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KASAN: stack-out-of-bounds Read in profile_pc

Status: upstream: reported C repro on 2021/05/31 07:15
Subsystems: kernel
[Documentation on labels]
Reported-by: syzbot+84fe685c02cd112a2ac3@syzkaller.appspotmail.com
First crash: 921d, last: 1h36m
Cause bisection: failed (error log, bisect log)
  
▶ ▼ Discussions (5)
Title Replies (including bot) Last reply
[PATCH v3] x86: profiling: remove lock functions profiling in profile_pc 2 (2) 2023/04/28 04:45
[PATCH 0/2] Fix two bugs for profile 7 (7) 2023/04/19 15:43
[PATCH v2] x86: profiling: remove lock functions hack for !FRAME_POINTER 1 (1) 2023/04/13 07:37
[PATCH] x86: profiling: Using generic unwinding in profile_pc 4 (4) 2023/04/04 02:03
[syzbot] KASAN: stack-out-of-bounds Read in profile_pc 10 (12) 2021/10/11 17:30
▶ ▼ Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-54 KASAN: stack-out-of-bounds Read in profile_pc C 207 13d 921d 0/2 upstream: reported C repro on 2021/05/27 02:31
linux-5.15 KASAN: stack-out-of-bounds Read in profile_pc origin:upstream C 26 13d 258d 0/3 upstream: reported C repro on 2023/03/21 15:14
linux-6.1 KASAN: stack-out-of-bounds Read in profile_pc origin:upstream C 14 12d 203d 0/3 upstream: reported C repro on 2023/05/15 01:52
▶ ▼ Last patch testing requests (6)
Created Duration User Patch Repo Result
2023/09/15 08:01 11m retest repro upstream report log
2023/09/15 08:01 28m retest repro upstream report log
2023/09/15 08:01 10m retest repro upstream report log
2023/09/15 08:01 9m retest repro upstream report log
2023/09/15 08:01 9m retest repro upstream report log
2021/06/14 17:36 12m chouhan.shreyansh630@gmail.com upstream report log

Sample crash report:
==================================================================
BUG: KASAN: stack-out-of-bounds in profile_pc+0x179/0x190 arch/x86/kernel/time.c:44
Read of size 8 at addr ffffc90003af7bb0 by task strace-static-x/5061

CPU: 0 PID: 5061 Comm: strace-static-x Not tainted 6.7.0-rc3-syzkaller-00284-g815fb87b7530 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:364 [inline]
 print_report+0xc4/0x620 mm/kasan/report.c:475
 kasan_report+0xda/0x110 mm/kasan/report.c:588
 profile_pc+0x179/0x190 arch/x86/kernel/time.c:44
 profile_tick+0xcd/0x130 kernel/profile.c:339
 tick_nohz_highres_handler+0xe9/0x110 kernel/time/tick-sched.c:1516
 __run_hrtimer kernel/time/hrtimer.c:1688 [inline]
 __hrtimer_run_queues+0x647/0xc20 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline]
 __sysvec_apic_timer_interrupt+0x105/0x400 arch/x86/kernel/apic/apic.c:1082
 sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1076
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:queued_read_lock_slowpath+0x131/0x2ad kernel/locking/qrwlock.c:51
Code: 85 41 01 00 00 8b 03 84 c0 74 36 48 b8 00 00 00 00 00 fc ff df 49 89 de 48 89 dd 49 c1 ee 03 83 e5 07 49 01 c6 83 c5 03 f3 90 <41> 0f b6 06 40 38 c5 7c 08 84 c0 0f 85 1b 01 00 00 8b 03 84 c0 75
RSP: 0018:ffffc90003af7ba8 EFLAGS: 00000286
RAX: 00000000000002ff RBX: ffffffff8cc0a080 RCX: ffffffff8a838a4b
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff8cc0a080
RBP: 0000000000000003 R08: 0000000000000001 R09: fffffbfff1981410
R10: ffffffff8cc0a083 R11: 0000000000000000 R12: 1ffff9200075ef76
R13: ffffffff8cc0a084 R14: fffffbfff1981410 R15: ffffffff814f4182
 __do_wait+0x105/0x890 kernel/exit.c:1585
 do_wait+0x212/0x530 kernel/exit.c:1629
 kernel_wait4+0x16d/0x280 kernel/exit.c:1788
 __do_sys_wait4+0x15b/0x170 kernel/exit.c:1816
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x4d6ad6
Code: 00 00 00 90 31 c9 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 49 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 11 b8 3d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 5a c3 90 48 83 ec 28 89 54 24 14 48 89 74 24
RSP: 002b:00007fff00653b88 EFLAGS: 00000246 ORIG_RAX: 000000000000003d
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00000000004d6ad6
RDX: 0000000040000001 RSI: 00007fff00653bac RDI: 00000000ffffffff
RBP: 00000000000006ab R08: 0000000000000000 R09: 00000000000002ab
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000011a3640
R13: 00007fff00653bac R14: 000000000119eb50 R15: 000000000063f160
 </TASK>

