Date
May 23, 2025, 11:07 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 31.024458] ================================================================== [ 31.025147] BUG: KASAN: slab-use-after-free in kasan_strings+0x95c/0xb00 [ 31.025437] Read of size 1 at addr fff00000c77a2dd0 by task kunit_try_catch/261 [ 31.025734] [ 31.025850] CPU: 0 UID: 0 PID: 261 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc7 #1 PREEMPT [ 31.026196] Tainted: [B]=BAD_PAGE, [N]=TEST [ 31.026312] Hardware name: linux,dummy-virt (DT) [ 31.026934] Call trace: [ 31.027135] show_stack+0x20/0x38 (C) [ 31.027411] dump_stack_lvl+0x8c/0xd0 [ 31.027588] print_report+0x118/0x608 [ 31.027734] kasan_report+0xdc/0x128 [ 31.027874] __asan_report_load1_noabort+0x20/0x30 [ 31.028037] kasan_strings+0x95c/0xb00 [ 31.028788] kunit_try_run_case+0x170/0x3f0 [ 31.029344] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.029535] kthread+0x328/0x630 [ 31.029686] ret_from_fork+0x10/0x20 [ 31.029837] [ 31.029900] Allocated by task 261: [ 31.029986] kasan_save_stack+0x3c/0x68 [ 31.030115] kasan_save_track+0x20/0x40 [ 31.030530] kasan_save_alloc_info+0x40/0x58 [ 31.031392] __kasan_kmalloc+0xd4/0xd8 [ 31.031659] __kmalloc_cache_noprof+0x15c/0x3c0 [ 31.031919] kasan_strings+0xc8/0xb00 [ 31.032532] kunit_try_run_case+0x170/0x3f0 [ 31.032819] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.033393] kthread+0x328/0x630 [ 31.033548] ret_from_fork+0x10/0x20 [ 31.033645] [ 31.033697] Freed by task 261: [ 31.033774] kasan_save_stack+0x3c/0x68 [ 31.034538] kasan_save_track+0x20/0x40 [ 31.034700] kasan_save_free_info+0x4c/0x78 [ 31.034808] __kasan_slab_free+0x6c/0x98 [ 31.034991] kfree+0x214/0x3c8 [ 31.035151] kasan_strings+0x24c/0xb00 [ 31.035263] kunit_try_run_case+0x170/0x3f0 [ 31.035410] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.035571] kthread+0x328/0x630 [ 31.035682] ret_from_fork+0x10/0x20 [ 31.035802] [ 31.035868] The buggy address belongs to the object at fff00000c77a2dc0 [ 31.035868] which belongs to the cache kmalloc-32 of size 32 [ 31.036618] The buggy address is located 16 bytes inside of [ 31.036618] freed 32-byte region [fff00000c77a2dc0, fff00000c77a2de0) [ 31.036852] [ 31.037122] The buggy address belongs to the physical page: [ 31.037249] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1077a2 [ 31.037650] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 31.037803] page_type: f5(slab) [ 31.038236] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 31.038528] raw: 0000000000000000 0000000000400040 00000000f5000000 0000000000000000 [ 31.038718] page dumped because: kasan: bad access detected [ 31.038832] [ 31.039090] Memory state around the buggy address: [ 31.039225] fff00000c77a2c80: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 31.039369] fff00000c77a2d00: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 31.039982] >fff00000c77a2d80: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 31.040672] ^ [ 31.040797] fff00000c77a2e00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 31.040946] fff00000c77a2e80: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 31.041076] ==================================================================
[ 14.534813] ================================================================== [ 14.535115] BUG: KASAN: slab-use-after-free in kasan_strings+0xcbc/0xe80 [ 14.535376] Read of size 1 at addr ffff888102714790 by task kunit_try_catch/278 [ 14.535654] [ 14.535756] CPU: 0 UID: 0 PID: 278 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc7 #1 PREEMPT(voluntary) [ 14.535800] Tainted: [B]=BAD_PAGE, [N]=TEST [ 14.535813] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 14.535834] Call Trace: [ 14.535846] <TASK> [ 14.535862] dump_stack_lvl+0x73/0xb0 [ 14.535889] print_report+0xd1/0x650 [ 14.535911] ? __virt_addr_valid+0x1db/0x2d0 [ 14.535933] ? kasan_strings+0xcbc/0xe80 [ 14.535953] ? kasan_complete_mode_report_info+0x64/0x200 [ 14.535977] ? kasan_strings+0xcbc/0xe80 [ 14.535998] kasan_report+0x141/0x180 [ 14.536021] ? kasan_strings+0xcbc/0xe80 [ 14.536047] __asan_report_load1_noabort+0x18/0x20 [ 14.536068] kasan_strings+0xcbc/0xe80 [ 14.536088] ? trace_hardirqs_on+0x37/0xe0 [ 14.536111] ? __pfx_kasan_strings+0x10/0x10 [ 14.536132] ? finish_task_switch.isra.0+0x153/0x700 [ 14.536155] ? __switch_to+0x5d9/0xf60 [ 14.536176] ? dequeue_task_fair+0x156/0x4e0 [ 14.536200] ? __schedule+0x10cc/0x2b30 [ 14.536222] ? __pfx_read_tsc+0x10/0x10 [ 14.536241] ? ktime_get_ts64+0x86/0x230 [ 14.536267] kunit_try_run_case+0x1a5/0x480 [ 14.536290] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.536322] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 14.536345] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 14.536367] ? __kthread_parkme+0x82/0x180 [ 14.536389] ? preempt_count_sub+0x50/0x80 [ 14.536414] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.536437] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.536460] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 14.536482] kthread+0x337/0x6f0 [ 14.536499] ? trace_preempt_on+0x20/0xc0 [ 14.536521] ? __pfx_kthread+0x10/0x10 [ 14.536540] ? _raw_spin_unlock_irq+0x47/0x80 [ 14.536560] ? calculate_sigpending+0x7b/0xa0 [ 14.536581] ? __pfx_kthread+0x10/0x10 [ 14.536599] ret_from_fork+0x41/0x80 [ 14.536619] ? __pfx_kthread+0x10/0x10 [ 14.536637] ret_from_fork_asm+0x1a/0x30 [ 14.536667] </TASK> [ 14.536677] [ 14.543744] Allocated by task 278: [ 14.543871] kasan_save_stack+0x45/0x70 [ 14.544018] kasan_save_track+0x18/0x40 [ 14.544213] kasan_save_alloc_info+0x3b/0x50 [ 14.544454] __kasan_kmalloc+0xb7/0xc0 [ 14.544653] __kmalloc_cache_noprof+0x189/0x420 [ 14.544868] kasan_strings+0xc0/0xe80 [ 14.545057] kunit_try_run_case+0x1a5/0x480 [ 14.545245] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.545473] kthread+0x337/0x6f0 [ 14.545646] ret_from_fork+0x41/0x80 [ 14.545817] ret_from_fork_asm+0x1a/0x30 [ 14.545976] [ 14.546071] Freed by task 278: [ 14.546222] kasan_save_stack+0x45/0x70 [ 14.546401] kasan_save_track+0x18/0x40 [ 14.546583] kasan_save_free_info+0x3f/0x60 [ 14.546794] __kasan_slab_free+0x56/0x70 [ 14.546975] kfree+0x222/0x3f0 [ 14.547130] kasan_strings+0x2aa/0xe80 [ 14.547291] kunit_try_run_case+0x1a5/0x480 [ 14.547529] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.547736] kthread+0x337/0x6f0 [ 14.547856] ret_from_fork+0x41/0x80 [ 14.547987] ret_from_fork_asm+0x1a/0x30 [ 14.548125] [ 14.548196] The buggy address belongs to the object at ffff888102714780 [ 14.548196] which belongs to the cache kmalloc-32 of size 32 [ 14.548719] The buggy address is located 16 bytes inside of [ 14.548719] freed 32-byte region [ffff888102714780, ffff8881027147a0) [ 14.549235] [ 14.549339] The buggy address belongs to the physical page: [ 14.549616] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102714 [ 14.549914] flags: 0x200000000000000(node=0|zone=2) [ 14.550082] page_type: f5(slab) [ 14.550207] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 14.550591] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 14.550941] page dumped because: kasan: bad access detected [ 14.551198] [ 14.551293] Memory state around the buggy address: [ 14.551521] ffff888102714680: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 14.551816] ffff888102714700: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 14.552107] >ffff888102714780: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 14.552394] ^ [ 14.552596] ffff888102714800: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 14.552840] ffff888102714880: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 14.553056] ==================================================================