Date
July 5, 2025, 11:11 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.215615] ================================================================== [ 18.215695] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 18.216057] Free of addr fff00000c59fcc20 by task kunit_try_catch/192 [ 18.216168] [ 18.216221] CPU: 0 UID: 0 PID: 192 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 18.216303] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.216638] Hardware name: linux,dummy-virt (DT) [ 18.216790] Call trace: [ 18.216924] show_stack+0x20/0x38 (C) [ 18.217204] dump_stack_lvl+0x8c/0xd0 [ 18.217282] print_report+0x118/0x608 [ 18.217500] kasan_report_invalid_free+0xc0/0xe8 [ 18.217755] check_slab_allocation+0xd4/0x108 [ 18.217902] __kasan_slab_pre_free+0x2c/0x48 [ 18.218102] kfree+0xe8/0x3c8 [ 18.218576] kfree_sensitive+0x3c/0xb0 [ 18.218718] kmalloc_double_kzfree+0x168/0x308 [ 18.218901] kunit_try_run_case+0x170/0x3f0 [ 18.219092] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.219162] kthread+0x328/0x630 [ 18.219363] ret_from_fork+0x10/0x20 [ 18.219563] [ 18.219611] Allocated by task 192: [ 18.219657] kasan_save_stack+0x3c/0x68 [ 18.220063] kasan_save_track+0x20/0x40 [ 18.220470] kasan_save_alloc_info+0x40/0x58 [ 18.220677] __kasan_kmalloc+0xd4/0xd8 [ 18.220778] __kmalloc_cache_noprof+0x16c/0x3c0 [ 18.220861] kmalloc_double_kzfree+0xb8/0x308 [ 18.220902] kunit_try_run_case+0x170/0x3f0 [ 18.221247] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.221361] kthread+0x328/0x630 [ 18.221458] ret_from_fork+0x10/0x20 [ 18.221633] [ 18.221929] Freed by task 192: [ 18.221958] kasan_save_stack+0x3c/0x68 [ 18.222379] kasan_save_track+0x20/0x40 [ 18.222456] kasan_save_free_info+0x4c/0x78 [ 18.222612] __kasan_slab_free+0x6c/0x98 [ 18.222662] kfree+0x214/0x3c8 [ 18.222696] kfree_sensitive+0x80/0xb0 [ 18.222901] kmalloc_double_kzfree+0x11c/0x308 [ 18.222951] kunit_try_run_case+0x170/0x3f0 [ 18.222996] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.223039] kthread+0x328/0x630 [ 18.223070] ret_from_fork+0x10/0x20 [ 18.223107] [ 18.223127] The buggy address belongs to the object at fff00000c59fcc20 [ 18.223127] which belongs to the cache kmalloc-16 of size 16 [ 18.223202] The buggy address is located 0 bytes inside of [ 18.223202] 16-byte region [fff00000c59fcc20, fff00000c59fcc30) [ 18.223599] [ 18.223885] The buggy address belongs to the physical page: [ 18.224043] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1059fc [ 18.224122] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.224349] page_type: f5(slab) [ 18.224484] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 18.224579] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 18.224736] page dumped because: kasan: bad access detected [ 18.224788] [ 18.224807] Memory state around the buggy address: [ 18.225028] fff00000c59fcb00: fa fb fc fc fa fb fc fc 00 04 fc fc fa fb fc fc [ 18.225199] fff00000c59fcb80: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 18.225384] >fff00000c59fcc00: fa fb fc fc fa fb fc fc fc fc fc fc fc fc fc fc [ 18.225717] ^ [ 18.225780] fff00000c59fcc80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.225902] fff00000c59fcd00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.226001] ==================================================================
[ 13.986195] ================================================================== [ 13.987278] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90 [ 13.988157] Free of addr ffff888102509f00 by task kunit_try_catch/210 [ 13.988495] [ 13.988600] CPU: 1 UID: 0 PID: 210 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 13.988650] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.988663] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.988688] Call Trace: [ 13.988704] <TASK> [ 13.988725] dump_stack_lvl+0x73/0xb0 [ 13.988764] print_report+0xd1/0x650 [ 13.988806] ? __virt_addr_valid+0x1db/0x2d0 [ 