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kernel BUG at net/socket.c:733!
Internal error: Oops - BUG: 0 [#1] PREEMPT SMP ARM
Modules linked in:
CPU: 0 UID: 0 PID: 11823 Comm: syz.1.2075 Not tainted 6.11.0-rc6-syzkaller #0
Hardware name: ARM-Versatile Express
PC is at sock_sendmsg_nosec net/socket.c:733 [inline]
PC is at sock_sendmsg_nosec net/socket.c:728 [inline]
PC is at __sock_sendmsg+0x74/0x78 net/socket.c:745
LR is at __local_bh_enable_ip+0x50/0xd0 kernel/softirq.c:385
pc : [<8145014c>]    lr : [<8024bb58>]    psr: 60000013
sp : dfc8dd98  ip : dfc8dac0  fp : dfc8ddb4
r10: 00000000  r9 : dfc8ddd4  r8 : dfc8ddd4
r7 : 00000000  r6 : 8489ac80  r5 : dfc8df38  r4 : fffffdef
r3 : fffffdef  r2 : 84223c00  r1 : 00000000  r0 : fffffdef
Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user
Control: 30c5387d  Table: 84cfbf40  DAC: fffffffd
Register r0 information: non-paged memory
Register r1 information: NULL pointer
Register r2 information: slab task_struct start 84223c00 pointer offset 0 size 3072
Register r3 information: non-paged memory
Register r4 information: non-paged memory
Register r5 information: 2-page vmalloc region starting at 0xdfc8c000 allocated at kernel_clone+0xac/0x3e4 kernel/fork.c:2781
Register r6 information: slab sock_inode_cache start 8489ac80 pointer offset 0 size 576
Register r7 information: NULL pointer
Register r8 information: 2-page vmalloc region starting at 0xdfc8c000 allocated at kernel_clone+0xac/0x3e4 kernel/fork.c:2781
Register r9 information: 2-page vmalloc region starting at 0xdfc8c000 allocated at kernel_clone+0xac/0x3e4 kernel/fork.c:2781
Register r10 information: NULL pointer
Register r11 information: 2-page vmalloc region starting at 0xdfc8c000 allocated at kernel_clone+0xac/0x3e4 kernel/fork.c:2781
Register r12 information: 2-page vmalloc region starting at 0xdfc8c000 allocated at kernel_clone+0xac/0x3e4 kernel/fork.c:2781
Process syz.1.2075 (pid: 11823, stack limit = 0xdfc8c000)
Stack: (0xdfc8dd98 to 0xdfc8e000)
dd80:                                                       dfc8df38 8489ac80
dda0: 00000000 00000000 dfc8de24 dfc8ddb8 8145108c 814500e4 dfc8de30 dfc8df48
ddc0: 00000000 00000000 dfc8de24 00000000 81452f28 00000000 00000000 00000000
dde0: 00000000 00000000 00000000 00000000 00000000 ee69dffe 00000000 00000000
de00: dfc8df38 8489ac80 00000000 00000000 20001100 dfc8de34 dfc8df24 dfc8de28
de20: 81452ff8 81450dec 00000000 00000001 00000000 20002440 0000c3ec 00000000
de40: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
de60: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
de80: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
dea0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
dec0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
dee0: 00000000 00000000 00000000 00000000 00000000 ee69dffe 8052e804 00000000
df00: 8489ac80 20001100 00000000 8020029c 84223c00 00000128 dfc8dfa4 dfc8df28
df20: 81453510 81452f68 00000000 00000000 00000001 fffffff7 00000000 00000000
df40: 00000000 00000000 00010000 0000c3ec 20002440 00000000 00000001 00000000
df60: 00000000 00000001 00000000 00000000 00000000 00000000 00000000 00000000
df80: 8020c918 ee69dffe 00000000 00000000 002762f0 00000128 00000000 dfc8dfa8
dfa0: 80200060 814534a4 00000000 00000000 00000003 20001100 00000000 00000000
dfc0: 00000000 00000000 002762f0 00000128 00000000 00006364 003d0f00 76b400bc
dfe0: 76b3fec0 76b3feb0 000189f0 00132dd0 60000010 00000003 00000000 00000000
Call trace: 
[<814500d8>] (__sock_sendmsg) from [<8145108c>] (____sys_sendmsg+0x2ac/0x2cc net/socket.c:2597)
 r7:00000000 r6:00000000 r5:8489ac80 r4:dfc8df38
[<81450de0>] (____sys_sendmsg) from [<81452ff8>] (___sys_sendmsg+0x9c/0xd0 net/socket.c:2651)
 r10:dfc8de34 r9:20001100 r8:00000000 r7:00000000 r6:8489ac80 r5:dfc8df38
 r4:00000000
[<81452f5c>] (___sys_sendmsg) from [<81453510>] (__sys_sendmsg net/socket.c:2680 [inline])
[<81452f5c>] (___sys_sendmsg) from [<81453510>] (__do_sys_sendmsg net/socket.c:2689 [inline])
[<81452f5c>] (___sys_sendmsg) from [<81453510>] (sys_sendmsg+0x78/0xbc net/socket.c:2687)
 r10:00000128 r9:84223c00 r8:8020029c r7:00000000 r6:20001100 r5:8489ac80
 r4:00000000
[<81453498>] (sys_sendmsg) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67)
Exception stack(0xdfc8dfa8 to 0xdfc8dff0)
dfa0:                   00000000 00000000 00000003 20001100 00000000 00000000
dfc0: 00000000 00000000 002762f0 00000128 00000000 00006364 003d0f00 76b400bc
dfe0: 76b3fec0 76b3feb0 000189f0 00132dd0
 r7:00000128 r6:002762f0 r5:00000000 r4:00000000
Code: e1a01004 ebfffdcd e1a00004 e89da8f0 (e7f001f2) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	e1a01004 	mov	r1, r4
   4:	ebfffdcd 	bl	0xfffff740
   8:	e1a00004 	mov	r0, r4
   c:	e89da8f0 	ldm	sp, {r4, r5, r6, r7, fp, sp, pc}
* 10:	e7f001f2 	udf	#18 <-- trapping instruction