The buggy address belongs to stack of task strace-static-x/5061
 and is located at offset 0 in frame:
 queued_read_lock_slowpath+0x0/0x2ad arch/x86/include/asm/paravirt.h:586

This frame has 1 object:
 [32, 36) 'val'

The buggy address belongs to the virtual mapping at
 [ffffc90003af0000, ffffc90003af9000) created by:
 kernel_clone+0xfd/0x930 kernel/fork.c:2907

The buggy address belongs to the physical page:
page:ffffea000053b7c0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x14edf
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2dc2(GFP_KERNEL|__GFP_HIGHMEM|__GFP_NOWARN|__GFP_ZERO), pid 5059, tgid 5059 (sshd), ts 57955946126, free_ts 51167916430
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x2d0/0x350 mm/page_alloc.c:1537
 prep_new_page mm/page_alloc.c:1544 [inline]
 get_page_from_freelist+0xa25/0x36d0 mm/page_alloc.c:3312
 __alloc_pages+0x22e/0x2420 mm/page_alloc.c:4568
 alloc_pages_mpol+0x258/0x5f0 mm/mempolicy.c:2133
 vm_area_alloc_pages mm/vmalloc.c:3063 [inline]
 __vmalloc_area_node mm/vmalloc.c:3139 [inline]
 __vmalloc_node_range+0xa6e/0x1540 mm/vmalloc.c:3320
 alloc_thread_stack_node kernel/fork.c:309 [inline]
 dup_task_struct kernel/fork.c:1118 [inline]
 copy_process+0x138b/0x73f0 kernel/fork.c:2332
 kernel_clone+0xfd/0x930 kernel/fork.c:2907
 __do_sys_clone+0xba/0x100 kernel/fork.c:3050
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1137 [inline]
 free_unref_page_prepare+0x4fa/0xaa0 mm/page_alloc.c:2347
 free_unref_page+0x33/0x3b0 mm/page_alloc.c:2487
 __folio_put_small mm/swap.c:106 [inline]
 __folio_put+0xc3/0x110 mm/swap.c:129
 folio_put include/linux/mm.h:1483 [inline]
 put_page include/linux/mm.h:1552 [inline]
 anon_pipe_buf_release+0x3fa/0x4b0 fs/pipe.c:138
 pipe_buf_release include/linux/pipe_fs_i.h:219 [inline]
 pipe_update_tail fs/pipe.c:234 [inline]
 pipe_read+0x645/0x1400 fs/pipe.c:354
 call_read_iter include/linux/fs.h:2014 [inline]
 new_sync_read fs/read_write.c:389 [inline]
 vfs_read+0x7c5/0x8f0 fs/read_write.c:470
 ksys_read+0x1f0/0x250 fs/read_write.c:613
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

