Date
Dec. 4, 2024, 3:07 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 35.363796] ================================================================== [ 35.365133] BUG: KASAN: slab-use-after-free in strnlen+0x80/0x88 [ 35.365805] Read of size 1 at addr fff00000c6643a90 by task kunit_try_catch/247 [ 35.367178] [ 35.367652] CPU: 0 UID: 0 PID: 247 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241204 #1 [ 35.368962] Tainted: [B]=BAD_PAGE, [N]=TEST [ 35.369569] Hardware name: linux,dummy-virt (DT) [ 35.370346] Call trace: [ 35.370977] show_stack+0x20/0x38 (C) [ 35.371644] dump_stack_lvl+0x8c/0xd0 [ 35.372286] print_report+0x118/0x5e0 [ 35.372964] kasan_report+0xc8/0x118 [ 35.373599] __asan_report_load1_noabort+0x20/0x30 [ 35.374375] strnlen+0x80/0x88 [ 35.375016] kasan_strings+0x364/0x8d8 [ 35.375675] kunit_try_run_case+0x14c/0x3d0 [ 35.376397] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 35.377282] kthread+0x24c/0x2d0 [ 35.377910] ret_from_fork+0x10/0x20 [ 35.378572] [ 35.378960] Allocated by task 247: [ 35.379648] kasan_save_stack+0x3c/0x68 [ 35.380391] kasan_save_track+0x20/0x40 [ 35.381090] kasan_save_alloc_info+0x40/0x58 [ 35.381864] __kasan_kmalloc+0xd4/0xd8 [ 35.382503] __kmalloc_cache_noprof+0x15c/0x3c0 [ 35.383160] kasan_strings+0xb0/0x8d8 [ 35.383886] kunit_try_run_case+0x14c/0x3d0 [ 35.384688] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 35.385468] kthread+0x24c/0x2d0 [ 35.386052] ret_from_fork+0x10/0x20 [ 35.386998] [ 35.387775] Freed by task 247: [ 35.388898] kasan_save_stack+0x3c/0x68 [ 35.389693] kasan_save_track+0x20/0x40 [ 35.390666] kasan_save_free_info+0x4c/0x78 [ 35.392130] __kasan_slab_free+0x6c/0x98 [ 35.392868] kfree+0x114/0x3c8 [ 35.393571] kasan_strings+0x124/0x8d8 [ 35.394279] kunit_try_run_case+0x14c/0x3d0 [ 35.395236] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 35.395955] kthread+0x24c/0x2d0 [ 35.396438] ret_from_fork+0x10/0x20 [ 35.397062] [ 35.397432] The buggy address belongs to the object at fff00000c6643a80 [ 35.397432] which belongs to the cache kmalloc-32 of size 32 [ 35.398872] The buggy address is located 16 bytes inside of [ 35.398872] freed 32-byte region [fff00000c6643a80, fff00000c6643aa0) [ 35.400185] [ 35.400521] The buggy address belongs to the physical page: [ 35.401356] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106643 [ 35.402397] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 35.403411] page_type: f5(slab) [ 35.403934] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 35.404988] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 35.405889] page dumped because: kasan: bad access detected [ 35.406647] [ 35.407045] Memory state around the buggy address: [ 35.407616] fff00000c6643980: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 35.408613] fff00000c6643a00: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 35.409583] >fff00000c6643a80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 35.410408] ^ [ 35.411063] fff00000c6643b00: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 35.411888] fff00000c6643b80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 35.412735] ==================================================================
