syzbot


WARNING in syscall_exit_to_user_mode (2)

Status: closed as invalid on 2024/09/13 10:29
Subsystems: kernel
[Documentation on labels]
First crash: 116d, last: 115d
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in syscall_exit_to_user_mode kernel C done done 1 1527d 1555d 15/28 fixed on 2020/11/16 12:12

Sample crash report:
------------[ cut here ]------------
syscall 202 left IRQs disabled
WARNING: CPU: 0 PID: 5403 at kernel/entry/common.c:188 syscall_exit_to_user_mode_prepare kernel/entry/common.c:188 [inline]
WARNING: CPU: 0 PID: 5403 at kernel/entry/common.c:188 __syscall_exit_to_user_mode_work kernel/entry/common.c:205 [inline]
WARNING: CPU: 0 PID: 5403 at kernel/entry/common.c:188 syscall_exit_to_user_mode+0x25b/0x370 kernel/entry/common.c:218
Modules linked in:
CPU: 0 UID: 0 PID: 5403 Comm: syz.3.29 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:syscall_exit_to_user_mode_prepare kernel/entry/common.c:188 [inline]
RIP: 0010:__syscall_exit_to_user_mode_work kernel/entry/common.c:205 [inline]
RIP: 0010:syscall_exit_to_user_mode+0x25b/0x370 kernel/entry/common.c:218
Code: 74 0b f6 f7 c3 00 00 40 00 0f 84 5b ff ff ff e8 eb 64 78 f5 e9 51 ff ff ff 90 48 c7 c7 2b bf 08 8e 4c 89 fe e8 46 20 98 f5 90 <0f> 0b 90 90 e8 9c ea dd f5 fb f6 c3 76 0f 84 dc fd ff ff 4c 89 f7
RSP: 0018:ffffc90003bc7ed8 EFLAGS: 00010046
RAX: b443d0466822d400 RBX: 0000000000000000 RCX: ffff888062463c00
RDX: 0000000040000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90003bc7f48 R08: ffffffff8155acc2 R09: 1ffff1101720519a
R10: dffffc0000000000 R11: ffffed101720519b R12: ffff888062463c00
R13: 0000000000000000 R14: ffffc90003bc7f58 R15: 00000000000000ca
FS:  0000555593e6c500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdddbd3ff98 CR3: 00000000781ac000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f230a579e79
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffda6578398 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000000 RBX: 000000000001209f RCX: 00007f230a579e79
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f230a71613c
RBP: 00007f230a71613c R08: 00007f230a715f80 R09: 00007ffda657867f
R10: 00007ffda6578490 R11: 0000000000000246 R12: 0000000000000032
R13: 00007ffda6578490 R14: 00007ffda65784b0 R15: 000000000001206d
 </TASK>

Crashes (5):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/08/21 20:52 linux-next eb8c5ca373cb db5852f9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in syscall_exit_to_user_mode
2024/08/21 01:34 linux-next bb1b0acdcd66 9f0ab3fb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in syscall_exit_to_user_mode
2024/08/20 10:59 linux-next bb1b0acdcd66 9f0ab3fb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in syscall_exit_to_user_mode
2024/08/20 07:30 linux-next bb1b0acdcd66 9f0ab3fb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in syscall_exit_to_user_mode
2024/08/20 06:13 linux-next bb1b0acdcd66 9f0ab3fb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in syscall_exit_to_user_mode
* Struck through repros no longer work on HEAD.