Memory state around the buggy address:
 ffffc90003af7a80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc90003af7b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc90003af7b80: 00 00 00 00 00 00 f1 f1 f1 f1 04 f3 f3 f3 00 00
                                     ^
 ffffc90003af7c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc90003af7c80: 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00
==================================================================
==================================================================
BUG: KASAN: stack-out-of-bounds in profile_pc+0x179/0x190 arch/x86/kernel/time.c:44
Read of size 8 at addr ffffc90003af7bb0 by task strace-static-x/5061

CPU: 0 PID: 5061 Comm: strace-static-x Tainted: G    B              6.7.0-rc3-syzkaller-00284-g815fb87b7530 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:364 [inline]
 print_report+0xc4/0x620 mm/kasan/report.c:475
 kasan_report+0xda/0x110 mm/kasan/report.c:588
 profile_pc+0x179/0x190 arch/x86/kernel/time.c:44
 profile_tick+0xcd/0x130 kernel/profile.c:339
 tick_nohz_highres_handler+0xe9/0x110 kernel/time/tick-sched.c:1516
 __run_hrtimer kernel/time/hrtimer.c:1688 [inline]
 __hrtimer_run_queues+0x647/0xc20 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline]
 __sysvec_apic_timer_interrupt+0x105/0x400 arch/x86/kernel/apic/apic.c:1082
 sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1076
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:queued_read_lock_slowpath+0x131/0x2ad kernel/locking/qrwlock.c:51
Code: 85 41 01 00 00 8b 03 84 c0 74 36 48 b8 00 00 00 00 00 fc ff df 49 89 de 48 89 dd 49 c1 ee 03 83 e5 07 49 01 c6 83 c5 03 f3 90 <41> 0f b6 06 40 38 c5 7c 08 84 c0 0f 85 1b 01 00 00 8b 03 84 c0 75
RSP: 0018:ffffc90003af7ba8 EFLAGS: 00000286
RAX: 00000000000002ff RBX: ffffffff8cc0a080 RCX: ffffffff8a838a4b
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff8cc0a080
RBP: 0000000000000003 R08: 0000000000000001 R09: fffffbfff1981410
R10: ffffffff8cc0a083 R11: 0000000000000000 R12: 1ffff9200075ef76
R13: ffffffff8cc0a084 R14: fffffbfff1981410 R15: ffffffff814f4182
 __do_wait+0x105/0x890 kernel/exit.c:1585
 do_wait+0x212/0x530 kernel/exit.c:1629
 kernel_wait4+0x16d/0x280 kernel/exit.c:1788
 __do_sys_wait4+0x15b/0x170 kernel/exit.c:1816
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x4d6ad6
Code: 00 00 00 90 31 c9 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 49 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 11 b8 3d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 5a c3 90 48 83 ec 28 89 54 24 14 48 89 74 24
RSP: 002b:00007fff00653b88 EFLAGS: 00000246 ORIG_RAX: 000000000000003d
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00000000004d6ad6
RDX: 0000000040000001 RSI: 00007fff00653bac RDI: 00000000ffffffff
RBP: 00000000000006ab R08: 0000000000000000 R09: 00000000000002ab
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000011a3640
R13: 00007fff00653bac R14: 000000000119eb50 R15: 000000000063f160
 </TASK>

The buggy address belongs to stack of task strace-static-x/5061
 and is located at offset 0 in frame:
 queued_read_lock_slowpath+0x0/0x2ad arch/x86/include/asm/paravirt.h:586

This frame has 1 object:
 [32, 36) 'val'

The buggy address belongs to the virtual mapping at
 [ffffc90003af0000, ffffc90003af9000) created by:
 kernel_clone+0xfd/0x930 kernel/fork.c:2907

