Date
July 18, 2025, 1:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 33.835055] ================================================================== [ 33.835615] BUG: KASAN: slab-use-after-free in strcmp+0xc0/0xc8 [ 33.835695] Read of size 1 at addr fff00000c907cb50 by task kunit_try_catch/290 [ 33.836178] [ 33.836246] CPU: 0 UID: 0 PID: 290 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6-next-20250718 #1 PREEMPT [ 33.836349] Tainted: [B]=BAD_PAGE, [N]=TEST [ 33.836397] Hardware name: linux,dummy-virt (DT) [ 33.836583] Call trace: [ 33.836650] show_stack+0x20/0x38 (C) [ 33.836708] dump_stack_lvl+0x8c/0xd0 [ 33.836758] print_report+0x118/0x5e8 [ 33.836804] kasan_report+0xdc/0x128 [ 33.836848] __asan_report_load1_noabort+0x20/0x30 [ 33.837396] strcmp+0xc0/0xc8 [ 33.837487] kasan_strings+0x340/0xb00 [ 33.837571] kunit_try_run_case+0x170/0x3f0 [ 33.837746] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.837841] kthread+0x328/0x630 [ 33.837886] ret_from_fork+0x10/0x20 [ 33.838265] [ 33.838330] Allocated by task 290: [ 33.838421] kasan_save_stack+0x3c/0x68 [ 33.838566] kasan_save_track+0x20/0x40 [ 33.838651] kasan_save_alloc_info+0x40/0x58 [ 33.838718] __kasan_kmalloc+0xd4/0xd8 [ 33.838870] __kmalloc_cache_noprof+0x16c/0x3c0 [ 33.838925] kasan_strings+0xc8/0xb00 [ 33.839286] kunit_try_run_case+0x170/0x3f0 [ 33.839373] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.839490] kthread+0x328/0x630 [ 33.839600] ret_from_fork+0x10/0x20 [ 33.839736] [ 33.839779] Freed by task 290: [ 33.839808] kasan_save_stack+0x3c/0x68 [ 33.839860] kasan_save_track+0x20/0x40 [ 33.839904] kasan_save_free_info+0x4c/0x78 [ 33.839944] __kasan_slab_free+0x6c/0x98 [ 33.840303] kfree+0x214/0x3c8 [ 33.840412] kasan_strings+0x24c/0xb00 [ 33.840480] kunit_try_run_case+0x170/0x3f0 [ 33.840825] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.840989] kthread+0x328/0x630 [ 33.841066] ret_from_fork+0x10/0x20 [ 33.841225] [ 33.841278] The buggy address belongs to the object at fff00000c907cb40 [ 33.841278] which belongs to the cache kmalloc-32 of size 32 [ 33.841670] The buggy address is located 16 bytes inside of [ 33.841670] freed 32-byte region [fff00000c907cb40, fff00000c907cb60) [ 33.841854] [ 33.841913] The buggy address belongs to the physical page: [ 33.841997] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10907c [ 33.842112] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 33.842201] page_type: f5(slab) [ 33.842346] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 33.842398] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 33.842689] page dumped because: kasan: bad access detected [ 33.842807] [ 33.842881] Memory state around the buggy address: [ 33.842958] fff00000c907ca00: fa fb fb fb fc fc fc fc 00 00 07 fc fc fc fc fc [ 33.843110] fff00000c907ca80: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 33.843167] >fff00000c907cb00: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 33.843253] ^ [ 33.843508] fff00000c907cb80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 33.843560] fff00000c907cc00: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 33.843784] ==================================================================
[ 26.773667] ================================================================== [ 26.774633] BUG: KASAN: slab-use-after-free in strcmp+0xb0/0xc0 [ 26.774943] Read of size 1 at addr ffff8881053c84d0 by task kunit_try_catch/307 [ 26.775324] [ 26.775501] CPU: 0 UID: 0 PID: 307 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6-next-20250718 #1 PREEMPT(voluntary) [ 26.775557] Tainted: [B]=BAD_PAGE, [N]=TEST [ 26.775570] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 26.775594] Call Trace: [ 26.775607] <TASK> [ 26.775627] dump_stack_lvl+0x73/0xb0 [ 26.775660] print_report+0xd1/0x640 [ 