Date
May 12, 2025, 11:48 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 17.001253] ================================================================== [ 17.001970] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 17.002177] Free of addr fff00000c10cc860 by task kunit_try_catch/192 [ 17.002271] [ 17.002330] CPU: 1 UID: 0 PID: 192 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc6-next-20250512 #1 PREEMPT [ 17.002988] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.003339] Hardware name: linux,dummy-virt (DT) [ 17.003419] Call trace: [ 17.003467] show_stack+0x20/0x38 (C) [ 17.003970] dump_stack_lvl+0x8c/0xd0 [ 17.004098] print_report+0x118/0x608 [ 17.004654] kasan_report_invalid_free+0xc0/0xe8 [ 17.004791] check_slab_allocation+0xd4/0x108 [ 17.005109] __kasan_slab_pre_free+0x2c/0x48 [ 17.005462] kfree+0xe8/0x3c8 [ 17.005676] kfree_sensitive+0x3c/0xb0 [ 17.005856] kmalloc_double_kzfree+0x168/0x308 [ 17.005954] kunit_try_run_case+0x170/0x3f0 [ 17.006272] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.006409] kthread+0x328/0x630 [ 17.006638] ret_from_fork+0x10/0x20 [ 17.007218] [ 17.007338] Allocated by task 192: [ 17.007427] kasan_save_stack+0x3c/0x68 [ 17.007662] kasan_save_track+0x20/0x40 [ 17.007835] kasan_save_alloc_info+0x40/0x58 [ 17.007925] __kasan_kmalloc+0xd4/0xd8 [ 17.008009] __kmalloc_cache_noprof+0x15c/0x3c0 [ 17.008103] kmalloc_double_kzfree+0xb8/0x308 [ 17.008190] kunit_try_run_case+0x170/0x3f0 [ 17.008274] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.008629] kthread+0x328/0x630 [ 17.008959] ret_from_fork+0x10/0x20 [ 17.009283] [ 17.009499] Freed by task 192: [ 17.009636] kasan_save_stack+0x3c/0x68 [ 17.009742] kasan_save_track+0x20/0x40 [ 17.010033] kasan_save_free_info+0x4c/0x78 [ 17.010354] __kasan_slab_free+0x6c/0x98 [ 17.010445] kfree+0x214/0x3c8 [ 17.010616] kfree_sensitive+0x80/0xb0 [ 17.010745] kmalloc_double_kzfree+0x11c/0x308 [ 17.011026] kunit_try_run_case+0x170/0x3f0 [ 17.011127] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.011236] kthread+0x328/0x630 [ 17.011313] ret_from_fork+0x10/0x20 [ 17.011950] [ 17.012003] The buggy address belongs to the object at fff00000c10cc860 [ 17.012003] which belongs to the cache kmalloc-16 of size 16 [ 17.012752] The buggy address is located 0 bytes inside of [ 17.012752] 16-byte region [fff00000c10cc860, fff00000c10cc870) [ 17.012939] [ 17.012987] The buggy address belongs to the physical page: [ 17.013597] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1010cc [ 17.014251] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 17.014385] page_type: f5(slab) [ 17.014472] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 17.015273] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 17.015455] page dumped because: kasan: bad access detected [ 17.015615] [ 17.015681] Memory state around the buggy address: [ 17.015765] fff00000c10cc700: fa fb fc fc 00 07 fc fc fa fb fc fc fa fb fc fc [ 17.015884] fff00000c10cc780: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 17.016000] >fff00000c10cc800: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 17.016160] ^ [ 17.016259] fff00000c10cc880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.016376] fff00000c10cc900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.016482] ==================================================================
