comedi: valid board names for comedi_test driver are: comedi_test comedi: valid board names for comedi_bond driver are: comedi_bond 8<--- cut here --- Unable to handle kernel paging request at virtual address fee04f27 when write [fee04f27] *pgd=80000080007003, *pmd=00000000 Internal error: Oops: a06 [#1] SMP ARM Modules linked in: CPU: 0 UID: 0 PID: 11564 Comm: syz.5.1572 Tainted: G L syzkaller #0 PREEMPT Tainted: [L]=SOFTLOCKUP Hardware name: ARM-Versatile Express PC is at __raw_writeb arch/arm/include/asm/io.h:88 [inline] PC is at parport_attach drivers/comedi/drivers/comedi_parport.c:289 [inline] PC is at parport_attach+0x174/0x1d0 drivers/comedi/drivers/comedi_parport.c:224 LR is at parport_attach drivers/comedi/drivers/comedi_parport.c:289 [inline] LR is at parport_attach+0x164/0x1d0 drivers/comedi/drivers/comedi_parport.c:224 pc : [<814087e8>] lr : [<814087d8>] psr: 60000013 sp : e03e9d28 ip : e03e9d28 fp : e03e9d4c r10: 82b28ad8 r9 : 00000003 r8 : 844bbb40 r7 : e03e9d88 r6 : 844bbb40 r5 : 00000000 r4 : 00000000 r3 : fee04f27 r2 : 81e1a338 r1 : 00000001 r0 : 81408458 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: 30c5387d Table: 85a96240 DAC: fffffffd Register r0 information: non-slab/vmalloc memory Register r1 information: non-paged memory Register r2 information: non-slab/vmalloc memory Register r3 information: 0-page vmalloc region starting at 0xfee00000 allocated at pci_reserve_io+0x0/0x38 arch/arm/mm/mmu.c:1055 Register r4 information: NULL pointer Register r5 information: NULL pointer Register r6 information: slab kmalloc-192 start 844bbb40 pointer offset 0 size 192 Register r7 information: 2-page vmalloc region starting at 0xe03e8000 allocated at kernel_clone+0xac/0x3ec kernel/fork.c:2651 Register r8 information: slab kmalloc-192 start 844bbb40 pointer offset 0 size 192 Register r9 information: non-paged memory Register r10 information: non-slab/vmalloc memory Register r11 information: 2-page vmalloc region starting at 0xe03e8000 allocated at kernel_clone+0xac/0x3ec kernel/fork.c:2651 Register r12 information: 2-page vmalloc region starting at 0xe03e8000 allocated at kernel_clone+0xac/0x3ec kernel/fork.c:2651 Process syz.5.1572 (pid: 11564, stack limit = 0xe03e8000) Stack: (0xe03e9d28 to 0xe03ea000) 9d20: 82432cec 844bbb40 829d3f08 829d3f08 81e1a7f8 844bbb84 9d40: e03e9d84 e03e9d50 81404490 81408680 844bbb70 00000000 e03e9d74 20000240 9d60: 844bbb40 b5403587 844bbb70 84ca8000 40946400 00000003 e03e9e44 e03e9d88 9d80: 813ffde8 81404394 656d6f63 705f6964 6f707261 00007472 00000000 00004f27 9da0: 00000008 00010000 00000009 0000000a fefffbf6 fffffffc 0000000e 00800000 9dc0: 00100100 0000b379 00000001 00000001 fffffffe 00000404 0000000f fffffffc 9de0: 04008001 00000003 40000003 00000005 fffffff6 fff7fffe 20001e52 0400000b 9e00: 40000fff 00000000 7ffffffc 00000007 08000000 fffffff8 00000000 2dd5307a 