syzbot


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

Status: upstream: reported C repro on 2023/03/21 15:14
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+ec0607ebe47049bb44b6@syzkaller.appspotmail.com
First crash: 429d, last: 2h15m
Fix bisection: failed (error log, bisect log)
  
Bug presence (1)
Date Name Commit Repro Result
2023/05/10 upstream (ToT) 16a8829130ca C [report] KASAN: stack-out-of-bounds Read in profile_pc
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 768 1h13m 1092d 0/2 upstream: reported C repro on 2021/05/27 02:31
linux-6.1 KASAN: stack-out-of-bounds Read in profile_pc origin:upstream C 274 2h17m 374d 0/3 upstream: reported C repro on 2023/05/15 01:52
upstream KASAN: stack-out-of-bounds Read in profile_pc kernel C error 5636 25m 1088d 0/26 upstream: reported C repro on 2021/05/31 07:15
Fix bisection attempts (2)
Created Duration User Patch Repo Result
2023/12/22 15:13 34m bisect fix linux-5.15.y error job log (0)
2023/04/26 02:31 1h08m bisect fix linux-5.15.y job log (0) log

Sample crash report:
==================================================================
BUG: KASAN: stack-out-of-bounds in profile_pc+0xa4/0xe0 arch/x86/kernel/time.c:42
Read of size 8 at addr ffffc90002cf7400 by task syz-executor133/3508

CPU: 0 PID: 3508 Comm: syz-executor133 Not tainted 5.15.153-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 print_address_description+0x63/0x3b0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:434 [inline]
 kasan_report+0x16b/0x1c0 mm/kasan/report.c:451
 profile_pc+0xa4/0xe0 arch/x86/kernel/time.c:42
 profile_tick+0xd4/0x130 kernel/profile.c:416
 tick_sched_handle kernel/time/tick-sched.c:255 [inline]
 tick_sched_timer+0x390/0x550 kernel/time/tick-sched.c:1473
 __run_hrtimer kernel/time/hrtimer.c:1686 [inline]
 __hrtimer_run_queues+0x55b/0xcf0 kernel/time/hrtimer.c:1750
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1812
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
 __sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102
 sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1096
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd4/0x130 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 a2 82 a4 f7 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> d7 cb 31 f7 65 8b 05 a8 f9 dc 75 85 c0 74 3f 48 c7 04 24 0e 36
RSP: 0018:ffffc90002cf7400 EFLAGS: 00000206
RAX: 7758b574de8ce600 RBX: 1ffff9200059ee84 RCX: ffffffff8162f8e8
RDX: dffffc0000000000 RSI: ffffffff8a8b1500 RDI: 0000000000000001
RBP: ffffc90002cf7490 R08: dffffc0000000000 R09: fffffbfff1f7a01c
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff9200059ee80 R14: ffffc90002cf7420 R15: 0000000000000246
 spin_unlock_irqrestore include/linux/spinlock.h:418 [inline]
 __wake_up_common_lock kernel/sched/wait.c:140 [inline]
 __wake_up_sync_key+0x121/0x1c0 kernel/sched/wait.c:205
 sock_def_readable+0x135/0x240 net/core/sock.c:3092
 __netlink_sendskb net/netlink/af_netlink.c:1277 [inline]
 netlink_broadcast_deliver net/netlink/af_netlink.c:1409 [inline]
 do_one_broadcast net/netlink/af_netlink.c:1494 [inline]
 netlink_broadcast_filtered+0xc60/0x11a0 net/netlink/af_netlink.c:1538
 netlink_broadcast+0x35/0x50 net/netlink/af_netlink.c:1562
 uevent_net_broadcast_untagged lib/kobject_uevent.c:331 [inline]
 kobject_uevent_net_broadcast+0x377/0x560 lib/kobject_uevent.c:409
 kobject_uevent_env+0x567/0x8d0 lib/kobject_uevent.c:593
 device_del+0x9c4/0xbd0 drivers/base/core.c:3592
 rfkill_unregister+0xbe/0x220 net/rfkill/core.c:1116
 hci_unregister_dev+0x3fa/0x550 net/bluetooth/hci_core.c:4053
 vhci_release+0x73/0xc0 drivers/bluetooth/hci_vhci.c:345
 __fput+0x3bf/0x890 fs/file_table.c:280
 task_work_run+0x129/0x1a0 kernel/task_work.c:164
 exit_task_work include/linux/task_work.h:32 [inline]
 do_exit+0x6a3/0x2480 kernel/exit.c:872
 do_group_exit+0x144/0x310 kernel/exit.c:994
 get_signal+0xc66/0x14e0 kernel/signal.c:2889
 arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:148 [inline]
 exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:172
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:208
 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline]
 syscall_exit_to_user_mode+0x5d/0x250 kernel/entry/common.c:301
 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fa8c4ad4839
Code: Unable to access opcode bytes at RIP 0x7fa8c4ad480f.
RSP: 002b:00007fa8c4291218 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: 0000000000010000 RBX: 00007fa8c4b5e408 RCX: 00007fa8c4ad4839
RDX: 00000000fffffecc RSI: 0000000020000040 RDI: 0000000000000004
RBP: 00007fa8c4b5e400 R08: 00007fa8c4290fa2 R09: 0000000000000000
R10: 0000000000000017 R11: 0000000000000246 R12: 00007fa8c4b2b1cc
R13: 676e696c69666f72 R14: 00000000fffffecc R15: 00007fa8c4b2b004
 </TASK>


