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Date
Nov. 28, 2024, 2:36 a.m.

Environment
qemu-arm64
qemu-x86_64 

[   32.851785] ==================================================================
[   32.852750] BUG: KASAN: use-after-free in mempool_uaf_helper+0x314/0x340
[   32.853811] Read of size 1 at addr fff00000c660c000 by task kunit_try_catch/217
[   32.854617] 
[   32.854999] CPU: 1 UID: 0 PID: 217 Comm: kunit_try_catch Tainted: G    B            N 6.12.0-next-20241128 #1
[   32.856777] Tainted: [B]=BAD_PAGE, [N]=TEST
[   32.857360] Hardware name: linux,dummy-virt (DT)
[   32.858004] Call trace:
[   32.858688]  show_stack+0x20/0x38 (C)
[   32.859522]  dump_stack_lvl+0x8c/0xd0
[   32.860077]  print_report+0x118/0x5e0
[   32.860745]  kasan_report+0xc8/0x118
[   32.861604]  __asan_report_load1_noabort+0x20/0x30
[   32.862144]  mempool_uaf_helper+0x314/0x340
[   32.862852]  mempool_kmalloc_large_uaf+0xbc/0x118
[   32.863451]  kunit_try_run_case+0x14c/0x3d0
[   32.864188]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   32.865041]  kthread+0x24c/0x2d0
[   32.865540]  ret_from_fork+0x10/0x20
[   32.866311] 
[   32.866627] The buggy address belongs to the physical page:
[   32.867227] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10660c
[   32.868031] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   32.868882] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff)
[   32.869699] raw: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000
[   32.870566] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   32.871655] head: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000
[   32.872687] head: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   32.873887] head: 0bfffe0000000002 ffffc1ffc3198301 ffffffffffffffff 0000000000000000
[   32.874975] head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000
[   32.875803] page dumped because: kasan: bad access detected
[   32.876706] 
[   32.877287] Memory state around the buggy address:
[   32.878197]  fff00000c660bf00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   32.878938]  fff00000c660bf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   32.879695] >fff00000c660c000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   32.880782]                    ^
[   32.882049]  fff00000c660c080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   32.882987]  fff00000c660c100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   32.883749] ==================================================================
[   32.967177] ==================================================================
[   32.967960] BUG: KASAN: use-after-free in mempool_uaf_helper+0x314/0x340
[   32.968762] Read of size 1 at addr fff00000c6610000 by task kunit_try_catch/221
[   32.969439] 
[   32.969803] CPU: 1 UID: 0 PID: 221 Comm: kunit_try_catch Tainted: G    B            N 6.12.0-next-20241128 #1
[   32.970928] Tainted: [B]=BAD_PAGE, [N]=TEST
[   32.971445] Hardware name: linux,dummy-virt (DT)
[   32.972024] Call trace:
[   32.972467]  show_stack+0x20/0x38 (C)
[   32.973064]  dump_stack_lvl+0x8c/0xd0
[   32.973575]  print_report+0x118/0x5e0
[   32.974177]  kasan_report+0xc8/0x118
[   32.974753]  __asan_report_load1_noabort+0x20/0x30
[   32.975365]  mempool_uaf_helper+0x314/0x340
[   32.975944]  mempool_page_alloc_uaf+0xb8/0x118
[   32.976616]  kunit_try_run_case+0x14c/0x3d0
[   32.977256]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   32.977980]  kthread+0x24c/0x2d0
[   32.978545]  ret_from_fork+0x10/0x20
[   32.979058] 
[   32.979407] The buggy address belongs to the physical page:
[   32.980063] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106610
[   32.980997] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   32.981798] raw: 0bfffe0000000000 0000000000000000 dead000000000122 0000000000000000
[   32.982595] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   32.983432] page dumped because: kasan: bad access detected
[   32.984032] 
[   32.984353] Memory state around the buggy address:
[   32.984932]  fff00000c660ff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   32.985707]  fff00000c660ff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   32.986456] >fff00000c6610000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   32.987179]                    ^
[   32.987621]  fff00000c6610080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   32.988489]  fff00000c6610100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   32.989148] ==================================================================
Metadata Full log Test run details 

