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general protection fault in dvb_usbv2_generic_write

Status: upstream: reported C repro on 2024/09/13 13:35
Subsystems: usb media
[Documentation on labels]
Reported-by: syzbot+f9f5333782a854509322@syzkaller.appspotmail.com
First crash: 535d, last: 4d20h
Cause bisection: failed (error log, bisect log)
  
▶ ▼ Discussions (11)
Title Replies (including bot) Last reply
[syzbot] Monthly media report (Jan 2026) 0 (1) 2026/01/29 11:51
[syzbot] Monthly media report (Dec 2025) 0 (1) 2025/12/29 10:38
[PATCH v2 2/2] media: mxl111sf: fix i2c race condition during device probe 1 (1) 2025/11/07 18:16
[PATCH 2/2] media: mxl111sf: fix i2c race condition during device probe 1 (1) 2025/11/07 15:44
[syzbot] Monthly media report (Oct 2025) 0 (1) 2025/10/27 12:50
[syzbot] Monthly media report (Aug 2025) 0 (1) 2025/08/26 07:14
[syzbot] Monthly media report (Jul 2025) 0 (1) 2025/07/26 20:43
[syzbot] Monthly media report (Jun 2025) 0 (1) 2025/06/24 13:52
[syzbot] Monthly media report (Apr 2025) 0 (1) 2025/04/23 07:50
[syzbot] [media?] general protection fault in dvb_usbv2_generic_write 0 (2) 2025/04/14 14:20
[syzbot] Monthly media report (Feb 2025) 0 (1) 2025/02/19 12:35
▶ ▼ Similar bugs (4)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 general protection fault in dvb_usbv2_generic_write origin:upstream 2 C 29 11d 123d 0/3 upstream: reported C repro on 2025/10/25 16:29
linux-6.1 general protection fault in dvb_usbv2_generic_write 2 1 323d 323d 0/3 auto-obsoleted due to no activity on 2025/07/18 07:04
linux-6.1 general protection fault in dvb_usbv2_generic_write (2) origin:upstream 2 C error 3 62d 62d 0/3 upstream: reported C repro on 2025/12/25 21:19
linux-6.6 general protection fault in dvb_usbv2_generic_write origin:upstream 2 C error 3 62d 62d 0/2 upstream: reported C repro on 2025/12/25 21:19
▶ ▼ Last patch testing requests (5)
Created Duration User Patch Repo Result
2025/11/09 09:40 20m retest repro linux-next report log
2025/11/09 09:40 22m retest repro linux-next report log
2025/11/09 09:40 28m retest repro linux-next report log
2025/08/05 05:24 17m retest repro upstream report log
2025/05/01 16:49 16m retest repro upstream report log

Sample crash report:
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000019: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x00000000000000c8-0x00000000000000cf]
CPU: 1 UID: 0 PID: 6077 Comm: syz.3.22 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:593 [inline]
RIP: 0010:__mutex_lock+0x14b/0x1300 kernel/locking/mutex.c:776
Code: 80 44 26 9a 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 e4 0f 00 00 83 3d 73 de 79 0e 00 75 23 49 8d 7c 24 60 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 05 e8 19 2a 83 f6 4d 39 64 24 60 0f 85 10 0f 00
RSP: 0018:ffffc90002717260 EFLAGS: 00010202
RAX: 0000000000000019 RBX: 1ffff920004e2e64 RCX: ffffffff9a264403
RDX: 0000000000000000 RSI: ffffffff8e15aa1f RDI: 00000000000000c8
RBP: ffffc90002717418 R08: ffffc90002717387 R09: 0000000000000000
R10: ffffc90002717360 R11: fffff520004e2e71 R12: 0000000000000068
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  0000555590021500(0000) GS:ffff888125572000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30563fff CR3: 000000005e1b6000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 dvb_usbv2_generic_write+0x26/0x60 drivers/media/usb/dvb-usb-v2/dvb_usb_urb.c:77
 mxl111sf_ctrl_msg+0x160/0x2f0 drivers/media/usb/dvb-usb-v2/mxl111sf.c:73
 mxl111sf_write_reg+0xa9/0x1b0 drivers/media/usb/dvb-usb-v2/mxl111sf.c:123
 mxl111sf_i2c_start drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c:130 [inline]
 mxl111sf_i2c_sw_xfer_msg drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c:-1 [inline]
 mxl111sf_i2c_xfer+0x496/0x5100 drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c:813
 __i2c_transfer+0x79a/0x2020 drivers/i2c/i2c-core-base.c:-1
 i2c_transfer+0x1cc/0x2d0 drivers/i2c/i2c-core-base.c:2317
 i2c_transfer_buffer_flags+0x10d/0x1a0 drivers/i2c/i2c-core-base.c:2345
 i2c_master_recv include/linux/i2c.h:79 [inline]
 i2cdev_read+0x10d/0x250 drivers/i2c/i2c-dev.c:155
 vfs_read+0x20c/0xa70 fs/read_write.c:572
 ksys_read+0x150/0x270 fs/read_write.c:717
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9c16d9bf79
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc48db29b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f9c17015fa0 RCX: 00007f9c16d9bf79
RDX: 0000000000000063 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007f9c16e327e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9c17015fac R14: 00007f9c17015fa0 R15: 00007f9c17015fa0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:593 [inline]
RIP: 0010:__mutex_lock+0x14b/0x1300 kernel/locking/mutex.c:776
Code: 80 44 26 9a 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 e4 0f 00 00 83 3d 73 de 79 0e 00 75 23 49 8d 7c 24 60 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 05 e8 19 2a 83 f6 4d 39 64 24 60 0f 85 10 0f 00
RSP: 0018:ffffc90002717260 EFLAGS: 00010202