addr ffffc90002cf7400 is located in stack of task syz-executor133/3508 at offset 0 in frame:
 _raw_spin_unlock_irqrestore+0x0/0x130 kernel/locking/spinlock.c:187

this frame has 1 object:
 [32, 40) 'flags.i.i.i.i'

Memory state around the buggy address:
 ffffc90002cf7300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc90002cf7380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc90002cf7400: f1 f1 f1 f1 00 f3 f3 f3 00 00 00 00 00 00 00 00
                   ^
 ffffc90002cf7480: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 00 00
 ffffc90002cf7500: 00 f3 f3 f3 f3 f3 f3 f3 00 00 00 00 00 00 00 00
==================================================================
----------------
Code disassembly (best guess):
   0:	9c                   	pushf
   1:	8f 44 24 20          	pop    0x20(%rsp)
   5:	42 80 3c 23 00       	cmpb   $0x0,(%rbx,%r12,1)
   a:	74 08                	je     0x14
   c:	4c 89 f7             	mov    %r14,%rdi
   f:	e8 a2 82 a4 f7       	call   0xf7a482b6
  14:	f6 44 24 21 02       	testb  $0x2,0x21(%rsp)
  19:	75 4e                	jne    0x69
  1b:	41 f7 c7 00 02 00 00 	test   $0x200,%r15d
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
* 2a:	e8 d7 cb 31 f7       	call   0xf731cc06 <-- trapping instruction
  2f:	65 8b 05 a8 f9 dc 75 	mov    %gs:0x75dcf9a8(%rip),%eax        # 0x75dcf9de
  36:	85 c0                	test   %eax,%eax
  38:	74 3f                	je     0x79
  3a:	48                   	rex.W
  3b:	c7                   	.byte 0xc7
  3c:	04 24                	add    $0x24,%al
  3e:	0e                   	(bad)
  3f:	36                   	ss

