Date
March 19, 2025, 10:35 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 34.643350] ================================================================== [ 34.643532] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 34.643670] Free of addr fff00000c5d8b060 by task kunit_try_catch/194 [ 34.643810] [ 34.643904] CPU: 1 UID: 0 PID: 194 Comm: kunit_try_catch Tainted: G B N 6.14.0-rc7-next-20250319 #1 PREEMPT [ 34.644237] Tainted: [B]=BAD_PAGE, [N]=TEST [ 34.644329] Hardware name: linux,dummy-virt (DT) [ 34.644734] Call trace: [ 34.645041] show_stack+0x20/0x38 (C) [ 34.645357] dump_stack_lvl+0x8c/0xd0 [ 34.645574] print_report+0x118/0x5f0 [ 34.645757] kasan_report_invalid_free+0xb0/0xd8 [ 34.645919] check_slab_allocation+0xd4/0x108 [ 34.646089] __kasan_slab_pre_free+0x2c/0x48 [ 34.646270] kfree+0xe8/0x3c8 [ 34.646420] kfree_sensitive+0x3c/0xb0 [ 34.646556] kmalloc_double_kzfree+0x168/0x308 [ 34.646716] kunit_try_run_case+0x14c/0x3d0 [ 34.647244] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.647441] kthread+0x318/0x618 [ 34.647589] ret_from_fork+0x10/0x20 [ 34.647743] [ 34.647803] Allocated by task 194: [ 34.647904] kasan_save_stack+0x3c/0x68 [ 34.648074] kasan_save_track+0x20/0x40 [ 34.648185] kasan_save_alloc_info+0x40/0x58 [ 34.648612] __kasan_kmalloc+0xd4/0xd8 [ 34.648892] __kmalloc_cache_noprof+0x15c/0x3c0 [ 34.649218] kmalloc_double_kzfree+0xb8/0x308 [ 34.649382] kunit_try_run_case+0x14c/0x3d0 [ 34.649516] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.649665] kthread+0x318/0x618 [ 34.650246] ret_from_fork+0x10/0x20 [ 34.650745] [ 34.650952] Freed by task 194: [ 34.651178] kasan_save_stack+0x3c/0x68 [ 34.651365] kasan_save_track+0x20/0x40 [ 34.651588] kasan_save_free_info+0x4c/0x78 [ 34.652357] __kasan_slab_free+0x6c/0x98 [ 34.652869] kfree+0x214/0x3c8 [ 34.653391] kfree_sensitive+0x80/0xb0 [ 34.653540] kmalloc_double_kzfree+0x11c/0x308 [ 34.653672] kunit_try_run_case+0x14c/0x3d0 [ 34.654213] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.654827] kthread+0x318/0x618 [ 34.654995] ret_from_fork+0x10/0x20 [ 34.655140] [ 34.655211] The buggy address belongs to the object at fff00000c5d8b060 [ 34.655211] which belongs to the cache kmalloc-16 of size 16 [ 34.655421] The buggy address is located 0 bytes inside of [ 34.655421] 16-byte region [fff00000c5d8b060, fff00000c5d8b070) [ 34.655730] [ 34.655839] The buggy address belongs to the physical page: [ 34.655972] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105d8b [ 34.656161] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 34.656332] page_type: f5(slab) [ 34.656520] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 34.656730] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 34.656907] page dumped because: kasan: bad access detected [ 34.657421] [ 34.657491] Memory state around the buggy address: [ 34.657594] fff00000c5d8af00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 34.657730] fff00000c5d8af80: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc [ 34.658092] >fff00000c5d8b000: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 34.658227] ^ [ 34.658352] fff00000c5d8b080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 34.658559] fff00000c5d8b100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 34.658764] ==================================================================