RAX: 0000000000000019 RBX: 1ffff920004e2e64 RCX: ffffffff9a264403
RDX: 0000000000000000 RSI: ffffffff8e15aa1f RDI: 00000000000000c8
RBP: ffffc90002717418 R08: ffffc90002717387 R09: 0000000000000000
R10: ffffc90002717360 R11: fffff520004e2e71 R12: 0000000000000068
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  0000555590021500(0000) GS:ffff888125572000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff151b9a432 CR3: 000000005e1b6000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	80 44 26 9a 48       	addb   $0x48,-0x66(%rsi,%riz,1)
   5:	c1 e8 03             	shr    $0x3,%eax
   8:	42 0f b6 04 28       	movzbl (%rax,%r13,1),%eax
   d:	84 c0                	test   %al,%al
   f:	0f 85 e4 0f 00 00    	jne    0xff9
  15:	83 3d 73 de 79 0e 00 	cmpl   $0x0,0xe79de73(%rip)        # 0xe79de8f
  1c:	75 23                	jne    0x41
  1e:	49 8d 7c 24 60       	lea    0x60(%r12),%rdi
  23:	48 89 f8             	mov    %rdi,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2f:	74 05                	je     0x36
  31:	e8 19 2a 83 f6       	call   0xf6832a4f
  36:	4d 39 64 24 60       	cmp    %r12,0x60(%r12)
  3b:	0f                   	.byte 0xf
  3c:	85 10                	test   %edx,(%rax)
  3e:	0f                   	.byte 0xf

