Hay
Sign in
Date
May 23, 2025, 11:07 p.m.

Environment
qemu-arm64
qemu-x86_64 

[   27.011901] ==================================================================
[   27.012134] BUG: KASAN: use-after-free in page_alloc_uaf+0x328/0x350
[   27.012304] Read of size 1 at addr fff00000c77f0000 by task kunit_try_catch/156
[   27.012466] 
[   27.012572] CPU: 0 UID: 0 PID: 156 Comm: kunit_try_catch Tainted: G    B            N  6.15.0-rc7 #1 PREEMPT 
[   27.012894] Tainted: [B]=BAD_PAGE, [N]=TEST
[   27.013282] Hardware name: linux,dummy-virt (DT)
[   27.013517] Call trace:
[   27.013728]  show_stack+0x20/0x38 (C)
[   27.014338]  dump_stack_lvl+0x8c/0xd0
[   27.014641]  print_report+0x118/0x608
[   27.014788]  kasan_report+0xdc/0x128
[   27.014916]  __asan_report_load1_noabort+0x20/0x30
[   27.015065]  page_alloc_uaf+0x328/0x350
[   27.015206]  kunit_try_run_case+0x170/0x3f0
[   27.015369]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   27.015617]  kthread+0x328/0x630
[   27.015805]  ret_from_fork+0x10/0x20
[   27.016004] 
[   27.016056] The buggy address belongs to the physical page:
[   27.016141] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1077f0
[   27.016626] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   27.016787] page_type: f0(buddy)
[   27.016889] raw: 0bfffe0000000000 fff00000ff616020 fff00000ff616020 0000000000000000
[   27.017282] raw: 0000000000000000 0000000000000004 00000000f0000000 0000000000000000
[   27.017410] page dumped because: kasan: bad access detected
[   27.017530] 
[   27.017609] Memory state around the buggy address:
[   27.017718]  fff00000c77eff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   27.017871]  fff00000c77eff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   27.017996] >fff00000c77f0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   27.018148]                    ^
[   27.018268]  fff00000c77f0080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   27.018438]  fff00000c77f0100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   27.018609] ==================================================================
Metadata Full log Test run details 

[   12.217692] ==================================================================
[   12.218357] BUG: KASAN: use-after-free in page_alloc_uaf+0x356/0x3d0
[   12.218637] Read of size 1 at addr ffff888103910000 by task kunit_try_catch/173
[   12.218952] 
[   12.219059] CPU: 0 UID: 0 PID: 173 Comm: kunit_try_catch Tainted: G    B            N  6.15.0-rc7 #1 PREEMPT(voluntary) 
[   12.219108] Tainted: [B]=BAD_PAGE, [N]=TEST
[   12.219120] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   12.219142] Call Trace:
[   12.219157]  <TASK>
[   12.219175]  dump_stack_lvl+0x73/0xb0
[   12.219206]  print_report+0xd1/0x650
[   12.219228]  ? __virt_addr_valid+0x1db/0x2d0
[   12.219252]  ? page_alloc_uaf+0x356/0x3d0
[   12.219269]  ? kasan_addr_to_slab+0x11/0xa0
[   12.219302]  ? page_alloc_uaf+0x356/0x3d0
[   12.219320]  kasan_report+0x141/0x180
[   12.219343]  ? page_alloc_uaf+0x356/0x3d0
[   12.219366]  __asan_report_load1_noabort+0x18/0x20
[   12.219386]  page_alloc_uaf+0x356/0x3d0
[   12.219404]  ? __pfx_page_alloc_uaf+0x10/0x10
[   12.219423]  ? __schedule+0x10cc/0x2b30
[   12.219446]  ? __pfx_read_tsc+0x10/0x10
[   12.219467]  ? ktime_get_ts64+0x86/0x230
[   12.219493]  kunit_try_run_case+0x1a5/0x480
[   12.219518]  ? __pfx_kunit_try_run_case+0x10/0x10
[   12.219539]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   12.219563]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   12.219585]  ? __kthread_parkme+0x82/0x180
[   12.219607]  ? preempt_count_sub+0x50/0x80
[   12.219633]  ? __pfx_kunit_try_run_case+0x10/0x10
[   12.219657]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   12.219679]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   12.219700]  kthread+0x337/0x6f0
[   12.219717]  ? trace_preempt_on+0x20/0xc0
[   12.219742]  ? __pfx_kthread+0x10/0x10
[   12.219759]  ? _raw_spin_unlock_irq+0x47/0x80
[   12.219780]  ? calculate_sigpending+0x7b/0xa0
[   12.219802]  ? __pfx_kthread+0x10/0x10
[   12.219820]  ret_from_fork+0x41/0x80
[   12.219840]  ? __pfx_kthread+0x10/0x10
[   12.219857]  ret_from_fork_asm+0x1a/0x30
[   12.219889]  </TASK>
[   12.219901] 
[   12.227603] The buggy address belongs to the physical page:
[   12.228076] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103910
[   12.228342] flags: 0x200000000000000(node=0|zone=2)
[   12.228768] page_type: f0(buddy)
[   12.229068] raw: 0200000000000000 ffff88817fffc3e0 ffff88817fffc3e0 0000000000000000
[   12.229443] raw: 0000000000000000 0000000000000004 00000000f0000000 0000000000000000
[   12.229736] page dumped because: kasan: bad access detected
[   12.230041] 
[   12.230120] Memory state around the buggy address:
[   12.230325]  ffff88810390ff00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   12.230639]  ffff88810390ff80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   12.230929] >ffff888103910000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   12.231243]                    ^
[   12.231420]  ffff888103910080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   12.231755]  ffff888103910100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   12.232125] ==================================================================
Metadata Full log Test run details