Date
May 23, 2025, 11:07 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 27.804136] ================================================================== [ 27.804661] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x170/0x310 [ 27.804911] Write of size 33 at addr fff00000c775e080 by task kunit_try_catch/188 [ 27.805315] [ 27.805683] CPU: 0 UID: 0 PID: 188 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc7 #1 PREEMPT [ 27.806063] Tainted: [B]=BAD_PAGE, [N]=TEST [ 27.806155] Hardware name: linux,dummy-virt (DT) [ 27.806382] Call trace: [ 27.806651] show_stack+0x20/0x38 (C) [ 27.807107] dump_stack_lvl+0x8c/0xd0 [ 27.807499] print_report+0x118/0x608 [ 27.807636] kasan_report+0xdc/0x128 [ 27.807753] kasan_check_range+0x100/0x1a8 [ 27.807899] __asan_memset+0x34/0x78 [ 27.808036] kmalloc_uaf_memset+0x170/0x310 [ 27.808245] kunit_try_run_case+0x170/0x3f0 [ 27.808633] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 27.809299] kthread+0x328/0x630 [ 27.809551] ret_from_fork+0x10/0x20 [ 27.809864] [ 27.809998] Allocated by task 188: [ 27.810151] kasan_save_stack+0x3c/0x68 [ 27.810271] kasan_save_track+0x20/0x40 [ 27.810382] kasan_save_alloc_info+0x40/0x58 [ 27.810510] __kasan_kmalloc+0xd4/0xd8 [ 27.810618] __kmalloc_cache_noprof+0x15c/0x3c0 [ 27.810744] kmalloc_uaf_memset+0xb8/0x310 [ 27.810857] kunit_try_run_case+0x170/0x3f0 [ 27.810977] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 27.811111] kthread+0x328/0x630 [ 27.812082] ret_from_fork+0x10/0x20 [ 27.812513] [ 27.812573] Freed by task 188: [ 27.812656] kasan_save_stack+0x3c/0x68 [ 27.812759] kasan_save_track+0x20/0x40 [ 27.813061] kasan_save_free_info+0x4c/0x78 [ 27.813329] __kasan_slab_free+0x6c/0x98 [ 27.813651] kfree+0x214/0x3c8 [ 27.814072] kmalloc_uaf_memset+0x11c/0x310 [ 27.814324] kunit_try_run_case+0x170/0x3f0 [ 27.814649] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 27.814904] kthread+0x328/0x630 [ 27.815219] ret_from_fork+0x10/0x20 [ 27.815361] [ 27.815427] The buggy address belongs to the object at fff00000c775e080 [ 27.815427] which belongs to the cache kmalloc-64 of size 64 [ 27.815620] The buggy address is located 0 bytes inside of [ 27.815620] freed 64-byte region [fff00000c775e080, fff00000c775e0c0) [ 27.815812] [ 27.815870] The buggy address belongs to the physical page: [ 27.816610] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10775e [ 27.817427] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 27.817738] page_type: f5(slab) [ 27.817972] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 27.818150] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 27.818597] page dumped because: kasan: bad access detected [ 27.818718] [ 27.818770] Memory state around the buggy address: [ 27.818870] fff00000c775df80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 27.819007] fff00000c775e000: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 27.819138] >fff00000c775e080: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 27.819256] ^ [ 27.819341] fff00000c775e100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.820394] fff00000c775e180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.821558] ==================================================================
