Date
June 17, 2025, 3:39 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 95.907992] ================================================================== [ 95.908941] BUG: KASAN: double-free in kfree+0x74/0x138 [ 95.909901] Free of addr ffff0000c5c52740 by task kunit_try_catch/211 [ 95.911028] [ 95.911611] CPU: 1 PID: 211 Comm: kunit_try_catch Tainted: G B N 6.6.94-rc1 #1 [ 95.912968] Hardware name: linux,dummy-virt (DT) [ 95.913747] Call trace: [ 95.914311] dump_backtrace+0x9c/0x128 [ 95.915198] show_stack+0x20/0x38 [ 95.916322] dump_stack_lvl+0x60/0xb0 [ 95.917161] print_report+0xf8/0x5e8 [ 95.917935] kasan_report_invalid_free+0xc0/0xe8 [ 95.918814] __kasan_slab_free+0x134/0x170 [ 95.919694] __kmem_cache_free+0x178/0x2c8 [ 95.920716] kfree+0x74/0x138 [ 95.921441] kfree_sensitive+0x3c/0xb0 [ 95.922121] kmalloc_double_kzfree+0xc8/0x1d8 [ 95.923103] kunit_try_run_case+0x114/0x298 [ 95.924179] kunit_generic_run_threadfn_adapter+0x38/0x60 [ 95.925052] kthread+0x18c/0x1a8 [ 95.925857] ret_from_fork+0x10/0x20 [ 95.926603] [ 95.927012] Allocated by task 211: [ 95.927628] kasan_save_stack+0x3c/0x68 [ 95.928509] kasan_set_track+0x2c/0x40 [ 95.929395] kasan_save_alloc_info+0x24/0x38 [ 95.930158] __kasan_kmalloc+0xd4/0xd8 [ 95.931100] kmalloc_trace+0x68/0x130 [ 95.931845] kmalloc_double_kzfree+0x9c/0x1d8 [ 95.932930] kunit_try_run_case+0x114/0x298 [ 95.933960] kunit_generic_run_threadfn_adapter+0x38/0x60 [ 95.935280] kthread+0x18c/0x1a8 [ 95.936336] ret_from_fork+0x10/0x20 [ 95.937176] [ 95.937668] Freed by task 211: [ 95.938287] kasan_save_stack+0x3c/0x68 [ 95.939130] kasan_set_track+0x2c/0x40 [ 95.939997] kasan_save_free_info+0x38/0x60 [ 95.940949] __kasan_slab_free+0x100/0x170 [ 95.941644] __kmem_cache_free+0x178/0x2c8 [ 95.942334] kfree+0x74/0x138 [ 95.943098] kfree_sensitive+0x80/0xb0 [ 95.943844] kmalloc_double_kzfree+0xb8/0x1d8 [ 95.945014] kunit_try_run_case+0x114/0x298 [ 95.946070] kunit_generic_run_threadfn_adapter+0x38/0x60 [ 95.947148] kthread+0x18c/0x1a8 [ 95.947746] ret_from_fork+0x10/0x20 [ 95.948579] [ 95.949038] The buggy address belongs to the object at ffff0000c5c52740 [ 95.949038] which belongs to the cache kmalloc-16 of size 16 [ 95.950553] The buggy address is located 0 bytes inside of [ 95.950553] 16-byte region [ffff0000c5c52740, ffff0000c5c52750) [ 95.952196] [ 95.952698] The buggy address belongs to the physical page: [ 95.953684] page:00000000fbf36b17 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105c52 [ 95.955198] flags: 0xbfffc0000000800(slab|node=0|zone=2|lastcpupid=0xffff) [ 95.956459] page_type: 0xffffffff() [ 95.957222] raw: 0bfffc0000000800 ffff0000c00013c0 dead000000000122 0000000000000000 [ 95.958400] raw: 0000000000000000 0000000080800080 00000001ffffffff 0000000000000000 [ 95.959347] page dumped because: kasan: bad access detected [ 95.960068] [ 95.960442] Memory state around the buggy address: [ 95.961311] ffff0000c5c52600: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 95.962560] ffff0000c5c52680: 00 04 fc fc 00 05 fc fc fa fb fc fc fa fb fc fc [ 95.963849] >ffff0000c5c52700: fa fb fc fc fa fb fc fc fa fb fc fc fc fc fc fc [ 95.965103] ^ [ 95.965985] ffff0000c5c52780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 95.967235] ffff0000c5c52800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 95.968372] ==================================================================
