Hello, syzbot found the following issue on: HEAD commit: d528014517f2 Revert ".gitignore: ignore *.cover and *.mbx" git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=10953308a80000 kernel config: https://syzkaller.appspot.com/x/.config?x=d576750da57ebbb5 dashboard link: https://syzkaller.appspot.com/bug?extid=a7c205f9c1168e2f1dcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17dd0d94a80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15ea4fa0a80000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/25611d498c84/disk-d5280145.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/6cd9d0d55a7a/vmlinux-d5280145.xz kernel image: https://storage.googleapis.com/syzbot-assets/f0627705b54b/bzImage-d5280145.xz The issue was bisected to: commit ebad8e731c1c06adf04621d6fd327b860c0861b5 Author: Duoming Zhou <duoming@xxxxxxxxxx> Date: Mon Jan 23 02:04:38 2023 +0000 media: usb: siano: Fix use after free bugs caused by do_submit_urb bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=172533e8a80000 final oops: https://syzkaller.appspot.com/x/report.txt?x=14a533e8a80000 console output: https://syzkaller.appspot.com/x/log.txt?x=10a533e8a80000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+a7c205f9c1168e2f1dcc@xxxxxxxxxxxxxxxxxxxxxxxxx Fixes: ebad8e731c1c ("media: usb: siano: Fix use after free bugs caused by do_submit_urb") smsusb:smsusb_probe: board id=7, interface number 55 smsusb:smsusb_probe: board id=7, interface number 147 smsusb:smsusb_probe: board id=7, interface number 0 smsusb:siano_media_device_register: media controller created smsusb:smsusb_start_streaming: smsusb_submit_urb(...) failed ------------[ cut here ]------------ WARNING: CPU: 0 PID: 917 at kernel/workqueue.c:3379 __flush_work+0x946/0xb60 kernel/workqueue.c:3379 Modules linked in: CPU: 0 PID: 917 Comm: kworker/0:2 Not tainted 6.4.0-syzkaller-11478-gd528014517f2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 Workqueue: usb_hub_wq hub_event RIP: 0010:__flush_work+0x946/0xb60 kernel/workqueue.c:3379 Code: 00 48 c7 c6 2b 36 54 81 48 c7 c7 00 27 9a 8c e8 c0 09 12 00 e9 6f fc ff ff e8 16 a9 30 00 0f 0b e9 63 fc ff ff e8 0a a9 30 00 <0f> 0b 45 31 ed e9 54 fc ff ff e8 6b d8 83 00 e9 3e fb ff ff e8 f1 RSP: 0018:ffffc900050aebf0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff888071a480e8 RCX: 0000000000000000 RDX: ffff88801fc05940 RSI: ffffffff81543666 RDI: 0000000000000001 RBP: ffffc900050aed88 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 1ffffffff21ed137 R12: ffff888071a480e8 R13: 0000000000000001 R14: 0000000000000001 R15: ffff888071a48100 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000564a82410ac8 CR3: 000000002c52c000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> __cancel_work_timer+0x3f9/0x570 kernel/workqueue.c:3473 smsusb_stop_streaming drivers/media/usb/siano/smsusb.c:182 [inline] smsusb_start_streaming+0x33c/0x650 drivers/media/usb/siano/smsusb.c:199 smsusb_init_device+0x7f7/0xd20 drivers/media/usb/siano/smsusb.c:476 smsusb_probe+0x5b9/0x10b0 drivers/media/usb/siano/smsusb.c:567 usb_probe_interface+0x30f/0x960 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:579 [inline] really_probe+0x240/0xca0 drivers/base/dd.c:658 __driver_probe_device+0x1df/0x4b0 drivers/base/dd.c:798 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:828 __device_attach_driver+0x1d4/0x2e0 drivers/base/dd.c:956 bus_for_each_drv+0x149/0x1d0 drivers/base/bus.c:457 __device_attach+0x1e4/0x4b0 drivers/base/dd.c:1028 bus_probe_device+0x17c/0x1c0 drivers/base/bus.c:532 device_add+0x112d/0x1a40 drivers/base/core.c:3625 usb_set_configuration+0x1196/0x1bc0 drivers/usb/core/message.c:2211 usb_generic_driver_probe+0xcf/0x130 drivers/usb/core/generic.c:238 usb_probe_device+0xd8/0x2c0 drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:579 [inline] really_probe+0x240/0xca0 drivers/base/dd.c:658 __driver_probe_device+0x1df/0x4b0 drivers/base/dd.c:798 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:828 __device_attach_driver+0x1d4/0x2e0 drivers/base/dd.c:956 bus_for_each_drv+0x149/0x1d0 drivers/base/bus.c:457 __device_attach+0x1e4/0x4b0 drivers/base/dd.c:1028 bus_probe_device+0x17c/0x1c0 drivers/base/bus.c:532 device_add+0x112d/0x1a40 drivers/base/core.c:3625 usb_new_device+0xcb2/0x19d0 drivers/usb/core/hub.c:2590 hub_port_connect drivers/usb/core/hub.c:5422 [inline] hub_port_connect_change drivers/usb/core/hub.c:5566 [inline] port_event drivers/usb/core/hub.c:5726 [inline] hub_event+0x2d9e/0x4e40 drivers/usb/core/hub.c:5808 process_one_work+0xa34/0x16f0 kernel/workqueue.c:2597 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2748 kthread+0x344/0x440 kernel/kthread.c:389 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 </TASK> --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. For information about bisection process see: https://goo.gl/tpsmEJ#bisection If the bug is already fixed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to change bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
