Date
Nov. 28, 2024, 2:36 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 33.611457] ================================================================== [ 33.612751] BUG: KASAN: slab-use-after-free in strcmp+0xc0/0xc8 [ 33.613678] Read of size 1 at addr fff00000c4081c10 by task kunit_try_catch/247 [ 33.615461] [ 33.615837] CPU: 1 UID: 0 PID: 247 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241128 #1 [ 33.617432] Tainted: [B]=BAD_PAGE, [N]=TEST [ 33.617951] Hardware name: linux,dummy-virt (DT) [ 33.618592] Call trace: [ 33.619009] show_stack+0x20/0x38 (C) [ 33.619609] dump_stack_lvl+0x8c/0xd0 [ 33.620260] print_report+0x118/0x5e0 [ 33.620861] kasan_report+0xc8/0x118 [ 33.621723] __asan_report_load1_noabort+0x20/0x30 [ 33.622239] strcmp+0xc0/0xc8 [ 33.622829] kasan_strings+0x248/0x8f8 [ 33.623403] kunit_try_run_case+0x14c/0x3d0 [ 33.624099] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.624853] kthread+0x24c/0x2d0 [ 33.625459] ret_from_fork+0x10/0x20 [ 33.626241] [ 33.626630] Allocated by task 247: [ 33.627159] kasan_save_stack+0x3c/0x68 [ 33.627809] kasan_save_track+0x20/0x40 [ 33.628458] kasan_save_alloc_info+0x40/0x58 [ 33.629093] __kasan_kmalloc+0xd4/0xd8 [ 33.629891] __kmalloc_cache_noprof+0x15c/0x3c0 [ 33.630520] kasan_strings+0xb4/0x8f8 [ 33.631090] kunit_try_run_case+0x14c/0x3d0 [ 33.631735] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.632466] kthread+0x24c/0x2d0 [ 33.633295] ret_from_fork+0x10/0x20 [ 33.633854] [ 33.634171] Freed by task 247: [ 33.634664] kasan_save_stack+0x3c/0x68 [ 33.635750] kasan_save_track+0x20/0x40 [ 33.636406] kasan_save_free_info+0x4c/0x78 [ 33.636924] __kasan_slab_free+0x6c/0x98 [ 33.637509] kfree+0x114/0x3c8 [ 33.637908] kasan_strings+0x128/0x8f8 [ 33.638676] kunit_try_run_case+0x14c/0x3d0 [ 33.639438] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.640083] kthread+0x24c/0x2d0 [ 33.640542] ret_from_fork+0x10/0x20 [ 33.641343] [ 33.641714] The buggy address belongs to the object at fff00000c4081c00 [ 33.641714] which belongs to the cache kmalloc-32 of size 32 [ 33.642873] The buggy address is located 16 bytes inside of [ 33.642873] freed 32-byte region [fff00000c4081c00, fff00000c4081c20) [ 33.643997] [ 33.644436] The buggy address belongs to the physical page: [ 33.645447] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x104081 [ 33.646309] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 33.647087] page_type: f5(slab) [ 33.647600] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 33.648536] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 33.649510] page dumped because: kasan: bad access detected [ 33.650180] [ 33.650559] Memory state around the buggy address: [ 33.651110] fff00000c4081b00: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 33.651940] fff00000c4081b80: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 33.652745] >fff00000c4081c00: fa fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc [ 33.654272] ^ [ 33.654866] fff00000c4081c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 33.655660] fff00000c4081d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 33.656447] ==================================================================