The buggy address belongs to the physical page:
page:ffffea000053b7c0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x14edf
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2dc2(GFP_KERNEL|__GFP_HIGHMEM|__GFP_NOWARN|__GFP_ZERO), pid 5059, tgid 5059 (sshd), ts 57955946126, free_ts 51167916430
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x2d0/0x350 mm/page_alloc.c:1537
 prep_new_page mm/page_alloc.c:1544 [inline]
 get_page_from_freelist+0xa25/0x36d0 mm/page_alloc.c:3312
 __alloc_pages+0x22e/0x2420 mm/page_alloc.c:4568
 alloc_pages_mpol+0x258/0x5f0 mm/mempolicy.c:2133
 vm_area_alloc_pages mm/vmalloc.c:3063 [inline]
 __vmalloc_area_node mm/vmalloc.c:3139 [inline]
 __vmalloc_node_range+0xa6e/0x1540 mm/vmalloc.c:3320
 alloc_thread_stack_node kernel/fork.c:309 [inline]
 dup_task_struct kernel/fork.c:1118 [inline]
 copy_process+0x138b/0x73f0 kernel/fork.c:2332
 kernel_clone+0xfd/0x930 kernel/fork.c:2907
 __do_sys_clone+0xba/0x100 kernel/fork.c:3050
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1137 [inline]
 free_unref_page_prepare+0x4fa/0xaa0 mm/page_alloc.c:2347
 free_unref_page+0x33/0x3b0 mm/page_alloc.c:2487
 __folio_put_small mm/swap.c:106 [inline]
 __folio_put+0xc3/0x110 mm/swap.c:129
 folio_put include/linux/mm.h:1483 [inline]
 put_page include/linux/mm.h:1552 [inline]
 anon_pipe_buf_release+0x3fa/0x4b0 fs/pipe.c:138
 pipe_buf_release include/linux/pipe_fs_i.h:219 [inline]
 pipe_update_tail fs/pipe.c:234 [inline]
 pipe_read+0x645/0x1400 fs/pipe.c:354
 call_read_iter include/linux/fs.h:2014 [inline]
 new_sync_read fs/read_write.c:389 [inline]
 vfs_read+0x7c5/0x8f0 fs/read_write.c:470
 ksys_read+0x1f0/0x250 fs/read_write.c:613
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

Memory state around the buggy address:
 ffffc90003af7a80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc90003af7b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc90003af7b80: 00 00 00 00 00 00 f1 f1 f1 f1 04 f3 f3 f3 00 00
                                     ^
 ffffc90003af7c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc90003af7c80: 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00
==================================================================
==================================================================
BUG: KASAN: stack-out-of-bounds in profile_pc+0x179/0x190 arch/x86/kernel/time.c:44
Read of size 8 at addr ffffc90003af7bb0 by task strace-static-x/5061

CPU: 0 PID: 5061 Comm: strace-static-x Tainted: G    B              6.7.0-rc3-syzkaller-00284-g815fb87b7530 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:364 [inline]
 print_report+0xc4/0x620 mm/kasan/report.c:475
 kasan_report+0xda/0x110 mm/kasan/report.c:588
 profile_pc+0x179/0x190 arch/x86/kernel/time.c:44
 profile_tick+0xcd/0x130 kernel/profile.c:339
 tick_nohz_highres_handler+0xe9/0x110 kernel/time/tick-sched.c:1516
 __run_hrtimer kernel/time/hrtimer.c:1688 [inline]
 __hrtimer_run_queues+0x647/0xc20 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline]
 __sysvec_apic_timer_interrupt+0x105/0x400 arch/x86/kernel/apic/apic.c:1082
 sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1076
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:queued_read_lock_slowpath+0x131/0x2ad kernel/locking/qrwlock.c:51
Code: 85 41 01 00 00 8b 03 84 c0 74 36 48 b8 00 00 00 00 00 fc ff df 49 89 de 48 89 dd 49 c1 ee 03 83 e5 07 49 01 c6 83 c5 03 f3 90 <41> 0f b6 06 40 38 c5 7c 08 84 c0 0f 85 1b 01 00 00 8b 03 84 c0 75
RSP: 0018:ffffc90003af7ba8 EFLAGS: 00000286
RAX: 00000000000002ff RBX: ffffffff8cc0a080 RCX: ffffffff8a838a4b
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff8cc0a080
RBP: 0000000000000003 R08: 0000000000000001 R09: fffffbfff1981410
R10: ffffffff8cc0a083 R11: 0000000000000000 R12: 1ffff9200075ef76
R13: ffffffff8cc0a084 R14: fffffbfff1981410 R15: ffffffff814f4182
 __do_wait+0x105/0x890 kernel/exit.c:1585
 do_wait+0x212/0x530 kernel/exit.c:1629
 kernel_wait4+0x16d/0x280 kernel/exit.c:1788
 __do_sys_wait4+0x15b/0x170 kernel/exit.c:1816
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x4d6ad6
Code: 00 00 00 90 31 c9 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 49 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 11 b8 3d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 5a c3 90 48 83 ec 28 89 54 24 14 48 89 74 24
RSP: 002b:00007fff00653b88 EFLAGS: 00000246 ORIG_RAX: 000000000000003d
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00000000004d6ad6
RDX: 0000000040000001 RSI: 00007fff00653bac RDI: 00000000ffffffff
RBP: 00000000000006ab R08: 0000000000000000 R09: 00000000000002ab
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000011a3640
R13: 00007fff00653bac R14: 000000000119eb50 R15: 000000000063f160
 </TASK>

