WARNING: CPU: 0 PID: 18691 at kernel/locking/mutex.c:582 __mutex_lock_common kernel/locking/mutex.c:582 [inline] WARNING: CPU: 0 PID: 18691 at kernel/locking/mutex.c:582 __mutex_lock+0xb48/0xc80 kernel/locking/mutex.c:747 Modules linked in: CPU: 0 PID: 18691 Comm: syz.0.2770 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:582 [inline] RIP: 0010:__mutex_lock+0xb48/0xc80 kernel/locking/mutex.c:747 Code: 04 08 84 c0 0f 85 2f 01 00 00 83 3d a1 63 f2 03 00 0f 85 d1 f5 ff ff 48 c7 c7 80 b7 ca 8a 48 c7 c6 20 b8 ca 8a e8 a8 4c b7 f6 <0f> 0b e9 b7 f5 ff ff 0f 0b e9 75 f9 ff ff 0f 0b e9 4f f6 ff ff 48 RSP: 0018:ffffc90003aa7580 EFLAGS: 00010246 RAX: 22f8a639cdbdd100 RBX: ffff88807dba2010 RCX: 0000000000080000 RDX: ffffc90004e29000 RSI: 0000000000003632 RDI: 0000000000003633 RBP: ffffc90003aa76d8 R08: ffff8880b8f28c53 R09: 1ffff110171e518a R10: dffffc0000000000 R11: ffffed10171e518b R12: 1ffff92000754ec0 R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000 FS: 00007f6d81b4e6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c44abdc CR3: 000000006413f000 CR4: 00000000003506f0 Call Trace: as102_stream_ctrl+0x27/0xb0 drivers/media/usb/as102/as102_drv.c:259 dvb_frontend_open+0x7f5/0x13a0 drivers/media/dvb-core/dvb_frontend.c:2830 dvb_device_open+0x270/0x360 drivers/media/dvb-core/dvbdev.c:109 chrdev_open+0x58c/0x600 fs/char_dev.c:414 do_dentry_open+0x880/0x14b0 fs/open.c:929 do_open fs/namei.c:3683 [inline] path_openat+0x284f/0x3270 fs/namei.c:3844 do_filp_open+0x1f2/0x430 fs/namei.c:3871 do_sys_openat2+0x134/0x1d0 fs/open.c:1422 do_sys_open fs/open.c:1437 [inline] __do_sys_openat fs/open.c:1453 [inline] __se_sys_openat fs/open.c:1448 [inline] __x64_sys_openat+0x139/0x160 fs/open.c:1448 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f6d80b5e98e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007f6d81b4db28 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f6d81b4e6c0 RCX: 00007f6d80b5e98e RDX: 0000000000000802 RSI: 00007f6d81b4dc00 RDI: ffffffffffffff9c RBP: 00007f6d81b4dc00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: cccccccccccccccd R13: 00007f6d80e26038 R14: 00007f6d80e25fa0 R15: 00007fff7437ffe8