Hello developers, We hit this issue when fuzzing the usb module with Syzkaller. HEAD commit: 819837584309 6.12.0-rc5 git tree: upstream kernel config: https://drive.google.com/file/d/1-9pltE-1CMgGgNFu9o5l0BlCHk3Rnzb_/view?usp=drive_link console output: https://drive.google.com/file/d/1X-kcCiTBxVr62OXExiOnJIuMVHeyUm4o/view?usp=sharing syz repro: https://drive.google.com/file/d/1baQYznawknskJBUNWhAl0cgckV5m0_ih/view?usp=sharing C reproducer: https://drive.google.com/file/d/1nK_keaTF9vMxqD_SVMWXlZOno4CUyl17/view?usp=sharing A similar but not identical problem has been found: https://lore.kernel.org/all/000000000000922b0b0619de5b8f@xxxxxxxxxx/T/. And an ad-hoc patch is proposed: https://syzkaller.appspot.com/text?tag=Patch&x=1209fabc980000. Environment: Ubuntu 22.04 on Linux 5.15 QEMU emulator version 6.2.0 qemu-system-x86_64 \ -m 2G \ -smp 2 \ -kernel /home/wd/bzImage \ -append "console=ttyS0 root=/dev/sda earlyprintk=serial net.ifnames=0" \ -drive file=/home/wd/bullseye.img,format=raw \ -net user,host=10.0.2.10,hostfwd=tcp:127.0.0.1:10021-:22 \ -net nic,model=e1000 \ -enable-kvm \ -nographic \ -pidfile vm.pid \ 2>&1 | tee vm.log If you fix this issue, please add the following tag to the commit: Reported-by: Shihao Jiang<sh.jiang@xxxxxxxxxx> ==================================================== WARNING: CPU: 0 PID: 9 at mm/slub.c:4689 free_large_kmalloc+0xc5/0x120 mm/slub.c:4689 Modules linked in: CPU: 0 UID: 0 PID: 9 Comm: kworker/0:1 Tainted: G W 6.12.0-rc5 #1 Tainted: [W]=WARN Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 Workqueue: usb_hub_wq hub_event RIP: 0010:free_large_kmalloc+0xc5/0x120 mm/slub.c:4689 Code: 11 78 b2 ff 44 89 e2 be 06 00 00 00 48 89 ef e8 51 cd 12 00 e8 2c 76 b2 ff eb bf 5b 48 89 ef 5d 41 5c 41 5d e9 4c 5c e3 ff 90 <0f> 0b 90 80 3d 73 eb 24 0e 00 74 31 48 8b 74 24 20 4c 89 e7 41 bc RSP: 0018:ffffc900003aee58 EFLAGS: 00010246 RAX: 04fff00000000000 RBX: 0000000000000100 RCX: ffffc90008251000 RDX: 0000000000000000 RSI: ffff8880514e2000 RDI: ffffea0001453880 RBP: ffffea0001453880 R08: 0000000000000001 R09: ffffed1003d85480 R10: 0000000000000000 R11: ffffffff81004eba R12: ffff8880514e2000 R13: ffff888029e27000 R14: dffffc0000000000 R15: ffff88802b1380f0 FS: 0000000000000000(0000) GS:ffff88802b800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f06340190f0 CR3: 000000007cff2000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> urb_destroy drivers/usb/core/urb.c:25 [inline] kref_put include/linux/kref.h:65 [inline] usb_free_urb+0xef/0x100 drivers/usb/core/urb.c:97 smsusb_term_device+0x108/0x1e0 drivers/media/usb/siano/smsusb.c:352 smsusb_init_device+0x935/0xe00 drivers/media/usb/siano/smsusb.c:497 smsusb_probe+0x5b1/0x1070 drivers/media/usb/siano/smsusb.c:575 usb_probe_interface+0x314/0x9f0 drivers/usb/core/driver.c:399 call_driver_probe drivers/base/dd.c:579 [inline] really_probe+0x252/0xa90 drivers/base/dd.c:658 __driver_probe_device+0x1df/0x450 drivers/base/dd.c:800 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:830 __device_attach_driver+0x1db/0x2f0 drivers/base/dd.c:958 bus_for_each_drv+0x14c/0x1d0 drivers/base/bus.c:459 __device_attach+0x1f2/0x4c0 drivers/base/dd.c:1030 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:534 device_add+0x110b/0x1a20 drivers/base/core.c:3675 usb_set_configuration+0x11c0/0x1c90 drivers/usb/core/message.c:2210 usb_generic_driver_probe+0xb7/0x110 drivers/usb/core/generic.c:254 usb_probe_device+0xed/0x3e0 drivers/usb/core/driver.c:294 call_driver_probe drivers/base/dd.c:579 [inline] really_probe+0x252/0xa90 drivers/base/dd.c:658 __driver_probe_device+0x1df/0x450 drivers/base/dd.c:800 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:830 __device_attach_driver+0x1db/0x2f0 drivers/base/dd.c:958 bus_for_each_drv+0x14c/0x1d0 drivers/base/bus.c:459 __device_attach+0x1f2/0x4c0 drivers/base/dd.c:1030 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:534 device_add+0x110b/0x1a20 drivers/base/core.c:3675 usb_new_device+0xd46/0x1990 drivers/usb/core/hub.c:2651 hub_port_connect drivers/usb/core/hub.c:5521 [inline] hub_port_connect_change drivers/usb/core/hub.c:5661 [inline] port_event drivers/usb/core/hub.c:5821 [inline] hub_event+0x2c3b/0x4cd0 drivers/usb/core/hub.c:5903 process_one_work+0x95a/0x1b20 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x677/0xe90 kernel/workqueue.c:3391 kthread+0x2ca/0x3b0 kernel/kthread.c:389 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 </TASK> ==================================================== Best Regards, Shihao.
