Date
July 2, 2025, 11:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.279916] ================================================================== [ 18.280307] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x170/0x310 [ 18.280379] Write of size 33 at addr fff00000c706b080 by task kunit_try_catch/186 [ 18.280715] [ 18.280803] CPU: 0 UID: 0 PID: 186 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 18.280950] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.281002] Hardware name: linux,dummy-virt (DT) [ 18.281194] Call trace: [ 18.281255] show_stack+0x20/0x38 (C) [ 18.281434] dump_stack_lvl+0x8c/0xd0 [ 18.281539] print_report+0x118/0x608 [ 18.281598] kasan_report+0xdc/0x128 [ 18.281645] kasan_check_range+0x100/0x1a8 [ 18.281696] __asan_memset+0x34/0x78 [ 18.281741] kmalloc_uaf_memset+0x170/0x310 [ 18.282001] kunit_try_run_case+0x170/0x3f0 [ 18.282266] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.282400] kthread+0x328/0x630 [ 18.282481] ret_from_fork+0x10/0x20 [ 18.282673] [ 18.282693] Allocated by task 186: [ 18.282731] kasan_save_stack+0x3c/0x68 [ 18.283233] kasan_save_track+0x20/0x40 [ 18.283383] kasan_save_alloc_info+0x40/0x58 [ 18.283565] __kasan_kmalloc+0xd4/0xd8 [ 18.283636] __kmalloc_cache_noprof+0x16c/0x3c0 [ 18.284044] kmalloc_uaf_memset+0xb8/0x310 [ 18.284291] kunit_try_run_case+0x170/0x3f0 [ 18.284499] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.284559] kthread+0x328/0x630 [ 18.284604] ret_from_fork+0x10/0x20 [ 18.284642] [ 18.284772] Freed by task 186: [ 18.284803] kasan_save_stack+0x3c/0x68 [ 18.284854] kasan_save_track+0x20/0x40 [ 18.284895] kasan_save_free_info+0x4c/0x78 [ 18.285127] __kasan_slab_free+0x6c/0x98 [ 18.285199] kfree+0x214/0x3c8 [ 18.285401] kmalloc_uaf_memset+0x11c/0x310 [ 18.285616] kunit_try_run_case+0x170/0x3f0 [ 18.285716] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.286147] kthread+0x328/0x630 [ 18.286219] ret_from_fork+0x10/0x20 [ 18.286348] [ 18.286404] The buggy address belongs to the object at fff00000c706b080 [ 18.286404] which belongs to the cache kmalloc-64 of size 64 [ 18.286523] The buggy address is located 0 bytes inside of [ 18.286523] freed 64-byte region [fff00000c706b080, fff00000c706b0c0) [ 18.286751] [ 18.287055] The buggy address belongs to the physical page: [ 18.287101] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10706b [ 18.287214] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.287492] page_type: f5(slab) [ 18.287598] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 18.287731] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 18.287775] page dumped because: kasan: bad access detected [ 18.287806] [ 18.287824] Memory state around the buggy address: [ 18.287868] fff00000c706af80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 18.287911] fff00000c706b000: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 18.287952] >fff00000c706b080: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 18.287993] ^ [ 18.288020] fff00000c706b100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.288075] fff00000c706b180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.288114] ==================================================================
