Date
July 19, 2025, 11:12 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 15.329504] ================================================================== [ 15.329626] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x170/0x310 [ 15.329678] Write of size 33 at addr fff00000c77cb800 by task kunit_try_catch/186 [ 15.329817] [ 15.329994] CPU: 1 UID: 0 PID: 186 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 15.330097] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.330171] Hardware name: linux,dummy-virt (DT) [ 15.330210] Call trace: [ 15.330260] show_stack+0x20/0x38 (C) [ 15.330312] dump_stack_lvl+0x8c/0xd0 [ 15.330388] print_report+0x118/0x5d0 [ 15.330453] kasan_report+0xdc/0x128 [ 15.330501] kasan_check_range+0x100/0x1a8 [ 15.330549] __asan_memset+0x34/0x78 [ 15.330726] kmalloc_uaf_memset+0x170/0x310 [ 15.330882] kunit_try_run_case+0x170/0x3f0 [ 15.330966] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.331021] kthread+0x328/0x630 [ 15.331063] ret_from_fork+0x10/0x20 [ 15.331111] [ 15.331135] Allocated by task 186: [ 15.331175] kasan_save_stack+0x3c/0x68 [ 15.331217] kasan_save_track+0x20/0x40 [ 15.331272] kasan_save_alloc_info+0x40/0x58 [ 15.331319] __kasan_kmalloc+0xd4/0xd8 [ 15.331459] __kmalloc_cache_noprof+0x16c/0x3c0 [ 15.331595] kmalloc_uaf_memset+0xb8/0x310 [ 15.331639] kunit_try_run_case+0x170/0x3f0 [ 15.331683] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.331766] kthread+0x328/0x630 [ 15.331830] ret_from_fork+0x10/0x20 [ 15.331953] [ 15.331988] Freed by task 186: [ 15.332015] kasan_save_stack+0x3c/0x68 [ 15.332052] kasan_save_track+0x20/0x40 [ 15.332089] kasan_save_free_info+0x4c/0x78 [ 15.332424] __kasan_slab_free+0x6c/0x98 [ 15.332480] kfree+0x214/0x3c8 [ 15.332523] kmalloc_uaf_memset+0x11c/0x310 [ 15.332566] kunit_try_run_case+0x170/0x3f0 [ 15.332603] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.332646] kthread+0x328/0x630 [ 15.332677] ret_from_fork+0x10/0x20 [ 15.332724] [ 15.332743] The buggy address belongs to the object at fff00000c77cb800 [ 15.332743] which belongs to the cache kmalloc-64 of size 64 [ 15.332811] The buggy address is located 0 bytes inside of [ 15.332811] freed 64-byte region [fff00000c77cb800, fff00000c77cb840) [ 15.332872] [ 15.332895] The buggy address belongs to the physical page: [ 15.332925] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1077cb [ 15.332989] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 15.333046] page_type: f5(slab) [ 15.333100] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 15.333152] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 15.333211] page dumped because: kasan: bad access detected [ 15.333241] [ 15.333269] Memory state around the buggy address: [ 15.333317] fff00000c77cb700: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 15.333368] fff00000c77cb780: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 15.333427] >fff00000c77cb800: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 15.333491] ^ [ 15.333521] fff00000c77cb880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.333575] fff00000c77cb900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.333628] ==================================================================
