Date
July 12, 2025, 11:09 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 22.317788] ================================================================== [ 22.317902] BUG: KASAN: slab-use-after-free in strlen+0xa8/0xb0 [ 22.318008] Read of size 1 at addr fff00000c5941f90 by task kunit_try_catch/260 [ 22.318107] [ 22.318170] CPU: 1 UID: 0 PID: 260 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 22.318330] Tainted: [B]=BAD_PAGE, [N]=TEST [ 22.318625] Hardware name: linux,dummy-virt (DT) [ 22.318722] Call trace: [ 22.318789] show_stack+0x20/0x38 (C) [ 22.318934] dump_stack_lvl+0x8c/0xd0 [ 22.319046] print_report+0x118/0x608 [ 22.319211] kasan_report+0xdc/0x128 [ 22.319326] __asan_report_load1_noabort+0x20/0x30 [ 22.319656] strlen+0xa8/0xb0 [ 22.319810] kasan_strings+0x418/0xb00 [ 22.319976] kunit_try_run_case+0x170/0x3f0 [ 22.320087] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 22.320214] kthread+0x328/0x630 [ 22.320322] ret_from_fork+0x10/0x20 [ 22.320436] [ 22.320485] Allocated by task 260: [ 22.320552] kasan_save_stack+0x3c/0x68 [ 22.320652] kasan_save_track+0x20/0x40 [ 22.320744] kasan_save_alloc_info+0x40/0x58 [ 22.320864] __kasan_kmalloc+0xd4/0xd8 [ 22.320974] __kmalloc_cache_noprof+0x16c/0x3c0 [ 22.321074] kasan_strings+0xc8/0xb00 [ 22.321166] kunit_try_run_case+0x170/0x3f0 [ 22.321261] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 22.321373] kthread+0x328/0x630 [ 22.321461] ret_from_fork+0x10/0x20 [ 22.321557] [ 22.321606] Freed by task 260: [ 22.321671] kasan_save_stack+0x3c/0x68 [ 22.321759] kasan_save_track+0x20/0x40 [ 22.321863] kasan_save_free_info+0x4c/0x78 [ 22.321968] __kasan_slab_free+0x6c/0x98 [ 22.322068] kfree+0x214/0x3c8 [ 22.322156] kasan_strings+0x24c/0xb00 [ 22.322244] kunit_try_run_case+0x170/0x3f0 [ 22.322338] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 22.322451] kthread+0x328/0x630 [ 22.322546] ret_from_fork+0x10/0x20 [ 22.322645] [ 22.322700] The buggy address belongs to the object at fff00000c5941f80 [ 22.322700] which belongs to the cache kmalloc-32 of size 32 [ 22.323152] The buggy address is located 16 bytes inside of [ 22.323152] freed 32-byte region [fff00000c5941f80, fff00000c5941fa0) [ 22.323312] [ 22.323355] The buggy address belongs to the physical page: [ 22.324389] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105941 [ 22.324573] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 22.324750] page_type: f5(slab) [ 22.324860] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 22.325037] raw: 0000000000000000 0000000000400040 00000000f5000000 0000000000000000 [ 22.325186] page dumped because: kasan: bad access detected [ 22.325260] [ 22.325308] Memory state around the buggy address: [ 22.325386] fff00000c5941e80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 22.325838] fff00000c5941f00: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 22.326097] >fff00000c5941f80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 22.326189] ^ [ 22.326264] fff00000c5942000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 22.326359] fff00000c5942080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.326436] ==================================================================
[ 14.619558] ================================================================== [ 14.620249] BUG: KASAN: slab-use-after-free in strlen+0x8f/0xb0 [ 14.620975] Read of size 1 at addr ffff888103acf910 by task kunit_try_catch/277 [ 14.621536] [ 14.621622] CPU: 0 UID: 0 PID: 277 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 14.621673] Tainted: [B]=BAD_PAGE, [N]=TEST [ 14.621685] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 14.621705] Call Trace: [ 14.621723] <TASK> [ 14.621826] dump_stack_lvl+0x73/0xb0 [ 14.621859] print_report+0xd1/0x650 [ 14.621883] ? __virt_addr_valid+0x1db/0x2d0 [ 14.621906] ? strlen+0x8f/0xb0 [ 14.621923] ? kasan_complete_mode_report_info+0x64/0x200 [ 14.621947] ? strlen+0x8f/0xb0 [ 14.621965] kasan_report+0x141/0x180 [ 14.621987] ? strlen+0x8f/0xb0 [ 14.622008] __asan_report_load1_noabort+0x18/0x20 [ 14.622034] strlen+0x8f/0xb0 [ 14.622052] kasan_strings+0x57b/0xe80 [ 14.622071] ? trace_hardirqs_on+0x37/0xe0 [ 14.622095] ? __pfx_kasan_strings+0x10/0x10 [ 14.622115] ? finish_task_switch.isra.0+0x153/0x700 [ 14.622138] ? __switch_to+0x47/0xf50 [ 14.622163] ? __schedule+0x10cc/0x2b60 [ 14.622185] ? __pfx_read_tsc+0x10/0x10 [ 14.622207] ? ktime_get_ts64+0x86/0x230 [ 14.622231] kunit_try_run_case+0x1a5/0x480 [ 14.622255] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.622279] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 14.622303] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 14.622326] ? __kthread_parkme+0x82/0x180 [ 14.622348] ? preempt_count_sub+0x50/0x80 [ 14.622377] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.622401] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.622425] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 14.622451] kthread+0x337/0x6f0 [ 14.622470] ? trace_preempt_on+0x20/0xc0 [ 14.622492] ? __pfx_kthread+0x10/0x10 [ 14.622512] ? _raw_spin_unlock_irq+0x47/0x80 [ 14.622533] ? calculate_sigpending+0x7b/0xa0 [ 14.622558] ? __pfx_kthread+0x10/0x10 [ 14.622580] ret_from_fork+0x116/0x1d0 [ 14.622598] ? __pfx_kthread+0x10/0x10 [ 14.622619] ret_from_fork_asm+0x1a/0x30 [ 14.622649] </TASK> [ 14.622658] [ 14.634523] Allocated by task 277: [ 14.634696] kasan_save_stack+0x45/0x70 [ 14.635141] kasan_save_track+0x18/0x40 [ 14.635480] kasan_save_alloc_info+0x3b/0x50 [ 14.635879] __kasan_kmalloc+0xb7/0xc0 [ 14.636452] __kmalloc_cache_noprof+0x189/0x420 [ 14.636874] kasan_strings+0xc0/0xe80 [ 14.637012] kunit_try_run_case+0x1a5/0x480 [ 14.637159] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.637336] kthread+0x337/0x6f0 [ 14.637455] ret_from_fork+0x116/0x1d0 [ 14.637586] ret_from_fork_asm+0x1a/0x30 [ 14.637778] [ 14.637847] Freed by task 277: [ 14.637957] kasan_save_stack+0x45/0x70 [ 14.638297] kasan_save_track+0x18/0x40 [ 14.638500] kasan_save_free_info+0x3f/0x60 [ 14.638740] __kasan_slab_free+0x56/0x70 [ 14.638895] kfree+0x222/0x3f0 [ 14.639012] kasan_strings+0x2aa/0xe80 [ 14.639185] kunit_try_run_case+0x1a5/0x480 [ 14.639394] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.639709] kthread+0x337/0x6f0 [ 14.639892] ret_from_fork+0x116/0x1d0 [ 14.640082] ret_from_fork_asm+0x1a/0x30 [ 14.640243] [ 14.640339] The buggy address belongs to the object at ffff888103acf900 [ 14.640339] which belongs to the cache kmalloc-32 of size 32 [ 14.640711] The buggy address is located 16 bytes inside of [ 14.640711] freed 32-byte region [ffff888103acf900, ffff888103acf920) [ 14.641194] [ 14.641285] The buggy address belongs to the physical page: [ 14.641734] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103acf [ 14.642016] flags: 0x200000000000000(node=0|zone=2) [ 14.642195] page_type: f5(slab) [ 14.642371] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 14.642832] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 14.643154] page dumped because: kasan: bad access detected [ 14.643381] [ 14.643476] Memory state around the buggy address: [ 14.643740] ffff888103acf800: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 14.644020] ffff888103acf880: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 14.644289] >ffff888103acf900: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 14.644500] ^ [ 14.644645] ffff888103acf980: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 14.644985] ffff888103acfa00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 14.645297] ==================================================================