8<--- cut here --- Unable to handle kernel NULL pointer dereference at virtual address 00000000 [00000000] *pgd=85499003, *pmd=e0d92003 Internal error: Oops: 207 [#1] PREEMPT SMP ARM Modules linked in: CPU: 1 PID: 27725 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: 60000093 sp : ec4adac8 ip : 82c00024 fp : ec4adb0c r10: 8280e800 r9 : 00000000 r8 : 82449498 r7 : 8220c940 r6 : 00000008 r5 : 84335200 r4 : 8554285c r3 : 00000000 r2 : 00000000 r1 : 00000004 r0 : 8280e800 Flags: nZCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment none Control: 30c5387d Table: 849366c0 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 85542800 pointer offset 92 size 2048 Register r5 information: slab kmalloc-512 start 84335200 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 0xec4ac000 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: 27725, stack limit = 0xec4ac000) Stack: (0xec4adac8 to 0xec4ae000) dac0: 80275518 802a0f18 820a235c 83e69700 0000001a 00000001 dae0: 80000013 8554285c 00000008 84335200 60000013 ec4adb63 8250f9c0 85587974 db00: ec4adb2c ec4adb10 80260b0c 8026037c 8410e3c0 85542800 00000000 00000001 db20: ec4adb5c ec4adb30 816cb278 80260ac8 8167bbd0 ec4adbbc ec4adba8 85542800 db40: 855428d8 000001f4 816cb2f8 00000000 ec4adb74 ec4adb60 816cb32c 816cb1d4 db60: 01275518 49dfc9f2 ec4adb94 ec4adb78 816c9eb8 816cb304 85542800 81ed8f0c db80: 85542818 855428c4 ec4adbbc ec4adb98 816ca530 816c9e90 ec4adbbc 49dfc9f2 dba0: 85586000 81ed8f0c 8558605c 8509d080 ec4adbdc ec4adbc0 816be830 816ca424 dbc0: 85586000 81ed8f0c 8410ea80 8509d080 ec4adbf4 ec4adbe0 816bfe24 816be7c8 dbe0: 84277014 81ed8f0c ec4adc9c ec4adbf8 813b6a80 816bfe00 00000001 824484f8 dc00: ec4adc1c ec4adc10 817582ac 81758198 ec4adc4c ec4adc20 8027ae00 802745b4 dc20: ffedc000 83e69700 00000001 49dfc9f2 816bfdf4 00000000 00000000 00000000 dc40: 81a4d3a0 0000001f 03010002 00000123 000072fc 84277000 84277010 84277014 dc60: 8509d080 8250f9c0 00000000 00000000 ec4adca4 49dfc9f2 8410ea80 813b68b8 dc80: 84277000 0000001c 82210b94 00000000 ec4adcec ec4adca0 813b5b6c 813b68c4 dca0: 82801480 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dcc0: 00000000 00000000 00000000 49dfc9f2 8410ea80 823bfe4c 85587800 8410ea80 dce0: ec4add04 ec4adcf0 813b63dc 813b5ab4 82930000 82930064 ec4add44 ec4add08 dd00: 813b50a8 813b63bc 85587800 0000001c 7fffffff 49dfc9f2 ec4add44 0000001c dd20: ec4adf38 8410ea80 0000001c 85587800 00000000 00000000 ec4adda4 ec4add48 dd40: 813b53f0 813b4e60 00000000 00000000 84277000 00000000 00000000 85634400 dd60: 00000000 000072fc 00000000 00000000 00000000 49dfc9f2 ec4adda4 ec4adf38 dd80: 85a4a000 85a4a000 00000000 00000000 00000000 ec4adddc ec4addbc ec4adda8 dda0: 8128ff6c 813b51e8 ec4adf38 00000000 ec4ade2c ec4addc0 81290d50 8128ff3c ddc0: 80795b6c 807959e8 ec4ade38 ec4adf48 00000000 00000000 ec4ade2c ec4adde8 dde0: 8129295c 80795b4c ec4ade38 ec4adf48 00000000 00000000 20000180 49dfc9f2 de00: 00000000 00000000 ec4adf38 85a4a000 00000000 00000000 83e69700 00000128 de20: ec4adf24 ec4ade30 81292a04 81290b50 00000000 802745b4 00000000 200001c0 de40: 0000001c 49dfc9f2 ec4ade64 ffedc000 83e69700 00000001 ec4ade84 ec4ade68 de60: 