BUG: unable to handle page fault for address: ffffffffffffffea #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD c891067 P4D c891067 PUD c893067 PMD 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 15261 Comm: syz.4.2631 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:dvb_device_open+0xe8/0x370 drivers/media/dvb-core/dvbdev.c:103 Code: 4c 89 e7 e8 2a 21 0e fb 4d 8b 2c 24 4d 85 ed 0f 84 5b 01 00 00 4c 89 e8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ef e8 08 21 0e fb <49> 8b 7d 00 e8 9f 3d aa fa 84 c0 0f 84 3c 01 00 00 80 7c 1d 00 00 RSP: 0018:ffffc9000d97f7b0 EFLAGS: 00010246 RAX: 1ffffffffffffffd RBX: dffffc0000000000 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 0000000000000008 RDI: 00000000ffffffff RBP: 1ffff11028df37c3 R08: ffffffff8d8ac92f R09: 1ffffffff1b15925 R10: dffffc0000000000 R11: fffffbfff1b15926 R12: ffff888146f9be18 R13: ffffffffffffffea R14: ffff8880296ba0d0 R15: ffff888146f9be00 FS: 00007fcb44e576c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffea CR3: 00000000288ea000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: chrdev_open+0x5c5/0x6a0 fs/char_dev.c:414 do_dentry_open+0x7e9/0x10d0 fs/open.c:882 do_open fs/namei.c:3634 [inline] path_openat+0x2635/0x2ee0 fs/namei.c:3791 do_filp_open+0x1f1/0x430 fs/namei.c:3818 do_sys_openat2+0x150/0x4b0 fs/open.c:1320 do_sys_open fs/open.c:1336 [inline] __do_sys_openat fs/open.c:1352 [inline] __se_sys_openat fs/open.c:1347 [inline] __x64_sys_openat+0x135/0x160 fs/open.c:1347 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fcb43f5c84e 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:00007fcb44e56b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fcb44e576c0 RCX: 00007fcb43f5c84e RDX: 0000000000000002 RSI: 00007fcb44e56c00 RDI: ffffffffffffff9c RBP: 00007fcb44e56c00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: cccccccccccccccd R13: 00007fcb44216038 R14: 00007fcb44215fa0 R15: 00007ffd59fb3f18 Modules linked in: CR2: ffffffffffffffea ---[ end trace 0000000000000000 ]--- RIP: 0010:dvb_device_open+0xe8/0x370 drivers/media/dvb-core/dvbdev.c:103 Code: 4c 89 e7 e8 2a 21 0e fb 4d 8b 2c 24 4d 85 ed 0f 84 5b 01 00 00 4c 89 e8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ef e8 08 21 0e fb <49> 8b 7d 00 e8 9f 3d aa fa 84 c0 0f 84 3c 01 00 00 80 7c 1d 00 00 RSP: 0018:ffffc9000d97f7b0 EFLAGS: 00010246 RAX: 1ffffffffffffffd RBX: dffffc0000000000 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 0000000000000008 RDI: 00000000ffffffff RBP: 1ffff11028df37c3 R08: ffffffff8d8ac92f R09: 1ffffffff1b15925 R10: dffffc0000000000 R11: fffffbfff1b15926 R12: ffff888146f9be18 R13: ffffffffffffffea R14: ffff8880296ba0d0 R15: ffff888146f9be00 FS: 00007fcb44e576c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffea CR3: 00000000288ea000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 4c 89 e7 mov %r12,%rdi 3: e8 2a 21 0e fb call 0xfb0e2132 8: 4d 8b 2c 24 mov (%r12),%r13 c: 4d 85 ed test %r13,%r13 f: 0f 84 5b 01 00 00 je 0x170 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 08 21 0e fb call 0xfb0e2132 * 2a: 49 8b 7d 00 mov 0x0(%r13),%rdi <-- trapping instruction 2e: e8 9f 3d aa fa call 0xfaaa3dd2 33: 84 c0 test %al,%al 35: 0f 84 3c 01 00 00 je 0x177 3b: 80 7c 1d 00 00 cmpb $0x0,0x0(%rbp,%rbx,1)