13.988833] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.988857] ? kfree_sensitive+0x2e/0x90 [ 13.988882] kasan_report_invalid_free+0x10a/0x130 [ 13.988910] ? kfree_sensitive+0x2e/0x90 [ 13.988935] ? kfree_sensitive+0x2e/0x90 [ 13.988957] check_slab_allocation+0x101/0x130 [ 13.988982] __kasan_slab_pre_free+0x28/0x40 [ 13.989008] kfree+0xf0/0x3f0 [ 13.989034] ? add_taint+0x2e/0xa0 [ 13.989055] ? kfree_sensitive+0x2e/0x90 [ 13.989080] kfree_sensitive+0x2e/0x90 [ 13.989102] kmalloc_double_kzfree+0x19c/0x350 [ 13.989128] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 13.989154] ? __schedule+0x10cc/0x2b60 [ 13.989179] ? __pfx_read_tsc+0x10/0x10 [ 13.989203] ? ktime_get_ts64+0x86/0x230 [ 13.989231] kunit_try_run_case+0x1a5/0x480 [ 13.989257] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.989281] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.989308] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.989339] ? __kthread_parkme+0x82/0x180 [ 13.989362] ? preempt_count_sub+0x50/0x80 [ 13.989388] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.989414] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.989439] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.989464] kthread+0x337/0x6f0 [ 13.989485] ? trace_preempt_on+0x20/0xc0 [ 13.989510] ? __pfx_kthread+0x10/0x10 [ 13.989533] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.989556] ? calculate_sigpending+0x7b/0xa0 [ 13.989583] ? __pfx_kthread+0x10/0x10 [ 13.989606] ret_from_fork+0x116/0x1d0 [ 13.989628] ? __pfx_kthread+0x10/0x10 [ 13.989652] ret_from_fork_asm+0x1a/0x30 [ 13.989686] </TASK> [ 13.989699] [ 14.005052] Allocated by task 210: [ 14.005455] kasan_save_stack+0x45/0x70 [ 14.005909] kasan_save_track+0x18/0x40 [ 14.006391] kasan_save_alloc_info+0x3b/0x50 [ 14.006898] __kasan_kmalloc+0xb7/0xc0 [ 14.007511] __kmalloc_cache_noprof+0x189/0x420 [ 14.007996] kmalloc_double_kzfree+0xa9/0x350 [ 14.008560] kunit_try_run_case+0x1a5/0x480 [ 14.009024] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.009296] kthread+0x337/0x6f0 [ 14.009653] ret_from_fork+0x116/0x1d0 [ 14.010051] ret_from_fork_asm+0x1a/0x30 [ 14.010347] [ 14.010531] Freed by task 210: [ 14.010864] kasan_save_stack+0x45/0x70 [ 14.011417] kasan_save_track+0x18/0x40 [ 14.011644] kasan_save_free_info+0x3f/0x60 [ 14.011826] __kasan_slab_free+0x56/0x70 [ 14.011981] kfree+0x222/0x3f0 [ 14.012417] kfree_sensitive+0x67/0x90 [ 14.012625] kmalloc_double_kzfree+0x12b/0x350 [ 14.012869] kunit_try_run_case+0x1a5/0x480 [ 14.013323] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.013720] kthread+0x337/0x6f0 [ 14.013925] ret_from_fork+0x116/0x1d0 [ 14.014322] ret_from_fork_asm+0x1a/0x30 [ 14.014858] [ 14.014994] The buggy address belongs to the object at ffff888102509f00 [ 14.014994] which belongs to the cache kmalloc-16 of size 16 [ 14.015679] The buggy address is located 0 bytes inside of [ 14.015679] 16-byte region [ffff888102509f00, ffff888102509f10) [ 14.016589] [ 14.016875] The buggy address belongs to the physical page: [ 14.017461] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102509 [ 14.018418] flags: 0x200000000000000(node=0|zone=2) [ 14.018685] page_type: f5(slab) [ 14.018878] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 14.019605] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 14.020368] page dumped because: kasan: bad access detected [ 14.020653] [ 14.020761] Memory state around the buggy address: [ 14.021023] ffff888102509e00: 00 02 fc fc 00 02 fc fc 00 02 fc fc 00 02 fc fc [ 14.022329] ffff888102509e80: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 14.022696] >ffff888102509f00: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 14.023041] ^ [ 14.023676] ffff888102509f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 14.024433] ffff88810250a000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 14.024805] ==================================================================