[ 36.325561] ================================================================== [ 36.326029] BUG: KASAN: double-free in kfree+0x7c/0x120 [ 36.327505] Free of addr ffff88810214e700 by task kunit_try_catch/226 [ 36.327913] [ 36.328182] CPU: 0 PID: 226 Comm: kunit_try_catch Tainted: G B N 6.6.94-rc1 #1 [ 36.328876] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 36.329583] Call Trace: [ 36.329935] <TASK> [ 36.330107] dump_stack_lvl+0x4e/0x90 [ 36.330892] print_report+0xd2/0x650 [ 36.331170] ? __virt_addr_valid+0x156/0x1e0 [ 36.331622] ? kasan_complete_mode_report_info+0x64/0x200 [ 36.332241] ? kfree+0x7c/0x120 [ 36.332607] kasan_report_invalid_free+0xfd/0x120 [ 36.333244] ? kfree+0x7c/0x120 [ 36.333799] ? kfree+0x7c/0x120 [ 36.334047] ____kasan_slab_free+0x19c/0x1d0 [ 36.334708] ? kfree_sensitive+0x2e/0x90 [ 36.335123] __kasan_slab_free+0x16/0x20 [ 36.335750] __kmem_cache_free+0x190/0x310 [ 36.336059] kfree+0x7c/0x120 [ 36.336687] kfree_sensitive+0x2e/0x90 [ 36.336984] kmalloc_double_kzfree+0xd4/0x1d0 [ 36.337456] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 36.337772] ? __schedule+0x715/0x11a0 [ 36.338041] ? ktime_get_ts64+0x118/0x140 [ 36.338343] kunit_try_run_case+0x120/0x290 [ 36.338625] ? __pfx_kunit_try_run_case+0x10/0x10 [ 36.339668] ? __kasan_check_write+0x18/0x20 [ 36.339975] ? trace_preempt_on+0x20/0xa0 [ 36.340269] ? __kthread_parkme+0x4f/0xd0 [ 36.340555] ? preempt_count_sub+0x50/0x80 [ 36.340838] ? __pfx_kunit_try_run_case+0x10/0x10 [ 36.341187] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 36.341651] kunit_generic_run_threadfn_adapter+0x33/0x50 [ 36.342034] kthread+0x19e/0x1e0 [ 36.342269] ? __pfx_kthread+0x10/0x10 [ 36.342518] ret_from_fork+0x41/0x70 [ 36.342792] ? __pfx_kthread+0x10/0x10 [ 36.343606] ret_from_fork_asm+0x1b/0x30 [ 36.343962] </TASK> [ 36.344121] [ 36.344250] Allocated by task 226: [ 36.344511] kasan_save_stack+0x44/0x70 [ 36.344880] kasan_set_track+0x29/0x40 [ 36.345100] kasan_save_alloc_info+0x22/0x30 [ 36.345404] __kasan_kmalloc+0xb7/0xc0 [ 36.345774] kmalloc_trace+0x4c/0xb0 [ 36.346034] kmalloc_double_kzfree+0x9d/0x1d0 [ 36.346283] kunit_try_run_case+0x120/0x290 [ 36.346586] kunit_generic_run_threadfn_adapter+0x33/0x50 [ 36.347255] kthread+0x19e/0x1e0 [ 36.347660] ret_from_fork+0x41/0x70 [ 36.347912] ret_from_fork_asm+0x1b/0x30 [ 36.348196] [ 36.348315] Freed by task 226: [ 36.348516] kasan_save_stack+0x44/0x70 [ 36.348803] kasan_set_track+0x29/0x40 [ 36.349038] kasan_save_free_info+0x2f/0x50 [ 36.349314] ____kasan_slab_free+0x172/0x1d0 [ 36.349600] __kasan_slab_free+0x16/0x20 [ 36.349904] __kmem_cache_free+0x190/0x310 [ 36.350244] kfree+0x7c/0x120 [ 36.350453] kfree_sensitive+0x67/0x90 [ 36.350731] kmalloc_double_kzfree+0xbd/0x1d0 [ 36.350981] kunit_try_run_case+0x120/0x290 [ 36.351282] kunit_generic_run_threadfn_adapter+0x33/0x50 [ 36.351633] kthread+0x19e/0x1e0 [ 36.351957] ret_from_fork+0x41/0x70 [ 36.352178] ret_from_fork_asm+0x1b/0x30 [ 36.352421] [ 36.352539] The buggy address belongs to the object at ffff88810214e700 [ 36.352539] which belongs to the cache kmalloc-16 of size 16 [ 36.353195] The buggy address is located 0 bytes inside of [ 36.353195] 16-byte region [ffff88810214e700, ffff88810214e710) [ 36.353803] [ 36.353958] The buggy address belongs to the physical page: [ 36.354254] page:(____ptrval____) refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10214e [ 36.354779] flags: 0x200000000000800(slab|node=0|zone=2) [ 36.355066] page_type: 0xffffffff() [ 36.355320] raw: 0200000000000800 ffff8881000413c0 dead000000000122 0000000000000000 [ 36.356253] raw: 0000000000000000 0000000080800080 00000001ffffffff 0000000000000000 [ 36.356828] page dumped because: kasan: bad access detected [ 36.357142] [ 36.357269] Memory state around the buggy address: [ 36.357681] ffff88810214e600: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 36.358120] ffff88810214e680: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 36.358478] >ffff88810214e700: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 36.359064] ^ [ 36.359308] ffff88810214e780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 36.360083] ffff88810214e800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 36.360468] ==================================================================