The buggy address belongs to stack of task strace-static-x/5061
 and is located at offset 0 in frame:
 queued_read_lock_slowpath+0x0/0x2ad arch/x86/include/asm/paravirt.h:586

This frame has 1 object:
 [32, 36) 'val'

The buggy address belongs to the virtual mapping at
 [ffffc90003af0000, ffffc90003af9000) created by:
 kernel_clone+0xfd/0x930 kernel/fork.c:2907

The buggy address belongs to the physical page:
page:ffffea000053b7c0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x14edf
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2dc2(GFP_KERNEL|__GFP_HIGHMEM|__GFP_NOWARN|__GFP_ZERO), pid 5059, tgid 5059 (sshd), ts 57955946126, free_ts 51167916430
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x2d0/0x350 mm/page_alloc.c:1537
 prep_new_page mm/page_alloc.c:1544 [inline]
 get_page_from_freelist+0xa25/0x36d0 mm/page_alloc.c:3312
 __alloc_pages+0x22e/0x2420 mm/page_alloc.c:4568
 alloc_pages_mpol+0x258/0x5f0 mm/mempolicy.c:2133
 vm_area_alloc_pages mm/vmalloc.c:3063 [inline]
 __vmalloc_area_node mm/vmalloc.c:3139 [inline]
 __vmalloc_node_range+0xa6e/0x1540 mm/vmalloc.c:3320
 alloc_thread_stack_node kernel/fork.c:309 [inline]
 dup_task_struct kernel/fork.c:1118 [inline]
 copy_process+0x138b/0x73f0 kernel/fork.c:2332
 kernel_clone+0xfd/0x930 kernel/fork.c:2907
 __do_sys_clone+0xba/0x100 kernel/fork.c:3050
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1137 [inline]
 free_unref_page_prepare+0x4fa/0xaa0 mm/page_alloc.c:2347
 free_unref_page+0x33/0x3b0 mm/page_alloc.c:2487
 __folio_put_small mm/swap.c:106 [inline]
 __folio_put+0xc3/0x110 mm/swap.c:129
 folio_put include/linux/mm.h:1483 [inline]
 put_page include/linux/mm.h:1552 [inline]
 anon_pipe_buf_release+0x3fa/0x4b0 fs/pipe.c:138
 pipe_buf_release include/linux/pipe_fs_i.h:219 [inline]
 pipe_update_tail fs/pipe.c:234 [inline]
 pipe_read+0x645/0x1400 fs/pipe.c:354
 call_read_iter include/linux/fs.h:2014 [inline]
 new_sync_read fs/read_write.c:389 [inline]
 vfs_read+0x7c5/0x8f0 fs/read_write.c:470
 ksys_read+0x1f0/0x250 fs/read_write.c:613
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

