Date
Nov. 20, 2024, 6:35 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 39.780969] ================================================================== [ 39.781874] BUG: KASAN: slab-use-after-free in strcmp+0xc0/0xc8 [ 39.782925] Read of size 1 at addr fff00000c65a90d0 by task kunit_try_catch/248 [ 39.784557] [ 39.784935] CPU: 0 UID: 0 PID: 248 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241120 #1 [ 39.786137] Tainted: [B]=BAD_PAGE, [N]=TEST [ 39.786690] Hardware name: linux,dummy-virt (DT) [ 39.787340] Call trace: [ 39.787935] show_stack+0x20/0x38 (C) [ 39.788467] dump_stack_lvl+0x8c/0xd0 [ 39.789121] print_report+0x118/0x5e0 [ 39.790078] kasan_report+0xc8/0x118 [ 39.790684] __asan_report_load1_noabort+0x20/0x30 [ 39.791398] strcmp+0xc0/0xc8 [ 39.791891] kasan_strings+0x248/0x8f8 [ 39.792537] kunit_try_run_case+0x14c/0x3d0 [ 39.793169] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 39.794204] kthread+0x24c/0x2d0 [ 39.794789] ret_from_fork+0x10/0x20 [ 39.795313] [ 39.795713] Allocated by task 248: [ 39.796290] kasan_save_stack+0x3c/0x68 [ 39.796889] kasan_save_track+0x20/0x40 [ 39.797867] kasan_save_alloc_info+0x40/0x58 [ 39.798435] __kasan_kmalloc+0xd4/0xd8 [ 39.799066] __kmalloc_cache_noprof+0x15c/0x3c8 [ 39.799677] kasan_strings+0xb4/0x8f8 [ 39.800286] kunit_try_run_case+0x14c/0x3d0 [ 39.800898] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 39.801899] kthread+0x24c/0x2d0 [ 39.802277] ret_from_fork+0x10/0x20 [ 39.802689] [ 39.803068] Freed by task 248: [ 39.803924] kasan_save_stack+0x3c/0x68 [ 39.804499] kasan_save_track+0x20/0x40 [ 39.805895] kasan_save_free_info+0x4c/0x78 [ 39.806533] __kasan_slab_free+0x6c/0x98 [ 39.807106] kfree+0x114/0x3d0 [ 39.807641] kasan_strings+0x128/0x8f8 [ 39.808221] kunit_try_run_case+0x14c/0x3d0 [ 39.808904] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 39.809882] kthread+0x24c/0x2d0 [ 39.810230] ret_from_fork+0x10/0x20 [ 39.810851] [ 39.811245] The buggy address belongs to the object at fff00000c65a90c0 [ 39.811245] which belongs to the cache kmalloc-32 of size 32 [ 39.812489] The buggy address is located 16 bytes inside of [ 39.812489] freed 32-byte region [fff00000c65a90c0, fff00000c65a90e0) [ 39.813828] [ 39.814167] The buggy address belongs to the physical page: [ 39.814852] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1065a9 [ 39.815863] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 39.816538] page_type: f5(slab) [ 39.817070] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 39.818299] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 39.819102] page dumped because: kasan: bad access detected [ 39.819921] [ 39.820286] Memory state around the buggy address: [ 39.820875] fff00000c65a8f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 39.822194] fff00000c65a9000: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 39.823368] >fff00000c65a9080: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 39.823784] ^ [ 39.824088] fff00000c65a9100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 39.824464] fff00000c65a9180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 39.825165] ==================================================================