[ 17.083458] ================================================================== [ 17.084624] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90 [ 17.085113] Free of addr ffff88810229d6c0 by task kunit_try_catch/209 [ 17.085519] [ 17.085784] CPU: 0 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc6-next-20250512 #1 PREEMPT(voluntary) [ 17.085890] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.085917] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 17.085962] Call Trace: [ 17.086002] <TASK> [ 17.086204] dump_stack_lvl+0x73/0xb0 [ 17.086304] print_report+0xd1/0x650 [ 17.086360] ? __virt_addr_valid+0x1db/0x2d0 [ 17.086411] ? kasan_complete_mode_report_info+0x64/0x200 [ 17.086459] ? kfree_sensitive+0x2e/0x90 [ 17.086503] kasan_report_invalid_free+0x10a/0x130 [ 17.086545] ? kfree_sensitive+0x2e/0x90 [ 17.086579] ? kfree_sensitive+0x2e/0x90 [ 17.086601] check_slab_allocation+0x101/0x130 [ 17.086625] __kasan_slab_pre_free+0x28/0x40 [ 17.086647] kfree+0xf0/0x3f0 [ 17.086695] ? kfree_sensitive+0x2e/0x90 [ 17.086725] kfree_sensitive+0x2e/0x90 [ 17.086746] kmalloc_double_kzfree+0x19c/0x350 [ 17.086772] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 17.086798] ? __schedule+0x10cc/0x2b60 [ 17.086821] ? __pfx_read_tsc+0x10/0x10 [ 17.086844] ? ktime_get_ts64+0x86/0x230 [ 17.086870] kunit_try_run_case+0x1a5/0x480 [ 17.086897] ? __pfx_kunit_try_run_case+0x10/0x10 [ 17.086920] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 17.086944] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 17.086967] ? __kthread_parkme+0x82/0x180 [ 17.086996] ? preempt_count_sub+0x50/0x80 [ 17.087033] ? __pfx_kunit_try_run_case+0x10/0x10 [ 17.087097] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 17.087142] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 17.087180] kthread+0x337/0x6f0 [ 17.087211] ? trace_preempt_on+0x20/0xc0 [ 17.087250] ? __pfx_kthread+0x10/0x10 [ 17.087299] ? _raw_spin_unlock_irq+0x47/0x80 [ 17.087331] ? calculate_sigpending+0x7b/0xa0 [ 17.087369] ? __pfx_kthread+0x10/0x10 [ 17.087404] ret_from_fork+0x116/0x1d0 [ 17.087435] ? __pfx_kthread+0x10/0x10 [ 17.087468] ret_from_fork_asm+0x1a/0x30 [ 17.087502] </TASK> [ 17.087516] [ 17.099614] Allocated by task 209: [ 17.099915] kasan_save_stack+0x45/0x70 [ 17.100206] kasan_save_track+0x18/0x40 [ 17.100441] kasan_save_alloc_info+0x3b/0x50 [ 17.100679] __kasan_kmalloc+0xb7/0xc0 [ 17.100870] __kmalloc_cache_noprof+0x189/0x420 [ 17.101078] kmalloc_double_kzfree+0xa9/0x350 [ 17.101404] kunit_try_run_case+0x1a5/0x480 [ 17.101782] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 17.102209] kthread+0x337/0x6f0 [ 17.102515] ret_from_fork+0x116/0x1d0 [ 17.102864] ret_from_fork_asm+0x1a/0x30 [ 17.103252] [ 17.103448] Freed by task 209: [ 17.103783] kasan_save_stack+0x45/0x70 [ 17.104178] kasan_save_track+0x18/0x40 [ 17.104557] kasan_save_free_info+0x3f/0x60 [ 17.104906] __kasan_slab_free+0x56/0x70 [ 17.105230] kfree+0x222/0x3f0 [ 17.105623] kfree_sensitive+0x67/0x90 [ 17.105798] kmalloc_double_kzfree+0x12b/0x350 [ 17.106181] kunit_try_run_case+0x1a5/0x480 [ 17.106395] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 17.106632] kthread+0x337/0x6f0 [ 17.106843] ret_from_fork+0x116/0x1d0 [ 17.107192] ret_from_fork_asm+0x1a/0x30 [ 17.107529] [ 17.107760] The buggy address belongs to the object at ffff88810229d6c0 [ 17.107760] which belongs to the cache kmalloc-16 of size 16 [ 17.109454] The buggy address is located 0 bytes inside of [ 17.109454] 16-byte region [ffff88810229d6c0, ffff88810229d6d0) [ 17.109976] [ 17.111314] The buggy address belongs to the physical page: [ 17.111819] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10229d [ 17.112742] flags: 0x200000000000000(node=0|zone=2) [ 17.112954] page_type: f5(slab) [ 17.113113] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 17.114710] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 17.115020] page dumped because: kasan: bad access detected [ 17.115522] [ 17.115705] Memory state around the buggy address: [ 17.116756] ffff88810229d580: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 17.117680] ffff88810229d600: fa fb fc fc fa fb fc fc 00 05 fc fc fa fb fc fc [ 17.118019] >ffff88810229d680: fa fb fc fc fa fb fc fc fa fb fc fc fc fc fc fc [ 17.118493] ^ [ 17.118879] ffff88810229d700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.119355] ffff88810229d780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.119825] ==================================================================