Date
May 23, 2025, 11:07 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 26.731314] ================================================================== [ 26.732356] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_left+0x2ec/0x320 [ 26.732568] Read of size 1 at addr fff00000c5a2a65f by task kunit_try_catch/140 [ 26.732716] [ 26.732809] CPU: 0 UID: 0 PID: 140 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc7 #1 PREEMPT [ 26.733027] Tainted: [B]=BAD_PAGE, [N]=TEST [ 26.733395] Hardware name: linux,dummy-virt (DT) [ 26.733725] Call trace: [ 26.733962] show_stack+0x20/0x38 (C) [ 26.734466] dump_stack_lvl+0x8c/0xd0 [ 26.734746] print_report+0x118/0x608 [ 26.735470] kasan_report+0xdc/0x128 [ 26.735640] __asan_report_load1_noabort+0x20/0x30 [ 26.735790] kmalloc_oob_left+0x2ec/0x320 [ 26.735983] kunit_try_run_case+0x170/0x3f0 [ 26.736478] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 26.737035] kthread+0x328/0x630 [ 26.737192] ret_from_fork+0x10/0x20 [ 26.737516] [ 26.737716] Allocated by task 26: [ 26.737802] kasan_save_stack+0x3c/0x68 [ 26.738230] kasan_save_track+0x20/0x40 [ 26.738494] kasan_save_alloc_info+0x40/0x58 [ 26.738786] __kasan_kmalloc+0xd4/0xd8 [ 26.739039] __kmalloc_node_track_caller_noprof+0x18c/0x4c0 [ 26.739258] kstrdup+0x54/0xc8 [ 26.739500] devtmpfs_work_loop+0x6f8/0xa58 [ 26.739906] devtmpfsd+0x50/0x58 [ 26.740182] kthread+0x328/0x630 [ 26.740546] ret_from_fork+0x10/0x20 [ 26.740932] [ 26.741063] Freed by task 26: [ 26.741272] kasan_save_stack+0x3c/0x68 [ 26.741567] kasan_save_track+0x20/0x40 [ 26.741703] kasan_save_free_info+0x4c/0x78 [ 26.741819] __kasan_slab_free+0x6c/0x98 [ 26.741923] kfree+0x214/0x3c8 [ 26.742025] devtmpfs_work_loop+0x804/0xa58 [ 26.742140] devtmpfsd+0x50/0x58 [ 26.742236] kthread+0x328/0x630 [ 26.742341] ret_from_fork+0x10/0x20 [ 26.742864] [ 26.743132] The buggy address belongs to the object at fff00000c5a2a640 [ 26.743132] which belongs to the cache kmalloc-16 of size 16 [ 26.743715] The buggy address is located 15 bytes to the right of [ 26.743715] allocated 16-byte region [fff00000c5a2a640, fff00000c5a2a650) [ 26.744318] [ 26.744412] The buggy address belongs to the physical page: [ 26.744567] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105a2a [ 26.744939] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 26.745091] page_type: f5(slab) [ 26.745177] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 26.745625] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 26.745993] page dumped because: kasan: bad access detected [ 26.746290] [ 26.746416] Memory state around the buggy address: [ 26.746620] fff00000c5a2a500: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 26.746906] fff00000c5a2a580: fa fb fc fc fa fb fc fc fa fb fc fc 00 01 fc fc [ 26.747290] >fff00000c5a2a600: 00 01 fc fc fa fb fc fc fa fb fc fc 00 07 fc fc [ 26.747826] ^ [ 26.748222] fff00000c5a2a680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.748722] fff00000c5a2a700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.748827] ==================================================================
