8<--- cut here --- Unable to handle kernel NULL pointer dereference at virtual address 00000000 [00000000] *pgd=85036003, *pmd=df993003 Internal error: Oops: 207 [#1] PREEMPT SMP ARM Modules linked in: CPU: 1 PID: 7649 Comm: syz-executor.1 Not tainted 6.1.0-rc4-syzkaller #0 Hardware name: ARM-Versatile Express PC is at __queue_work+0xa0/0x74c kernel/workqueue.c:1459 LR is at 0x82c00000 pc : [<80260410>] lr : [<82c00000>] psr: 60000193 sp : e047dac8 ip : 82c00024 fp : e047db0c r10: 8280e800 r9 : 00000000 r8 : 82449498 r7 : 8220c940 r6 : 00000008 r5 : 84adda00 r4 : 84a1f05c r3 : 00000000 r2 : 00000000 r1 : 00000004 r0 : 8280e800 Flags: nZCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment none Control: 30c5387d Table: 84fd96c0 DAC: 00000000 Register r0 information: slab kmalloc-512 start 8280e800 pointer offset 0 size 512 Register r1 information: non-paged memory Register r2 information: NULL pointer Register r3 information: NULL pointer Register r4 information: slab kmalloc-2k start 84a1f000 pointer offset 92 size 2048 Register r5 information: slab kmalloc-512 start 84adda00 pointer offset 0 size 512 Register r6 information: non-paged memory Register r7 information: non-slab/vmalloc memory Register r8 information: non-slab/vmalloc memory Register r9 information: NULL pointer Register r10 information: slab kmalloc-512 start 8280e800 pointer offset 0 size 512 Register r11 information: 2-page vmalloc region starting at 0xe047c000 allocated at kernel_clone+0x9c/0x3f4 kernel/fork.c:2671 Register r12 information: slab radix_tree_node start 82c00000 pointer offset 36 Process syz-executor.1 (pid: 7649, stack limit = 0xe047c000) Stack: (0xe047dac8 to 0xe047e000) dac0: 80275518 802a0f18 820a235c 851bae00 0000000c 00000001 dae0: 80000113 84a1f05c 00000008 84adda00 60000113 e047db63 8250f9c0 8533e174 db00: e047db2c e047db10 80260b0c 8026037c 842f6f00 84a1f000 00000000 00000001 db20: e047db5c e047db30 816cb278 80260ac8 8167bbd0 e047dbbc e047dba8 84a1f000 db40: 84a1f0d8 000001f4 816cb2f8 00000000 e047db74 e047db60 816cb32c 816cb1d4 db60: 01275518 6f81ba3c e047db94 e047db78 816c9eb8 816cb304 84a1f000 81ed8f0c db80: 84a1f018 84a1f0c4 e047dbbc e047db98 816ca530 816c9e90 e047dbbc 6f81ba3c dba0: 8533d000 81ed8f0c 8533d05c 8504f280 e047dbdc e047dbc0 816be830 816ca424 dbc0: 8533d000 81ed8f0c 842f6a80 8504f280 e047dbf4 e047dbe0 816bfe24 816be7c8 dbe0: 82acce14 81ed8f0c e047dc9c e047dbf8 813b6a80 816bfe00 00000001 61c88647 dc00: 82acd000 824e7a04 20000013 842f6a80 e047dc34 e047dc20 e047dc34 e047dc28 dc20: e047dc4c e047dc30 8020c314 8020d440 816bfdf4 00000000 00000000 00000000 dc40: 81a4d3a0 0000001f 03010002 00000000 0000092f 82acce00 82acce10 82acce14 dc60: 8504f280 8250f9c0 00000000 00000000 e047dca4 6f81ba3c 842f6a80 813b68b8 dc80: 82acce00 0000001c 82210b94 00000000 e047dcec e047dca0 813b5b6c 813b68c4 dca0: 82801480 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dcc0: 