[   23.851538] ==================================================================
[   23.852251] BUG: KASAN: use-after-free in mempool_uaf_helper+0x394/0x400
[   23.853412] Read of size 1 at addr ffff888102da4000 by task kunit_try_catch/241
[   23.854717] 
[   23.854919] CPU: 1 UID: 0 PID: 241 Comm: kunit_try_catch Tainted: G    B            N 6.12.0-next-20241128 #1
[   23.855877] Tainted: [B]=BAD_PAGE, [N]=TEST
[   23.856268] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   23.857149] Call Trace:
[   23.857664]  <TASK>
[   23.858101]  dump_stack_lvl+0x73/0xb0
[   23.858777]  print_report+0xd1/0x640
[   23.859421]  ? __virt_addr_valid+0x1db/0x2d0
[   23.860110]  ? kasan_addr_to_slab+0x11/0xa0
[   23.860641]  kasan_report+0x102/0x140
[   23.861170]  ? mempool_uaf_helper+0x394/0x400
[   23.861911]  ? mempool_uaf_helper+0x394/0x400
[   23.862613]  __asan_report_load1_noabort+0x18/0x20
[   23.863457]  mempool_uaf_helper+0x394/0x400
[   23.863947]  ? __pfx_mempool_uaf_helper+0x10/0x10
[   23.864770]  mempool_page_alloc_uaf+0xb1/0x100
[   23.865559]  ? __pfx_mempool_page_alloc_uaf+0x10/0x10
[   23.866060]  ? __switch_to+0x5d9/0xf60
[   23.866767]  ? __pfx_mempool_alloc_pages+0x10/0x10
[   23.867533]  ? __pfx_mempool_free_pages+0x10/0x10
[   23.868015]  ? __pfx_read_tsc+0x10/0x10
[   23.869045]  ? ktime_get_ts64+0x84/0x230
[   23.869426]  kunit_try_run_case+0x1b3/0x490
[   23.869900]  ? __pfx_kunit_try_run_case+0x10/0x10
[   23.870612]  ? _raw_spin_lock_irqsave+0xa2/0x110
[   23.871122]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   23.871971]  ? __kthread_parkme+0x82/0x160
[   23.872270]  ? preempt_count_sub+0x50/0x80
[   23.872588]  ? __pfx_kunit_try_run_case+0x10/0x10
[   23.873173]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   23.874109]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   23.874794]  kthread+0x257/0x310
[   23.875568]  ? __pfx_kthread+0x10/0x10
[   23.876410]  ret_from_fork+0x41/0x80
[   23.876800]  ? __pfx_kthread+0x10/0x10
[   23.877194]  ret_from_fork_asm+0x1a/0x30
[   23.878100]  </TASK>
[   23.878463] 
[   23.878716] The buggy address belongs to the physical page:
[   23.879532] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102da4
[   23.880563] flags: 0x200000000000000(node=0|zone=2)
[   23.880938] raw: 0200000000000000 0000000000000000 dead000000000122 0000000000000000
[   23.881913] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   23.882660] page dumped because: kasan: bad access detected
[   23.883270] 
[   23.884119] Memory state around the buggy address:
[   23.884543]  ffff888102da3f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   23.885769]  ffff888102da3f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   23.886229] >ffff888102da4000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   23.887323]                    ^
[   23.887863]  ffff888102da4080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   23.889051]  ffff888102da4100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   23.890460] ==================================================================
[   23.733816] ==================================================================
[   23.734577] BUG: KASAN: use-after-free in mempool_uaf_helper+0x394/0x400
[   23.735455] Read of size 1 at addr ffff888102da4000 by task kunit_try_catch/237
[   23.737144] 
[   23.737558] CPU: 1 UID: 0 PID: 237 Comm: kunit_try_catch Tainted: G    B            N 6.12.0-next-20241128 #1
[   23.738552] Tainted: [B]=BAD_PAGE, [N]=TEST
[   23.738918] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   23.739814] Call Trace:
[   23.740035]  <TASK>
[   23.740445]  dump_stack_lvl+0x73/0xb0
[   23.740977]  print_report+0xd1/0x640
[   23.741400]  ? __virt_addr_valid+0x1db/0x2d0
[   23.742007]  ? kasan_addr_to_slab+0x11/0xa0
[   23.742435]  kasan_report+0x102/0x140
[   23.742822]  ? mempool_uaf_helper+0x394/0x400
[   23.743240]  ? mempool_uaf_helper+0x394/0x400
[   23.743787]  __asan_report_load1_noabort+0x18/0x20
[   23.744357]  mempool_uaf_helper+0x394/0x400
[   23.744753]  ? __pfx_mempool_uaf_helper+0x10/0x10
[   23.745391]  ? finish_task_switch.isra.0+0x153/0x700
[   23.745800]  mempool_kmalloc_large_uaf+0xb3/0x100
[   23.746190]  ? __pfx_mempool_kmalloc_large_uaf+0x10/0x10
[   23.746973]  ? __switch_to+0x5d9/0xf60
[   23.747551]  ? __pfx_mempool_kmalloc+0x10/0x10
[   23.748115]  ? __pfx_mempool_kfree+0x10/0x10
[   23.748521]  ? __pfx_read_tsc+0x10/0x10
[   23.749061]  ? ktime_get_ts64+0x84/0x230
[   23.749683]  kunit_try_run_case+0x1b3/0x490
[   23.750227]  ? __pfx_kunit_try_run_case+0x10/0x10
[   23.750807]  ? _raw_spin_lock_irqsave+0xa2/0x110
[   23.751404]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   23.751884]  ? __kthread_parkme+0x82/0x160
[   23.752394]  ? preempt_count_sub+0x50/0x80
[   23.752861]  ? __pfx_kunit_try_run_case+0x10/0x10
[   23.753508]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   23.753949]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   23.754789]  kthread+0x257/0x310
[   23.755317]  ? __pfx_kthread+0x10/0x10
[   23.755713]  ret_from_fork+0x41/0x80
[   23.756266]  ? __pfx_kthread+0x10/0x10
[   23.756670]  ret_from_fork_asm+0x1a/0x30
[   23.757146]  </TASK>
[   23.757456] 
[   23.757735] The buggy address belongs to the physical page:
[   23.758453] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102da4
[   23.759204] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   23.759859] flags: 0x200000000000040(head|node=0|zone=2)
[   23.760546] raw: 0200000000000040 0000000000000000 dead000000000122 0000000000000000
[   23.761377] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   23.762137] head: 0200000000000040 0000000000000000 dead000000000122 0000000000000000
[   23.762807] head: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   23.763592] head: 0200000000000002 ffffea00040b6901 ffffffffffffffff 0000000000000000
[   23.764637] head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000
[   23.765306] page dumped because: kasan: bad access detected
[   23.765736] 
[   23.765971] Memory state around the buggy address:
[   23.766460]  ffff888102da3f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   23.767064]  ffff888102da3f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   23.767731] >ffff888102da4000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   23.768385]                    ^
[   23.768781]  ffff888102da4080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   23.769316]  ffff888102da4100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   23.769921] ==================================================================
Metadata Full log Test run details