8<--- cut here --- Unable to handle kernel paging request at virtual address 6f6d657a when read [6f6d657a] *pgd=85195003, *pmd=00000000 Internal error: Oops: 206 [#1] PREEMPT SMP ARM Modules linked in: CPU: 0 PID: 5523 Comm: syz-executor.0 Not tainted 6.2.0-rc6-syzkaller #0 Hardware name: ARM-Versatile Express PC is at nfc_llcp_find_local+0x24/0x6c net/nfc/llcp_core.c:287 LR is at nfc_llcp_unregister_device+0x10/0xbc net/nfc/llcp_core.c:1611 pc : [<81729e9c>] lr : [<8172bf94>] psr: 90000013 sp : dfef9e40 ip : dfef9e50 fp : dfef9e4c r10: 5ac3c35a r9 : 7efffd08 r8 : 84d8db50 r7 : 84a3c800 r6 : 84a3c824 r5 : 84ac245c r4 : 84ac2400 r3 : 83f10400 r2 : 825d0db8 r1 : 84ac2400 r0 : 6f6d6572 Flags: NzcV IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: 30c5387d Table: 852037c0 DAC: fffffffd Register r0 information: non-paged memory Register r1 information: slab kmalloc-1k start 84ac2400 pointer offset 0 size 1024 Register r2 information: non-slab/vmalloc memory Register r3 information: slab kmalloc-1k start 83f10400 pointer offset 0 size 1024 Register r4 information: slab kmalloc-1k start 84ac2400 pointer offset 0 size 1024 Register r5 information: slab kmalloc-1k start 84ac2400 pointer offset 92 size 1024 Register r6 information: slab kmalloc-2k start 84a3c800 pointer offset 36 size 2048 Register r7 information: slab kmalloc-2k start 84a3c800 pointer offset 0 size 2048 Register r8 information: slab cred_jar start 84d8db40 pointer offset 16 size 176 Register r9 information: 2-page vmalloc region starting at 0x7f000000 allocated at bpf_jit_alloc_exec+0x10/0x14 kernel/bpf/core.c:998 Register r10 information: non-paged memory Register r11 information: 2-page vmalloc region starting at 0xdfef8000 allocated at kernel_clone+0x9c/0x400 kernel/fork.c:2681 Register r12 information: 2-page vmalloc region starting at 0xdfef8000 allocated at kernel_clone+0x9c/0x400 kernel/fork.c:2681 Process syz-executor.0 (pid: 5523, stack limit = 0xdfef8000) Stack: (0xdfef9e40 to 0xdfefa000) 9e40: dfef9e64 dfef9e50 8172bf94 81729e84 84ac2400 84ac245c dfef9e7c dfef9e68 9e60: 81723864 8172bf90 84a3c824 84a3c824 dfef9ea4 dfef9e80 817302fc 817237e4 9e80: 852038c0 000e001b 8352d330 8332ae50 84d8db50 7efffd08 dfef9ebc dfef9ea8 9ea0: 80a42dfc 81730274 82a413c0 000e001b dfef9ef4 dfef9ec0 804b3118 80a42df0 9ec0: 80275a80 802a1750 00000000 83294500 00000000 83294d04 83294500 826485e4 9ee0: 83294d34 7efffd08 dfef9f04 dfef9ef8 804b3374 804b30a0 dfef9f2c dfef9f08 9f00: 80266680 804b3370 83294500 dfef9fb0 80200288 fffffe30 80200288 7efffd08 9f20: dfef9fac dfef9f30 8020c078 80266600 00000000 00000000 7efffd08 8240c44c 9f40: 00000000 83f88a00 83f88a40 0000003f dfef9f84 dfef9f60 804d6360 804d619c 9f60: 00000006 00000000 0014c3d4 0000003f 80200288 83294500 dfef9fa4 7c289253 9f80: 804d7124 00000000 00000000 0014c3d4 0000003f 80200288 83294500 0000003f 9fa0: 00000000 dfef9fb0 80200088 8020bc60 00000003 00000003 00000000 00000000 9fc0: 00000000 00000000 0014c3d4 0000003f 7ec0e3d2 76bb36d0 7ec0e544 76bb320c 9fe0: 76bb3020 76bb3010 00016f9c 0004df50 60000010 00000006 00000000 00000000 Backtrace: [<81729e78>] (nfc_llcp_find_local) from [<8172bf94>] (nfc_llcp_unregister_device+0x10/0xbc net/nfc/llcp_core.c:1611) [<8172bf84>] (nfc_llcp_unregister_device) from [<81723864>] (nfc_unregister_device+0x8c/0x118 net/nfc/core.c:1179) r5:84ac245c r4:84ac2400 [<817237d8>] (nfc_unregister_device) from [<817302fc>] (nci_unregister_device+0x94/0x98 net/nfc/nci/core.c:1303) r5:84a3c824 r4:84a3c824 [<81730268>] (nci_unregister_device) from [<80a42dfc>] (virtual_ncidev_close+0x18/0x30 drivers/nfc/virtual_ncidev.c:163) r9:7efffd08 r8:84d8db50 r7:8332ae50 r6:8352d330 r5:000e001b r4:852038c0 [<80a42de4>] (virtual_ncidev_close) from [<804b3118>] (__fput+0x84/0x264 fs/file_table.c:320) r5:000e001b r4:82a413c0 [<804b3094>] (__fput) from [<804b3374>] (____fput+0x10/0x14 fs/file_table.c:348) r9:7efffd08 r8:83294d34 r7:826485e4 r6:83294500 r5:83294d04 r4:00000000 [<804b3364>] (____fput) from [<80266680>] (task_work_run+0x8c/0xb4 kernel/task_work.c:179) [<802665f4>] (task_work_run) from [<8020c078>] (resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]) [<802665f4>] (task_work_run) from [<8020c078>] (do_work_pending+0x424/0x528 arch/arm/kernel/signal.c:630) r9:7efffd08 r8:80200288 r7:fffffe30 r6:80200288 r5:dfef9fb0 r4:83294500 [<8020bc54>] (do_work_pending) from [<80200088>] (slow_work_pending+0xc/0x20) Exception stack(0xdfef9fb0 to 0xdfef9ff8) 9fa0: 00000003 00000003 00000000 00000000 9fc0: 00000000 00000000 0014c3d4 0000003f 7ec0e3d2 76bb36d0 7ec0e544 76bb320c 9fe0: 76bb3020 76bb3010 00016f9c 0004df50 60000010 00000006 r10:0000003f r9:83294500 r8:80200288 r7:0000003f r6:0014c3d4 r5:00000000 r4:00000000 Code: e1a01000 e5b20004 e1500002 0a000005 (e5903008) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: e1a01000 mov r1, r0 4: e5b20004 ldr r0, [r2, #4]! 8: e1500002 cmp r0, r2 c: 0a000005 beq 0x28 * 10: e5903008 ldr r3, [r0, #8] <-- trapping instruction