Date
March 19, 2025, 10:35 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 33.349940] ================================================================== [ 33.350189] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_left+0x2ec/0x320 [ 33.350340] Read of size 1 at addr fff00000c5c8ef9f by task kunit_try_catch/140 [ 33.350497] [ 33.350587] CPU: 1 UID: 0 PID: 140 Comm: kunit_try_catch Tainted: G B N 6.14.0-rc7-next-20250319 #1 PREEMPT [ 33.350847] Tainted: [B]=BAD_PAGE, [N]=TEST [ 33.350941] Hardware name: linux,dummy-virt (DT) [ 33.351040] Call trace: [ 33.351154] show_stack+0x20/0x38 (C) [ 33.351303] dump_stack_lvl+0x8c/0xd0 [ 33.351562] print_report+0x118/0x5f0 [ 33.351744] kasan_report+0xc8/0x118 [ 33.351988] __asan_report_load1_noabort+0x20/0x30 [ 33.352162] kmalloc_oob_left+0x2ec/0x320 [ 33.352316] kunit_try_run_case+0x14c/0x3d0 [ 33.352531] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.352857] kthread+0x318/0x618 [ 33.353117] ret_from_fork+0x10/0x20 [ 33.353270] [ 33.353362] Allocated by task 26: [ 33.353448] kasan_save_stack+0x3c/0x68 [ 33.353674] kasan_save_track+0x20/0x40 [ 33.353860] kasan_save_alloc_info+0x40/0x58 [ 33.354066] __kasan_kmalloc+0xd4/0xd8 [ 33.354227] __kmalloc_node_track_caller_noprof+0x184/0x4b8 [ 33.354398] kstrdup+0x54/0xc8 [ 33.354532] devtmpfs_work_loop+0x38c/0x5a0 [ 33.354703] devtmpfsd+0x50/0x58 [ 33.354835] kthread+0x318/0x618 [ 33.355025] ret_from_fork+0x10/0x20 [ 33.355154] [ 33.355235] Freed by task 26: [ 33.355465] kasan_save_stack+0x3c/0x68 [ 33.355603] kasan_save_track+0x20/0x40 [ 33.355719] kasan_save_free_info+0x4c/0x78 [ 33.355856] __kasan_slab_free+0x6c/0x98 [ 33.356021] kfree+0x214/0x3c8 [ 33.356194] devtmpfs_work_loop+0x484/0x5a0 [ 33.356340] devtmpfsd+0x50/0x58 [ 33.356472] kthread+0x318/0x618 [ 33.356594] ret_from_fork+0x10/0x20 [ 33.356907] [ 33.357164] The buggy address belongs to the object at fff00000c5c8ef80 [ 33.357164] which belongs to the cache kmalloc-16 of size 16 [ 33.357572] The buggy address is located 15 bytes to the right of [ 33.357572] allocated 16-byte region [fff00000c5c8ef80, fff00000c5c8ef90) [ 33.357770] [ 33.357832] The buggy address belongs to the physical page: [ 33.358708] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105c8e [ 33.358901] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 33.359086] page_type: f5(slab) [ 33.359197] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 33.359356] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 33.359490] page dumped because: kasan: bad access detected [ 33.359590] [ 33.359647] Memory state around the buggy address: [ 33.359744] fff00000c5c8ee80: 00 04 fc fc fa fb fc fc 00 05 fc fc 00 05 fc fc [ 33.359880] fff00000c5c8ef00: 00 00 fc fc 00 06 fc fc 00 06 fc fc 00 00 fc fc [ 33.361000] >fff00000c5c8ef80: fa fb fc fc 00 07 fc fc fc fc fc fc fc fc fc fc [ 33.361348] ^ [ 33.362129] fff00000c5c8f000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.362294] fff00000c5c8f080: fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb [ 33.362408] ==================================================================