Memory state around the buggy address:
 ffffc90003af7a80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc90003af7b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc90003af7b80: 00 00 00 00 00 00 f1 f1 f1 f1 04 f3 f3 f3 00 00
                                     ^
 ffffc90003af7c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc90003af7c80: 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00
==================================================================
hrtimer: interrupt took 2043068090 ns
----------------
Code disassembly (best guess):
   0:	85 41 01             	test   %eax,0x1(%rcx)
   3:	00 00                	add    %al,(%rax)
   5:	8b 03                	mov    (%rbx),%eax
   7:	84 c0                	test   %al,%al
   9:	74 36                	je     0x41
   b:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  12:	fc ff df
  15:	49 89 de             	mov    %rbx,%r14
  18:	48 89 dd             	mov    %rbx,%rbp
  1b:	49 c1 ee 03          	shr    $0x3,%r14
  1f:	83 e5 07             	and    $0x7,%ebp
  22:	49 01 c6             	add    %rax,%r14
  25:	83 c5 03             	add    $0x3,%ebp
  28:	f3 90                	pause
* 2a:	41 0f b6 06          	movzbl (%r14),%eax <-- trapping instruction
  2e:	40 38 c5             	cmp    %al,%bpl
  31:	7c 08                	jl     0x3b
  33:	84 c0                	test   %al,%al
  35:	0f 85 1b 01 00 00    	jne    0x156
  3b:	8b 03                	mov    (%rbx),%eax
  3d:	84 c0                	test   %al,%al
  3f:	75                   	.byte 0x75

