Date
July 5, 2025, 11:11 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 20.458759] ================================================================== [ 20.458814] BUG: KASAN: slab-use-after-free in kasan_strings+0x95c/0xb00 [ 20.458863] Read of size 1 at addr fff00000c78cc650 by task kunit_try_catch/259 [ 20.459169] [ 20.459278] CPU: 0 UID: 0 PID: 259 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 20.459634] Tainted: [B]=BAD_PAGE, [N]=TEST [ 20.459704] Hardware name: linux,dummy-virt (DT) [ 20.459961] Call trace: [ 20.460079] show_stack+0x20/0x38 (C) [ 20.460135] dump_stack_lvl+0x8c/0xd0 [ 20.460193] print_report+0x118/0x608 [ 20.460241] kasan_report+0xdc/0x128 [ 20.460496] __asan_report_load1_noabort+0x20/0x30 [ 20.460585] kasan_strings+0x95c/0xb00 [ 20.460852] kunit_try_run_case+0x170/0x3f0 [ 20.461108] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.461246] kthread+0x328/0x630 [ 20.461292] ret_from_fork+0x10/0x20 [ 20.461377] [ 20.461412] Allocated by task 259: [ 20.461524] kasan_save_stack+0x3c/0x68 [ 20.461568] kasan_save_track+0x20/0x40 [ 20.461607] kasan_save_alloc_info+0x40/0x58 [ 20.461771] __kasan_kmalloc+0xd4/0xd8 [ 20.461991] __kmalloc_cache_noprof+0x16c/0x3c0 [ 20.462086] kasan_strings+0xc8/0xb00 [ 20.462148] kunit_try_run_case+0x170/0x3f0 [ 20.462198] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.462377] kthread+0x328/0x630 [ 20.462597] ret_from_fork+0x10/0x20 [ 20.462721] [ 20.462757] Freed by task 259: [ 20.462785] kasan_save_stack+0x3c/0x68 [ 20.462827] kasan_save_track+0x20/0x40 [ 20.463142] kasan_save_free_info+0x4c/0x78 [ 20.463214] __kasan_slab_free+0x6c/0x98 [ 20.463415] kfree+0x214/0x3c8 [ 20.463619] kasan_strings+0x24c/0xb00 [ 20.463740] kunit_try_run_case+0x170/0x3f0 [ 20.463830] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.463917] kthread+0x328/0x630 [ 20.463953] ret_from_fork+0x10/0x20 [ 20.464058] [ 20.464083] The buggy address belongs to the object at fff00000c78cc640 [ 20.464083] which belongs to the cache kmalloc-32 of size 32 [ 20.464286] The buggy address is located 16 bytes inside of [ 20.464286] freed 32-byte region [fff00000c78cc640, fff00000c78cc660) [ 20.464353] [ 20.464623] The buggy address belongs to the physical page: [ 20.464703] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1078cc [ 20.464758] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 20.464807] page_type: f5(slab) [ 20.464846] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 20.465229] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 20.465279] page dumped because: kasan: bad access detected [ 20.465484] [ 20.465560] Memory state around the buggy address: [ 20.465597] fff00000c78cc500: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 20.465643] fff00000c78cc580: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 20.465757] >fff00000c78cc600: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 20.465941] ^ [ 20.466061] fff00000c78cc680: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 20.466105] fff00000c78cc700: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 20.466170] ==================================================================
[ 15.740371] ================================================================== [ 15.740801] BUG: KASAN: slab-use-after-free in kasan_strings+0xcbc/0xe80 [ 15.741123] Read of size 1 at addr ffff888102a0d790 by task kunit_try_catch/277 [ 15.741570] [ 15.741709] CPU: 1 UID: 0 PID: 277 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 15.741762] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.741777] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 15.741815] Call Trace: [ 15.741834] <TASK> [ 15.741854] dump_stack_lvl+0x73/0xb0 [ 15.741888] print_report+0xd1/0x650 [ 15.741914] ? __virt_addr_valid+0x1db/0x2d0 [ 15.741940] ? kasan_strings+0xcbc/0xe80 [ 15.741963] ? kasan_complete_mode_report_info+0x64/0x200 [ 15.741988] ? kasan_strings+0xcbc/0xe80 [ 15.742012] kasan_report+0x141/0x180 [ 15.742038] ? kasan_strings+0xcbc/0xe80 [ 15.742066] __asan_report_load1_noabort+0x18/0x20 [ 15.742395] kasan_strings+0xcbc/0xe80 [ 15.742430] ? trace_hardirqs_on+0x37/0xe0 [ 15.742458] ? __pfx_kasan_strings+0x10/0x10 [ 15.742482] ? finish_task_switch.isra.0+0x153/0x700 [ 15.742507] ? __switch_to+0x47/0xf50 [ 15.742537] ? __schedule+0x10cc/0x2b60 [ 15.742564] ? __pfx_read_tsc+0x10/0x10 [ 15.742587] ? ktime_get_ts64+0x86/0x230 [ 15.742614] kunit_try_run_case+0x1a5/0x480 [ 15.742643] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.742668] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 15.742695] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 15.742721] ? __kthread_parkme+0x82/0x180 [ 15.742744] ? preempt_count_sub+0x50/0x80 [ 15.742770] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.742812] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.742838] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 15.742865] kthread+0x337/0x6f0 [ 15.742888] ? trace_preempt_on+0x20/0xc0 [ 15.742913] ? __pfx_kthread+0x10/0x10 [ 15.742936] ? _raw_spin_unlock_irq+0x47/0x80 [ 15.742962] ? calculate_sigpending+0x7b/0xa0 [ 15.742990] ? __pfx_kthread+0x10/0x10 [ 15.743014] ret_from_fork+0x116/0x1d0 [ 15.743036] ? __pfx_kthread+0x10/0x10 [ 15.743059] ret_from_fork_asm+0x1a/0x30 [ 15.743095] </TASK> [ 15.743109] [ 15.752612] Allocated by task 277: [ 15.752854] kasan_save_stack+0x45/0x70 [ 15.753101] kasan_save_track+0x18/0x40 [ 15.753421] kasan_save_alloc_info+0x3b/0x50 [ 15.753641] __kasan_kmalloc+0xb7/0xc0 [ 15.753833] __kmalloc_cache_noprof+0x189/0x420 [ 15.754015] kasan_strings+0xc0/0xe80 [ 15.754190] kunit_try_run_case+0x1a5/0x480 [ 15.754429] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.754726] kthread+0x337/0x6f0 [ 15.755061] ret_from_fork+0x116/0x1d0 [ 15.755297] ret_from_fork_asm+0x1a/0x30 [ 15.755458] [ 15.755540] Freed by task 277: [ 15.755704] kasan_save_stack+0x45/0x70 [ 15.755947] kasan_save_track+0x18/0x40 [ 15.756174] kasan_save_free_info+0x3f/0x60 [ 15.756611] __kasan_slab_free+0x56/0x70 [ 15.757134] kfree+0x222/0x3f0 [ 15.757484] kasan_strings+0x2aa/0xe80 [ 15.757778] kunit_try_run_case+0x1a5/0x480 [ 15.758041] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.758605] kthread+0x337/0x6f0 [ 15.758752] ret_from_fork+0x116/0x1d0 [ 15.758919] ret_from_fork_asm+0x1a/0x30 [ 15.759275] [ 15.759396] The buggy address belongs to the object at ffff888102a0d780 [ 15.759396] which belongs to the cache kmalloc-32 of size 32 [ 15.760036] The buggy address is located 16 bytes inside of [ 15.760036] freed 32-byte region [ffff888102a0d780, ffff888102a0d7a0) [ 15.760745] [ 15.760887] The buggy address belongs to the physical page: [ 15.761293] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a0d [ 15.761591] flags: 0x200000000000000(node=0|zone=2) [ 15.761882] page_type: f5(slab) [ 15.762082] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 15.762412] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 15.762676] page dumped because: kasan: bad access detected [ 15.763064] [ 15.763177] Memory state around the buggy address: [ 15.763501] ffff888102a0d680: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 15.763970] ffff888102a0d700: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 15.764537] >ffff888102a0d780: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 15.764893] ^ [ 15.765076] ffff888102a0d800: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 15.765607] ffff888102a0d880: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 15.765876] ==================================================================