syzbot has found a reproducer for the following issue on: HEAD commit: f4bc5bbb5fef Merge tag 'nfsd-5.17-2' of git://git.kernel.o.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=12073c74700000 kernel config: https://syzkaller.appspot.com/x/.config?x=5707221760c00a20 dashboard link: https://syzkaller.appspot.com/bug?extid=11421fbbff99b989670e compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12e514a4700000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15fcdf8a700000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+11421fbbff99b989670e@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ WARNING: CPU: 1 PID: 3590 at mm/util.c:590 kvmalloc_node+0xf5/0x100 mm/util.c:590 Modules linked in: CPU: 0 PID: 3590 Comm: syz-executor153 Not tainted 5.17.0-rc3-syzkaller-00043-gf4bc5bbb5fef #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kvmalloc_node+0xf5/0x100 mm/util.c:590 Code: 01 00 00 00 48 89 ef e8 c9 0d 0d 00 49 89 c5 e9 62 ff ff ff e8 ec d3 d0 ff 45 89 e5 41 81 cd 00 20 01 00 eb 8e e8 db d3 d0 ff <0f> 0b e9 45 ff ff ff 0f 1f 40 00 55 48 89 fd 53 e8 c6 d3 d0 ff 48 RSP: 0018:ffffc90002957c48 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: ffff88807297e2c0 RSI: ffffffff81a6da65 RDI: 0000000000000003 RBP: 00000007ff810000 R08: 000000007fffffff R09: 0000000000000001 R10: ffffffff81a6da21 R11: 0000000000000000 R12: 0000000000002dc0 R13: 0000000000000000 R14: 00000000ffffffff R15: 0000000000000700 FS: 000055555577a300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f31855463b0 CR3: 000000001d0ed000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> kvmalloc include/linux/slab.h:732 [inline] kvmalloc_array include/linux/slab.h:750 [inline] kvcalloc include/linux/slab.h:755 [inline] xdp_umem_pin_pages net/xdp/xdp_umem.c:102 [inline] xdp_umem_reg net/xdp/xdp_umem.c:219 [inline] xdp_umem_create+0x563/0x1180 net/xdp/xdp_umem.c:252 xsk_setsockopt+0x73e/0x9e0 net/xdp/xsk.c:1051 __sys_setsockopt+0x2db/0x610 net/socket.c:2180 __do_sys_setsockopt net/socket.c:2191 [inline] __se_sys_setsockopt net/socket.c:2188 [inline] __x64_sys_setsockopt+0xba/0x150 net/socket.c:2188 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f3185535009 Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff78e9c498 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3185535009 RDX: 0000000000000004 RSI: 000000000000011b RDI: 0000000000000003 RBP: 00007f31854f8ff0 R08: 0000000000000020 R09: 0000000000000000 R10: 0000000020000080 R11: 0000000000000246 R12: 00007f31854f9080 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 </TASK>
