Date
July 5, 2025, 11:09 a.m.
Environment | |
---|---|
qemu-arm64 | |
qemu-x86_64 |
[ 19.152155] ================================================================== [ 19.152338] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x170/0x310 [ 19.152574] Write of size 33 at addr fff00000c78aa700 by task kunit_try_catch/187 [ 19.152692] [ 19.152764] CPU: 0 UID: 0 PID: 187 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 19.152927] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.153133] Hardware name: linux,dummy-virt (DT) [ 19.153200] Call trace: [ 19.153248] show_stack+0x20/0x38 (C) [ 19.153370] dump_stack_lvl+0x8c/0xd0 [ 19.153482] print_report+0x118/0x608 [ 19.153581] kasan_report+0xdc/0x128 [ 19.153682] kasan_check_range+0x100/0x1a8 [ 19.153782] __asan_memset+0x34/0x78 [ 19.153875] kmalloc_uaf_memset+0x170/0x310 [ 19.153980] kunit_try_run_case+0x170/0x3f0 [ 19.154072] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.154268] kthread+0x328/0x630 [ 19.154384] ret_from_fork+0x10/0x20 [ 19.154519] [ 19.154560] Allocated by task 187: [ 19.154672] kasan_save_stack+0x3c/0x68 [ 19.155382] kasan_save_track+0x20/0x40 [ 19.155537] kasan_save_alloc_info+0x40/0x58 [ 19.155638] __kasan_kmalloc+0xd4/0xd8 [ 19.155720] __kmalloc_cache_noprof+0x16c/0x3c0 [ 19.155810] kmalloc_uaf_memset+0xb8/0x310 [ 19.155893] kunit_try_run_case+0x170/0x3f0 [ 19.155981] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.156078] kthread+0x328/0x630 [ 19.156150] ret_from_fork+0x10/0x20 [ 19.156231] [ 19.156272] Freed by task 187: [ 19.156335] kasan_save_stack+0x3c/0x68 [ 19.156439] kasan_save_track+0x20/0x40 [ 19.156526] kasan_save_free_info+0x4c/0x78 [ 19.156616] __kasan_slab_free+0x6c/0x98 [ 19.156697] kfree+0x214/0x3c8 [ 19.156776] kmalloc_uaf_memset+0x11c/0x310 [ 19.156860] kunit_try_run_case+0x170/0x3f0 [ 19.156947] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.157044] kthread+0x328/0x630 [ 19.157116] ret_from_fork+0x10/0x20 [ 19.157201] [ 19.158193] The buggy address belongs to the object at fff00000c78aa700 [ 19.158193] which belongs to the cache kmalloc-64 of size 64 [ 19.159045] The buggy address is located 0 bytes inside of [ 19.159045] freed 64-byte region [fff00000c78aa700, fff00000c78aa740) [ 19.159187] [ 19.159234] The buggy address belongs to the physical page: [ 19.159306] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1078aa [ 19.159421] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.159512] page_type: f5(slab) [ 19.159581] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 19.159681] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 19.159840] page dumped because: kasan: bad access detected [ 19.159913] [ 19.159956] Memory state around the buggy address: [ 19.160050] fff00000c78aa600: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 19.160143] fff00000c78aa680: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 19.160234] >fff00000c78aa700: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 19.160315] ^ [ 19.160606] fff00000c78aa780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.160700] fff00000c78aa800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.160809] ==================================================================
