8<--- cut here --- Unable to handle kernel paging request at virtual address df000000 when read [df000000] *pgd=80000080007003, *pmd=00000000 Internal error: Oops: 206 [#1] PREEMPT SMP ARM Modules linked in: CPU: 1 PID: 5616 Comm: syz-executor.0 Not tainted 6.4.0-rc3-syzkaller #0 Hardware name: ARM-Versatile Express PC is at csum_partial+0x40/0x130 arch/arm/lib/csumpartial.S:120 LR is at 0x0 pc : [<817abe48>] lr : [<00000000>] psr: 00000013 sp : eb211b38 ip : a5888900 fp : eb211b94 r10: 813140ec r9 : 813140ec r8 : 00000d02 r7 : fffff2fd r6 : 00000d02 r5 : 00000000 r4 : 00000000 r3 : 00000000 r2 : 7a4c4924 r1 : fffffef0 r0 : df000000 Flags: nzcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none Control: 30c5387d Table: 85df3580 DAC: 00000000 Register r0 information: non-paged memory Register r1 information: non-paged memory Register r2 information: non-paged memory Register r3 information: NULL pointer Register r4 information: NULL pointer Register r5 information: NULL pointer Register r6 information: non-paged memory Register r7 information: non-paged memory Register r8 information: non-paged memory Register r9 information: non-slab/vmalloc memory Register r10 information: non-slab/vmalloc memory Register r11 information: 2-page vmalloc region starting at 0xeb210000 allocated at kernel_clone+0x9c/0x3dc kernel/fork.c:2918 Register r12 information: non-slab/vmalloc memory Process syz-executor.0 (pid: 5616, stack limit = 0xeb210000) Stack: (0xeb211b38 to 0xeb212000) 1b20: 85e37840 84888a10 1b40: 84888a10 8150cdc8 20001000 04200000 85e379c0 85e37840 81fdf3c8 827e2390 1b60: 84de0800 00000505 847dca50 85e379c0 00006869 00000000 00000000 00000000 1b80: 00000000 84889440 eb211bd4 eb211b98 815f6d6c 8150cbf0 00000001 802a6080 1ba0: 00000000 d0cdc43d 8493d240 85e379c0 0000000e 00000000 00006869 00000000 1bc0: 00000000 84889440 eb211c1c eb211bd8 81630720 815f6cb0 80216210 802a5b54 1be0: 00000060 00000052 eb211cb0 d0cdc43d 00000000 85e379c0 00000000 00006869 1c00: 0000dd86 81630c90 eb211cf7 00000011 eb211c3c eb211c20 81630cd4 81630604 1c20: 85e379c0 00000000 00006869 0000dd86 eb211c6c eb211c40 81377e60 81630c9c 1c40: 0000000e d0cdc43d eb211cf7 85e379c0 00006869 00000001 00000000 84b6b800 1c60: eb211c8c eb211c70 813330e0 81377da8 85e379c0 00006869 00000000 eb211cf7 1c80: eb211cc4 eb211c90 8133aaec 8133302c 00000001 00000000 0000007a 00000000 1ca0: 00000000 847ee600 84b6b800 00000000 eb211cf7 00000011 eb211cec eb211cc8 1cc0: 8133ad04 8133a95c 84670800 85e379c0 847ee600 84b6b800 00000000 00000001 1ce0: eb211d24 eb211cf0 813aa538 8133acd0 84670800 00b6b800 00000010 d0cdc43d 1d00: 85e379c0 84670800 00000000 00000001 a3ea32c0 846708c4 eb211d84 eb211d28 1d20: 8133b8e4 813aa384 00000000 