Date
May 13, 2025, 12:07 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 21.450679] ================================================================== [ 21.450758] BUG: KASAN: slab-use-after-free in kasan_strings+0x95c/0xb00 [ 21.450832] Read of size 1 at addr fff00000c7794c90 by task kunit_try_catch/259 [ 21.451301] [ 21.451360] CPU: 1 UID: 0 PID: 259 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc6-next-20250513 #1 PREEMPT [ 21.451457] Tainted: [B]=BAD_PAGE, [N]=TEST [ 21.451490] Hardware name: linux,dummy-virt (DT) [ 21.451525] Call trace: [ 21.451553] show_stack+0x20/0x38 (C) [ 21.451612] dump_stack_lvl+0x8c/0xd0 [ 21.451664] print_report+0x118/0x608 [ 21.451712] kasan_report+0xdc/0x128 [ 21.451761] __asan_report_load1_noabort+0x20/0x30 [ 21.451813] kasan_strings+0x95c/0xb00 [ 21.451860] kunit_try_run_case+0x170/0x3f0 [ 21.451910] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.451967] kthread+0x328/0x630 [ 21.452042] ret_from_fork+0x10/0x20 [ 21.452098] [ 21.452123] Allocated by task 259: [ 21.452156] kasan_save_stack+0x3c/0x68 [ 21.452209] kasan_save_track+0x20/0x40 [ 21.452255] kasan_save_alloc_info+0x40/0x58 [ 21.452303] __kasan_kmalloc+0xd4/0xd8 [ 21.452348] __kmalloc_cache_noprof+0x15c/0x3c0 [ 21.452393] kasan_strings+0xc8/0xb00 [ 21.452434] kunit_try_run_case+0x170/0x3f0 [ 21.452478] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.452526] kthread+0x328/0x630 [ 21.452570] ret_from_fork+0x10/0x20 [ 21.452611] [ 21.452635] Freed by task 259: [ 21.452668] kasan_save_stack+0x3c/0x68 [ 21.452711] kasan_save_track+0x20/0x40 [ 21.452755] kasan_save_free_info+0x4c/0x78 [ 21.452799] __kasan_slab_free+0x6c/0x98 [ 21.452842] kfree+0x214/0x3c8 [ 21.452880] kasan_strings+0x24c/0xb00 [ 21.452921] kunit_try_run_case+0x170/0x3f0 [ 21.452965] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.453676] kthread+0x328/0x630 [ 21.453754] ret_from_fork+0x10/0x20 [ 21.453801] [ 21.453854] The buggy address belongs to the object at fff00000c7794c80 [ 21.453854] which belongs to the cache kmalloc-32 of size 32 [ 21.453932] The buggy address is located 16 bytes inside of [ 21.453932] freed 32-byte region [fff00000c7794c80, fff00000c7794ca0) [ 21.454015] [ 21.454045] The buggy address belongs to the physical page: [ 21.454087] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107794 [ 21.454151] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 21.454208] page_type: f5(slab) [ 21.454259] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 21.454321] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 21.454371] page dumped because: kasan: bad access detected [ 21.454410] [ 21.454433] Memory state around the buggy address: [ 21.454489] fff00000c7794b80: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 21.454544] fff00000c7794c00: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 21.454595] >fff00000c7794c80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 21.454640] ^ [ 21.454677] fff00000c7794d00: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 21.454728] fff00000c7794d80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 21.454770] ==================================================================
[ 13.070487] ================================================================== [ 13.070966] BUG: KASAN: slab-use-after-free in kasan_strings+0xcbc/0xe80 [ 13.071326] Read of size 1 at addr ffff8881029e6650 by task kunit_try_catch/276 [ 13.071551] [ 13.071686] CPU: 0 UID: 0 PID: 276 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc6-next-20250513 #1 PREEMPT(voluntary) [ 13.071803] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.071827] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.071850] Call Trace: [ 13.071864] <TASK> [ 13.071880] dump_stack_lvl+0x73/0xb0 [ 13.071908] print_report+0xd1/0x650 [ 