80435c40 8027ad54 83e69700 769e1000 00000255 00000040 ec4adf2c ec4ade88 de80: 8043c618 802745b4 ed92475f 00e00000 00000000 00000000 ec4adf14 ed92475f dea0: 0000071f ffedc000 00e00000 ded61910 ec4adef4 ec4adec0 802fab54 810b235c dec0: ec4adefc ec4aded0 804cbfe8 802ce8a8 00000000 ec4adf34 ec4adf30 00000000 dee0: 00000128 80200288 83e69700 00000128 ec4adf0c ec4adf00 804cc05c 49dfc9f2 df00: ec4adf24 85a4a000 20000140 00000000 00000128 80200288 ec4adfa4 ec4adf28 df20: 81292e58 8129299c 00000000 00000000 00000001 fffffff7 00000000 00000000 df40: ec4adf5c ec4adf50 01010000 00000000 00000000 ec4ade44 00000000 00000000 df60: 00000000 00000001 00000000 00000000 00000000 00000000 ec4adf9c ec4adf88 df80: 803ecf68 49dfc9f2 00000000 00000000 00000000 0014c590 00000000 ec4adfa8 dfa0: 80200060 81292e0c 00000000 00000000 00000006 20000140 00000000 00000000 dfc0: 00000000 00000000 0014c590 00000128 7ef323d2 769e26d0 7ef32544 769e220c dfe0: 769e2020 769e2010 000164dc 0004d5a0 60000010 00000006 00000000 00000000 Backtrace: [<80260370>] (__queue_work) from [<80260b0c>] (queue_work_on+0x50/0x5c kernel/workqueue.c:1545) r10:85587974 r9:8250f9c0 r8:ec4adb63 r7:60000013 r6:84335200 r5:00000008 r4:8554285c [<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 r5:85542800 r4:8410e3c0 [<816cb1c8>] (nci_send_cmd) from [<816cb32c>] (nci_reset_req+0x34/0x5c net/nfc/nci/core.c:166) r8:00000000 r7:816cb2f8 r6:000001f4 r5:855428d8 r4:85542800 [<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) r7:855428c4 r6:85542818 r5:81ed8f0c r4:85542800 [<816ca418>] (nci_dev_up) from [<816be830>] (nfc_dev_up+0x74/0x11c net/nfc/core.c:118) r7:8509d080 r6:8558605c r5:81ed8f0c r4:85586000 [<816be7bc>] (nfc_dev_up) from [<816bfe24>] (nfc_genl_dev_up+0x30/0x58 net/nfc/netlink.c:770) r7:8509d080 r6:8410ea80 r5:81ed8f0c r4:85586000 [<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 r4:84277014 [<813b68b8>] (genl_rcv_msg) from [<813b5b6c>] (netlink_rcv_skb+0xc4/0x128 net/netlink/af_netlink.c:2540) r9:00000000 r8:82210b94 r7:0000001c r6:84277000 r5:813b68b8 r4:8410ea80 [<813b5aa8>] (netlink_rcv_skb) from [<813b63dc>] (genl_rcv+0x2c/0x3c net/netlink/genetlink.c:861) r7:8410ea80 r6:85587800 r5:823bfe4c r4:8410ea80 [<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 r8:85587800 r7:0000001c r6:8410ea80 r5:ec4adf38 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:ec4adddc r9:00000000 r8:00000000 r7:00000000 r6:85a4a000 r5:85a4a000 r4:ec4adf38 [<8128ff30>] (sock_sendmsg) from [<81290d50>] (____sys_sendmsg+0x20c/0x2a4 net/socket.c:2482) r5:00000000 r4:ec4adf38 [<81290b44>] (____sys_sendmsg) from [<81292a04>] (___sys_sendmsg+0x74/0xac net/socket.c:2536) r10:00000128 r9:83e69700 r8:00000000 r7:00000000 r6:85a4a000 r5:ec4adf38 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 r4:85a4a000 [<81292e00>] (sys_sendmsg) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:64) Exception stack(0xec4adfa8 to 0xec4adff0) dfa0: 00000000 00000000 00000006 20000140 00000000 00000000 dfc0: 00000000 00000000 0014c590 00000128 7ef323d2 769e26d0 7ef32544 769e220c dfe0: 769e2020 769e2010 000164dc 0004d5a0 r6:0014c590 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