00000000 00000000 00000000 6f81ba3c 842f6a80 823bfe4c 8533e000 842f6a80 dce0: e047dd04 e047dcf0 813b63dc 813b5ab4 82930000 82930064 e047dd44 e047dd08 dd00: 813b50a8 813b63bc 8533e000 0000001c 7fffffff 6f81ba3c e047dd44 0000001c dd20: e047df38 842f6a80 0000001c 8533e000 00000000 00000000 e047dda4 e047dd48 dd40: 813b53f0 813b4e60 00000000 00000000 82acce00 00000000 00000000 8419c480 dd60: 00000000 0000092f 00000000 00000000 00000000 6f81ba3c e047dda4 e047df38 dd80: 84649b80 84649b80 00000000 00000000 00000000 e047dddc e047ddbc e047dda8 dda0: 8128ff6c 813b51e8 e047df38 00000000 e047de2c e047ddc0 81290d50 8128ff3c ddc0: 80795b6c 807959e8 e047de38 e047df48 00000000 00000000 e047de2c e047dde8 dde0: 8129295c 80795b4c e047de38 e047df48 00000000 00000000 20000180 6f81ba3c de00: 00000000 00000000 e047df38 84649b80 00000000 00000000 851bae00 00000128 de20: e047df24 e047de30 81292a04 81290b50 00000000 8175a274 00000000 200001c0 de40: 0000001c 851bae00 e047df24 e047de58 80300518 802fc984 e047de6c 00000000 de60: 817582cc 851bae00 e047de9c 828f9c80 80810f5c 802745b4 82bb3240 82205c00 de80: 00000000 e047dee0 e047ded4 e047de98 802fbfd8 80811368 804a9940 80810ed8 dea0: 00000020 6f81ba3c 00000064 e047deac e047def4 e047dec0 802fab54 810b235c dec0: e047defc e047ded0 804cbfe8 802ce8a8 00000000 e047df34 e047df30 00000000 dee0: 00000128 80200288 851bae00 00000128 e047df0c e047df00 804cc05c 6f81ba3c df00: e047df24 84649b80 20000140 00000000 00000128 80200288 e047dfa4 e047df28 df20: 81292e58 8129299c 00000000 00000000 00000001 fffffff7 00000000 00000000 df40: e047df5c e047df50 01010000 00000000 00000000 e047de44 00000000 00000000 df60: 00000000 00000001 00000000 00000000 00000000 00000000 e047df9c e047df88 df80: 803ecf68 6f81ba3c 00000000 00000000 00000000 0014c080 00000000 e047dfa8 dfa0: 80200060 81292e0c 00000000 00000000 00000008 20000140 00000000 00000000 dfc0: 00000000 00000000 0014c080 00000128 7ef773d2 76b046d0 7ef77544 76b0420c dfe0: 76b04020 76b04010 000164dc 0004d5a0 60000010 00000008 00000000 00000000 Backtrace: [<80260370>] (__queue_work) from [<80260b0c>] (queue_work_on+0x50/0x5c kernel/workqueue.c:1545) r10:8533e174 r9:8250f9c0 r8:e047db63 r7:60000113 r6:84adda00 r5:00000008 r4:84a1f05c [<80260abc>] (queue_work_on) from [<816cb278>] (queue_work include/linux/workqueue.h:503 [inline]) [<80260abc>] (queue_work_on) from [<816cb278>] (nci_send_cmd+0xb0/0x110 net/nfc/nci/core.c:1376) r7:00000001 r6:00000000 r5:84a1f000 r4:842f6f00 [<816cb1c8>] (nci_send_cmd) from [<816cb32c>] (nci_reset_req+0x34/0x5c net/nfc/nci/core.c:166) r8:00000000 r7:816cb2f8 r6:000001f4 r5:84a1f0d8 r4:84a1f000 [<816cb2f8>] (nci_reset_req) from [<816c9eb8>] (__nci_request+0x34/0xd8 net/nfc/nci/core.c:107) [<816c9e84>] (__nci_request) from [<816ca530>] (nci_open_device net/nfc/nci/core.c:502 [inline]) [<816c9e84>] (__nci_request) from [<816ca530>] (nci_dev_up+0x118/0x1f8 net/nfc/nci/core.c:631) r7:84a1f0c4 