[ 22.374271] ================================================================== [ 22.375304] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90 [ 22.376434] Free of addr ffff8881025519a0 by task kunit_try_catch/213 [ 22.377483] [ 22.378366] CPU: 1 UID: 0 PID: 213 Comm: kunit_try_catch Tainted: G B N 6.14.0-rc7-next-20250319 #1 PREEMPT(voluntary) [ 22.378489] Tainted: [B]=BAD_PAGE, [N]=TEST [ 22.378522] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 22.378922] Call Trace: [ 22.378951] <TASK> [ 22.378973] dump_stack_lvl+0x73/0xb0 [ 22.379018] print_report+0xd1/0x660 [ 22.379051] ? __virt_addr_valid+0x1db/0x2d0 [ 22.379140] ? kasan_complete_mode_report_info+0x64/0x200 [ 22.379177] ? kfree_sensitive+0x2e/0x90 [ 22.379207] kasan_report_invalid_free+0xce/0x100 [ 22.379243] ? kfree_sensitive+0x2e/0x90 [ 22.379277] ? kfree_sensitive+0x2e/0x90 [ 22.379307] check_slab_allocation+0x101/0x130 [ 22.379340] __kasan_slab_pre_free+0x28/0x40 [ 22.379371] kfree+0xf0/0x3f0 [ 22.379398] ? kfree_sensitive+0x2e/0x90 [ 22.379431] kfree_sensitive+0x2e/0x90 [ 22.379461] kmalloc_double_kzfree+0x19c/0x350 [ 22.379495] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 22.379529] ? __schedule+0xd46/0x29c0 [ 22.379561] ? __pfx_read_tsc+0x10/0x10 [ 22.379600] ? ktime_get_ts64+0x86/0x240 [ 22.379655] kunit_try_run_case+0x1b2/0x490 [ 22.379743] ? __pfx_kunit_try_run_case+0x10/0x10 [ 22.379782] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 22.379816] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 22.379849] ? __kthread_parkme+0x82/0x160 [ 22.379882] ? preempt_count_sub+0x50/0x80 [ 22.379919] ? __pfx_kunit_try_run_case+0x10/0x10 [ 22.379964] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 22.379998] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 22.380030] kthread+0x323/0x710 [ 22.380060] ? trace_preempt_on+0x20/0xc0 [ 22.380092] ? __pfx_kthread+0x10/0x10 [ 22.380145] ? _raw_spin_unlock_irq+0x47/0x80 [ 22.380176] ? calculate_sigpending+0x7b/0xa0 [ 22.380207] ? __pfx_kthread+0x10/0x10 [ 22.380239] ret_from_fork+0x41/0x80 [ 22.380271] ? __pfx_kthread+0x10/0x10 [ 22.380302] ret_from_fork_asm+0x1a/0x30 [ 22.380348] </TASK> [ 22.380364] [ 22.402750] Allocated by task 213: [ 22.403258] kasan_save_stack+0x3d/0x60 [ 22.403672] kasan_save_track+0x18/0x40 [ 22.404328] kasan_save_alloc_info+0x3b/0x50 [ 22.404808] __kasan_kmalloc+0xb7/0xc0 [ 22.405083] __kmalloc_cache_noprof+0x183/0x410 [ 22.405469] kmalloc_double_kzfree+0xa9/0x350 [ 22.406239] kunit_try_run_case+0x1b2/0x490 [ 22.406887] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 22.407687] kthread+0x323/0x710 [ 22.408106] ret_from_fork+0x41/0x80 [ 22.409134] ret_from_fork_asm+0x1a/0x30 [ 22.409441] [ 22.409927] Freed by task 213: [ 22.410308] kasan_save_stack+0x3d/0x60 [ 22.410765] kasan_save_track+0x18/0x40 [ 22.411655] kasan_save_free_info+0x3f/0x60 [ 22.412340] __kasan_slab_free+0x56/0x70 [ 22.413420] kfree+0x222/0x3f0 [ 22.413741] kfree_sensitive+0x67/0x90 [ 22.414167] kmalloc_double_kzfree+0x12b/0x350 [ 22.414606] kunit_try_run_case+0x1b2/0x490 [ 22.415673] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 22.416466] kthread+0x323/0x710 [ 22.416914] ret_from_fork+0x41/0x80 [ 22.417748] ret_from_fork_asm+0x1a/0x30 [ 22.418308] [ 22.418552] The buggy address belongs to the object at ffff8881025519a0 [ 22.418552] which belongs to the cache kmalloc-16 of size 16 [ 22.420086] The buggy address is located 0 bytes inside of [ 22.420086] 16-byte region [ffff8881025519a0, ffff8881025519b0) [ 22.421393] [ 22.421656] The buggy address belongs to the physical page: [ 22.422344] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102551 [ 22.422996] flags: 0x200000000000000(node=0|zone=2) [ 22.423331] page_type: f5(slab) [ 22.423635] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 22.424053] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 22.424822] page dumped because: kasan: bad access detected [ 22.425556] [ 22.426201] Memory state around the buggy address: [ 22.426720] ffff888102551880: 00 04 fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 22.427642] ffff888102551900: 00 05 fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 22.428553] >ffff888102551980: fa fb fc fc fa fb fc fc fc fc fc fc fc fc fc fc [ 22.428956] ^ [ 22.429248] ffff888102551a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.430075] ffff888102551a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.431038] ==================================================================