syzbot


BUG: unable to handle kernel NULL pointer dereference in __bad_area_nosemaphore

Status: closed as invalid on 2024/09/13 11:13
Subsystems: kernel
[Documentation on labels]
First crash: 182d, last: 180d

Sample crash report:
BUG: kernel NULL pointer dereference, address: 00000000000000af
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 800000006c5ab067 P4D 800000006c5ab067 PUD 5fd53067 PMD 0 
Oops: Oops: 0010 [#1] PREEMPT SMP KASAN PTI
CPU: 1 UID: 0 PID: 6032 Comm: syz.4.141 Not tainted 6.11.0-rc4-next-20240821-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:0xaf
Code: Unable to access opcode bytes at 0x85.
RSP: 0018:ffffc9000318f438 EFLAGS: 00010093
RAX: ffffffff8155a3b8 RBX: 0000000000000000 RCX: ffff888027181e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000318f5f0 R08: ffffffff8155a398 R09: 1ffffffff2038799
R10: dffffc0000000000 R11: fffffbfff203879a R12: 1ffff92000631e98
R13: dffffc0000000000 R14: ffff888027182900 R15: 0000000000000011
FS:  0000555593100500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000000000af CR3: 000000007b844000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __bad_area_nosemaphore+0x118/0x770 arch/x86/mm/fault.c:785
 handle_page_fault arch/x86/mm/fault.c:1479 [inline]
 exc_page_fault+0x5c8/0x8c0 arch/x86/mm/fault.c:1539
 </TASK>
Modules linked in:
CR2: 00000000000000af
---[ end trace 0000000000000000 ]---
RIP: 0010:0xaf
Code: Unable to access opcode bytes at 0x85.
RSP: 0018:ffffc9000318f438 EFLAGS: 00010093
RAX: ffffffff8155a3b8 RBX: 0000000000000000 RCX: ffff888027181e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000318f5f0 R08: ffffffff8155a398 R09: 1ffffffff2038799
R10: dffffc0000000000 R11: fffffbfff203879a R12: 1ffff92000631e98
R13: dffffc0000000000 R14: ffff888027182900 R15: 0000000000000011
FS:  0000555593100500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000000000af CR3: 000000007b844000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/08/22 00:11 linux-next eb8c5ca373cb ca02180f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: unable to handle kernel NULL pointer dereference in __bad_area_nosemaphore
2024/08/20 13:04 linux-next bb1b0acdcd66 9f0ab3fb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: unable to handle kernel NULL pointer dereference in __bad_area_nosemaphore
* Struck through repros no longer work on HEAD.