Crashes (280):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/04/03 12:31 linux-5.15.y 9465fef4ae35 7925100d .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2023/12/25 05:17 linux-5.15.y d93fa2c78854 fb427a07 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2023/03/21 15:40 linux-5.15.y 8020ae3c051d 7939252e .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2023/08/28 23:22 linux-5.15.y 5ddfe5cc8716 7ba13a15 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2023/05/14 08:45 linux-5.15.y b0ece631f84a 2b9ba477 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/23 20:46 linux-5.15.y 83655231580b 4c2072ee .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/23 17:50 linux-5.15.y 83655231580b 4c2072ee .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/23 06:45 linux-5.15.y 83655231580b 4d098039 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/23 03:28 linux-5.15.y 83655231580b 4d098039 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/22 09:41 linux-5.15.y 83655231580b 1014eca7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/22 08:12 linux-5.15.y 83655231580b 1014eca7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/22 06:56 linux-5.15.y 83655231580b 1014eca7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/21 22:08 linux-5.15.y 83655231580b 1014eca7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/21 21:00 linux-5.15.y 83655231580b 4c0d3ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/21 21:00 linux-5.15.y 83655231580b 4c0d3ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/21 19:36 linux-5.15.y 83655231580b 4c0d3ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/20 22:51 linux-5.15.y 83655231580b c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/20 12:10 linux-5.15.y 83655231580b c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/20 10:25 linux-5.15.y 83655231580b c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/19 18:23 linux-5.15.y 83655231580b c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/19 14:27 linux-5.15.y 83655231580b c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/19 08:33 linux-5.15.y 83655231580b c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/19 03:22 linux-5.15.y 83655231580b c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/19 03:12 linux-5.15.y 83655231580b c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/18 11:37 linux-5.15.y 83655231580b c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/18 07:59 linux-5.15.y 83655231580b c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/18 06:38 linux-5.15.y 83655231580b c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/17 23:20 linux-5.15.y 83655231580b a12e99e7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/17 22:59 linux-5.15.y 83655231580b a12e99e7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/17 20:57 linux-5.15.y 83655231580b a12e99e7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/17 02:15 linux-5.15.y 284087d4f7d5 c2e07261 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/16 15:46 linux-5.15.y 284087d4f7d5 ef5d53ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/16 13:46 linux-5.15.y 284087d4f7d5 ef5d53ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/16 09:23 linux-5.15.y 284087d4f7d5 ef5d53ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/16 05:16 linux-5.15.y 284087d4f7d5 ef5d53ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/15 18:02 linux-5.15.y 284087d4f7d5 94b087b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/15 14:39 linux-5.15.y 284087d4f7d5 94b087b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/15 07:39 linux-5.15.y 284087d4f7d5 fdb4c10c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/15 05:17 linux-5.15.y 284087d4f7d5 fdb4c10c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/14 19:21 linux-5.15.y 284087d4f7d5 fdb4c10c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/14 12:08 linux-5.15.y 284087d4f7d5 fdb4c10c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/13 14:18 linux-5.15.y 284087d4f7d5 9026e142 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/13 11:24 linux-5.15.y 284087d4f7d5 9026e142 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/13 05:36 linux-5.15.y 284087d4f7d5 9026e142 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/11 17:53 linux-5.15.y 284087d4f7d5 9026e142 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/11 14:30 linux-5.15.y 284087d4f7d5 9026e142 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/11 04:30 linux-5.15.y 284087d4f7d5 f7c35481 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/11 03:00 linux-5.15.y 284087d4f7d5 f7c35481 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/10 19:54 linux-5.15.y 284087d4f7d5 f7c35481 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/10 12:22 linux-5.15.y 284087d4f7d5 de979bc2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/10 08:31 linux-5.15.y 284087d4f7d5 de979bc2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/10 06:57 linux-5.15.y 284087d4f7d5 de979bc2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/10 05:07 linux-5.15.y 284087d4f7d5 de979bc2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/10 00:19 linux-5.15.y 284087d4f7d5 05079661 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2024/05/09 19:22 linux-5.15.y 284087d4f7d5 05079661 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
2023/03/21 15:12 linux-5.15.y 8020ae3c051d 7939252e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in profile_pc
* Struck through repros no longer work on HEAD.