Date
July 8, 2025, 7:07 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.961437] ================================================================== [ 18.961542] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_left+0x2ec/0x320 [ 18.961603] Read of size 1 at addr fff00000c564f2bf by task kunit_try_catch/138 [ 18.961769] [ 18.961835] CPU: 1 UID: 0 PID: 138 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 18.961969] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.962176] Hardware name: linux,dummy-virt (DT) [ 18.962221] Call trace: [ 18.962406] show_stack+0x20/0x38 (C) [ 18.962467] dump_stack_lvl+0x8c/0xd0 [ 18.962512] print_report+0x118/0x608 [ 18.962556] kasan_report+0xdc/0x128 [ 18.962599] __asan_report_load1_noabort+0x20/0x30 [ 18.962667] kmalloc_oob_left+0x2ec/0x320 [ 18.962731] kunit_try_run_case+0x170/0x3f0 [ 18.963207] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.963285] kthread+0x328/0x630 [ 18.963328] ret_from_fork+0x10/0x20 [ 18.963453] [ 18.963514] Allocated by task 26: [ 18.963566] kasan_save_stack+0x3c/0x68 [ 18.963769] kasan_save_track+0x20/0x40 [ 18.963813] kasan_save_alloc_info+0x40/0x58 [ 18.963894] __kasan_kmalloc+0xd4/0xd8 [ 18.964134] __kmalloc_node_track_caller_noprof+0x194/0x4b8 [ 18.964197] kstrdup+0x54/0xc8 [ 18.964232] devtmpfs_work_loop+0x6f8/0xa58 [ 18.964278] devtmpfsd+0x50/0x58 [ 18.964312] kthread+0x328/0x630 [ 18.964344] ret_from_fork+0x10/0x20 [ 18.964378] [ 18.964462] Freed by task 26: [ 18.964532] kasan_save_stack+0x3c/0x68 [ 18.964582] kasan_save_track+0x20/0x40 [ 18.964617] kasan_save_free_info+0x4c/0x78 [ 18.964655] __kasan_slab_free+0x6c/0x98 [ 18.964695] kfree+0x214/0x3c8 [ 18.964741] devtmpfs_work_loop+0x804/0xa58 [ 18.964781] devtmpfsd+0x50/0x58 [ 18.964830] kthread+0x328/0x630 [ 18.964864] ret_from_fork+0x10/0x20 [ 18.964909] [ 18.964931] The buggy address belongs to the object at fff00000c564f2a0 [ 18.964931] which belongs to the cache kmalloc-16 of size 16 [ 18.964986] The buggy address is located 15 bytes to the right of [ 18.964986] allocated 16-byte region [fff00000c564f2a0, fff00000c564f2b0) [ 18.965064] [ 18.965092] The buggy address belongs to the physical page: [ 18.965129] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10564f [ 18.965181] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.965228] page_type: f5(slab) [ 18.965265] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 18.965323] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 18.965362] page dumped because: kasan: bad access detected [ 18.965391] [ 18.965409] Memory state around the buggy address: [ 18.965454] fff00000c564f180: 00 05 fc fc fa fb fc fc fa fb fc fc 00 02 fc fc [ 18.965496] fff00000c564f200: fa fb fc fc fa fb fc fc 00 01 fc fc fa fb fc fc [ 18.965553] >fff00000c564f280: fa fb fc fc fa fb fc fc 00 07 fc fc fc fc fc fc [ 18.965596] ^ [ 18.965635] fff00000c564f300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.965688] fff00000c564f380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.965999] ==================================================================
