BUG: unable to handle page fault for address: ffffffffffffffea #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD cf35067 P4D cf35067 PUD cf37067 PMD 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 18665 Comm: syz.8.2807 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:dvb_device_open+0xeb/0x360 drivers/media/dvb-core/dvbdev.c:103 Code: 4c 89 e7 e8 57 d4 d3 fa 4d 8b 2c 24 4d 85 ed 0f 84 0b 01 00 00 4c 89 e8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ef e8 35 d4 d3 fa <49> 8b 7d 00 e8 6c 4a 68 fa 84 c0 0f 84 ec 00 00 00 80 7c 1d 00 00 RSP: 0018:ffffc90004e5f7f0 EFLAGS: 00010246 RAX: 1ffffffffffffffd RBX: dffffc0000000000 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 0000000000000008 RDI: 00000000ffffffff RBP: 1ffff11004d93b83 R08: ffffffff8df154ef R09: 1ffffffff1be2a9d R10: dffffc0000000000 R11: fffffbfff1be2a9e R12: ffff888026c9dc18 R13: ffffffffffffffea R14: ffff8880261ded28 R15: ffff888026c9dc00 FS: 00007f299c32c6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffea CR3: 000000002c4d1000 CR4: 00000000003506e0 Call Trace: 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: 0033:0x7f299b35e98e 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:00007f299c32bb28 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f299c32c6c0 RCX: 00007f299b35e98e RDX: 0000000000000002 RSI: 00007f299c32bc00 RDI: ffffffffffffff9c RBP: 00007f299c32bc00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: cccccccccccccccd R13: 00007f299b626128 R14: 00007f299b626090 R15: 00007ffe57aca9c8 Modules linked in: CR2: ffffffffffffffea ---[ end trace 0000000000000000 ]--- RIP: 0010:dvb_device_open+0xeb/0x360 drivers/media/dvb-core/dvbdev.c:103 Code: 4c 89 e7 e8 57 d4 d3 fa 4d 8b 2c 24 4d 85 ed 0f 84 0b 01 00 00 4c 89 e8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ef e8 35 d4 d3 fa <49> 8b 7d 00 e8 6c 4a 68 fa 84 c0 0f 84 ec 00 00 00 80 7c 1d 00 00 RSP: 0018:ffffc90004e5f7f0 EFLAGS: 00010246 RAX: 1ffffffffffffffd RBX: dffffc0000000000 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 0000000000000008 RDI: 00000000ffffffff RBP: 1ffff11004d93b83 R08: ffffffff8df154ef R09: 1ffffffff1be2a9d R10: dffffc0000000000 R11: fffffbfff1be2a9e R12: ffff888026c9dc18 R13: ffffffffffffffea R14: ffff8880261ded28 R15: ffff888026c9dc00 FS: 00007f299c32c6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffea CR3: 000000002c4d1000 CR4: 00000000003506e0 ---------------- Code disassembly (best guess): 0: 4c 89 e7 mov %r12,%rdi 3: e8 57 d4 d3 fa call 0xfad3d45f 8: 4d 8b 2c 24 mov (%r12),%r13 c: 4d 85 ed test %r13,%r13 f: 0f 84 0b 01 00 00 je 0x120 15: 4c 89 e8 mov %r13,%rax 18: 48 c1 e8 03 shr $0x3,%rax 1c: 80 3c 18 00 cmpb $0x0,(%rax,%rbx,1) 20: 74 08 je 0x2a 22: 4c 89 ef mov %r13,%rdi 25: e8 35 d4 d3 fa call 0xfad3d45f * 2a: 49 8b 7d 00 mov 0x0(%r13),%rdi <-- trapping instruction 2e: e8 6c 4a 68 fa call 0xfa684a9f 33: 84 c0 test %al,%al 35: 0f 84 ec 00 00 00 je 0x127 3b: 80 7c 1d 00 00 cmpb $0x0,0x0(%rbp,%rbx,1)