc0 [ 14.964262] __kmalloc_cache_noprof+0x189/0x420 [ 14.964705] kasan_memcmp+0xb7/0x390 [ 14.965038] kunit_try_run_case+0x1a5/0x480 [ 14.965478] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.965974] kthread+0x337/0x6f0 [ 14.966265] ret_from_fork+0x116/0x1d0 [ 14.966731] ret_from_fork_asm+0x1a/0x30 [ 14.966954] [ 14.967119] The buggy address belongs to the object at ffff8881039b2c80 [ 14.967119] which belongs to the cache kmalloc-32 of size 32 [ 14.967996] The buggy address is located 0 bytes to the right of [ 14.967996] allocated 24-byte region [ffff8881039b2c80, ffff8881039b2c98) [ 14.969134] [ 14.969218] The buggy address belongs to the physical page: [ 14.969642] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1039b2 [ 14.969896] flags: 0x200000000000000(node=0|zone=2) [ 14.970061] page_type: f5(slab) [ 14.970185] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 14.970433] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 14.971124] page dumped because: kasan: bad access detected [ 14.971726] [ 14.971902] Memory state around the buggy address: [ 14.972401] ffff8881039b2b80: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 14.973144] ffff8881039b2c00: 00 00 00 04 fc fc fc fc 00 00 07 fc fc fc fc fc [ 14.973856] >ffff8881039b2c80: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc [ 14.974674] ^ [ 14.975110] ffff8881039b2d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 14.975815] ffff8881039b2d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 14.976534] ==================================================================