Crashes (123):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/02/14 18:45 upstream 770aaedb461a 1e62d198 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce general protection fault in dvb_usbv2_generic_write
2025/04/14 14:20 upstream 8ffd015db85f 0bd6db41 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce general protection fault in dvb_usbv2_generic_write
2025/12/28 18:40 linux-next cc3aa43b44bd d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in dvb_usbv2_generic_write
2025/12/28 18:02 linux-next cc3aa43b44bd d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in dvb_usbv2_generic_write
2025/10/26 09:31 linux-next 72fb0170ef1f c0460fcd .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in dvb_usbv2_generic_write
2025/10/26 06:41 linux-next 72fb0170ef1f c0460fcd .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in dvb_usbv2_generic_write
2025/10/26 05:47 linux-next 72fb0170ef1f c0460fcd .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in dvb_usbv2_generic_write
2026/02/14 03:07 upstream cd7a5651db26 1e62d198 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in dvb_usbv2_generic_write
2026/02/10 18:17 upstream 72c395024dac 91d776d3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce general protection fault in dvb_usbv2_generic_write
2026/01/29 06:53 upstream 8dfce8991b95 b78a7341 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce general protection fault in dvb_usbv2_generic_write
2026/01/23 14:44 upstream c072629f05d7 3181850c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce general protection fault in dvb_usbv2_generic_write
2026/01/15 14:55 upstream 944aacb68baf d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce general protection fault in dvb_usbv2_generic_write
2026/01/02 04:22 upstream b69053dd3ffb d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce general protection fault in dvb_usbv2_generic_write
2025/12/26 09:25 upstream ccd1cdca5cd4 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root general protection fault in dvb_usbv2_generic_write
2025/12/26 06:53 upstream ccd1cdca5cd4 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce general protection fault in dvb_usbv2_generic_write
2025/12/25 23:12 upstream ccd1cdca5cd4 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root general protection fault in dvb_usbv2_generic_write
2025/12/25 21:18 upstream ccd1cdca5cd4 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce general protection fault in dvb_usbv2_generic_write
2025/12/21 08:36 upstream d8ba32c5a460 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root general protection fault in dvb_usbv2_generic_write
2025/12/01 10:50 upstream 7d0a66e4bb90 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root general protection fault in dvb_usbv2_generic_write
2025/11/29 06:36 upstream 6cf62f0174de d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce general protection fault in dvb_usbv2_generic_write
2025/11/26 14:05 upstream 30f09200cc4a d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce general protection fault in dvb_usbv2_generic_write
2025/10/19 22:22 upstream d9043c79ba68 1c8c8cd8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root general protection fault in dvb_usbv2_generic_write
2025/10/06 22:51 upstream fd94619c4336 91305dbe .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root general protection fault in dvb_usbv2_generic_write
2025/10/01 00:09 upstream 30d4efb2f5a5 65a0eece .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root general protection fault in dvb_usbv2_generic_write
2025/08/29 05:34 upstream 07d9df80082b 3e1beec6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce general protection fault in dvb_usbv2_generic_write
2025/08/12 20:42 upstream 53e760d89498 c06e8995 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce general protection fault in dvb_usbv2_generic_write
2025/07/21 23:30 upstream 89be9a83ccf1 0b3788a0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce general protection fault in dvb_usbv2_generic_write
2025/07/19 05:40 upstream d786aba32000 f550e092 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root general protection fault in dvb_usbv2_generic_write
2025/07/16 14:44 upstream 155a3c003e55 c118d736 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce general protection fault in dvb_usbv2_generic_write
2025/07/13 07:32 upstream 3f31a806a62e 3cda49cf .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root general protection fault in dvb_usbv2_generic_write
2026/02/21 17:54 upstream a95f71ad3e2e 6e7b5511 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 general protection fault in dvb_usbv2_generic_write
2026/02/21 13:26 upstream a95f71ad3e2e 6e7b5511 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 general protection fault in dvb_usbv2_generic_write
2026/01/27 20:03 upstream fcb70a56f4d8 9a514c2f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 general protection fault in dvb_usbv2_generic_write
2025/12/27 01:30 upstream 3f0e9c8cefa9 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 general protection fault in dvb_usbv2_generic_write
2025/12/08 10:52 upstream c2f2b01b74be d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 general protection fault in dvb_usbv2_generic_write
2025/11/21 05:51 upstream 8e621c9a3375 280ea308 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 general protection fault in dvb_usbv2_generic_write
2025/10/12 19:37 upstream 67029a49db6c ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 general protection fault in dvb_usbv2_generic_write
2025/08/08 19:28 upstream bec077162bd0 987b750d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 general protection fault in dvb_usbv2_generic_write
2024/09/08 23:01 upstream 5dadc1be8fc5 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 general protection fault in dvb_usbv2_generic_write
2026/02/16 12:11 linux-next 635c467cc14e 1e62d198 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in dvb_usbv2_generic_write
2026/02/09 00:27 linux-next 9845cf73f7db 4c131dc4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in dvb_usbv2_generic_write
2026/01/14 01:05 linux-next 0f853ca2a798 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in dvb_usbv2_generic_write
2026/01/13 15:19 linux-next 0f853ca2a798 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in dvb_usbv2_generic_write
2026/01/13 14:05 linux-next 0f853ca2a798 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in dvb_usbv2_generic_write
2026/01/01 10:09 linux-next cc3aa43b44bd d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in dvb_usbv2_generic_write
2026/01/01 02:04 linux-next cc3aa43b44bd d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in dvb_usbv2_generic_write
2025/12/31 23:41 linux-next cc3aa43b44bd d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in dvb_usbv2_generic_write
2025/12/31 11:17 linux-next cc3aa43b44bd d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in dvb_usbv2_generic_write
2025/12/30 18:07 linux-next cc3aa43b44bd d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in dvb_usbv2_generic_write
2025/12/30 14:35 linux-next cc3aa43b44bd d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in dvb_usbv2_generic_write
2025/12/30 13:02 linux-next cc3aa43b44bd d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in dvb_usbv2_generic_write
2025/12/26 19:09 linux-next cc3aa43b44bd d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in dvb_usbv2_generic_write
2025/12/25 12:14 linux-next cc3aa43b44bd d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in dvb_usbv2_generic_write
2025/11/23 09:47 linux-next d724c6f85e80 4fb8ef37 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in dvb_usbv2_generic_write
2025/11/12 01:03 linux-next 2666975a8905 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in dvb_usbv2_generic_write
2025/09/27 01:27 linux-next 262858079afd 001c9061 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in dvb_usbv2_generic_write
2025/08/08 03:40 linux-next 442d93313cae 6a893178 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in dvb_usbv2_generic_write
* Struck through repros no longer work on HEAD.