13.071930] ? __virt_addr_valid+0x1db/0x2d0 [ 13.071953] ? kasan_strings+0xcbc/0xe80 [ 13.071974] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.071997] ? kasan_strings+0xcbc/0xe80 [ 13.072019] kasan_report+0x141/0x180 [ 13.072042] ? kasan_strings+0xcbc/0xe80 [ 13.072101] __asan_report_load1_noabort+0x18/0x20 [ 13.072122] kasan_strings+0xcbc/0xe80 [ 13.072153] ? trace_hardirqs_on+0x37/0xe0 [ 13.072177] ? __pfx_kasan_strings+0x10/0x10 [ 13.072198] ? finish_task_switch.isra.0+0x153/0x700 [ 13.072220] ? __switch_to+0x47/0xf50 [ 13.072246] ? __schedule+0x10cc/0x2b60 [ 13.072268] ? __pfx_read_tsc+0x10/0x10 [ 13.072289] ? ktime_get_ts64+0x86/0x230 [ 13.072314] kunit_try_run_case+0x1a5/0x480 [ 13.072338] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.072361] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.072382] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.072404] ? __kthread_parkme+0x82/0x180 [ 13.072424] ? preempt_count_sub+0x50/0x80 [ 13.072458] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.072483] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.072505] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.072592] kthread+0x337/0x6f0 [ 13.072635] ? trace_preempt_on+0x20/0xc0 [ 13.072657] ? __pfx_kthread+0x10/0x10 [ 13.072707] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.072728] ? calculate_sigpending+0x7b/0xa0 [ 13.072751] ? __pfx_kthread+0x10/0x10 [ 13.072784] ret_from_fork+0x116/0x1d0 [ 13.072803] ? __pfx_kthread+0x10/0x10 [ 13.072824] ret_from_fork_asm+0x1a/0x30 [ 13.072855] </TASK> [ 13.072866] [ 13.081830] Allocated by task 276: [ 13.082068] kasan_save_stack+0x45/0x70 [ 13.082323] kasan_save_track+0x18/0x40 [ 13.082522] kasan_save_alloc_info+0x3b/0x50 [ 13.082859] __kasan_kmalloc+0xb7/0xc0 [ 13.083007] __kmalloc_cache_noprof+0x189/0x420 [ 13.083159] kasan_strings+0xc0/0xe80 [ 13.083348] kunit_try_run_case+0x1a5/0x480 [ 13.083563] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.083974] kthread+0x337/0x6f0 [ 13.084129] ret_from_fork+0x116/0x1d0 [ 13.084264] ret_from_fork_asm+0x1a/0x30 [ 13.084502] [ 13.084822] Freed by task 276: [ 13.084989] kasan_save_stack+0x45/0x70 [ 13.085185] kasan_save_track+0x18/0x40 [ 13.085380] kasan_save_free_info+0x3f/0x60 [ 13.085708] __kasan_slab_free+0x56/0x70 [ 13.085889] kfree+0x222/0x3f0 [ 13.086005] kasan_strings+0x2aa/0xe80 [ 13.086141] kunit_try_run_case+0x1a5/0x480 [ 13.086358] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.086691] kthread+0x337/0x6f0 [ 13.086913] ret_from_fork+0x116/0x1d0 [ 13.087261] ret_from_fork_asm+0x1a/0x30 [ 13.087465] [ 13.087678] The buggy address belongs to the object at ffff8881029e6640 [ 13.087678] which belongs to the cache kmalloc-32 of size 32 [ 13.088166] The buggy address is located 16 bytes inside of [ 13.088166] freed 32-byte region [ffff8881029e6640, ffff8881029e6660) [ 13.088870] [ 13.088988] The buggy address belongs to the physical page: [ 13.089199] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1029e6 [ 13.089677] flags: 0x200000000000000(node=0|zone=2) [ 13.089846] page_type: f5(slab) [ 13.089969] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 13.090682] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 13.091060] page dumped because: kasan: bad access detected [ 13.091327] [ 13.091457] Memory state around the buggy address: [ 13.091627] ffff8881029e6500: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 13.092144] ffff8881029e6580: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 13.092476] >ffff8881029e6600: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 13.092896] ^ [ 13.093136] ffff8881029e6680: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 13.093539] ffff8881029e6700: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 13.093852] ==================================================================