Date
Nov. 28, 2024, 2:36 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 33.703072] ================================================================== [ 33.703800] BUG: KASAN: slab-use-after-free in strlen+0xa8/0xb0 [ 33.704556] Read of size 1 at addr fff00000c4081c10 by task kunit_try_catch/247 [ 33.705717] [ 33.706060] CPU: 1 UID: 0 PID: 247 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241128 #1 [ 33.707072] Tainted: [B]=BAD_PAGE, [N]=TEST [ 33.707667] Hardware name: linux,dummy-virt (DT) [ 33.708294] Call trace: [ 33.708707] show_stack+0x20/0x38 (C) [ 33.709588] dump_stack_lvl+0x8c/0xd0 [ 33.710223] print_report+0x118/0x5e0 [ 33.710818] kasan_report+0xc8/0x118 [ 33.711423] __asan_report_load1_noabort+0x20/0x30 [ 33.712088] strlen+0xa8/0xb0 [ 33.712653] kasan_strings+0x320/0x8f8 [ 33.713473] kunit_try_run_case+0x14c/0x3d0 [ 33.714029] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.714835] kthread+0x24c/0x2d0 [ 33.715385] ret_from_fork+0x10/0x20 [ 33.715890] [ 33.716214] Allocated by task 247: [ 33.716686] kasan_save_stack+0x3c/0x68 [ 33.717845] kasan_save_track+0x20/0x40 [ 33.718506] kasan_save_alloc_info+0x40/0x58 [ 33.719212] __kasan_kmalloc+0xd4/0xd8 [ 33.719688] __kmalloc_cache_noprof+0x15c/0x3c0 [ 33.720302] kasan_strings+0xb4/0x8f8 [ 33.720778] kunit_try_run_case+0x14c/0x3d0 [ 33.721291] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.721976] kthread+0x24c/0x2d0 [ 33.723622] ret_from_fork+0x10/0x20 [ 33.724251] [ 33.724638] Freed by task 247: [ 33.725543] kasan_save_stack+0x3c/0x68 [ 33.726206] kasan_save_track+0x20/0x40 [ 33.726844] kasan_save_free_info+0x4c/0x78 [ 33.727464] __kasan_slab_free+0x6c/0x98 [ 33.728108] kfree+0x114/0x3c8 [ 33.728682] kasan_strings+0x128/0x8f8 [ 33.729697] kunit_try_run_case+0x14c/0x3d0 [ 33.730247] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.731058] kthread+0x24c/0x2d0 [ 33.731581] ret_from_fork+0x10/0x20 [ 33.732289] [ 33.732736] The buggy address belongs to the object at fff00000c4081c00 [ 33.732736] which belongs to the cache kmalloc-32 of size 32 [ 33.734170] The buggy address is located 16 bytes inside of [ 33.734170] freed 32-byte region [fff00000c4081c00, fff00000c4081c20) [ 33.735420] [ 33.735845] The buggy address belongs to the physical page: [ 33.736585] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x104081 [ 33.737779] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 33.738491] page_type: f5(slab) [ 33.738918] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 33.739677] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 33.740640] page dumped because: kasan: bad access detected [ 33.741646] [ 33.741998] Memory state around the buggy address: [ 33.743085] fff00000c4081b00: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 33.744236] fff00000c4081b80: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 33.745334] >fff00000c4081c00: fa fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc [ 33.746141] ^ [ 33.746685] fff00000c4081c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 33.747482] fff00000c4081d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 33.748391] ==================================================================