[ 12.303054] ================================================================== [ 12.303610] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x1a3/0x360 [ 12.303886] Write of size 33 at addr ffff888102fd3180 by task kunit_try_catch/203 [ 12.304181] [ 12.304300] CPU: 0 UID: 0 PID: 203 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 12.304344] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.304355] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.304375] Call Trace: [ 12.304386] <TASK> [ 12.304402] dump_stack_lvl+0x73/0xb0 [ 12.304521] print_report+0xd1/0x610 [ 12.304545] ? __virt_addr_valid+0x1db/0x2d0 [ 12.304568] ? kmalloc_uaf_memset+0x1a3/0x360 [ 12.304587] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.304608] ? kmalloc_uaf_memset+0x1a3/0x360 [ 12.304628] kasan_report+0x141/0x180 [ 12.304648] ? kmalloc_uaf_memset+0x1a3/0x360 [ 12.304674] kasan_check_range+0x10c/0x1c0 [ 12.304697] __asan_memset+0x27/0x50 [ 12.304716] kmalloc_uaf_memset+0x1a3/0x360 [ 12.304736] ? __pfx_kmalloc_uaf_memset+0x10/0x10 [ 12.304757] ? __schedule+0x10cc/0x2b60 [ 12.304780] ? __pfx_read_tsc+0x10/0x10 [ 12.304800] ? ktime_get_ts64+0x86/0x230 [ 12.304825] kunit_try_run_case+0x1a5/0x480 [ 12.304849] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.304870] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.304893] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.304915] ? __kthread_parkme+0x82/0x180 [ 12.304934] ? preempt_count_sub+0x50/0x80 [ 12.304957] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.304985] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.305019] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.305041] kthread+0x337/0x6f0 [ 12.305059] ? trace_preempt_on+0x20/0xc0 [ 12.305081] ? __pfx_kthread+0x10/0x10 [ 12.305101] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.305121] ? calculate_sigpending+0x7b/0xa0 [ 12.305144] ? __pfx_kthread+0x10/0x10 [ 12.305164] ret_from_fork+0x116/0x1d0 [ 12.305181] ? __pfx_kthread+0x10/0x10 [ 12.305200] ret_from_fork_asm+0x1a/0x30 [ 12.305230] </TASK> [ 12.305240] [ 12.312642] Allocated by task 203: [ 12.312798] kasan_save_stack+0x45/0x70 [ 12.312984] kasan_save_track+0x18/0x40 [ 12.313171] kasan_save_alloc_info+0x3b/0x50 [ 12.313318] __kasan_kmalloc+0xb7/0xc0 [ 12.313761] __kmalloc_cache_noprof+0x189/0x420 [ 12.313992] kmalloc_uaf_memset+0xa9/0x360 [ 12.314143] kunit_try_run_case+0x1a5/0x480 [ 12.314289] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.314666] kthread+0x337/0x6f0 [ 12.314839] ret_from_fork+0x116/0x1d0 [ 12.315040] ret_from_fork_asm+0x1a/0x30 [ 12.315235] [ 12.315332] Freed by task 203: [ 12.315569] kasan_save_stack+0x45/0x70 [ 12.315757] kasan_save_track+0x18/0x40 [ 12.315932] kasan_save_free_info+0x3f/0x60 [ 12.316133] __kasan_slab_free+0x56/0x70 [ 12.316334] kfree+0x222/0x3f0 [ 12.316701] kmalloc_uaf_memset+0x12b/0x360 [ 12.317499] kunit_try_run_case+0x1a5/0x480 [ 12.318159] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.318467] kthread+0x337/0x6f0 [ 12.318617] ret_from_fork+0x116/0x1d0 [ 12.318791] ret_from_fork_asm+0x1a/0x30 [ 12.318956] [ 12.319064] The buggy address belongs to the object at ffff888102fd3180 [ 12.319064] which belongs to the cache kmalloc-64 of size 64 [ 12.319725] The buggy address is located 0 bytes inside of [ 12.319725] freed 64-byte region [ffff888102fd3180, ffff888102fd31c0) [ 12.320177] [ 12.320277] The buggy address belongs to the physical page: [ 12.320540] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102fd3 [ 12.321391] flags: 0x200000000000000(node=0|zone=2) [ 12.321564] page_type: f5(slab) [ 12.321687] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 12.321919] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 12.322904] page dumped because: kasan: bad access detected [ 12.323129] [ 12.323288] Memory state around the buggy address: [ 12.323882] ffff888102fd3080: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.324499] ffff888102fd3100: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.325291] >ffff888102fd3180: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.325514] ^ [ 12.325630] ffff888102fd3200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.325843] ffff888102fd3280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.326070] ==================================================================