[ 24.549502] ================================================================== [ 24.549978] BUG: KASAN: slab-use-after-free in strcmp+0xb0/0xc0 [ 24.551121] Read of size 1 at addr ffff888102a34190 by task kunit_try_catch/267 [ 24.551909] [ 24.552240] CPU: 0 UID: 0 PID: 267 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241128 #1 [ 24.553260] Tainted: [B]=BAD_PAGE, [N]=TEST [ 24.553733] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 24.554306] Call Trace: [ 24.554647] <TASK> [ 24.554938] dump_stack_lvl+0x73/0xb0 [ 24.555440] print_report+0xd1/0x640 [ 24.555880] ? __virt_addr_valid+0x1db/0x2d0 [ 24.556271] ? kasan_complete_mode_report_info+0x64/0x200 [ 24.556652] kasan_report+0x102/0x140 [ 24.557127] ? strcmp+0xb0/0xc0 [ 24.557566] ? strcmp+0xb0/0xc0 [ 24.558065] __asan_report_load1_noabort+0x18/0x20 [ 24.558703] strcmp+0xb0/0xc0 [ 24.559187] kasan_strings+0x2e9/0xb60 [ 24.559690] ? __pfx_kasan_strings+0x10/0x10 [ 24.559998] ? __schedule+0xc3e/0x2790 [ 24.560531] ? __pfx_read_tsc+0x10/0x10 [ 24.561028] ? ktime_get_ts64+0x84/0x230 [ 24.561411] kunit_try_run_case+0x1b3/0x490 [ 24.561741] ? __pfx_kunit_try_run_case+0x10/0x10 [ 24.562201] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 24.562760] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 24.563422] ? __kthread_parkme+0x82/0x160 [ 24.563954] ? preempt_count_sub+0x50/0x80 [ 24.564554] ? __pfx_kunit_try_run_case+0x10/0x10 [ 24.564959] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 24.565498] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.566191] kthread+0x257/0x310 [ 24.566561] ? __pfx_kthread+0x10/0x10 [ 24.566955] ret_from_fork+0x41/0x80 [ 24.567292] ? __pfx_kthread+0x10/0x10 [ 24.567744] ret_from_fork_asm+0x1a/0x30 [ 24.568304] </TASK> [ 24.568626] [ 24.568872] Allocated by task 267: [ 24.569316] kasan_save_stack+0x3d/0x60 [ 24.569763] kasan_save_track+0x18/0x40 [ 24.570177] kasan_save_alloc_info+0x3b/0x50 [ 24.570517] __kasan_kmalloc+0xb7/0xc0 [ 24.570917] __kmalloc_cache_noprof+0x184/0x410 [ 24.571270] kasan_strings+0xb3/0xb60 [ 24.571551] kunit_try_run_case+0x1b3/0x490 [ 24.571846] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.572271] kthread+0x257/0x310 [ 24.572751] ret_from_fork+0x41/0x80 [ 24.573297] ret_from_fork_asm+0x1a/0x30 [ 24.573828] [ 24.573997] Freed by task 267: [ 24.574321] kasan_save_stack+0x3d/0x60 [ 24.574783] kasan_save_track+0x18/0x40 [ 24.575389] kasan_save_free_info+0x3f/0x60 [ 24.575800] __kasan_slab_free+0x56/0x70 [ 24.576211] kfree+0x123/0x3f0 [ 24.576602] kasan_strings+0x13a/0xb60 [ 24.576938] kunit_try_run_case+0x1b3/0x490 [ 24.577470] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.577960] kthread+0x257/0x310 [ 24.578349] ret_from_fork+0x41/0x80 [ 24.578738] ret_from_fork_asm+0x1a/0x30 [ 24.579214] [ 24.579411] The buggy address belongs to the object at ffff888102a34180 [ 24.579411] which belongs to the cache kmalloc-32 of size 32 [ 24.580722] The buggy address is located 16 bytes inside of [ 24.580722] freed 32-byte region [ffff888102a34180, ffff888102a341a0) [ 24.581845] [ 24.582199] The buggy address belongs to the physical page: [ 24.583039] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a34 [ 24.584240] flags: 0x200000000000000(node=0|zone=2) [ 24.585011] page_type: f5(slab) [ 24.585638] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 24.586535] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 24.587111] page dumped because: kasan: bad access detected [ 24.587704] [ 24.587856] Memory state around the buggy address: [ 24.588324] ffff888102a34080: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 24.588991] ffff888102a34100: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 24.589645] >ffff888102a34180: fa fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc [ 24.590419] ^ [ 24.590780] ffff888102a34200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.591481] ffff888102a34280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.592030] ==================================================================