Date
May 15, 2025, 10:38 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.236181] ================================================================== [ 18.236252] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 18.236301] Free of addr fff00000c5ccd320 by task kunit_try_catch/192 [ 18.236678] [ 18.236743] CPU: 1 UID: 0 PID: 192 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc6-next-20250515 #1 PREEMPT [ 18.236842] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.236870] Hardware name: linux,dummy-virt (DT) [ 18.236900] Call trace: [ 18.236923] show_stack+0x20/0x38 (C) [ 18.236979] dump_stack_lvl+0x8c/0xd0 [ 18.237036] print_report+0x118/0x608 [ 18.237082] kasan_report_invalid_free+0xc0/0xe8 [ 18.237133] check_slab_allocation+0xd4/0x108 [ 18.237199] __kasan_slab_pre_free+0x2c/0x48 [ 18.237247] kfree+0xe8/0x3c8 [ 18.237289] kfree_sensitive+0x3c/0xb0 [ 18.237337] kmalloc_double_kzfree+0x168/0x308 [ 18.237383] kunit_try_run_case+0x170/0x3f0 [ 18.237434] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.237490] kthread+0x328/0x630 [ 18.237535] ret_from_fork+0x10/0x20 [ 18.237581] [ 18.237599] Allocated by task 192: [ 18.237634] kasan_save_stack+0x3c/0x68 [ 18.237677] kasan_save_track+0x20/0x40 [ 18.237714] kasan_save_alloc_info+0x40/0x58 [ 18.238305] __kasan_kmalloc+0xd4/0xd8 [ 18.238679] __kmalloc_cache_noprof+0x15c/0x3c0 [ 18.238830] kmalloc_double_kzfree+0xb8/0x308 [ 18.239012] kunit_try_run_case+0x170/0x3f0 [ 18.239088] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.239209] kthread+0x328/0x630 [ 18.239341] ret_from_fork+0x10/0x20 [ 18.239380] [ 18.239400] Freed by task 192: [ 18.239722] kasan_save_stack+0x3c/0x68 [ 18.239835] kasan_save_track+0x20/0x40 [ 18.239921] kasan_save_free_info+0x4c/0x78 [ 18.240100] __kasan_slab_free+0x6c/0x98 [ 18.240288] kfree+0x214/0x3c8 [ 18.240356] kfree_sensitive+0x80/0xb0 [ 18.240415] kmalloc_double_kzfree+0x11c/0x308 [ 18.240735] kunit_try_run_case+0x170/0x3f0 [ 18.240865] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.241033] kthread+0x328/0x630 [ 18.241225] ret_from_fork+0x10/0x20 [ 18.241303] [ 18.241351] The buggy address belongs to the object at fff00000c5ccd320 [ 18.241351] which belongs to the cache kmalloc-16 of size 16 [ 18.241706] The buggy address is located 0 bytes inside of [ 18.241706] 16-byte region [fff00000c5ccd320, fff00000c5ccd330) [ 18.241925] [ 18.242041] The buggy address belongs to the physical page: [ 18.242139] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105ccd [ 18.242285] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.242343] page_type: f5(slab) [ 18.242386] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 18.242706] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 18.242794] page dumped because: kasan: bad access detected [ 18.242882] [ 18.243074] Memory state around the buggy address: [ 18.243182] fff00000c5ccd200: fa fb fc fc fa fb fc fc 00 04 fc fc fa fb fc fc [ 18.243309] fff00000c5ccd280: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 18.243402] >fff00000c5ccd300: fa fb fc fc fa fb fc fc fc fc fc fc fc fc fc fc [ 18.243443] ^ [ 18.243810] fff00000c5ccd380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.243955] fff00000c5ccd400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.244125] ==================================================================
