Date
July 18, 2025, 11:11 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 15.045228] ================================================================== [ 15.046186] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_left+0x2ec/0x320 [ 15.046417] Read of size 1 at addr fff00000c3ef7d5f by task kunit_try_catch/138 [ 15.046477] [ 15.046511] CPU: 1 UID: 0 PID: 138 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 15.046598] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.046625] Hardware name: linux,dummy-virt (DT) [ 15.046658] Call trace: [ 15.046681] show_stack+0x20/0x38 (C) [ 15.046733] dump_stack_lvl+0x8c/0xd0 [ 15.046971] print_report+0x118/0x5d0 [ 15.047067] kasan_report+0xdc/0x128 [ 15.047240] __asan_report_load1_noabort+0x20/0x30 [ 15.047405] kmalloc_oob_left+0x2ec/0x320 [ 15.047522] kunit_try_run_case+0x170/0x3f0 [ 15.047609] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.047945] kthread+0x328/0x630 [ 15.048028] ret_from_fork+0x10/0x20 [ 15.048128] [ 15.048259] Allocated by task 26: [ 15.048633] kasan_save_stack+0x3c/0x68 [ 15.048695] kasan_save_track+0x20/0x40 [ 15.048758] kasan_save_alloc_info+0x40/0x58 [ 15.048999] __kasan_kmalloc+0xd4/0xd8 [ 15.049202] __kmalloc_node_track_caller_noprof+0x194/0x4b8 [ 15.049395] kstrdup+0x54/0xc8 [ 15.049541] devtmpfs_work_loop+0x6f8/0xa58 [ 15.049591] devtmpfsd+0x50/0x58 [ 15.049915] kthread+0x328/0x630 [ 15.050044] ret_from_fork+0x10/0x20 [ 15.050206] [ 15.050294] Freed by task 26: [ 15.050518] kasan_save_stack+0x3c/0x68 [ 15.050978] kasan_save_track+0x20/0x40 [ 15.051050] kasan_save_free_info+0x4c/0x78 [ 15.051208] __kasan_slab_free+0x6c/0x98 [ 15.051380] kfree+0x214/0x3c8 [ 15.051458] devtmpfs_work_loop+0x804/0xa58 [ 15.051833] devtmpfsd+0x50/0x58 [ 15.051918] kthread+0x328/0x630 [ 15.052022] ret_from_fork+0x10/0x20 [ 15.052134] [ 15.052507] The buggy address belongs to the object at fff00000c3ef7d40 [ 15.052507] which belongs to the cache kmalloc-16 of size 16 [ 15.052614] The buggy address is located 15 bytes to the right of [ 15.052614] allocated 16-byte region [fff00000c3ef7d40, fff00000c3ef7d50) [ 15.052757] [ 15.052855] The buggy address belongs to the physical page: [ 15.052973] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103ef7 [ 15.053047] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 15.053441] page_type: f5(slab) [ 15.053518] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 15.053670] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 15.053765] page dumped because: kasan: bad access detected [ 15.053893] [ 15.053961] Memory state around the buggy address: [ 15.054071] fff00000c3ef7c00: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 15.054114] fff00000c3ef7c80: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 15.054477] >fff00000c3ef7d00: fa fb fc fc fa fb fc fc fa fb fc fc 00 07 fc fc [ 15.054621] ^ [ 15.054669] fff00000c3ef7d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.054750] fff00000c3ef7e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.054892] ==================================================================