00000001 00000011 8260ee34 00211da4 fffffff4 1d40: 00000000 81320ff8 00000000 0000dd86 00000000 d0cdc43d 00000000 85e379c0 1d60: 00002378 84b6b800 0000000a 85e379c0 84de0800 84889580 eb211da4 eb211d88 1d80: 8163441c 8133b388 84de0800 00002378 84b6b800 0000000a eb211e5c eb211da8 1da0: 81637b74 8163438c eb211e08 00000000 817f9954 80277e98 eb211dec eb211dc8 1dc0: eb211ea8 83200b88 00002001 817fa23c 80200288 806b84fc eb211e1c eb211de8 1de0: 81a02a74 00000000 00000002 0000004c 00000060 00000300 00000000 0000000e 1e00: 00000000 0000000a 00000000 004c0500 07440205 0000030c 00000000 00000000 1e20: 00000000 00000000 8216c67c d0cdc43d eb211e5c 00000000 eb211e98 85141180 1e40: 04000002 80200288 8493d240 00000122 eb211e7c eb211e60 8130d5b4 81636cb8 1e60: 00000000 85141180 00000000 04000002 eb211f8c eb211e80 8130f404 8130d57c 1e80: eb211ea8 84938dd0 fffffff7 00000001 84938bc0 00000000 00000000 00000000 1ea0: eb211ed4 eb211eb0 01000006 00000001 00002378 20000080 00000000 00000000 1ec0: 00000001 00000000 00000000 00000000 04000002 00000000 00000000 00000000 1ee0: 00000000 ffffffff 00000000 00000000 00000001 d0cdc43d 00000005 00000000 1f00: 00000080 0014c288 00000000 00000000 8493d240 000000f0 eb211f4c eb211f28 1f20: 80309a10 8030d190 ffffffff 80200288 85141180 8163a064 85141180 00000000 1f40: eb211fa4 eb211f50 80309fd4 8030996c eb211f84 eb211f60 80277db8 802a6080 1f60: 00000000 00000000 8493d240 d0cdc43d 00000000 000002ff 0014c2c4 00000122 1f80: eb211fa4 eb211f90 8130f46c 8130f340 00000000 000002ff 00000000 eb211fa8 1fa0: 80200060 8130f45c 00000000 000002ff 00000003 20000080 00002378 04000002 1fc0: 00000000 000002ff 0014c2c4 00000122 7eb6a3c2 76b396d0 7eb6a534 76b3920c 1fe0: 76b39020 76b39010 00017004 0004dfb0 60000010 00000003 00000000 00000000 Backtrace: [<8150cbe4>] (__udp_gso_segment) from [<815f6d6c>] (udp6_ufo_fragment+0xc8/0x39c net/ipv6/udp_offload.c:47) r10:84889440 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:00006869 r4:85e379c0 [<815f6ca4>] (udp6_ufo_fragment) from [<81630720>] (ipv6_gso_segment.part.0+0x128/0x42c net/ipv6/ip6_offload.c:119) r10:84889440 r9:00000000 r8:00000000 r7:00006869 r6:00000000 r5:0000000e r4:85e379c0 [<816305f8>] (ipv6_gso_segment.part.0) from [<81630cd4>] (ipv6_gso_segment+0x44/0x48 net/ipv6/ip6_offload.c:91) r10:00000011 r9:eb211cf7 r8:81630c90 r7:0000dd86 r6:00006869 r5:00000000 r4:85e379c0 [<81630c90>] (ipv6_gso_segment) from [<81377e60>] (skb_mac_gso_segment+0xc4/0x1a4 net/core/gro.c:141) r7:0000dd86 r6:00006869 r5:00000000 r4:85e379c0 [<81377d9c>] (skb_mac_gso_segment) from [<813330e0>] (__skb_gso_segment+0xc0/0x16c net/core/dev.c:3401) r8:84b6b800 r7:00000000 r6:00000001 r5:00006869 r4:85e379c0 [<81333020>] (__skb_gso_segment) from [<8133aaec>] (skb_gso_segment include/linux/netdevice.h:4859 [inline]) [<81333020>] (__skb_gso_segment) from [<8133aaec>] (validate_xmit_skb+0x19c/0x374 net/core/dev.c:3659) r7:eb211cf7 r6:00000000 r5:00006869 r4:85e379c0 [<8133a950>] (validate_xmit_skb) from [<8133ad04>] (validate_xmit_skb_list+0x40/0x74 net/core/dev.c:3709) r10:00000011 r9:eb211cf7 r8:00000000 r7:84b6b800 r6:847ee600 r5:00000000 r4:00000000 [<8133acc4>] (validate_xmit_skb_list) from [<813aa538>] (sch_direct_xmit+0x1c0/0x45c net/sched/sch_generic.c:327) r9:00000001 r8:00000000 r7:84b6b800 r6:847ee600 r5:85e379c0 r4:84670800 [<813aa378>] (sch_direct_xmit) from [<8133b8e4>] (__dev_xmit_skb net/core/dev.c:3805 [inline]) [<813aa378>] (sch_direct_xmit) from [<8133b8e4>] (__dev_queue_xmit+0x568/0xdc8 net/core/dev.c:4210) r9:846708c4 r8:a3ea32c0 r7:00000001 r6:00000000 r5:84670800 r4:85e379c0 [<8133b37c>] (__dev_queue_xmit) from [<8163441c>] (dev_queue_xmit include/linux/netdevice.h:3085 [inline]) [<8133b37c>] (__dev_queue_xmit) from [<8163441c>] (packet_xmit net/packet/af_packet.c:276 [inline]) [<8133b37c>] (__dev_queue_xmit) from [<8163441c>] (packet_xmit+0x9c/0x100 net/packet/af_packet.c:273) r10:84889580 r9:84de0800 r8:85e379c0 r7:0000000a r6:84b6b800 r5:00002378 r4:85e379c0 [<81634380>] (packet_xmit) from [<81637b74>] (packet_snd net/packet/af_packet.c:3081 [inline]) [<81634380>] (packet_xmit) from [<81637b74>] (packet_sendmsg+0xec8/0x1448 net/packet/af_packet.c:3113) r7:0000000a r6:84b6b800 r5:00002378 r4:84de0800 [<81636cac>] (packet_sendmsg) from [<8130d5b4>] (sock_sendmsg_nosec net/socket.c:724 [inline]) [<81636cac>] (packet_sendmsg) from [<8130d5b4>] (sock_sendmsg+0x44/0x78 net/socket.c:747) r10:00000122 r9:8493d240 r8:80200288 r7:04000002 r6:85141180 r5:eb211e98 r4:00000000 [<8130d570>] (sock_sendmsg) from [<8130f404>] (__sys_sendto+0xd0/0x11c net/socket.c:2144) r7:04000002 r6:00000000 r5:85141180 r4:00000000 [<8130f334>] (__sys_sendto) from [<8130f46c>] (__do_sys_sendto net/socket.c:2156 [inline]) [<8130f334>] (__sys_sendto) from [<8130f46c>] (sys_sendto+0x1c/0x24 net/socket.c:2152) r7:00000122 r6:0014c2c4 r5:000002ff r4:00000000 [<8130f450>] (sys_sendto) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:66) Exception stack(0xeb211fa8 to 0xeb211ff0) 1fa0: 00000000 000002ff 00000003 20000080 00002378 04000002 1fc0: 00000000 000002ff 0014c2c4 00000122 7eb6a3c2 76b396d0 7eb6a534 76b3920c 1fe0: 76b39020 76b39010 00017004 0004dfb0 Code: e0b22003 e0b22004 e0b22005 e0b2200e (e8b04038) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: e0b22003 adcs r2, r2, r3 4: e0b22004 adcs r2, r2, r4 8: e0b22005 adcs r2, r2, r5 c: e0b2200e adcs r2, r2, lr * 10: e8b04038 ldm r0!, {r3, r4, r5, lr} <-- trapping instruction