[ 13.915358] ================================================================== [ 13.916200] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x1a3/0x360 [ 13.916558] Write of size 33 at addr ffff88810332dc00 by task kunit_try_catch/203 [ 13.916920] [ 13.917221] CPU: 1 UID: 0 PID: 203 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 13.917281] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.917296] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.917321] Call Trace: [ 13.917335] <TASK> [ 13.917356] dump_stack_lvl+0x73/0xb0 [ 13.917392] print_report+0xd1/0x650 [ 13.917418] ? __virt_addr_valid+0x1db/0x2d0 [ 13.917446] ? kmalloc_uaf_memset+0x1a3/0x360 [ 13.917471] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.917497] ? kmalloc_uaf_memset+0x1a3/0x360 [ 13.917522] kasan_report+0x141/0x180 [ 13.917548] ? kmalloc_uaf_memset+0x1a3/0x360 [ 13.917579] kasan_check_range+0x10c/0x1c0 [ 13.917606] __asan_memset+0x27/0x50 [ 13.917629] kmalloc_uaf_memset+0x1a3/0x360 [ 13.917670] ? __pfx_kmalloc_uaf_memset+0x10/0x10 [ 13.917696] ? __schedule+0x10cc/0x2b60 [ 13.917722] ? __pfx_read_tsc+0x10/0x10 [ 13.917747] ? ktime_get_ts64+0x86/0x230 [ 13.917776] kunit_try_run_case+0x1a5/0x480 [ 13.917805] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.917830] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.917857] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.917884] ? __kthread_parkme+0x82/0x180 [ 13.917907] ? preempt_count_sub+0x50/0x80 [ 13.918000] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.918030] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.918056] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.918083] kthread+0x337/0x6f0 [ 13.918106] ? trace_preempt_on+0x20/0xc0 [ 13.918134] ? __pfx_kthread+0x10/0x10 [ 13.918158] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.918182] ? calculate_sigpending+0x7b/0xa0 [ 13.918210] ? __pfx_kthread+0x10/0x10 [ 13.918235] ret_from_fork+0x116/0x1d0 [ 13.918257] ? __pfx_kthread+0x10/0x10 [ 13.918282] ret_from_fork_asm+0x1a/0x30 [ 13.918320] </TASK> [ 13.918333] [ 13.935610] Allocated by task 203: [ 13.936267] kasan_save_stack+0x45/0x70 [ 13.936500] kasan_save_track+0x18/0x40 [ 13.936735] kasan_save_alloc_info+0x3b/0x50 [ 13.937768] __kasan_kmalloc+0xb7/0xc0 [ 13.938059] __kmalloc_cache_noprof+0x189/0x420 [ 13.938319] kmalloc_uaf_memset+0xa9/0x360 [ 13.938546] kunit_try_run_case+0x1a5/0x480 [ 13.939174] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.939482] kthread+0x337/0x6f0 [ 13.939692] ret_from_fork+0x116/0x1d0 [ 13.940163] ret_from_fork_asm+0x1a/0x30 [ 13.940415] [ 13.940515] Freed by task 203: [ 13.940718] kasan_save_stack+0x45/0x70 [ 13.940925] kasan_save_track+0x18/0x40 [ 13.941679] kasan_save_free_info+0x3f/0x60 [ 13.941879] __kasan_slab_free+0x56/0x70 [ 13.942353] kfree+0x222/0x3f0 [ 13.942569] kmalloc_uaf_memset+0x12b/0x360 [ 13.942963] kunit_try_run_case+0x1a5/0x480 [ 13.943216] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.943502] kthread+0x337/0x6f0 [ 13.943724] ret_from_fork+0x116/0x1d0 [ 13.944327] ret_from_fork_asm+0x1a/0x30 [ 13.944513] [ 13.945018] The buggy address belongs to the object at ffff88810332dc00 [ 13.945018] which belongs to the cache kmalloc-64 of size 64 [ 13.945616] The buggy address is located 0 bytes inside of [ 13.945616] freed 64-byte region [ffff88810332dc00, ffff88810332dc40) [ 13.946563] [ 13.946845] The buggy address belongs to the physical page: [ 13.947160] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10332d [ 13.947720] flags: 0x200000000000000(node=0|zone=2) [ 13.948122] page_type: f5(slab) [ 13.948298] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 13.948706] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 13.949185] page dumped because: kasan: bad access detected [ 13.950151] [ 13.950263] Memory state around the buggy address: [ 13.950469] ffff88810332db00: 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc [ 13.951289] ffff88810332db80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 13.951677] >ffff88810332dc00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 13.952290] ^ [ 13.952501] ffff88810332dc80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.953182] ffff88810332dd00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.953492] ==================================================================