[ 24.639508] ================================================================== [ 24.640113] BUG: KASAN: slab-use-after-free in strlen+0x8f/0xb0 [ 24.641040] Read of size 1 at addr ffff888102a34190 by task kunit_try_catch/267 [ 24.642149] [ 24.642365] CPU: 0 UID: 0 PID: 267 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241128 #1 [ 24.643536] Tainted: [B]=BAD_PAGE, [N]=TEST [ 24.643998] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 24.644912] Call Trace: [ 24.645203] <TASK> [ 24.645503] dump_stack_lvl+0x73/0xb0 [ 24.645917] print_report+0xd1/0x640 [ 24.646291] ? __virt_addr_valid+0x1db/0x2d0 [ 24.647374] ? kasan_complete_mode_report_info+0x64/0x200 [ 24.648272] kasan_report+0x102/0x140 [ 24.648886] ? strlen+0x8f/0xb0 [ 24.649247] ? strlen+0x8f/0xb0 [ 24.649605] __asan_report_load1_noabort+0x18/0x20 [ 24.649995] strlen+0x8f/0xb0 [ 24.650240] kasan_strings+0x432/0xb60 [ 24.650804] ? __pfx_kasan_strings+0x10/0x10 [ 24.651394] ? __schedule+0xc3e/0x2790 [ 24.651754] ? __pfx_read_tsc+0x10/0x10 [ 24.652057] ? ktime_get_ts64+0x84/0x230 [ 24.652495] kunit_try_run_case+0x1b3/0x490 [ 24.653056] ? __pfx_kunit_try_run_case+0x10/0x10 [ 24.653601] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 24.654005] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 24.654684] ? __kthread_parkme+0x82/0x160 [ 24.654968] ? preempt_count_sub+0x50/0x80 [ 24.655396] ? __pfx_kunit_try_run_case+0x10/0x10 [ 24.655781] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 24.656394] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.656836] kthread+0x257/0x310 [ 24.657324] ? __pfx_kthread+0x10/0x10 [ 24.657695] ret_from_fork+0x41/0x80 [ 24.658184] ? __pfx_kthread+0x10/0x10 [ 24.658623] ret_from_fork_asm+0x1a/0x30 [ 24.659015] </TASK> [ 24.659318] [ 24.659498] Allocated by task 267: [ 24.659925] kasan_save_stack+0x3d/0x60 [ 24.660314] kasan_save_track+0x18/0x40 [ 24.660804] kasan_save_alloc_info+0x3b/0x50 [ 24.661188] __kasan_kmalloc+0xb7/0xc0 [ 24.661657] __kmalloc_cache_noprof+0x184/0x410 [ 24.662168] kasan_strings+0xb3/0xb60 [ 24.662610] kunit_try_run_case+0x1b3/0x490 [ 24.663135] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.663486] kthread+0x257/0x310 [ 24.663905] ret_from_fork+0x41/0x80 [ 24.664389] ret_from_fork_asm+0x1a/0x30 [ 24.664672] [ 24.664903] Freed by task 267: [ 24.665409] kasan_save_stack+0x3d/0x60 [ 24.665803] kasan_save_track+0x18/0x40 [ 24.666274] kasan_save_free_info+0x3f/0x60 [ 24.666588] __kasan_slab_free+0x56/0x70 [ 24.667058] kfree+0x123/0x3f0 [ 24.667506] kasan_strings+0x13a/0xb60 [ 24.667976] kunit_try_run_case+0x1b3/0x490 [ 24.668392] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.668956] kthread+0x257/0x310 [ 24.669373] ret_from_fork+0x41/0x80 [ 24.669669] ret_from_fork_asm+0x1a/0x30 [ 24.670059] [ 24.670309] The buggy address belongs to the object at ffff888102a34180 [ 24.670309] which belongs to the cache kmalloc-32 of size 32 [ 24.671353] The buggy address is located 16 bytes inside of [ 24.671353] freed 32-byte region [ffff888102a34180, ffff888102a341a0) [ 24.672370] [ 24.672550] The buggy address belongs to the physical page: [ 24.672967] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a34 [ 24.673625] flags: 0x200000000000000(node=0|zone=2) [ 24.674236] page_type: f5(slab) [ 24.674645] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 24.675246] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 24.675926] page dumped because: kasan: bad access detected [ 24.676485] [ 24.676700] Memory state around the buggy address: [ 24.677130] ffff888102a34080: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 24.677568] ffff888102a34100: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 24.677977] >ffff888102a34180: fa fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc [ 24.678822] ^ [ 24.679395] ffff888102a34200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.679973] ffff888102a34280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.680785] ==================================================================