Date
June 23, 2025, 7:07 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 33.272816] ================================================================== [ 33.272943] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 33.273072] Free of addr fff00000c56f1320 by task kunit_try_catch/204 [ 33.273170] [ 33.273231] CPU: 1 UID: 0 PID: 204 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc3-next-20250623 #1 PREEMPT [ 33.273422] Tainted: [B]=BAD_PAGE, [N]=TEST [ 33.273489] Hardware name: linux,dummy-virt (DT) [ 33.273561] Call trace: [ 33.273610] show_stack+0x20/0x38 (C) [ 33.273728] dump_stack_lvl+0x8c/0xd0 [ 33.273840] print_report+0x118/0x608 [ 33.273981] kasan_report_invalid_free+0xc0/0xe8 [ 33.275234] check_slab_allocation+0xd4/0x108 [ 33.275374] __kasan_slab_pre_free+0x2c/0x48 [ 33.275811] kfree+0xe8/0x3c8 [ 33.275943] kfree_sensitive+0x3c/0xb0 [ 33.276568] kmalloc_double_kzfree+0x168/0x308 [ 33.276876] kunit_try_run_case+0x170/0x3f0 [ 33.277117] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.277255] kthread+0x328/0x630 [ 33.277394] ret_from_fork+0x10/0x20 [ 33.277653] [ 33.277704] Allocated by task 204: [ 33.277819] kasan_save_stack+0x3c/0x68 [ 33.277918] kasan_save_track+0x20/0x40 [ 33.278010] kasan_save_alloc_info+0x40/0x58 [ 33.278129] __kasan_kmalloc+0xd4/0xd8 [ 33.278377] __kmalloc_cache_noprof+0x16c/0x3c0 [ 33.278479] kmalloc_double_kzfree+0xb8/0x308 [ 33.280357] kunit_try_run_case+0x170/0x3f0 [ 33.280494] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.280618] kthread+0x328/0x630 [ 33.280754] ret_from_fork+0x10/0x20 [ 33.280949] [ 33.280996] Freed by task 204: [ 33.281225] kasan_save_stack+0x3c/0x68 [ 33.281818] kasan_save_track+0x20/0x40 [ 33.281917] kasan_save_free_info+0x4c/0x78 [ 33.282475] __kasan_slab_free+0x6c/0x98 [ 33.282595] kfree+0x214/0x3c8 [ 33.282949] kfree_sensitive+0x80/0xb0 [ 33.283494] kmalloc_double_kzfree+0x11c/0x308 [ 33.283630] kunit_try_run_case+0x170/0x3f0 [ 33.283964] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.284558] kthread+0x328/0x630 [ 33.284653] ret_from_fork+0x10/0x20 [ 33.284946] [ 33.285009] The buggy address belongs to the object at fff00000c56f1320 [ 33.285009] which belongs to the cache kmalloc-16 of size 16 [ 33.285625] The buggy address is located 0 bytes inside of [ 33.285625] 16-byte region [fff00000c56f1320, fff00000c56f1330) [ 33.286571] [ 33.286873] The buggy address belongs to the physical page: [ 33.286950] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1056f1 [ 33.287093] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 33.287204] page_type: f5(slab) [ 33.287293] raw: 0bfffe0000000000 fff00000c0001640 dead000000000100 dead000000000122 [ 33.288878] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 33.289896] page dumped because: kasan: bad access detected [ 33.290626] [ 33.290894] Memory state around the buggy address: [ 33.291022] fff00000c56f1200: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 33.291145] fff00000c56f1280: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 33.291246] >fff00000c56f1300: fa fb fc fc fa fb fc fc fc fc fc fc fc fc fc fc [ 33.292681] ^ [ 33.292815] fff00000c56f1380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 33.293066] fff00000c56f1400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 33.293535] ==================================================================