[ 31.419893] ================================================================== [ 31.422675] BUG: KASAN: slab-use-after-free in strcmp+0xb0/0xc0 [ 31.423849] Read of size 1 at addr ffff8881029f3d50 by task kunit_try_catch/266 [ 31.424220] [ 31.424380] CPU: 1 UID: 0 PID: 266 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241120 #1 [ 31.425746] Tainted: [B]=BAD_PAGE, [N]=TEST [ 31.427345] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 31.427945] Call Trace: [ 31.428383] <TASK> [ 31.429484] dump_stack_lvl+0x73/0xb0 [ 31.431223] print_report+0xd1/0x640 [ 31.432040] ? __virt_addr_valid+0x1db/0x2d0 [ 31.432559] ? kasan_complete_mode_report_info+0x64/0x200 [ 31.433420] kasan_report+0x102/0x140 [ 31.434308] ? strcmp+0xb0/0xc0 [ 31.434908] ? strcmp+0xb0/0xc0 [ 31.435786] __asan_report_load1_noabort+0x18/0x20 [ 31.436357] strcmp+0xb0/0xc0 [ 31.436961] kasan_strings+0x2e9/0xb60 [ 31.437465] ? __pfx_kasan_strings+0x10/0x10 [ 31.438063] ? __schedule+0xc3e/0x2790 [ 31.438519] ? __pfx_read_tsc+0x10/0x10 [ 31.439062] ? ktime_get_ts64+0x84/0x230 [ 31.439472] kunit_try_run_case+0x1b3/0x490 [ 31.440418] ? __pfx_kunit_try_run_case+0x10/0x10 [ 31.440904] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 31.441395] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 31.442528] ? __kthread_parkme+0x82/0x160 [ 31.443066] ? preempt_count_sub+0x50/0x80 [ 31.444087] ? __pfx_kunit_try_run_case+0x10/0x10 [ 31.444966] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 31.446099] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 31.446781] kthread+0x257/0x310 [ 31.447292] ? __pfx_kthread+0x10/0x10 [ 31.447978] ret_from_fork+0x41/0x80 [ 31.448455] ? __pfx_kthread+0x10/0x10 [ 31.448977] ret_from_fork_asm+0x1a/0x30 [ 31.449557] </TASK> [ 31.449899] [ 31.450080] Allocated by task 266: [ 31.450497] kasan_save_stack+0x3d/0x60 [ 31.450898] kasan_save_track+0x18/0x40 [ 31.451280] kasan_save_alloc_info+0x3b/0x50 [ 31.452172] __kasan_kmalloc+0xb7/0xc0 [ 31.452521] __kmalloc_cache_noprof+0x184/0x410 [ 31.453055] kasan_strings+0xb3/0xb60 [ 31.453516] kunit_try_run_case+0x1b3/0x490 [ 31.454017] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 31.454797] kthread+0x257/0x310 [ 31.455356] ret_from_fork+0x41/0x80 [ 31.455678] ret_from_fork_asm+0x1a/0x30 [ 31.456532] [ 31.456788] Freed by task 266: [ 31.457341] kasan_save_stack+0x3d/0x60 [ 31.457745] kasan_save_track+0x18/0x40 [ 31.458328] kasan_save_free_info+0x3f/0x60 [ 31.458760] __kasan_slab_free+0x56/0x70 [ 31.459405] kfree+0x123/0x3f0 [ 31.459723] kasan_strings+0x13a/0xb60 [ 31.460401] kunit_try_run_case+0x1b3/0x490 [ 31.461037] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 31.461893] kthread+0x257/0x310 [ 31.462381] ret_from_fork+0x41/0x80 [ 31.462893] ret_from_fork_asm+0x1a/0x30 [ 31.463415] [ 31.463771] The buggy address belongs to the object at ffff8881029f3d40 [ 31.463771] which belongs to the cache kmalloc-32 of size 32 [ 31.464916] The buggy address is located 16 bytes inside of [ 31.464916] freed 32-byte region [ffff8881029f3d40, ffff8881029f3d60) [ 31.466297] [ 31.466532] The buggy address belongs to the physical page: [ 31.467026] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1029f3 [ 31.468207] flags: 0x200000000000000(node=0|zone=2) [ 31.469103] page_type: f5(slab) [ 31.469502] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 31.470206] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 31.471187] page dumped because: kasan: bad access detected [ 31.472295] [ 31.472719] Memory state around the buggy address: [ 31.473625] ffff8881029f3c00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 31.474760] ffff8881029f3c80: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 31.475469] >ffff8881029f3d00: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 31.476880] ^ [ 31.477237] ffff8881029f3d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.478353] ffff8881029f3e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.480031] ==================================================================