8<--- cut here --- Unable to handle kernel NULL pointer dereference at virtual address 00000000 [00000000] *pgd=85332003, *pmd=fe72a003 Internal error: Oops: 207 [#1] PREEMPT SMP ARM Modules linked in: CPU: 0 PID: 16752 Comm: syz-executor.1 Not tainted 6.1.0-rc5-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: 60000093 sp : ed1f5ac8 ip : 82c00024 fp : ed1f5b0c r10: 8280e800 r9 : 00000000 r8 : 82449498 r7 : 8220c940 r6 : 00000008 r5 : 84be1c00 r4 : 852eb85c r3 : 00000000 r2 : 00000000 r1 : 00000004 r0 : 8280e800 Flags: nZCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment user Control: 30c5387d Table: 84e0ed00 DAC: fffffffd 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 852eb800 pointer offset 92 size 2048 Register r5 information: slab kmalloc-512 start 84be1c00 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 0xed1f4000 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: 16752, stack limit = 0xed1f4000) Stack: (0xed1f5ac8 to 0xed1f6000) 5ac0: 80275518 802a0f18 820a235c 82b7b980 00000012 00000000 5ae0: 80000013 852eb85c 00000008 84be1c00 60000013 ed1f5b63 8250f9c0 851e4574 5b00: ed1f5b2c ed1f5b10 80260b0c 8026037c 842f6300 852eb800 00000000 00000001 5b20: ed1f5b5c ed1f5b30 816cb278 80260ac8 8167bbd0 ed1f5bbc ed1f5ba8 852eb800 5b40: 852eb8d8 000001f4 816cb2f8 00000000 ed1f5b74 ed1f5b60 816cb32c 816cb1d4 5b60: 01275518 7101425a ed1f5b94 ed1f5b78 816c9eb8 816cb304 852eb800 81ed8f0c 5b80: 852eb818 852eb8c4 ed1f5bbc ed1f5b98 816ca530 816c9e90 ed1f5bbc 7101425a 5ba0: 851e6800 81ed8f0c 851e685c 85293c80 ed1f5bdc ed1f5bc0 816be830 816ca424 5bc0: 851e6800 81ed8f0c 842f63c0 85293c80 ed1f5bf4 ed1f5be0 816bfe24 816be7c8 5be0: 84be0814 81ed8f0c ed1f5c9c ed1f5bf8 813b6a80 816bfe00 00000001 824484f8 5c00: ed1f5c1c ed1f5c10 817582ac 81758198 ed1f5c4c ed1f5c20 8027ae00 802745b4 5c20: ffefd000 82b7b980 00000001 7101425a 816bfdf4 00000000 00000000 00000000 5c40: 81a4d3a0 0000001f 03010002 00000000 0000140a 84be0800 84be0810 84be0814 5c60: 85293c80 8250f9c0 00000000 00000000 ed1f5ca4 7101425a 842f63c0 813b68b8 5c80: 84be0800 0000001c 82210b94 00000000 ed1f5cec ed1f5ca0 813b5b6c 813b68c4 5ca0: 82801480 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5cc0: 00000000 00000000 00000000 7101425a 842f63c0 823bfe4c 851e4400 842f63c0 5ce0: ed1f5d04 ed1f5cf0 813b63dc 813b5ab4 82930000 82930064 ed1f5d44 ed1f5d08 5d00: 813b50a8 813b63bc 851e4400 0000001c 7fffffff 7101425a ed1f5d44 0000001c 5d20: ed1f5f38 842f63c0 0000001c 851e4400 00000000 00000000 ed1f5da4 ed1f5d48 5d40: 813b53f0 813b4e60 00000000 00000000 84be0800 00000000 00000000 852af000 5d60: 00000000 0000140a 00000000 00000000 00000000 7101425a ed1f5da4 ed1f5f38 5d80: 846af180 846af180 00000000 00000000 00000000 ed1f5ddc ed1f5dbc ed1f5da8 5da0: 8128ff6c 813b51e8 ed1f5f38 00000000 ed1f5e2c ed1f5dc0 81290d50 8128ff3c 5dc0: 80795b6c 807959e8 ed1f5e38 ed1f5f48 00000000 00000000 ed1f5e2c ed1f5de8 5de0: 8129295c 80795b4c ed1f5e38 ed1f5f48 00000000 00000000 20000180 7101425a 5e00: 00000000 00000000 ed1f5f38 846af180 00000000 00000000 82b7b980 00000128 5e20: ed1f5f24 ed1f5e30 81292a04 81290b50 00000000 802745b4 00000000 200001c0 5e40: 0000001c 7101425a ed1f5e64 ffefd000 82b7b980 00000001 