Crashes (1054):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/12/02 22:36 upstream 815fb87b7530 f819d6f7 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root KASAN: stack-out-of-bounds Read in profile_pc
2023/11/27 09:45 upstream d2da77f431ac 5b429f39 .config console log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root KASAN: stack-out-of-bounds Read in profile_pc
2023/11/23 10:08 upstream 9b6de136b5f0 03e12510 .config console log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root KASAN: stack-out-of-bounds Read in profile_pc
2023/11/04 19:11 upstream 90b0c2b2edd1 500bfdc4 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root KASAN: stack-out-of-bounds Read in profile_pc
2023/09/01 07:42 upstream b97d64c72259 696ea0d2 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root KASAN: stack-out-of-bounds Read in profile_pc
2023/07/07 05:23 upstream a452483508d7 22ae5830 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: stack-out-of-bounds Read in profile_pc
2023/03/21 16:04 upstream 17214b70a159 7939252e .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: stack-out-of-bounds Read in profile_pc
2023/02/23 11:48 upstream 307e14c03906 9e2ebb3c .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: stack-out-of-bounds Read in profile_pc
2022/11/27 07:00 upstream 644e9524388a f4470a7b .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: stack-out-of-bounds Read in profile_pc
2022/10/09 06:29 upstream a6afa4199d3d aea5da89 .config strace log report syz C [disk image] [vmlinux] ci2-upstream-fs KASAN: stack-out-of-bounds Read in profile_pc
2023/11/25 07:20 upstream 0f5cc96c367f 5b429f39 .config console log report syz C [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream KASAN: stack-out-of-bounds Read in profile_pc
2023/08/14 19:04 upstream 2ccdd1b13c59 39990d51 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root KASAN: stack-out-of-bounds Read in profile_pc
2023/07/08 06:27 upstream 4f6b6c2b2f86 668cb1fa .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/06/15 09:58 upstream b6dad5178cea 76decb82 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root KASAN: stack-out-of-bounds Read in profile_pc
2023/06/07 01:23 upstream a4d7d7011219 a4ae4f42 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root KASAN: stack-out-of-bounds Read in profile_pc
2023/03/23 16:00 upstream fff5a5e7f528 f94b4a29 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root KASAN: stack-out-of-bounds Read in profile_pc
2023/02/23 13:10 upstream d8ca6dbb8de7 9e2ebb3c .config console log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/02/19 05:01 upstream 38f8ccde04a3 bcdf85f8 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root KASAN: stack-out-of-bounds Read in profile_pc
2022/12/24 23:26 upstream 72a85e2b0a1e 9da18ae8 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root KASAN: stack-out-of-bounds Read in profile_pc
2022/10/02 01:47 upstream b357fd1c2afc feb56351 .config strace log report syz C [disk image] [vmlinux] ci-upstream-kasan-gce-smack-root KASAN: stack-out-of-bounds Read in profile_pc
2022/10/01 18:00 upstream ffb4d94b4314 feb56351 .config strace log report syz C [disk image] [vmlinux] ci-upstream-kasan-gce-smack-root KASAN: stack-out-of-bounds Read in profile_pc
2022/10/01 17:49 upstream ffb4d94b4314 feb56351 .config strace log report syz C [disk image] [vmlinux] ci-upstream-kasan-gce-smack-root KASAN: stack-out-of-bounds Read in profile_pc
2022/08/05 09:10 upstream 200e340f2196 1c9013ac .config strace log report syz C ci-upstream-kasan-gce-smack-root KASAN: stack-out-of-bounds Read in profile_pc
2022/06/23 22:30 upstream de5c208d533a 912f5df7 .config strace log report syz C ci-upstream-kasan-gce-smack-root KASAN: stack-out-of-bounds Read in profile_pc
2022/03/08 13:33 upstream ea4424be1688 7bdd8b2c .config console log report syz C ci-upstream-kasan-gce-smack-root KASAN: stack-out-of-bounds Read in profile_pc
2022/03/08 12:21 upstream ea4424be1688 7bdd8b2c .config console log report syz C ci-upstream-kasan-gce-smack-root KASAN: stack-out-of-bounds Read in profile_pc
2022/03/08 11:49 upstream ea4424be1688 7bdd8b2c .config console log report syz C ci-upstream-kasan-gce-smack-root KASAN: stack-out-of-bounds Read in profile_pc
2022/03/08 11:28 upstream ea4424be1688 7bdd8b2c .config console log report syz C ci-upstream-kasan-gce-smack-root KASAN: stack-out-of-bounds Read in profile_pc
2022/02/19 13:43 upstream 4f12b742eb2b 3cd800e4 .config console log report syz C ci-upstream-kasan-gce-smack-root KASAN: stack-out-of-bounds Read in profile_pc
2022/02/17 06:57 upstream 359303076163 2bea8a27 .config console log report syz C ci-upstream-kasan-gce-smack-root KASAN: stack-out-of-bounds Read in profile_pc
2021/06/03 08:01 upstream 324c92e5e0ee 0740de69 .config console log report syz C ci-upstream-kasan-gce-smack-root KASAN: stack-out-of-bounds Read in profile_pc
2023/07/11 02:18 linux-next fe57d0d86f03 52ae002a .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root KASAN: stack-out-of-bounds Read in profile_pc
2023/06/07 04:08 linux-next 715abedee4cd a4ae4f42 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root KASAN: stack-out-of-bounds Read in profile_pc
2023/01/09 20:19 linux-next 543b9b2fe10b 1dac8c7a .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root KASAN: stack-out-of-bounds Read in profile_pc
2022/12/25 11:10 linux-next e45fb347b630 9da18ae8 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root KASAN: stack-out-of-bounds Read in profile_pc
2023/12/04 18:02 upstream 33cc938e65a9 f819d6f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: stack-out-of-bounds Read in profile_pc