[ 11.427598] ================================================================== [ 11.428159] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_left+0x361/0x3c0 [ 11.428468] Read of size 1 at addr ffff8881025c747f by task kunit_try_catch/157 [ 11.428766] [ 11.428880] CPU: 1 UID: 0 PID: 157 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 11.428930] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.428941] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.428963] Call Trace: [ 11.428975] <TASK> [ 11.428993] dump_stack_lvl+0x73/0xb0 [ 11.429023] print_report+0xd1/0x610 [ 11.429044] ? __virt_addr_valid+0x1db/0x2d0 [ 11.429067] ? kmalloc_oob_left+0x361/0x3c0 [ 11.429088] ? kasan_complete_mode_report_info+0x2a/0x200 [ 11.429110] ? kmalloc_oob_left+0x361/0x3c0 [ 11.429131] kasan_report+0x141/0x180 [ 11.429152] ? kmalloc_oob_left+0x361/0x3c0 [ 11.429177] __asan_report_load1_noabort+0x18/0x20 [ 11.429201] kmalloc_oob_left+0x361/0x3c0 [ 11.429222] ? __pfx_kmalloc_oob_left+0x10/0x10 [ 11.429243] ? __schedule+0x10cc/0x2b60 [ 11.429490] ? __pfx_read_tsc+0x10/0x10 [ 11.429533] ? ktime_get_ts64+0x86/0x230 [ 11.429558] kunit_try_run_case+0x1a5/0x480 [ 11.429585] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.429618] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.429642] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.429665] ? __kthread_parkme+0x82/0x180 [ 11.429684] ? preempt_count_sub+0x50/0x80 [ 11.429708] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.429730] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.429753] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.429777] kthread+0x337/0x6f0 [ 11.429795] ? trace_preempt_on+0x20/0xc0 [ 11.429818] ? __pfx_kthread+0x10/0x10 [ 11.429837] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.429858] ? calculate_sigpending+0x7b/0xa0 [ 11.429882] ? __pfx_kthread+0x10/0x10 [ 11.429902] ret_from_fork+0x116/0x1d0 [ 11.429921] ? __pfx_kthread+0x10/0x10 [ 11.429940] ret_from_fork_asm+0x1a/0x30 [ 11.429970] </TASK> [ 11.429980] [ 11.437864] Allocated by task 1: [ 11.438036] kasan_save_stack+0x45/0x70 [ 11.438337] kasan_save_track+0x18/0x40 [ 11.438502] kasan_save_alloc_info+0x3b/0x50 [ 11.438652] __kasan_kmalloc+0xb7/0xc0 [ 11.438783] __kmalloc_node_track_caller_noprof+0x1cb/0x500 [ 11.439130] kstrdup+0x3e/0xa0 [ 11.439306] kstrdup_const+0x2c/0x40 [ 11.439512] __kernfs_new_node+0xa7/0x6d0 [ 11.439715] kernfs_new_node+0x140/0x1e0 [ 11.439885] kernfs_create_dir_ns+0x30/0x140 [ 11.440254] sysfs_create_dir_ns+0x130/0x290 [ 11.440480] kobject_add_internal+0x222/0x9b0 [ 11.440710] kobject_init_and_add+0xf1/0x160 [ 11.440921] sysfs_slab_add+0x19a/0x1f0 [ 11.441115] slab_sysfs_init+0x76/0x110 [ 11.441396] do_one_initcall+0xd8/0x370 [ 11.441613] kernel_init_freeable+0x420/0x6f0 [ 11.441806] kernel_init+0x23/0x1e0 [ 11.442062] ret_from_fork+0x116/0x1d0 [ 11.442246] ret_from_fork_asm+0x1a/0x30 [ 11.442452] [ 11.442572] The buggy address belongs to the object at ffff8881025c7460 [ 11.442572] which belongs to the cache kmalloc-16 of size 16 [ 11.442942] The buggy address is located 19 bytes to the right of [ 11.442942] allocated 12-byte region [ffff8881025c7460, ffff8881025c746c) [ 11.443518] [ 11.443632] The buggy address belongs to the physical page: [ 11.443885] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1025c7 [ 11.444426] flags: 0x200000000000000(node=0|zone=2) [ 11.444677] page_type: f5(slab) [ 11.444844] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 11.445145] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 11.445426] page dumped because: kasan: bad access detected [ 11.445640] [ 11.445731] Memory state around the buggy address: [ 11.445957] ffff8881025c7300: 00 06 fc fc 00 00 fc fc 00 02 fc fc 00 02 fc fc [ 11.446356] ffff8881025c7380: 00 06 fc fc 00 06 fc fc 00 04 fc fc 00 04 fc fc [ 11.446703] >ffff8881025c7400: 00 01 fc fc 00 01 fc fc 00 04 fc fc 00 04 fc fc [ 11.447065] ^ [ 11.447385] ffff8881025c7480: 00 07 fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.447706] ffff8881025c7500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.448174] ==================================================================