[ 20.406017] ================================================================== [ 20.407049] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_left+0x361/0x3c0 [ 20.407686] Read of size 1 at addr ffff888100a7a95f by task kunit_try_catch/159 [ 20.408531] [ 20.408798] CPU: 0 UID: 0 PID: 159 Comm: kunit_try_catch Tainted: G B N 6.14.0-rc7-next-20250319 #1 PREEMPT(voluntary) [ 20.408920] Tainted: [B]=BAD_PAGE, [N]=TEST [ 20.408951] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 20.408982] Call Trace: [ 20.409001] <TASK> [ 20.409022] dump_stack_lvl+0x73/0xb0 [ 20.409067] print_report+0xd1/0x660 [ 20.409140] ? __virt_addr_valid+0x1db/0x2d0 [ 20.409260] ? kasan_complete_mode_report_info+0x2a/0x200 [ 20.409329] kasan_report+0x104/0x140 [ 20.409388] ? kmalloc_oob_left+0x361/0x3c0 [ 20.409453] ? kmalloc_oob_left+0x361/0x3c0 [ 20.409525] __asan_report_load1_noabort+0x18/0x20 [ 20.409561] kmalloc_oob_left+0x361/0x3c0 [ 20.409595] ? __pfx_kmalloc_oob_left+0x10/0x10 [ 20.409629] ? __schedule+0xd46/0x29c0 [ 20.409662] ? __pfx_read_tsc+0x10/0x10 [ 20.409693] ? ktime_get_ts64+0x86/0x240 [ 20.410197] kunit_try_run_case+0x1b2/0x490 [ 20.410293] ? __pfx_kunit_try_run_case+0x10/0x10 [ 20.410341] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 20.410377] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 20.410410] ? __kthread_parkme+0x82/0x160 [ 20.410444] ? preempt_count_sub+0x50/0x80 [ 20.410480] ? __pfx_kunit_try_run_case+0x10/0x10 [ 20.410514] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 20.410547] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 20.410580] kthread+0x323/0x710 [ 20.410610] ? trace_preempt_on+0x20/0xc0 [ 20.410645] ? __pfx_kthread+0x10/0x10 [ 20.410676] ? _raw_spin_unlock_irq+0x47/0x80 [ 20.410726] ? calculate_sigpending+0x7b/0xa0 [ 20.410804] ? __pfx_kthread+0x10/0x10 [ 20.410839] ret_from_fork+0x41/0x80 [ 20.410871] ? __pfx_kthread+0x10/0x10 [ 20.410903] ret_from_fork_asm+0x1a/0x30 [ 20.410952] </TASK> [ 20.410967] [ 20.423426] Allocated by task 11: [ 20.423876] kasan_save_stack+0x3d/0x60 [ 20.424339] kasan_save_track+0x18/0x40 [ 20.424848] kasan_save_alloc_info+0x3b/0x50 [ 20.425322] __kasan_kmalloc+0xb7/0xc0 [ 20.425589] __kmalloc_node_track_caller_noprof+0x1c5/0x500 [ 20.426139] kvasprintf+0xc5/0x170 [ 20.427455] __kthread_create_on_node+0x18b/0x3a0 [ 20.428007] kthread_create_on_node+0xa7/0xe0 [ 20.428480] create_worker+0x3c6/0x7a0 [ 20.428820] worker_thread+0x947/0x12a0 [ 20.431096] kthread+0x323/0x710 [ 20.431446] ret_from_fork+0x41/0x80 [ 20.431945] ret_from_fork_asm+0x1a/0x30 [ 20.432350] [ 20.432562] The buggy address belongs to the object at ffff888100a7a940 [ 20.432562] which belongs to the cache kmalloc-16 of size 16 [ 20.434500] The buggy address is located 19 bytes to the right of [ 20.434500] allocated 12-byte region [ffff888100a7a940, ffff888100a7a94c) [ 20.435448] [ 20.436345] The buggy address belongs to the physical page: [ 20.436772] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x100a7a [ 20.437401] flags: 0x200000000000000(node=0|zone=2) [ 20.438241] page_type: f5(slab) [ 20.438808] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 20.439331] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 20.440341] page dumped because: kasan: bad access detected [ 20.441082] [ 20.441326] Memory state around the buggy address: [ 20.442133] ffff888100a7a800: 00 05 fc fc 00 02 fc fc 00 03 fc fc fa fb fc fc [ 20.442868] ffff888100a7a880: 00 02 fc fc 00 05 fc fc 00 02 fc fc 00 02 fc fc [ 20.443794] >ffff888100a7a900: 00 02 fc fc 00 02 fc fc 00 04 fc fc 00 07 fc fc [ 20.444436] ^ [ 20.445598] ffff888100a7a980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.446126] ffff888100a7aa00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.446751] ==================================================================