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 fee00078 when write [fee00078] *pgd=80000080007003, *pmd=00000000 Internal error: Oops: a06 [#1] SMP ARM Modules linked in: CPU: 1 UID: 0 PID: 5859 Comm: syz.0.265 Not tainted syzkaller #0 PREEMPT Hardware name: ARM-Versatile Express PC is at __raw_writeb arch/arm/include/asm/io.h:99 [inline] PC is at parport_attach drivers/comedi/drivers/comedi_parport.c:291 [inline] PC is at parport_attach+0x184/0x1e0 drivers/comedi/drivers/comedi_parport.c:224 LR is at parport_attach drivers/comedi/drivers/comedi_parport.c:291 [inline] LR is at parport_attach+0x174/0x1e0 drivers/comedi/drivers/comedi_parport.c:224 pc : [<8148f264>] lr : [<8148f254>] psr: 60000013 sp : ea809d30 ip : ea809d30 fp : ea809d54 r10: 82d30dfc r9 : 00000003 r8 : 831d09c0 r7 : ea809d90 r6 : 831d09c0 r5 : 00000000 r4 : 00000000 r3 : fee00078 r2 : 81e2db28 r1 : 00000001 r0 : 8148eec4 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none Control: 30c5387d Table: 84079c00 DAC: 00000000 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:1048 Register r4 information: NULL pointer Register r5 information: NULL pointer Register r6 information: slab kmalloc-192 start 831d09c0 pointer offset 0 size 192 Register r7 information: 2-page vmalloc region starting at 0xea808000 allocated at kernel_clone+0xc4/0x43c kernel/fork.c:2746 Register r8 information: slab kmalloc-192 start 831d09c0 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 0xea808000 allocated at kernel_clone+0xc4/0x43c kernel/fork.c:2746 Register r12 information: 2-page vmalloc region starting at 0xea808000 allocated at kernel_clone+0xc4/0x43c kernel/fork.c:2746 Process syz.0.265 (pid: 5859, stack limit = 0xea808000) Stack: (0xea809d30 to 0xea80a000) 9d20: ffffffff 00000004 82bd8e44 82bd8e44 9d40: 81e2dfe8 00000000 ea809d8c ea809d58 8148ade0 8148f0ec 40946400 00000000 9d60: ea809d7c 20000600 831d09c0 b5403587 40946400 00000003 00000003 855f6200 9d80: ea809e4c ea809d90 814865e4 8148ace4 656d6f63 705f6964 6f707261 00007472 9da0: 00000000 00000078 00000000 00000000 0000000c 00000008 00000006 00100002 9dc0: 00000007 00000005 00000100 00000004 00000001 00000001 00020003 00000000 9de0: 00000101 00000083 80000000 00000003 00001b18 00000016 00000004 00000000 9e00: ffffffff 0000000b 00000004 0000003b 0000000c 10000006 00000664 fffffff8 9e20: 00000000 7c1217e9 00000000 83e96680 831d09c0 20000600 40946400 00000003 9e40: ea809f14 ea809e50 8148790c 81486524 00000000 7c1217e9 00000000 00000000 9e60: 8254880c ea809ea4 0000005f 8477d678 00000064 831d09f0 ea809ee4 ea809e88 9e80: 80803694 807f99c4 00000064 00000001 00000000 ea809ea4 85083210 835b7b28 9ea0: 00006400 0000000b ea809e98 00000000 00000000 7c1217e9 00000000 83e96680 9ec0: 40946400 20000600 20000600 83e96680 00000003 855f6200 ea809ef4 ea809ee8 9ee0: 808037c8 7c1217e9 ea809f14 00000000 83e96681 40946400 20000600 83e96680 9f00: 00000003 855f6200 ea809fa4 ea809f18 805ba740 814875c4 ecac8b10 855f6200 9f20: ea809f3c ea809f30 81b52720 81b525ec ea809f54 ea809f40 8025a79c 8028e478 9f40: ea809fb0 40000000 ea809f84 ea809f58 80220bdc 8025a758 00000000 82a1eb0c 9f60: ea809fb0 0013e9c0 ecac8b10 80220b30 00000000 7c1217e9 ea809fac 00000000 9f80: 00000000 00346310 00000036 8020029c 855f6200 00000036 00000000 ea809fa8 9fa0: 80200060 805ba508 00000000 00000000 00000003 40946400 20000600 00000000 9fc0: 00000000 00000000 00346310 00000036 003462d8 00000000 00000001 76fc30dc 9fe0: 76fc2e88 76fc2e78 00018ebc 00130820 60000010 00000003 00000000 00000000 Call trace: [<8148f0e0>] (parport_attach) from [<8148ade0>] (comedi_device_attach+0x108/0x244 drivers/comedi/drivers.c:1101) r6:00000000 r5:81e2dfe8 r4:82bd8e44 [<8148acd8>] (comedi_device_attach) from [<814865e4>] (do_devconfig_ioctl+0xcc/0x218 drivers/comedi/comedi_fops.c:930) r10:855f6200 r9:00000003 r8:00000003 r7:40946400 r6:b5403587 r5:831d09c0 r4:20000600 [<81486518>] (do_devconfig_ioctl) from [<8148790c>] (comedi_unlocked_ioctl+0x354/0x1db8 drivers/comedi/comedi_fops.c:2302) r8:00000003 r7:40946400 r6:20000600 r5:831d09c0 r4:83e96680 [<814875b8>] (comedi_unlocked_ioctl) from [<805ba740>] (vfs_ioctl fs/ioctl.c:51 [inline]) [<814875b8>] (comedi_unlocked_ioctl) from [<805ba740>] (do_vfs_ioctl fs/ioctl.c:551 [inline]) [<814875b8>] (comedi_unlocked_ioctl) from [<805ba740>] (__do_sys_ioctl fs/ioctl.c:595 [inline]) [<814875b8>] (comedi_unlocked_ioctl) from [<805ba740>] (sys_ioctl+0x244/0xb5c fs/ioctl.c:583) r10:855f6200 r9:00000003 r8:83e96680 r7:20000600 r6:40946400 r5:83e96681 r4:00000000 [<805ba4fc>] (sys_ioctl) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67) Exception stack(0xea809fa8 to 0xea809ff0) 9fa0: 00000000 00000000 00000003 40946400 20000600 00000000 9fc0: 00000000 00000000 00346310 00000036 003462d8 00000000 00000001 76fc30dc 9fe0: 76fc2e88 76fc2e78 00018ebc 00130820 r10:00000036 r9:855f6200 r8:8020029c r7:00000036 r6:00346310 r5:00000000 r4:00000000 Code: e5963064 e3a04000 e7f33053 e2433612 (e5c34000) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: e5963064 ldr r3, [r6, #100] @ 0x64 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