[ 22.173975] ================================================================== [ 22.174816] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90 [ 22.175848] Free of addr ffff888101bb7f80 by task kunit_try_catch/221 [ 22.176197] [ 22.176331] CPU: 1 UID: 0 PID: 221 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc3-next-20250623 #1 PREEMPT(voluntary) [ 22.176423] Tainted: [B]=BAD_PAGE, [N]=TEST [ 22.176539] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 22.176574] Call Trace: [ 22.176598] <TASK> [ 22.176623] dump_stack_lvl+0x73/0xb0 [ 22.176799] print_report+0xd1/0x650 [ 22.176844] ? __virt_addr_valid+0x1db/0x2d0 [ 22.176878] ? kasan_complete_mode_report_info+0x64/0x200 [ 22.176913] ? kfree_sensitive+0x2e/0x90 [ 22.176951] kasan_report_invalid_free+0x10a/0x130 [ 22.177005] ? kfree_sensitive+0x2e/0x90 [ 22.177047] ? kfree_sensitive+0x2e/0x90 [ 22.177093] check_slab_allocation+0x101/0x130 [ 22.177126] __kasan_slab_pre_free+0x28/0x40 [ 22.177158] kfree+0xf0/0x3f0 [ 22.177192] ? kfree_sensitive+0x2e/0x90 [ 22.177228] kfree_sensitive+0x2e/0x90 [ 22.177263] kmalloc_double_kzfree+0x19c/0x350 [ 22.177300] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 22.177466] ? __schedule+0x10cc/0x2b60 [ 22.177489] ? __pfx_read_tsc+0x10/0x10 [ 22.177508] ? ktime_get_ts64+0x86/0x230 [ 22.177529] kunit_try_run_case+0x1a5/0x480 [ 22.177550] ? __pfx_kunit_try_run_case+0x10/0x10 [ 22.177568] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 22.177586] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 22.177604] ? __kthread_parkme+0x82/0x180 [ 22.177621] ? preempt_count_sub+0x50/0x80 [ 22.177640] ? __pfx_kunit_try_run_case+0x10/0x10 [ 22.177659] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 22.177678] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 22.177698] kthread+0x337/0x6f0 [ 22.177713] ? trace_preempt_on+0x20/0xc0 [ 22.177732] ? __pfx_kthread+0x10/0x10 [ 22.177749] ? _raw_spin_unlock_irq+0x47/0x80 [ 22.177766] ? calculate_sigpending+0x7b/0xa0 [ 22.177785] ? __pfx_kthread+0x10/0x10 [ 22.177802] ret_from_fork+0x116/0x1d0 [ 22.177818] ? __pfx_kthread+0x10/0x10 [ 22.177839] ret_from_fork_asm+0x1a/0x30 [ 22.177871] </TASK> [ 22.177882] [ 22.188092] Allocated by task 221: [ 22.188412] kasan_save_stack+0x45/0x70 [ 22.188855] kasan_save_track+0x18/0x40 [ 22.189254] kasan_save_alloc_info+0x3b/0x50 [ 22.189863] __kasan_kmalloc+0xb7/0xc0 [ 22.190170] __kmalloc_cache_noprof+0x189/0x420 [ 22.190547] kmalloc_double_kzfree+0xa9/0x350 [ 22.190740] kunit_try_run_case+0x1a5/0x480 [ 22.191291] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 22.191829] kthread+0x337/0x6f0 [ 22.192069] ret_from_fork+0x116/0x1d0 [ 22.192331] ret_from_fork_asm+0x1a/0x30 [ 22.192698] [ 22.192855] Freed by task 221: [ 22.193184] kasan_save_stack+0x45/0x70 [ 22.193874] kasan_save_track+0x18/0x40 [ 22.194129] kasan_save_free_info+0x3f/0x60 [ 22.194651] __kasan_slab_free+0x56/0x70 [ 22.195240] kfree+0x222/0x3f0 [ 22.195405] kfree_sensitive+0x67/0x90 [ 22.195552] kmalloc_double_kzfree+0x12b/0x350 [ 22.195829] kunit_try_run_case+0x1a5/0x480 [ 22.196194] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 22.197404] kthread+0x337/0x6f0 [ 22.197868] ret_from_fork+0x116/0x1d0 [ 22.198425] ret_from_fork_asm+0x1a/0x30 [ 22.199007] [ 22.199078] The buggy address belongs to the object at ffff888101bb7f80 [ 22.199078] which belongs to the cache kmalloc-16 of size 16 [ 22.199750] The buggy address is located 0 bytes inside of [ 22.199750] 16-byte region [ffff888101bb7f80, ffff888101bb7f90) [ 22.200852] [ 22.200985] The buggy address belongs to the physical page: [ 22.201173] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101bb7 [ 22.201998] flags: 0x200000000000000(node=0|zone=2) [ 22.202216] page_type: f5(slab) [ 22.202618] raw: 0200000000000000 ffff888100041640 dead000000000100 dead000000000122 [ 22.203314] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 22.203691] page dumped because: kasan: bad access detected [ 22.204019] [ 22.204098] Memory state around the buggy address: [ 22.204420] ffff888101bb7e80: fa fb fc fc 00 00 fc fc fa fb fc fc fa fb fc fc [ 22.204701] ffff888101bb7f00: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 22.205857] >ffff888101bb7f80: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.206331] ^ [ 22.206504] ffff888101bb8000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 22.207057] ffff888101bb8080: 00 fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb [ 22.207638] ==================================================================