Date
June 2, 2025, 2:13 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 20.850468] ================================================================== [ 20.850794] BUG: KASAN: slab-use-after-free in kasan_strings+0x838/0x8d8 [ 20.851033] Read of size 1 at addr fff00000c3f46150 by task kunit_try_catch/249 [ 20.851478] [ 20.851678] CPU: 1 UID: 0 PID: 249 Comm: kunit_try_catch Tainted: G B N 6.14.10-rc1 #1 [ 20.851773] Tainted: [B]=BAD_PAGE, [N]=TEST [ 20.851806] Hardware name: linux,dummy-virt (DT) [ 20.851844] Call trace: [ 20.851872] show_stack+0x20/0x38 (C) [ 20.851928] dump_stack_lvl+0x8c/0xd0 [ 20.851981] print_report+0x118/0x608 [ 20.852033] kasan_report+0xdc/0x128 [ 20.852086] __asan_report_load1_noabort+0x20/0x30 [ 20.852141] kasan_strings+0x838/0x8d8 [ 20.852802] kunit_try_run_case+0x170/0x3f0 [ 20.852863] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.852924] kthread+0x318/0x620 [ 20.852975] ret_from_fork+0x10/0x20 [ 20.853033] [ 20.855758] Allocated by task 249: [ 20.855956] kasan_save_stack+0x3c/0x68 [ 20.856933] kasan_save_track+0x20/0x40 [ 20.857338] kasan_save_alloc_info+0x40/0x58 [ 20.857623] __kasan_kmalloc+0xd4/0xd8 [ 20.857819] __kmalloc_cache_noprof+0x16c/0x3c0 [ 20.858199] kasan_strings+0xb0/0x8d8 [ 20.858705] kunit_try_run_case+0x170/0x3f0 [ 20.859183] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.859452] kthread+0x318/0x620 [ 20.859652] ret_from_fork+0x10/0x20 [ 20.859867] [ 20.860006] Freed by task 249: [ 20.860191] kasan_save_stack+0x3c/0x68 [ 20.860400] kasan_save_track+0x20/0x40 [ 20.860613] kasan_save_free_info+0x4c/0x78 [ 20.860833] __kasan_slab_free+0x6c/0x98 [ 20.861042] kfree+0x214/0x3c8 [ 20.861798] kasan_strings+0x124/0x8d8 [ 20.862025] kunit_try_run_case+0x170/0x3f0 [ 20.862641] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.862912] kthread+0x318/0x620 [ 20.863233] ret_from_fork+0x10/0x20 [ 20.863450] [ 20.863631] The buggy address belongs to the object at fff00000c3f46140 [ 20.863631] which belongs to the cache kmalloc-32 of size 32 [ 20.864141] The buggy address is located 16 bytes inside of [ 20.864141] freed 32-byte region [fff00000c3f46140, fff00000c3f46160) [ 20.864590] [ 20.864787] The buggy address belongs to the physical page: [ 20.865178] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103f46 [ 20.865656] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 20.865895] page_type: f5(slab) [ 20.866059] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 20.866905] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 20.867273] page dumped because: kasan: bad access detected [ 20.867544] [ 20.867678] Memory state around the buggy address: [ 20.867909] fff00000c3f46000: fa fb fb fb fc fc fc fc 00 00 07 fc fc fc fc fc [ 20.869180] fff00000c3f46080: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 20.869603] >fff00000c3f46100: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 20.869982] ^ [ 20.871404] fff00000c3f46180: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 20.871831] fff00000c3f46200: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 20.872170] ==================================================================