[ 12.851176] ================================================================== [ 12.851616] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x1a3/0x360 [ 12.851860] Write of size 33 at addr ffff888102a38e00 by task kunit_try_catch/205 [ 12.852551] [ 12.852790] CPU: 1 UID: 0 PID: 205 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc7 #1 PREEMPT(voluntary) [ 12.852840] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.852852] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.852874] Call Trace: [ 12.852888] <TASK> [ 12.852906] dump_stack_lvl+0x73/0xb0 [ 12.852936] print_report+0xd1/0x650 [ 12.852958] ? __virt_addr_valid+0x1db/0x2d0 [ 12.852980] ? kmalloc_uaf_memset+0x1a3/0x360 [ 12.853000] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.853021] ? kmalloc_uaf_memset+0x1a3/0x360 [ 12.853043] kasan_report+0x141/0x180 [ 12.853064] ? kmalloc_uaf_memset+0x1a3/0x360 [ 12.853090] kasan_check_range+0x10c/0x1c0 [ 12.853110] __asan_memset+0x27/0x50 [ 12.853129] kmalloc_uaf_memset+0x1a3/0x360 [ 12.853150] ? __pfx_kmalloc_uaf_memset+0x10/0x10 [ 12.853171] ? sysvec_apic_timer_interrupt+0x50/0x90 [ 12.853195] ? trace_hardirqs_on+0x37/0xe0 [ 12.853219] ? __pfx_read_tsc+0x10/0x10 [ 12.853239] ? ktime_get_ts64+0x86/0x230 [ 12.853265] kunit_try_run_case+0x1a5/0x480 [ 12.853289] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.853324] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.853347] ? __kthread_parkme+0x82/0x180 [ 12.853368] ? preempt_count_sub+0x50/0x80 [ 12.853394] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.853416] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.853437] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.853459] kthread+0x337/0x6f0 [ 12.853475] ? trace_preempt_on+0x20/0xc0 [ 12.853496] ? __pfx_kthread+0x10/0x10 [ 12.853514] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.853533] ? calculate_sigpending+0x7b/0xa0 [ 12.853555] ? __pfx_kthread+0x10/0x10 [ 12.853573] ret_from_fork+0x41/0x80 [ 12.853593] ? __pfx_kthread+0x10/0x10 [ 12.853610] ret_from_fork_asm+0x1a/0x30 [ 12.853640] </TASK> [ 12.853651] [ 12.866517] Allocated by task 205: [ 12.866879] kasan_save_stack+0x45/0x70 [ 12.867302] kasan_save_track+0x18/0x40 [ 12.867633] kasan_save_alloc_info+0x3b/0x50 [ 12.867790] __kasan_kmalloc+0xb7/0xc0 [ 12.868050] __kmalloc_cache_noprof+0x189/0x420 [ 12.868468] kmalloc_uaf_memset+0xa9/0x360 [ 12.868857] kunit_try_run_case+0x1a5/0x480 [ 12.869357] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.869833] kthread+0x337/0x6f0 [ 12.870660] ret_from_fork+0x41/0x80 [ 12.871331] ret_from_fork_asm+0x1a/0x30 [ 12.871845] [ 12.872177] Freed by task 205: [ 12.872684] kasan_save_stack+0x45/0x70 [ 12.873153] kasan_save_track+0x18/0x40 [ 12.873633] kasan_save_free_info+0x3f/0x60 [ 12.873830] __kasan_slab_free+0x56/0x70 [ 12.874546] kfree+0x222/0x3f0 [ 12.874976] kmalloc_uaf_memset+0x12b/0x360 [ 12.875571] kunit_try_run_case+0x1a5/0x480 [ 12.876223] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.877022] kthread+0x337/0x6f0 [ 12.877216] ret_from_fork+0x41/0x80 [ 12.877389] ret_from_fork_asm+0x1a/0x30 [ 12.878102] [ 12.878463] The buggy address belongs to the object at ffff888102a38e00 [ 12.878463] which belongs to the cache kmalloc-64 of size 64 [ 12.880013] The buggy address is located 0 bytes inside of [ 12.880013] freed 64-byte region [ffff888102a38e00, ffff888102a38e40) [ 12.881659] [ 12.881764] The buggy address belongs to the physical page: [ 12.881987] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a38 [ 12.882309] flags: 0x200000000000000(node=0|zone=2) [ 12.882522] page_type: f5(slab) [ 12.882681] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 12.882977] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 12.883264] page dumped because: kasan: bad access detected [ 12.884471] [ 12.884944] Memory state around the buggy address: [ 12.885801] ffff888102a38d00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.886954] ffff888102a38d80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.887999] >ffff888102a38e00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.889089] ^ [ 12.889650] ffff888102a38e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.890708] ffff888102a38f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.891782] ==================================================================