9e20: 00000000 85a99240 844bbb40 20000240 844bbb70 84ca8000 e03e9f14 e03e9e48 9e40: 81400ddc 813ffcf4 00000000 00000000 00000000 00000000 00000000 2dd5307a 9e60: 00000000 00000000 824a35ec 0000005f 844caa30 00000064 8460ca2c 84ca8000 9e80: e03e9ee4 e03e9e90 807b7d30 807ae254 00000064 00000001 00000000 e03e9eac 9ea0: 85bfd850 83414770 00006400 0000000b e03e9ea0 00000000 00000000 2dd5307a 9ec0: 85a99240 40946400 20000240 20000240 85a99240 00000005 e03e9ef4 e03e9ee8 9ee0: 807b7e50 2dd5307a e03e9f14 40946400 00000000 85a99241 20000240 85a99240 9f00: 00000005 84ca8000 e03e9fa4 e03e9f18 805854f4 8140082c ecac8b10 84ca8000 9f20: e03e9f3c e03e9f30 81aaf27c 81aaf14c e03e9f54 e03e9f40 8025bcbc 8028e07c 9f40: e03e9fb0 40000000 e03e9f84 e03e9f58 80221a38 8025bc78 00000000 8281d17c 9f60: e03e9fb0 0014c880 ecac8b10 8022198c 00000000 2dd5307a e03e9fac 00000000 9f80: 00000000 00316310 00000036 8020029c 84ca8000 00000036 00000000 e03e9fa8 9fa0: 80200060 805853d0 00000000 00000000 00000005 40946400 20000240 00000000 9fc0: 00000000 00000000 00316310 00000036 00300000 00000000 00006364 76f190bc 9fe0: 76f18ec0 76f18eb0 0001929c 00132320 60000010 00000005 00000000 00000000 Call trace: [<81408674>] (parport_attach) from [<81404490>] (comedi_device_attach+0x108/0x250 drivers/comedi/drivers.c:1069) r6:844bbb84 r5:81e1a7f8 r4:829d3f08 [<81404388>] (comedi_device_attach) from [<813ffde8>] (do_devconfig_ioctl+0x100/0x220 drivers/comedi/comedi_fops.c:928) r10:00000003 r9:40946400 r8:84ca8000 r7:844bbb70 r6:b5403587 r5:844bbb40 r4:20000240 [<813ffce8>] (do_devconfig_ioctl) from [<81400ddc>] (comedi_unlocked_ioctl+0x5bc/0x1c2c drivers/comedi/comedi_fops.c:2240) r8:84ca8000 r7:844bbb70 r6:20000240 r5:844bbb40 r4:85a99240 [<81400820>] (comedi_unlocked_ioctl) from [<805854f4>] (vfs_ioctl fs/ioctl.c:51 [inline]) [<81400820>] (comedi_unlocked_ioctl) from [<805854f4>] (do_vfs_ioctl fs/ioctl.c:551 [inline]) [<81400820>] (comedi_unlocked_ioctl) from [<805854f4>] (__do_sys_ioctl fs/ioctl.c:595 [inline]) [<81400820>] (comedi_unlocked_ioctl) from [<805854f4>] (sys_ioctl+0x130/0xba0 fs/ioctl.c:583) r10:84ca8000 r9:00000005 r8:85a99240 r7:20000240 r6:85a99241 r5:00000000 r4:40946400 [<805853c4>] (sys_ioctl) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67) Exception stack(0xe03e9fa8 to 0xe03e9ff0) 9fa0: 00000000 00000000 00000005 40946400 20000240 00000000 9fc0: 00000000 00000000 00316310 00000036 00300000 00000000 00006364 76f190bc 9fe0: 76f18ec0 76f18eb0 0001929c 00132320 r10:00000036 r9:84ca8000 r8:8020029c r7:00000036 r6:00316310 r5:00000000 r4:00000000 Code: e596306c e3a04000 e7f33053 e2433612 (e5c34000) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: e596306c ldr r3, [r6, #108] @ 0x6c 4: e3a04000 mov r4, #0 8: e7f33053 ubfx r3, r3, #0, #20 c: e2433612 sub r3, r3, #18874368 @ 0x1200000 * 10: e5c34000 strb r4, [r3] <-- trapping instruction