[ 14.626188] ================================================================== [ 14.626425] BUG: KASAN: slab-use-after-free in kasan_strings+0xa0c/0xb60 [ 14.626819] Read of size 1 at addr ffff888101bf5750 by task kunit_try_catch/267 [ 14.627283] [ 14.627367] CPU: 1 UID: 0 PID: 267 Comm: kunit_try_catch Tainted: G B N 6.14.10-rc1 #1 [ 14.627407] Tainted: [B]=BAD_PAGE, [N]=TEST [ 14.627418] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 14.627439] Call Trace: [ 14.627454] <TASK> [ 14.627469] dump_stack_lvl+0x73/0xb0 [ 14.627493] print_report+0xd1/0x650 [ 14.627513] ? __virt_addr_valid+0x1db/0x2d0 [ 14.627535] ? kasan_strings+0xa0c/0xb60 [ 14.627553] ? kasan_complete_mode_report_info+0x64/0x200 [ 14.627578] ? kasan_strings+0xa0c/0xb60 [ 14.627597] kasan_report+0x140/0x180 [ 14.627619] ? kasan_strings+0xa0c/0xb60 [ 14.627642] __asan_report_load1_noabort+0x18/0x20 [ 14.627665] kasan_strings+0xa0c/0xb60 [ 14.627757] ? __pfx_kasan_strings+0x10/0x10 [ 14.627778] ? __schedule+0xce8/0x2840 [ 14.627801] ? __pfx_read_tsc+0x10/0x10 [ 14.627822] ? ktime_get_ts64+0x86/0x230 [ 14.627847] kunit_try_run_case+0x1a6/0x480 [ 14.627869] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.627889] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 14.627912] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 14.627935] ? __kthread_parkme+0x82/0x160 [ 14.627956] ? preempt_count_sub+0x50/0x80 [ 14.627980] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.628002] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.628039] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 14.628065] kthread+0x324/0x6e0 [ 14.628085] ? trace_preempt_on+0x20/0xc0 [ 14.628107] ? __pfx_kthread+0x10/0x10 [ 14.628152] ? _raw_spin_unlock_irq+0x47/0x80 [ 14.628174] ? calculate_sigpending+0x7b/0xa0 [ 14.628196] ? __pfx_kthread+0x10/0x10 [ 14.628230] ret_from_fork+0x41/0x80 [ 14.628248] ? __pfx_kthread+0x10/0x10 [ 14.628270] ret_from_fork_asm+0x1a/0x30 [ 14.628303] </TASK> [ 14.628313] [ 14.641182] Allocated by task 267: [ 14.641515] kasan_save_stack+0x45/0x70 [ 14.641917] kasan_save_track+0x18/0x40 [ 14.642177] kasan_save_alloc_info+0x3b/0x50 [ 14.642599] __kasan_kmalloc+0xb7/0xc0 [ 14.642999] __kmalloc_cache_noprof+0x18a/0x420 [ 14.643203] kasan_strings+0xb9/0xb60 [ 14.643329] kunit_try_run_case+0x1a6/0x480 [ 14.643466] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.643760] kthread+0x324/0x6e0 [ 14.644089] ret_from_fork+0x41/0x80 [ 14.644418] ret_from_fork_asm+0x1a/0x30 [ 14.644850] [ 14.645012] Freed by task 267: [ 14.645307] kasan_save_stack+0x45/0x70 [ 14.645653] kasan_save_track+0x18/0x40 [ 14.646230] kasan_save_free_info+0x3f/0x60 [ 14.646614] __kasan_slab_free+0x56/0x70 [ 14.646998] kfree+0x224/0x3f0 [ 14.647133] kasan_strings+0x13c/0xb60 [ 14.647266] kunit_try_run_case+0x1a6/0x480 [ 14.647409] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.647597] kthread+0x324/0x6e0 [ 14.647719] ret_from_fork+0x41/0x80 [ 14.647990] ret_from_fork_asm+0x1a/0x30 [ 14.648202] [ 14.648289] The buggy address belongs to the object at ffff888101bf5740 [ 14.648289] which belongs to the cache kmalloc-32 of size 32 [ 14.648916] The buggy address is located 16 bytes inside of [ 14.648916] freed 32-byte region [ffff888101bf5740, ffff888101bf5760) [ 14.649394] [ 14.649465] The buggy address belongs to the physical page: [ 14.649634] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101bf5 [ 14.649986] flags: 0x200000000000000(node=0|zone=2) [ 14.650347] page_type: f5(slab) [ 14.650528] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 14.650832] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 14.651189] page dumped because: kasan: bad access detected [ 14.651443] [ 14.651518] Memory state around the buggy address: [ 14.651885] ffff888101bf5600: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 14.652154] ffff888101bf5680: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 14.652377] >ffff888101bf5700: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 14.652681] ^ [ 14.652970] ffff888101bf5780: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 14.653255] ffff888101bf5800: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 14.653487] ==================================================================