syzbot


WARNING in raw_ioctl

Status: upstream: reported C repro on 2025/10/29 16:52
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+38d63b587d0e251d2f26@syzkaller.appspotmail.com
First crash: 15d, last: 10h48m
Bug presence (1)
Date Name Commit Repro Result
2025/10/31 upstream (ToT) d127176862a9 C [report] WARNING in raw_ioctl
Similar bugs (3)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.6 WARNING in raw_ioctl origin:upstream -1 C 22 4d13h 15d 0/2 upstream: reported C repro on 2025/10/29 17:15
linux-6.1 WARNING in raw_ioctl origin:upstream -1 C 17 3d11h 15d 0/3 upstream: reported C repro on 2025/10/29 18:33
upstream WARNING in raw_ioctl mm -1 C 311 8h46m 20d 0/29 upstream: reported C repro on 2025/10/24 23:11

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 4335 at mm/page_alloc.c:5462 current_gfp_context include/linux/sched/mm.h:-1 [inline]
WARNING: CPU: 0 PID: 4335 at mm/page_alloc.c:5462 __alloc_pages+0x391/0x470 mm/page_alloc.c:5474
Modules linked in:
CPU: 0 PID: 4335 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:__alloc_pages+0x391/0x470 mm/page_alloc.c:5462
Code: 31 ff e9 b2 fe ff ff e8 fd e6 f6 07 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 50 fd ff ff 4c 89 e7 e8 34 ad 09 00 e9 43 fd ff ff <0f> 0b 45 31 ff e9 ef fe ff ff 65 44 8b 2d 55 8e 4f 7e 41 83 fd 08
RSP: 0018:ffffc9000339fa60 EFLAGS: 00010246
RAX: ffffc9000339faa0 RBX: 1ffff92000673f50 RCX: 0000000000000000
RDX: 0000000000000028 RSI: 0000000000000000 RDI: ffffc9000339fac8
RBP: ffffc9000339fb58 R08: dffffc0000000000 R09: ffffc9000339faa0
R10: fffff52000673f59 R11: 1ffff92000673f54 R12: dffffc0000000000
R13: 0000000000000000 R14: 0000000000040cc0 R15: 0000000000000013
FS:  000055558984d500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffec2b72fe8 CR3: 00000000297fa000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kmalloc_order+0x40/0x150 mm/slab_common.c:986
 kmalloc_order_trace+0x14/0xf0 mm/slab_common.c:1002
 kmalloc include/linux/slab.h:612 [inline]
 raw_alloc_io_data drivers/usb/gadget/legacy/raw_gadget.c:626 [inline]
 raw_ioctl_ep_read drivers/usb/gadget/legacy/raw_gadget.c:1110 [inline]
 raw_ioctl+0x1600/0x3560 drivers/usb/gadget/legacy/raw_gadget.c:1274
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0xfa/0x170 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fa1b9f33fc9
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:00007ffec2b75818 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fa1ba18afa0 RCX: 00007fa1b9f33fc9
RDX: 00002000000000c0 RSI: 00000000c0085508 RDI: 0000000000000004
RBP: 00007fa1b9fb6f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa1ba18afa0 R14: 00007fa1ba18afa0 R15: 0000000000000003
 </TASK>

Crashes (22):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/10/30 04:16 linux-5.15.y cc5ec8769306 fd2207e7 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in raw_ioctl
2025/11/14 03:50 linux-5.15.y cc5ec8769306 07e030de .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in raw_ioctl
2025/11/14 03:50 linux-5.15.y cc5ec8769306 07e030de .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in raw_ioctl
2025/11/09 16:59 linux-5.15.y cc5ec8769306 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in raw_ioctl
2025/11/09 16:59 linux-5.15.y cc5ec8769306 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in raw_ioctl
2025/11/09 13:56 linux-5.15.y cc5ec8769306 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in raw_ioctl
2025/11/09 13:55 linux-5.15.y cc5ec8769306 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in raw_ioctl
2025/11/05 16:25 linux-5.15.y cc5ec8769306 a6c9c731 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in raw_ioctl
2025/11/05 16:23 linux-5.15.y cc5ec8769306 a6c9c731 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in raw_ioctl
2025/11/04 11:39 linux-5.15.y cc5ec8769306 686bf657 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in raw_ioctl
2025/11/04 11:39 linux-5.15.y cc5ec8769306 686bf657 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in raw_ioctl
2025/10/31 07:04 linux-5.15.y cc5ec8769306 2c50b6a9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in raw_ioctl
2025/10/31 07:04 linux-5.15.y cc5ec8769306 2c50b6a9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in raw_ioctl
2025/10/31 04:30 linux-5.15.y cc5ec8769306 2c50b6a9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in raw_ioctl
2025/10/31 04:29 linux-5.15.y cc5ec8769306 2c50b6a9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in raw_ioctl
2025/10/29 23:56 linux-5.15.y cc5ec8769306 fd2207e7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in raw_ioctl
2025/10/29 23:56 linux-5.15.y cc5ec8769306 fd2207e7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in raw_ioctl
2025/10/29 23:26 linux-5.15.y cc5ec8769306 fd2207e7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in raw_ioctl
2025/10/29 21:39 linux-5.15.y cc5ec8769306 fd2207e7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in raw_ioctl
2025/10/29 20:39 linux-5.15.y cc5ec8769306 fd2207e7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in raw_ioctl
2025/10/29 16:52 linux-5.15.y cc5ec8769306 fd2207e7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in raw_ioctl
2025/10/29 16:52 linux-5.15.y cc5ec8769306 fd2207e7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in raw_ioctl
* Struck through repros no longer work on HEAD.