2023/12/04 03:29 upstream 33cc938e65a9 f819d6f7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/12/03 17:13 upstream 33cc938e65a9 f819d6f7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/12/03 12:04 upstream 1b8af6552cb7 f819d6f7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/12/03 03:20 upstream 1b8af6552cb7 f819d6f7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/12/02 19:13 upstream 815fb87b7530 f819d6f7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/12/02 17:23 upstream 815fb87b7530 f819d6f7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/12/02 14:17 upstream 815fb87b7530 f819d6f7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/12/02 04:31 upstream 815fb87b7530 f819d6f7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/12/01 15:02 upstream 994d5c58e50e f819d6f7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/12/01 08:21 upstream e8f60209d6cf f819d6f7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/12/01 07:16 upstream e8f60209d6cf f819d6f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: stack-out-of-bounds Read in profile_pc
2023/12/01 01:31 upstream e8f60209d6cf f819d6f7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/11/30 23:15 upstream 3b47bc037bd4 f819d6f7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/11/30 07:39 upstream 3b47bc037bd4 f819d6f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: stack-out-of-bounds Read in profile_pc
2023/11/30 04:38 upstream 3b47bc037bd4 f819d6f7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/11/29 19:10 upstream 3b47bc037bd4 6e78f9ce .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/11/29 13:36 upstream 18d46e76d7c2 6e78f9ce .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/11/29 05:57 upstream 18d46e76d7c2 1adfb6f6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/11/28 22:18 upstream df60cee26a2e 1adfb6f6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/11/28 16:38 upstream df60cee26a2e 1adfb6f6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/11/28 15:32 upstream df60cee26a2e 1adfb6f6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/11/28 11:42 upstream df60cee26a2e 9fe51b7c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/11/28 10:41 upstream df60cee26a2e 9fe51b7c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/11/27 21:39 upstream 2cc14f52aeb7 9fe51b7c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/11/27 20:19 upstream 2cc14f52aeb7 9fe51b7c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/11/27 17:25 upstream 2cc14f52aeb7 5b429f39 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/11/27 16:17 upstream 2cc14f52aeb7 5b429f39 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/11/27 04:57 upstream d2da77f431ac 5b429f39 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/11/27 02:46 upstream d2da77f431ac 5b429f39 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/11/26 18:54 upstream 090472ed9c92 5b429f39 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/11/26 16:28 upstream 090472ed9c92 5b429f39 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/11/26 12:48 upstream 090472ed9c92 5b429f39 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/11/26 00:11 upstream b46ae77f6787 5b429f39 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/11/25 22:56 upstream b46ae77f6787 5b429f39 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/11/25 18:53 upstream 0f5cc96c367f 5b429f39 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/11/25 10:09 upstream 0f5cc96c367f 5b429f39 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/11/24 20:26 upstream fa2b906f5148 5b429f39 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/11/24 12:09 upstream f1a09972a45a 5b429f39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: stack-out-of-bounds Read in profile_pc
2023/11/24 05:26 upstream f1a09972a45a 5b429f39 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/11/23 22:57 upstream d3fa86b1a7b4 fc59b78e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root KASAN: stack-out-of-bounds Read in profile_pc
2023/11/23 15:34 upstream 9b6de136b5f0 fc59b78e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/11/23 14:24 upstream 9b6de136b5f0 fc59b78e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce KASAN: stack-out-of-bounds Read in profile_pc
2023/11/23 01:03 upstream 9b6de136b5f0 03e12510 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root KASAN: stack-out-of-bounds Read in profile_pc
2023/11/22 17:49 upstream c2d5304e6c64 03e12510 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root KASAN: stack-out-of-bounds Read in profile_pc
2023/11/17 15:04 upstream 7475e51b8796 cb976f63 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root KASAN: stack-out-of-bounds Read in profile_pc
2023/11/29 08:17 upstream 18d46e76d7c2 1adfb6f6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 KASAN: stack-out-of-bounds Read in profile_pc
2023/11/27 14:55 upstream 2cc14f52aeb7 5b429f39 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 KASAN: stack-out-of-bounds Read in profile_pc
2023/11/24 07:42 upstream f1a09972a45a 5b429f39 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 KASAN: stack-out-of-bounds Read in profile_pc
2023/11/03 16:10 upstream 8f6f76a6a29f 500bfdc4 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 KASAN: stack-out-of-bounds Read in profile_pc
2021/05/27 02:41 upstream 7ac3a1c1ae51 858ea628 .config console log report info ci-upstream-kasan-gce-smack-root KASAN: stack-out-of-bounds Read in profile_pc
2023/11/25 11:54 linux-next 8c9660f65153 5b429f39 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root KASAN: stack-out-of-bounds Read in profile_pc
* Struck through repros no longer work on HEAD.