ed1f5e84 ed1f5e68 5e60: 80435c40 8027ad54 82b7b980 76aa6000 00000255 00000040 ed1f5f2c ed1f5e88 5e80: 8043c618 802745b4 ee99875f 00e00000 00000000 00000000 ed1f5f14 ee99875f 5ea0: 0000071f ffefd000 00e00000 ded86960 ed1f5ef4 ed1f5ec0 802fab54 810b235c 5ec0: ed1f5efc ed1f5ed0 804cbfe8 802ce8a8 00000000 ed1f5f34 ed1f5f30 00000000 5ee0: 00000128 80200288 82b7b980 00000128 ed1f5f0c ed1f5f00 804cc05c 7101425a 5f00: ed1f5f24 846af180 20000140 00000000 00000128 80200288 ed1f5fa4 ed1f5f28 5f20: 81292e58 8129299c 00000000 00000000 00000001 fffffff7 00000000 00000000 5f40: ed1f5f5c ed1f5f50 01010000 00000000 00000000 ed1f5e44 00000000 00000000 5f60: 00000000 00000001 00000000 00000000 00000000 00000000 ed1f5f9c ed1f5f88 5f80: 803ecf68 7101425a 00000000 00000000 00000000 0014c2c0 00000000 ed1f5fa8 5fa0: 80200060 81292e0c 00000000 00000000 00000007 20000140 00000000 00000000 5fc0: 00000000 00000000 0014c2c0 00000128 7ea8c3d2 76aa76d0 7ea8c544 76aa720c 5fe0: 76aa7020 76aa7010 000164dc 0004d5a0 60000010 00000007 00000000 00000000 Backtrace: [<80260370>] (__queue_work) from [<80260b0c>] (queue_work_on+0x50/0x5c kernel/workqueue.c:1545) r10:851e4574 r9:8250f9c0 r8:ed1f5b63 r7:60000013 r6:84be1c00 r5:00000008 r4:852eb85c [<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 r5:852eb800 r4:842f6300 [<816cb1c8>] (nci_send_cmd) from [<816cb32c>] (nci_reset_req+0x34/0x5c net/nfc/nci/core.c:166) r8:00000000 r7:816cb2f8 r6:000001f4 r5:852eb8d8 r4:852eb800 [<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) r7:852eb8c4 r6:852eb818 r5:81ed8f0c r4:852eb800 [<816ca418>] (nci_dev_up) from [<816be830>] (nfc_dev_up+0x74/0x11c net/nfc/core.c:118) r7:85293c80 r6:851e685c r5:81ed8f0c r4:851e6800 [<816be7bc>] (nfc_dev_up) from [<816bfe24>] (nfc_genl_dev_up+0x30/0x58 net/nfc/netlink.c:770) r7:85293c80 r6:842f63c0 r5:81ed8f0c r4:851e6800 [<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 r4:84be0814 [<813b68b8>] (genl_rcv_msg) from [<813b5b6c>] (netlink_rcv_skb+0xc4/0x128 net/netlink/af_netlink.c:2540) r9:00000000 r8:82210b94 r7:0000001c r6:84be0800 r5:813b68b8 r4:842f63c0 [<813b5aa8>] (netlink_rcv_skb) from [<813b63dc>] (genl_rcv+0x2c/0x3c net/netlink/genetlink.c:861) r7:842f63c0 r6:851e4400 r5:823bfe4c r4:842f63c0 [<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 r8:851e4400 r7:0000001c r6:842f63c0 r5:ed1f5f38 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:ed1f5ddc r9:00000000 r8:00000000 r7:00000000 r6:846af180 r5:846af180 r4:ed1f5f38 [<8128ff30>] (sock_sendmsg) from [<81290d50>] (____sys_sendmsg+0x20c/0x2a4 net/socket.c:2482) r5:00000000 r4:ed1f5f38 [<81290b44>] (____sys_sendmsg) from [<81292a04>] (___sys_sendmsg+0x74/0xac net/socket.c:2536) r10:00000128 r9:82b7b980 r8:00000000 r7:00000000 r6:846af180 r5:ed1f5f38 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 r4:846af180 [<81292e00>] (sys_sendmsg) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:64) Exception stack(0xed1f5fa8 to 0xed1f5ff0) 5fa0: 00000000 00000000 00000007 20000140 00000000 00000000 5fc0: 00000000 00000000 0014c2c0 00000128 7ea8c3d2 76aa76d0 7ea8c544 76aa720c 5fe0: 76aa7020 76aa7010 000164dc 0004d5a0 r6:0014c2c0 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