Date
May 12, 2025, 11:48 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.280894] ================================================================== [ 16.281016] BUG: KASAN: slab-out-of-bounds in kmalloc_big_oob_right+0x2a4/0x2f0 [ 16.281291] Write of size 1 at addr fff00000c78b1f00 by task kunit_try_catch/144 [ 16.281408] [ 16.281490] CPU: 1 UID: 0 PID: 144 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc6-next-20250512 #1 PREEMPT [ 16.281827] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.282051] Hardware name: linux,dummy-virt (DT) [ 16.282121] Call trace: [ 16.282164] show_stack+0x20/0x38 (C) [ 16.282271] dump_stack_lvl+0x8c/0xd0 [ 16.282464] print_report+0x118/0x608 [ 16.282548] kasan_report+0xdc/0x128 [ 16.282632] __asan_report_store1_noabort+0x20/0x30 [ 16.282908] kmalloc_big_oob_right+0x2a4/0x2f0 [ 16.283036] kunit_try_run_case+0x170/0x3f0 [ 16.283139] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.283237] kthread+0x328/0x630 [ 16.283405] ret_from_fork+0x10/0x20 [ 16.283507] [ 16.283549] Allocated by task 144: [ 16.283610] kasan_save_stack+0x3c/0x68 [ 16.283693] kasan_save_track+0x20/0x40 [ 16.283769] kasan_save_alloc_info+0x40/0x58 [ 16.283848] __kasan_kmalloc+0xd4/0xd8 [ 16.284115] __kmalloc_cache_noprof+0x15c/0x3c0 [ 16.284222] kmalloc_big_oob_right+0xb8/0x2f0 [ 16.284453] kunit_try_run_case+0x170/0x3f0 [ 16.284668] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.284756] kthread+0x328/0x630 [ 16.284829] ret_from_fork+0x10/0x20 [ 16.284987] [ 16.285132] The buggy address belongs to the object at fff00000c78b0000 [ 16.285132] which belongs to the cache kmalloc-8k of size 8192 [ 16.285253] The buggy address is located 0 bytes to the right of [ 16.285253] allocated 7936-byte region [fff00000c78b0000, fff00000c78b1f00) [ 16.285708] [ 16.285786] The buggy address belongs to the physical page: [ 16.285867] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1078b0 [ 16.286021] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 16.286082] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 16.286185] page_type: f5(slab) [ 16.286294] raw: 0bfffe0000000040 fff00000c0002280 dead000000000122 0000000000000000 [ 16.286439] raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 16.286587] head: 0bfffe0000000040 fff00000c0002280 dead000000000122 0000000000000000 [ 16.286728] head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 16.286874] head: 0bfffe0000000003 ffffc1ffc31e2c01 00000000ffffffff 00000000ffffffff [ 16.286980] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 [ 16.287109] page dumped because: kasan: bad access detected [ 16.287199] [ 16.287253] Memory state around the buggy address: [ 16.287335] fff00000c78b1e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 16.287409] fff00000c78b1e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 16.287478] >fff00000c78b1f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.287544] ^ [ 16.287597] fff00000c78b1f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.287706] fff00000c78b2000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.287815] ==================================================================
[ 15.770510] ================================================================== [ 15.772311] BUG: KASAN: slab-out-of-bounds in kmalloc_big_oob_right+0x316/0x370 [ 15.774469] Write of size 1 at addr ffff888103b79f00 by task kunit_try_catch/161 [ 15.775534] [ 15.775779] CPU: 1 UID: 0 PID: 161 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc6-next-20250512 #1 PREEMPT(voluntary) [ 15.775880] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.775903] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 15.775942] Call Trace: [ 15.775970] <TASK> [ 15.776006] dump_stack_lvl+0x73/0xb0 [ 15.776074] print_report+0xd1/0x650 [ 15.776115] ? __virt_addr_valid+0x1db/0x2d0 [ 15.776177] ? kmalloc_big_oob_right+0x316/0x370 [ 15.776218] ? kasan_complete_mode_report_info+0x2a/0x200 [ 15.776281] ? kmalloc_big_oob_right+0x316/0x370 [ 15.776322] kasan_report+0x141/0x180 [ 15.776358] ? kmalloc_big_oob_right+0x316/0x370 [ 15.776406] __asan_report_store1_noabort+0x1b/0x30 [ 15.776446] kmalloc_big_oob_right+0x316/0x370 [ 15.776487] ? __pfx_kmalloc_big_oob_right+0x10/0x10 [ 15.776525] ? __schedule+0x10cc/0x2b60 [ 15.776565] ? __pfx_read_tsc+0x10/0x10 [ 15.776606] ? ktime_get_ts64+0x86/0x230 [ 15.776653] kunit_try_run_case+0x1a5/0x480 [ 15.776702] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.776744] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 15.776789] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 15.776831] ? __kthread_parkme+0x82/0x180 [ 15.776867] ? preempt_count_sub+0x50/0x80 [ 15.776910] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.776950] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.776988] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 15.777026] kthread+0x337/0x6f0 [ 15.777060] ? trace_preempt_on+0x20/0xc0 [ 15.777101] ? __pfx_kthread+0x10/0x10 [ 15.777134] ? _raw_spin_unlock_irq+0x47/0x80 [ 15.777168] ? calculate_sigpending+0x7b/0xa0 [ 15.777212] ? __pfx_kthread+0x10/0x10 [ 15.777249] ret_from_fork+0x116/0x1d0 [ 15.778592] ? __pfx_kthread+0x10/0x10 [ 15.778640] ret_from_fork_asm+0x1a/0x30 [ 15.778736] </TASK> [ 15.778762] [ 15.795840] Allocated by task 161: [ 15.796241] kasan_save_stack+0x45/0x70 [ 15.797356] kasan_save_track+0x18/0x40 [ 15.797962] kasan_save_alloc_info+0x3b/0x50 [ 15.798449] __kasan_kmalloc+0xb7/0xc0 [ 15.798837] __kmalloc_cache_noprof+0x189/0x420 [ 15.799470] kmalloc_big_oob_right+0xa9/0x370 [ 15.799909] kunit_try_run_case+0x1a5/0x480 [ 15.800137] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.801123] kthread+0x337/0x6f0 [ 15.801345] ret_from_fork+0x116/0x1d0 [ 15.801512] ret_from_fork_asm+0x1a/0x30 [ 15.803853] [ 15.803987] The buggy address belongs to the object at ffff888103b78000 [ 15.803987] which belongs to the cache kmalloc-8k of size 8192 [ 15.805507] The buggy address is located 0 bytes to the right of [ 15.805507] allocated 7936-byte region [ffff888103b78000, ffff888103b79f00) [ 15.807814] [ 15.807952] The buggy address belongs to the physical page: [ 15.808193] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103b78 [ 15.808646] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 15.808966] flags: 0x200000000000040(head|node=0|zone=2) [ 15.809368] page_type: f5(slab) [ 15.810651] raw: 0200000000000040 ffff888100042280 dead000000000122 0000000000000000 [ 15.812691] raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 15.814471] head: 0200000000000040 ffff888100042280 dead000000000122 0000000000000000 [ 15.816615] head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 15.818832] head: 0200000000000003 ffffea00040ede01 00000000ffffffff 00000000ffffffff [ 15.820812] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 [ 15.821546] page dumped because: kasan: bad access detected [ 15.821811] [ 15.821923] Memory state around the buggy address: [ 15.823579] ffff888103b79e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 15.824155] ffff888103b79e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 15.825748] >ffff888103b79f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.827184] ^ [ 15.827648] ffff888103b79f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.828995] ffff888103b7a000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.829546] ==================================================================