[ 26.179475] ================================================================== [ 26.180422] BUG: KASAN: slab-use-after-free in strnlen+0x73/0x80 [ 26.180982] Read of size 1 at addr ffff88810299ded0 by task kunit_try_catch/267 [ 26.181558] [ 26.181820] CPU: 1 UID: 0 PID: 267 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241204 #1 [ 26.182968] Tainted: [B]=BAD_PAGE, [N]=TEST [ 26.183652] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 26.184301] Call Trace: [ 26.184513] <TASK> [ 26.184789] dump_stack_lvl+0x73/0xb0 [ 26.185406] print_report+0xd1/0x640 [ 26.186019] ? __virt_addr_valid+0x1db/0x2d0 [ 26.186784] ? kasan_complete_mode_report_info+0x64/0x200 [ 26.187524] kasan_report+0x102/0x140 [ 26.188297] ? strnlen+0x73/0x80 [ 26.188988] ? strnlen+0x73/0x80 [ 26.189584] __asan_report_load1_noabort+0x18/0x20 [ 26.190183] strnlen+0x73/0x80 [ 26.191133] kasan_strings+0x4c3/0xb60 [ 26.191545] ? __pfx_kasan_strings+0x10/0x10 [ 26.192888] ? __pfx_kasan_strings+0x10/0x10 [ 26.193350] kunit_try_run_case+0x1b3/0x490 [ 26.194234] ? __pfx_kunit_try_run_case+0x10/0x10 [ 26.195426] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 26.196045] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 26.196610] ? __kthread_parkme+0x82/0x160 [ 26.197064] ? preempt_count_sub+0x50/0x80 [ 26.197523] ? __pfx_kunit_try_run_case+0x10/0x10 [ 26.198006] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 26.199699] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.200184] kthread+0x257/0x310 [ 26.200543] ? __pfx_kthread+0x10/0x10 [ 26.201264] ret_from_fork+0x41/0x80 [ 26.202130] ? __pfx_kthread+0x10/0x10 [ 26.202960] ret_from_fork_asm+0x1a/0x30 [ 26.203347] </TASK> [ 26.203742] [ 26.204269] Allocated by task 267: [ 26.204534] kasan_save_stack+0x3d/0x60 [ 26.205591] kasan_save_track+0x18/0x40 [ 26.206413] kasan_save_alloc_info+0x3b/0x50 [ 26.207217] __kasan_kmalloc+0xb7/0xc0 [ 26.207676] __kmalloc_cache_noprof+0x184/0x410 [ 26.208225] kasan_strings+0xb9/0xb60 [ 26.208536] kunit_try_run_case+0x1b3/0x490 [ 26.209023] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.209850] kthread+0x257/0x310 [ 26.210118] ret_from_fork+0x41/0x80 [ 26.210482] ret_from_fork_asm+0x1a/0x30 [ 26.211033] [ 26.211271] Freed by task 267: [ 26.211546] kasan_save_stack+0x3d/0x60 [ 26.211989] kasan_save_track+0x18/0x40 [ 26.212655] kasan_save_free_info+0x3f/0x60 [ 26.213064] __kasan_slab_free+0x56/0x70 [ 26.213381] kfree+0x123/0x3f0 [ 26.213747] kasan_strings+0x13c/0xb60 [ 26.214220] kunit_try_run_case+0x1b3/0x490 [ 26.215157] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.215574] kthread+0x257/0x310 [ 26.216012] ret_from_fork+0x41/0x80 [ 26.216651] ret_from_fork_asm+0x1a/0x30 [ 26.217066] [ 26.217314] The buggy address belongs to the object at ffff88810299dec0 [ 26.217314] which belongs to the cache kmalloc-32 of size 32 [ 26.218167] The buggy address is located 16 bytes inside of [ 26.218167] freed 32-byte region [ffff88810299dec0, ffff88810299dee0) [ 26.219152] [ 26.220466] The buggy address belongs to the physical page: [ 26.221793] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10299d [ 26.222603] flags: 0x200000000000000(node=0|zone=2) [ 26.223079] page_type: f5(slab) [ 26.223954] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 26.225139] raw: 0000000000000000 0000000000400040 00000000f5000000 0000000000000000 [ 26.226484] page dumped because: kasan: bad access detected [ 26.227069] [ 26.227229] Memory state around the buggy address: [ 26.227729] ffff88810299dd80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 26.228789] ffff88810299de00: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 26.229332] >ffff88810299de80: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 26.230582] ^ [ 26.231097] ffff88810299df00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 26.231991] ffff88810299df80: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 26.233320] ==================================================================