26.775687] ? __virt_addr_valid+0x1db/0x2d0 [ 26.775714] ? strcmp+0xb0/0xc0 [ 26.775732] ? kasan_complete_mode_report_info+0x64/0x200 [ 26.775758] ? strcmp+0xb0/0xc0 [ 26.775776] kasan_report+0x141/0x180 [ 26.775798] ? strcmp+0xb0/0xc0 [ 26.775832] __asan_report_load1_noabort+0x18/0x20 [ 26.775855] strcmp+0xb0/0xc0 [ 26.775875] kasan_strings+0x431/0xe80 [ 26.775895] ? trace_hardirqs_on+0x37/0xe0 [ 26.775921] ? __pfx_kasan_strings+0x10/0x10 [ 26.775941] ? finish_task_switch.isra.0+0x153/0x700 [ 26.775963] ? __switch_to+0x47/0xf80 [ 26.775991] ? __schedule+0x10da/0x2b60 [ 26.776013] ? __pfx_read_tsc+0x10/0x10 [ 26.776035] ? ktime_get_ts64+0x86/0x230 [ 26.776060] kunit_try_run_case+0x1a5/0x480 [ 26.776087] ? __pfx_kunit_try_run_case+0x10/0x10 [ 26.776109] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 26.776142] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 26.776175] ? __kthread_parkme+0x82/0x180 [ 26.776194] ? preempt_count_sub+0x50/0x80 [ 26.776218] ? __pfx_kunit_try_run_case+0x10/0x10 [ 26.776241] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.776263] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 26.776299] kthread+0x337/0x6f0 [ 26.776319] ? trace_preempt_on+0x20/0xc0 [ 26.776340] ? __pfx_kthread+0x10/0x10 [ 26.776360] ? _raw_spin_unlock_irq+0x47/0x80 [ 26.776389] ? calculate_sigpending+0x7b/0xa0 [ 26.776413] ? __pfx_kthread+0x10/0x10 [ 26.776433] ret_from_fork+0x116/0x1d0 [ 26.776452] ? __pfx_kthread+0x10/0x10 [ 26.776471] ret_from_fork_asm+0x1a/0x30 [ 26.776502] </TASK> [ 26.776513] [ 26.784025] Allocated by task 307: [ 26.784156] kasan_save_stack+0x45/0x70 [ 26.784308] kasan_save_track+0x18/0x40 [ 26.784471] kasan_save_alloc_info+0x3b/0x50 [ 26.784673] __kasan_kmalloc+0xb7/0xc0 [ 26.784850] __kmalloc_cache_noprof+0x189/0x420 [ 26.785063] kasan_strings+0xc0/0xe80 [ 26.785241] kunit_try_run_case+0x1a5/0x480 [ 26.785512] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.785851] kthread+0x337/0x6f0 [ 26.785979] ret_from_fork+0x116/0x1d0 [ 26.786209] ret_from_fork_asm+0x1a/0x30 [ 26.786424] [ 26.786503] Freed by task 307: [ 26.786626] kasan_save_stack+0x45/0x70 [ 26.786787] kasan_save_track+0x18/0x40 [ 26.787000] kasan_save_free_info+0x3f/0x60 [ 26.787168] __kasan_slab_free+0x56/0x70 [ 26.787333] kfree+0x222/0x3f0 [ 26.787490] kasan_strings+0x2aa/0xe80 [ 26.787677] kunit_try_run_case+0x1a5/0x480 [ 26.787899] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.788102] kthread+0x337/0x6f0 [ 26.788280] ret_from_fork+0x116/0x1d0 [ 26.788411] ret_from_fork_asm+0x1a/0x30 [ 26.788602] [ 26.788689] The buggy address belongs to the object at ffff8881053c84c0 [ 26.788689] which belongs to the cache kmalloc-32 of size 32 [ 26.789165] The buggy address is located 16 bytes inside of [ 26.789165] freed 32-byte region [ffff8881053c84c0, ffff8881053c84e0) [ 26.789637] [ 26.789718] The buggy address belongs to the physical page: [ 26.789951] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1053c8 [ 26.790590] flags: 0x200000000000000(node=0|zone=2) [ 26.790897] page_type: f5(slab) [ 26.791028] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 26.791309] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 26.791638] page dumped because: kasan: bad access detected [ 26.791980] [ 26.792050] Memory state around the buggy address: [ 26.792202] ffff8881053c8380: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 26.792513] ffff8881053c8400: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 26.792820] >ffff8881053c8480: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 26.793081] ^ [ 26.793295] ffff8881053c8500: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 26.793609] ffff8881053c8580: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 26.793892] ==================================================================