[ 11.666036] ================================================================== [ 11.666481] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x1a3/0x360 [ 11.667090] Write of size 33 at addr ffff888102c84f00 by task kunit_try_catch/205 [ 11.667339] [ 11.667466] CPU: 1 UID: 0 PID: 205 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 11.667514] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.667525] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.667547] Call Trace: [ 11.667760] <TASK> [ 11.667794] dump_stack_lvl+0x73/0xb0 [ 11.667845] print_report+0xd1/0x650 [ 11.667869] ? __virt_addr_valid+0x1db/0x2d0 [ 11.667893] ? kmalloc_uaf_memset+0x1a3/0x360 [ 11.667913] ? kasan_complete_mode_report_info+0x64/0x200 [ 11.667933] ? kmalloc_uaf_memset+0x1a3/0x360 [ 11.667953] kasan_report+0x141/0x180 [ 11.667974] ? kmalloc_uaf_memset+0x1a3/0x360 [ 11.667998] kasan_check_range+0x10c/0x1c0 [ 11.668021] __asan_memset+0x27/0x50 [ 11.668039] kmalloc_uaf_memset+0x1a3/0x360 [ 11.668060] ? __pfx_kmalloc_uaf_memset+0x10/0x10 [ 11.668080] ? __schedule+0x10cc/0x2b60 [ 11.668102] ? __pfx_read_tsc+0x10/0x10 [ 11.668123] ? ktime_get_ts64+0x86/0x230 [ 11.668147] kunit_try_run_case+0x1a5/0x480 [ 11.668173] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.668193] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.668216] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.668237] ? __kthread_parkme+0x82/0x180 [ 11.668257] ? preempt_count_sub+0x50/0x80 [ 11.668280] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.668303] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.668324] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.668345] kthread+0x337/0x6f0 [ 11.668363] ? trace_preempt_on+0x20/0xc0 [ 11.668398] ? __pfx_kthread+0x10/0x10 [ 11.668418] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.668437] ? calculate_sigpending+0x7b/0xa0 [ 11.668461] ? __pfx_kthread+0x10/0x10 [ 11.668481] ret_from_fork+0x116/0x1d0 [ 11.668498] ? __pfx_kthread+0x10/0x10 [ 11.668517] ret_from_fork_asm+0x1a/0x30 [ 11.668547] </TASK> [ 11.668558] [ 11.678162] Allocated by task 205: [ 11.678492] kasan_save_stack+0x45/0x70 [ 11.678742] kasan_save_track+0x18/0x40 [ 11.679127] kasan_save_alloc_info+0x3b/0x50 [ 11.679410] __kasan_kmalloc+0xb7/0xc0 [ 11.679557] __kmalloc_cache_noprof+0x189/0x420 [ 11.680102] kmalloc_uaf_memset+0xa9/0x360 [ 11.680302] kunit_try_run_case+0x1a5/0x480 [ 11.680606] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.681071] kthread+0x337/0x6f0 [ 11.681236] ret_from_fork+0x116/0x1d0 [ 11.681531] ret_from_fork_asm+0x1a/0x30 [ 11.681733] [ 11.681890] Freed by task 205: [ 11.682022] kasan_save_stack+0x45/0x70 [ 11.682222] kasan_save_track+0x18/0x40 [ 11.682400] kasan_save_free_info+0x3f/0x60 [ 11.682957] __kasan_slab_free+0x56/0x70 [ 11.683148] kfree+0x222/0x3f0 [ 11.683293] kmalloc_uaf_memset+0x12b/0x360 [ 11.683784] kunit_try_run_case+0x1a5/0x480 [ 11.684013] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.684244] kthread+0x337/0x6f0 [ 11.684422] ret_from_fork+0x116/0x1d0 [ 11.684600] ret_from_fork_asm+0x1a/0x30 [ 11.685114] [ 11.685211] The buggy address belongs to the object at ffff888102c84f00 [ 11.685211] which belongs to the cache kmalloc-64 of size 64 [ 11.686130] The buggy address is located 0 bytes inside of [ 11.686130] freed 64-byte region [ffff888102c84f00, ffff888102c84f40) [ 11.686604] [ 11.686704] The buggy address belongs to the physical page: [ 11.687234] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102c84 [ 11.687552] flags: 0x200000000000000(node=0|zone=2) [ 11.687906] page_type: f5(slab) [ 11.688045] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 11.688392] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 11.689163] page dumped because: kasan: bad access detected [ 11.689416] [ 11.689513] Memory state around the buggy address: [ 11.689735] ffff888102c84e00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 11.690254] ffff888102c84e80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 11.690619] >ffff888102c84f00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 11.691100] ^ [ 11.691296] ffff888102c84f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.691788] ffff888102c85000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 11.692088] ==================================================================