[ 14.480234] ================================================================== [ 14.480850] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90 [ 14.481333] Free of addr ffff888102817b60 by task kunit_try_catch/210 [ 14.481732] [ 14.481904] CPU: 0 UID: 0 PID: 210 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc6-next-20250515 #1 PREEMPT(voluntary) [ 14.481998] Tainted: [B]=BAD_PAGE, [N]=TEST [ 14.482020] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 14.482057] Call Trace: [ 14.482083] <TASK> [ 14.482119] dump_stack_lvl+0x73/0xb0 [ 14.482183] print_report+0xd1/0x650 [ 14.482466] ? __virt_addr_valid+0x1db/0x2d0 [ 14.482547] ? kasan_complete_mode_report_info+0x64/0x200 [ 14.482612] ? kfree_sensitive+0x2e/0x90 [ 14.482661] kasan_report_invalid_free+0x10a/0x130 [ 14.482718] ? kfree_sensitive+0x2e/0x90 [ 14.482769] ? kfree_sensitive+0x2e/0x90 [ 14.482812] check_slab_allocation+0x101/0x130 [ 14.482861] __kasan_slab_pre_free+0x28/0x40 [ 14.482903] kfree+0xf0/0x3f0 [ 14.482936] ? kfree_sensitive+0x2e/0x90 [ 14.482982] kfree_sensitive+0x2e/0x90 [ 14.483021] kmalloc_double_kzfree+0x19c/0x350 [ 14.483115] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 14.483166] ? __schedule+0x10cc/0x2b60 [ 14.483210] ? __pfx_read_tsc+0x10/0x10 [ 14.483291] ? ktime_get_ts64+0x86/0x230 [ 14.483335] kunit_try_run_case+0x1a5/0x480 [ 14.483379] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.483423] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 14.483471] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 14.483513] ? __kthread_parkme+0x82/0x180 [ 14.483551] ? preempt_count_sub+0x50/0x80 [ 14.483586] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.483612] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.483636] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 14.483661] kthread+0x337/0x6f0 [ 14.483681] ? trace_preempt_on+0x20/0xc0 [ 14.483706] ? __pfx_kthread+0x10/0x10 [ 14.483727] ? _raw_spin_unlock_irq+0x47/0x80 [ 14.483750] ? calculate_sigpending+0x7b/0xa0 [ 14.483775] ? __pfx_kthread+0x10/0x10 [ 14.483797] ret_from_fork+0x116/0x1d0 [ 14.483816] ? __pfx_kthread+0x10/0x10 [ 14.483837] ret_from_fork_asm+0x1a/0x30 [ 14.483872] </TASK> [ 14.483886] [ 14.492419] Allocated by task 210: [ 14.492684] kasan_save_stack+0x45/0x70 [ 14.493019] kasan_save_track+0x18/0x40 [ 14.493328] kasan_save_alloc_info+0x3b/0x50 [ 14.493645] __kasan_kmalloc+0xb7/0xc0 [ 14.493852] __kmalloc_cache_noprof+0x189/0x420 [ 14.494196] kmalloc_double_kzfree+0xa9/0x350 [ 14.494406] kunit_try_run_case+0x1a5/0x480 [ 14.494747] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.495023] kthread+0x337/0x6f0 [ 14.495290] ret_from_fork+0x116/0x1d0 [ 14.495501] ret_from_fork_asm+0x1a/0x30 [ 14.495686] [ 14.495793] Freed by task 210: [ 14.495940] kasan_save_stack+0x45/0x70 [ 14.496112] kasan_save_track+0x18/0x40 [ 14.496292] kasan_save_free_info+0x3f/0x60 [ 14.496506] __kasan_slab_free+0x56/0x70 [ 14.496806] kfree+0x222/0x3f0 [ 14.497101] kfree_sensitive+0x67/0x90 [ 14.497412] kmalloc_double_kzfree+0x12b/0x350 [ 14.497760] kunit_try_run_case+0x1a5/0x480 [ 14.498091] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.498513] kthread+0x337/0x6f0 [ 14.498798] ret_from_fork+0x116/0x1d0 [ 14.499025] ret_from_fork_asm+0x1a/0x30 [ 14.499213] [ 14.499385] The buggy address belongs to the object at ffff888102817b60 [ 14.499385] which belongs to the cache kmalloc-16 of size 16 [ 14.500054] The buggy address is located 0 bytes inside of [ 14.500054] 16-byte region [ffff888102817b60, ffff888102817b70) [ 14.500600] [ 14.500736] The buggy address belongs to the physical page: [ 14.500966] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102817 [ 14.501247] flags: 0x200000000000000(node=0|zone=2) [ 14.501448] page_type: f5(slab) [ 14.501611] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 14.501863] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 14.502104] page dumped because: kasan: bad access detected [ 14.502371] [ 14.502535] Memory state around the buggy address: [ 14.502903] ffff888102817a00: 00 02 fc fc 00 05 fc fc 00 02 fc fc 00 02 fc fc [ 14.503419] ffff888102817a80: 00 02 fc fc 00 02 fc fc fa fb fc fc fa fb fc fc [ 14.503873] >ffff888102817b00: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 14.504332] ^ [ 14.504760] ffff888102817b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 14.505236] ffff888102817c00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 14.505709] ==================================================================