syzbot


BUG: spinlock recursion in handle_bug

Status: closed as invalid on 2024/09/06 13:56
Subsystems: kernel
[Documentation on labels]
First crash: 158d, last: 158d

Sample crash report:
BUG: spinlock recursion on CPU#1, syz.1.49/5506
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5506 at arch/x86/include/asm/entry-common.h:42 arch_enter_from_user_mode arch/x86/include/asm/entry-common.h:42 [inline]
WARNING: CPU: 0 PID: 5506 at arch/x86/include/asm/entry-common.h:42 enter_from_user_mode include/linux/entry-common.h:108 [inline]
WARNING: CPU: 0 PID: 5506 at arch/x86/include/asm/entry-common.h:42 irqentry_enter_from_user_mode+0x99/0xe0 kernel/entry/common.c:225
Modules linked in:
CPU: 0 UID: 0 PID: 5506 Comm: syz.1.49 Not tainted 6.11.0-rc4-next-20240823-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 23d6:irqentry_enter_from_user_mode+0x99/0xe0
RSP: 9045:ffffffff8c0b9042 EFLAGS: fffffffc
RAX: ffff88802036da00 RBX: ffffc90008feee68 RCX: ffffc90008feff58
RDX: 0000000000000000 RSI: 0000000000000010 RDI: ffffc90008feee68
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88802036da00
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000010
FS:  00007f01201546c0 GS:  0000000000000000
Kernel panic - not syncing: kernel: panic_on_warn set ...
CPU: 0 UID: 0 PID: 5506 Comm: syz.1.49 Not tainted 6.11.0-rc4-next-20240823-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 panic+0x349/0x880 kernel/panic.c:354
 __warn+0x34b/0x4e0
 __report_bug lib/bug.c:199 [inline]
 report_bug+0x2b3/0x500 lib/bug.c:219
 handle_bug+0x60/0x90 arch/x86/kernel/traps.c:285
 exc_invalid_op+0x1a/0x50 arch/x86/kernel/traps.c:309
 asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:621
RIP: 23d6:irqentry_enter_from_user_mode+0x99/0xe0
RSP: 9045:ffffffff8c0b9042 EFLAGS: fffffffc
RAX: ffff88802036da00 RBX: ffffc90008feee68 RCX: ffffc90008feff58
RDX: 0000000000000000 RSI: 0000000000000010 RDI: ffffc90008feee68
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88802036da00
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000010
 </TASK>
Shutting down cpus with NMI
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/08/23 10:08 linux-next c79c85875f1a ce8a9099 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: spinlock recursion in handle_bug
* Struck through repros no longer work on HEAD.