Date
July 12, 2025, 11:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.820265] ================================================================== [ 16.820334] BUG: KASAN: slab-use-after-free in kmalloc_uaf2+0x3f4/0x468 [ 16.820382] Read of size 1 at addr fff00000c592faa8 by task kunit_try_catch/188 [ 16.820457] [ 16.820490] CPU: 1 UID: 0 PID: 188 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 16.820619] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.820748] Hardware name: linux,dummy-virt (DT) [ 16.820792] Call trace: [ 16.820834] show_stack+0x20/0x38 (C) [ 16.820890] dump_stack_lvl+0x8c/0xd0 [ 16.820955] print_report+0x118/0x5d0 [ 16.821020] kasan_report+0xdc/0x128 [ 16.821086] __asan_report_load1_noabort+0x20/0x30 [ 16.821158] kmalloc_uaf2+0x3f4/0x468 [ 16.821245] kunit_try_run_case+0x170/0x3f0 [ 16.821310] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.821365] kthread+0x328/0x630 [ 16.821407] ret_from_fork+0x10/0x20 [ 16.821770] [ 16.821798] Allocated by task 188: [ 16.821829] kasan_save_stack+0x3c/0x68 [ 16.822013] kasan_save_track+0x20/0x40 [ 16.822058] kasan_save_alloc_info+0x40/0x58 [ 16.822255] __kasan_kmalloc+0xd4/0xd8 [ 16.822329] __kmalloc_cache_noprof+0x16c/0x3c0 [ 16.822397] kmalloc_uaf2+0xc4/0x468 [ 16.822434] kunit_try_run_case+0x170/0x3f0 [ 16.822473] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.822606] kthread+0x328/0x630 [ 16.822657] ret_from_fork+0x10/0x20 [ 16.822694] [ 16.822712] Freed by task 188: [ 16.822763] kasan_save_stack+0x3c/0x68 [ 16.822820] kasan_save_track+0x20/0x40 [ 16.823157] kasan_save_free_info+0x4c/0x78 [ 16.823399] __kasan_slab_free+0x6c/0x98 [ 16.823506] kfree+0x214/0x3c8 [ 16.823608] kmalloc_uaf2+0x134/0x468 [ 16.823706] kunit_try_run_case+0x170/0x3f0 [ 16.823853] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.823920] kthread+0x328/0x630 [ 16.823953] ret_from_fork+0x10/0x20 [ 16.823988] [ 16.824030] The buggy address belongs to the object at fff00000c592fa80 [ 16.824030] which belongs to the cache kmalloc-64 of size 64 [ 16.824093] The buggy address is located 40 bytes inside of [ 16.824093] freed 64-byte region [fff00000c592fa80, fff00000c592fac0) [ 16.824416] [ 16.824649] The buggy address belongs to the physical page: [ 16.824729] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10592f [ 16.824863] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.824983] page_type: f5(slab) [ 16.825060] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 16.825194] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 16.825285] page dumped because: kasan: bad access detected [ 16.825515] [ 16.825535] Memory state around the buggy address: [ 16.825697] fff00000c592f980: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 16.825844] fff00000c592fa00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 16.825919] >fff00000c592fa80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 16.826008] ^ [ 16.826062] fff00000c592fb00: 00 00 00 00 00 03 fc fc fc fc fc fc fc fc fc fc [ 16.826196] fff00000c592fb80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.826288] ==================================================================
[ 13.278370] ================================================================== [ 13.278990] BUG: KASAN: slab-use-after-free in kmalloc_uaf2+0x4a8/0x520 [ 13.279630] Read of size 1 at addr ffff888103a503a8 by task kunit_try_catch/205 [ 13.279946] [ 13.280145] CPU: 0 UID: 0 PID: 205 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 13.280252] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.280277] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.280313] Call Trace: [ 13.280325] <TASK> [ 13.280342] dump_stack_lvl+0x73/0xb0 [ 13.280375] print_report+0xd1/0x610 [ 13.280398] ? __virt_addr_valid+0x1db/0x2d0 [ 13.280423] ? kmalloc_uaf2+0x4a8/0x520 [ 13.280442] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.280465] ? kmalloc_uaf2+0x4a8/0x520 [ 13.280486] kasan_report+0x141/0x180 [ 13.280507] ? kmalloc_uaf2+0x4a8/0x520 [ 13.280532] __asan_report_load1_noabort+0x18/0x20 [ 13.280557] kmalloc_uaf2+0x4a8/0x520 [ 13.280589] ? __pfx_kmalloc_uaf2+0x10/0x10 [ 13.280609] ? finish_task_switch.isra.0+0x153/0x700 [ 13.280634] ? __switch_to+0x47/0xf50 [ 13.280661] ? __schedule+0x10cc/0x2b60 [ 13.280683] ? __pfx_read_tsc+0x10/0x10 [ 13.280704] ? ktime_get_ts64+0x86/0x230 [ 13.280730] kunit_try_run_case+0x1a5/0x480 [ 13.280755] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.280778] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.280803] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.280826] ? __kthread_parkme+0x82/0x180 [ 13.280848] ? preempt_count_sub+0x50/0x80 [ 13.280870] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.280895] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.280919] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.280944] kthread+0x337/0x6f0 [ 13.280963] ? trace_preempt_on+0x20/0xc0 [ 13.281004] ? __pfx_kthread+0x10/0x10 [ 13.281024] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.281046] ? calculate_sigpending+0x7b/0xa0 [ 13.281071] ? __pfx_kthread+0x10/0x10 [ 13.281093] ret_from_fork+0x116/0x1d0 [ 13.281111] ? __pfx_kthread+0x10/0x10 [ 13.281132] ret_from_fork_asm+0x1a/0x30 [ 13.281163] </TASK> [ 13.281172] [ 13.290046] Allocated by task 205: [ 13.290184] kasan_save_stack+0x45/0x70 [ 13.290686] kasan_save_track+0x18/0x40 [ 13.291149] kasan_save_alloc_info+0x3b/0x50 [ 13.291515] __kasan_kmalloc+0xb7/0xc0 [ 13.291652] __kmalloc_cache_noprof+0x189/0x420 [ 13.291811] kmalloc_uaf2+0xc6/0x520 [ 13.291940] kunit_try_run_case+0x1a5/0x480 [ 13.292505] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.293081] kthread+0x337/0x6f0 [ 13.293437] ret_from_fork+0x116/0x1d0 [ 13.293803] ret_from_fork_asm+0x1a/0x30 [ 13.294371] [ 13.294535] Freed by task 205: [ 13.294871] kasan_save_stack+0x45/0x70 [ 13.295188] kasan_save_track+0x18/0x40 [ 13.295542] kasan_save_free_info+0x3f/0x60 [ 13.295694] __kasan_slab_free+0x56/0x70 [ 13.295832] kfree+0x222/0x3f0 [ 13.295950] kmalloc_uaf2+0x14c/0x520 [ 13.296380] kunit_try_run_case+0x1a5/0x480 [ 13.296792] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.297461] kthread+0x337/0x6f0 [ 13.297841] ret_from_fork+0x116/0x1d0 [ 13.298233] ret_from_fork_asm+0x1a/0x30 [ 13.298824] [ 13.298997] The buggy address belongs to the object at ffff888103a50380 [ 13.298997] which belongs to the cache kmalloc-64 of size 64 [ 13.299581] The buggy address is located 40 bytes inside of [ 13.299581] freed 64-byte region [ffff888103a50380, ffff888103a503c0) [ 13.299932] [ 13.300005] The buggy address belongs to the physical page: [ 13.300180] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103a50 [ 13.300876] flags: 0x200000000000000(node=0|zone=2) [ 13.301428] page_type: f5(slab) [ 13.301807] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 13.302665] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 13.303413] page dumped because: kasan: bad access detected [ 13.304124] [ 13.304311] Memory state around the buggy address: [ 13.304778] ffff888103a50280: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 13.305579] ffff888103a50300: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 13.305965] >ffff888103a50380: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 13.306173] ^ [ 13.306332] ffff888103a50400: 00 00 00 00 00 03 fc fc fc fc fc fc fc fc fc fc [ 13.306539] ffff888103a50480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.306751] ==================================================================