r6:84a1f018 r5:81ed8f0c r4:84a1f000 [<816ca418>] (nci_dev_up) from [<816be830>] (nfc_dev_up+0x74/0x11c net/nfc/core.c:118) r7:8504f280 r6:8533d05c r5:81ed8f0c r4:8533d000 [<816be7bc>] (nfc_dev_up) from [<816bfe24>] (nfc_genl_dev_up+0x30/0x58 net/nfc/netlink.c:770) r7:8504f280 r6:842f6a80 r5:81ed8f0c r4:8533d000 [<816bfdf4>] (nfc_genl_dev_up) from [<813b6a80>] (genl_family_rcv_msg_doit net/netlink/genetlink.c:756 [inline]) [<816bfdf4>] (nfc_genl_dev_up) from [<813b6a80>] (genl_family_rcv_msg net/netlink/genetlink.c:833 [inline]) [<816bfdf4>] (nfc_genl_dev_up) from [<813b6a80>] (genl_rcv_msg+0x1c8/0x3f4 net/netlink/genetlink.c:850) r5:81ed8f0c r4:82acce14 [<813b68b8>] (genl_rcv_msg) from [<813b5b6c>] (netlink_rcv_skb+0xc4/0x128 net/netlink/af_netlink.c:2540) r9:00000000 r8:82210b94 r7:0000001c r6:82acce00 r5:813b68b8 r4:842f6a80 [<813b5aa8>] (netlink_rcv_skb) from [<813b63dc>] (genl_rcv+0x2c/0x3c net/netlink/genetlink.c:861) r7:842f6a80 r6:8533e000 r5:823bfe4c r4:842f6a80 [<813b63b0>] (genl_rcv) from [<813b50a8>] (netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]) [<813b63b0>] (genl_rcv) from [<813b50a8>] (netlink_unicast+0x254/0x388 net/netlink/af_netlink.c:1345) r5:82930064 r4:82930000 [<813b4e54>] (netlink_unicast) from [<813b53f0>] (netlink_sendmsg+0x214/0x4a8 net/netlink/af_netlink.c:1921) r10:00000000 r9:00000000 r8:8533e000 r7:0000001c r6:842f6a80 r5:e047df38 r4:0000001c [<813b51dc>] (netlink_sendmsg) from [<8128ff6c>] (sock_sendmsg_nosec net/socket.c:714 [inline]) [<813b51dc>] (netlink_sendmsg) from [<8128ff6c>] (sock_sendmsg+0x3c/0x4c net/socket.c:734) r10:e047dddc r9:00000000 r8:00000000 r7:00000000 r6:84649b80 r5:84649b80 r4:e047df38 [<8128ff30>] (sock_sendmsg) from [<81290d50>] (____sys_sendmsg+0x20c/0x2a4 net/socket.c:2482) r5:00000000 r4:e047df38 [<81290b44>] (____sys_sendmsg) from [<81292a04>] (___sys_sendmsg+0x74/0xac net/socket.c:2536) r10:00000128 r9:851bae00 r8:00000000 r7:00000000 r6:84649b80 r5:e047df38 r4:00000000 [<81292990>] (___sys_sendmsg) from [<81292e58>] (__sys_sendmsg net/socket.c:2565 [inline]) [<81292990>] (___sys_sendmsg) from [<81292e58>] (__do_sys_sendmsg net/socket.c:2574 [inline]) [<81292990>] (___sys_sendmsg) from [<81292e58>] (sys_sendmsg+0x58/0xa0 net/socket.c:2572) r8:80200288 r7:00000128 r6:00000000 r5:20000140 r4:84649b80 [<81292e00>] (sys_sendmsg) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:64) Exception stack(0xe047dfa8 to 0xe047dff0) dfa0: 00000000 00000000 00000008 20000140 00000000 00000000 dfc0: 00000000 00000000 0014c080 00000128 7ef773d2 76b046d0 7ef77544 76b0420c dfe0: 76b04020 76b04010 000164dc 0004d5a0 r6:0014c080 r5:00000000 r4:00000000 Code: 0a00003b e59f06a8 eb52dc03 e1a0a000 (e5990000) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 0a00003b beq 0xf4 4: e59f06a8 ldr r0, [pc, #1704] ; 0x6b4 8: eb52dc03 bl 0x14b701c c: e1a0a000 mov sl, r0 * 10: e5990000 ldr r0, [r9] <-- trapping instruction