[ 12.123620] ================================================================== [ 12.124593] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_left+0x361/0x3c0 [ 12.125030] Read of size 1 at addr ffff8881022bac3f by task kunit_try_catch/155 [ 12.125727] [ 12.126028] CPU: 0 UID: 0 PID: 155 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 12.126107] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.126119] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.126143] Call Trace: [ 12.126158] <TASK> [ 12.126178] dump_stack_lvl+0x73/0xb0 [ 12.126209] print_report+0xd1/0x650 [ 12.126231] ? __virt_addr_valid+0x1db/0x2d0 [ 12.126254] ? kmalloc_oob_left+0x361/0x3c0 [ 12.126274] ? kasan_complete_mode_report_info+0x2a/0x200 [ 12.126298] ? kmalloc_oob_left+0x361/0x3c0 [ 12.126319] kasan_report+0x141/0x180 [ 12.126339] ? kmalloc_oob_left+0x361/0x3c0 [ 12.126364] __asan_report_load1_noabort+0x18/0x20 [ 12.126387] kmalloc_oob_left+0x361/0x3c0 [ 12.126407] ? __pfx_kmalloc_oob_left+0x10/0x10 [ 12.126428] ? __schedule+0x10cc/0x2b60 [ 12.126449] ? __pfx_read_tsc+0x10/0x10 [ 12.126470] ? ktime_get_ts64+0x86/0x230 [ 12.126495] kunit_try_run_case+0x1a5/0x480 [ 12.126519] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.126540] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.126562] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.126584] ? __kthread_parkme+0x82/0x180 [ 12.126604] ? preempt_count_sub+0x50/0x80 [ 12.126628] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.126650] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.126671] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.126692] kthread+0x337/0x6f0 [ 12.126710] ? trace_preempt_on+0x20/0xc0 [ 12.126733] ? __pfx_kthread+0x10/0x10 [ 12.126752] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.126771] ? calculate_sigpending+0x7b/0xa0 [ 12.126795] ? __pfx_kthread+0x10/0x10 [ 12.126815] ret_from_fork+0x116/0x1d0 [ 12.126832] ? __pfx_kthread+0x10/0x10 [ 12.126851] ret_from_fork_asm+0x1a/0x30 [ 12.126882] </TASK> [ 12.126894] [ 12.138540] Allocated by task 1: [ 12.138801] kasan_save_stack+0x45/0x70 [ 12.139206] kasan_save_track+0x18/0x40 [ 12.139407] kasan_save_alloc_info+0x3b/0x50 [ 12.139630] __kasan_kmalloc+0xb7/0xc0 [ 12.139824] __kmalloc_node_track_caller_noprof+0x1cb/0x500 [ 12.140496] kstrdup+0x3e/0xa0 [ 12.140662] kstrdup_const+0x2c/0x40 [ 12.140996] __kernfs_new_node+0xa7/0x6d0 [ 12.141464] kernfs_new_node+0x140/0x1e0 [ 12.141773] kernfs_create_dir_ns+0x30/0x140 [ 12.142171] sysfs_create_dir_ns+0x130/0x290 [ 12.142400] kobject_add_internal+0x222/0x9b0 [ 12.142755] kobject_init_and_add+0xf1/0x160 [ 12.143091] sysfs_slab_add+0x19a/0x1f0 [ 12.143270] slab_sysfs_init+0x76/0x110 [ 12.143455] do_one_initcall+0xd8/0x370 [ 12.143886] kernel_init_freeable+0x420/0x6f0 [ 12.144086] kernel_init+0x23/0x1e0 [ 12.144576] ret_from_fork+0x116/0x1d0 [ 12.144867] ret_from_fork_asm+0x1a/0x30 [ 12.145425] [ 12.145635] The buggy address belongs to the object at ffff8881022bac20 [ 12.145635] which belongs to the cache kmalloc-16 of size 16 [ 12.146335] The buggy address is located 19 bytes to the right of [ 12.146335] allocated 12-byte region [ffff8881022bac20, ffff8881022bac2c) [ 12.147057] [ 12.147185] The buggy address belongs to the physical page: [ 12.147536] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1022ba [ 12.147886] flags: 0x200000000000000(node=0|zone=2) [ 12.148400] page_type: f5(slab) [ 12.148704] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 12.149168] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 12.149633] page dumped because: kasan: bad access detected [ 12.149951] [ 12.150065] Memory state around the buggy address: [ 12.150368] ffff8881022bab00: 00 02 fc fc 00 02 fc fc 00 06 fc fc 00 06 fc fc [ 12.151095] ffff8881022bab80: 00 04 fc fc 00 04 fc fc 00 01 fc fc 00 01 fc fc [ 12.151635] >ffff8881022bac00: 00 04 fc fc 00 04 fc fc 00 07 fc fc fc fc fc fc [ 12.152002] ^ [ 12.152464] ffff8881022bac80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.152923] ffff8881022bad00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.153471] ==================================================================