[ 12.001886] ================================================================== [ 12.003022] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_left+0x361/0x3c0 [ 12.003791] Read of size 1 at addr ffff8881020cbdff by task kunit_try_catch/157 [ 12.004799] [ 12.005050] CPU: 0 UID: 0 PID: 157 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc7 #1 PREEMPT(voluntary) [ 12.005108] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.005121] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.005143] Call Trace: [ 12.005157] <TASK> [ 12.005176] dump_stack_lvl+0x73/0xb0 [ 12.005215] print_report+0xd1/0x650 [ 12.005237] ? __virt_addr_valid+0x1db/0x2d0 [ 12.005260] ? kmalloc_oob_left+0x361/0x3c0 [ 12.005281] ? kasan_complete_mode_report_info+0x2a/0x200 [ 12.005442] ? kmalloc_oob_left+0x361/0x3c0 [ 12.005472] kasan_report+0x141/0x180 [ 12.005496] ? kmalloc_oob_left+0x361/0x3c0 [ 12.005522] __asan_report_load1_noabort+0x18/0x20 [ 12.005542] kmalloc_oob_left+0x361/0x3c0 [ 12.005564] ? __pfx_kmalloc_oob_left+0x10/0x10 [ 12.005587] ? __schedule+0x10cc/0x2b30 [ 12.005609] ? __pfx_read_tsc+0x10/0x10 [ 12.005629] ? ktime_get_ts64+0x86/0x230 [ 12.005656] kunit_try_run_case+0x1a5/0x480 [ 12.005681] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.005703] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.005726] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.005747] ? __kthread_parkme+0x82/0x180 [ 12.005769] ? preempt_count_sub+0x50/0x80 [ 12.005795] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.005817] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.005839] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.005861] kthread+0x337/0x6f0 [ 12.005893] ? trace_preempt_on+0x20/0xc0 [ 12.005917] ? __pfx_kthread+0x10/0x10 [ 12.005935] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.005954] ? calculate_sigpending+0x7b/0xa0 [ 12.005976] ? __pfx_kthread+0x10/0x10 [ 12.005995] ret_from_fork+0x41/0x80 [ 12.006015] ? __pfx_kthread+0x10/0x10 [ 12.006032] ret_from_fork_asm+0x1a/0x30 [ 12.006063] </TASK> [ 12.006074] [ 12.019645] Allocated by task 1: [ 12.019879] kasan_save_stack+0x45/0x70 [ 12.020212] kasan_save_track+0x18/0x40 [ 12.020444] kasan_save_alloc_info+0x3b/0x50 [ 12.020764] __kasan_kmalloc+0xb7/0xc0 [ 12.021259] __kmalloc_node_track_caller_noprof+0x1cb/0x500 [ 12.022110] kvasprintf+0xc5/0x150 [ 12.022268] __kthread_create_on_node+0x18b/0x3a0 [ 12.022455] kthread_create_on_node+0xab/0xe0 [ 12.022850] create_worker+0x3e5/0x7b0 [ 12.023348] alloc_unbound_pwq+0x8ea/0xdb0 [ 12.023787] apply_wqattrs_prepare+0x332/0xd20 [ 12.024161] apply_workqueue_attrs_locked+0x4d/0xa0 [ 12.024344] alloc_workqueue+0xcc7/0x1ad0 [ 12.024602] latency_fsnotify_init+0x1b/0x50 [ 12.024983] do_one_initcall+0xd8/0x370 [ 12.025443] kernel_init_freeable+0x420/0x6f0 [ 12.025837] kernel_init+0x23/0x1e0 [ 12.026285] ret_from_fork+0x41/0x80 [ 12.026579] ret_from_fork_asm+0x1a/0x30 [ 12.026729] [ 12.026803] The buggy address belongs to the object at ffff8881020cbde0 [ 12.026803] which belongs to the cache kmalloc-16 of size 16 [ 12.027927] The buggy address is located 18 bytes to the right of [ 12.027927] allocated 13-byte region [ffff8881020cbde0, ffff8881020cbded) [ 12.029206] [ 12.029302] The buggy address belongs to the physical page: [ 12.029532] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1020cb [ 12.030410] flags: 0x200000000000000(node=0|zone=2) [ 12.030876] page_type: f5(slab) [ 12.031275] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 12.031711] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 12.032089] page dumped because: kasan: bad access detected [ 12.032666] [ 12.032868] Memory state around the buggy address: [ 12.033347] ffff8881020cbc80: 00 03 fc fc fa fb fc fc 00 02 fc fc 00 05 fc fc [ 12.034074] ffff8881020cbd00: 00 02 fc fc 00 02 fc fc 00 02 fc fc 00 02 fc fc [ 12.034356] >ffff8881020cbd80: fa fb fc fc fa fb fc fc fa fb fc fc 00 05 fc fc [ 12.034850] ^ [ 12.035597] ffff8881020cbe00: 00 07 fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.036414] ffff8881020cbe80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.036678] ==================================================================