syz.0.0[5324] is installing a program with bpf_probe_write_user helper that may corrupt user memory! syz.0.0[5324] is installing a program with bpf_probe_write_user helper that may corrupt user memory! syz.0.0[5324] is installing a program with bpf_probe_write_user helper that may corrupt user memory! ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5324 at fs/inode.c:336 drop_nlink+0xc4/0x110 fs/inode.c:336 Modules linked in: CPU: 0 UID: 0 PID: 5324 Comm: syz.0.0 Not tainted 6.12.0-rc6-syzkaller-00279-gde2f378f2b77 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:drop_nlink+0xc4/0x110 fs/inode.c:336 Code: bb 70 07 00 00 be 08 00 00 00 e8 e7 11 e6 ff 3e 48 ff 83 70 07 00 00 5b 41 5c 41 5e 41 5f 5d c3 cc cc cc cc e8 2d 49 7c ff 90 <0f> 0b 90 eb 83 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 5c ff ff ff RSP: 0018:ffffc9000d43f7d0 EFLAGS: 00010293 RAX: ffffffff82189133 RBX: 1ffff110087ea46d RCX: ffff888000bf4880 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffff821890b3 R09: 1ffff110087ea4fa R10: dffffc0000000000 R11: ffffed10087ea4fb R12: ffff888043f52368 R13: dffffc0000000000 R14: ffff888043f52320 R15: dffffc0000000000 FS: 00007f22459ea6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2239bffe00 CR3: 0000000035d34000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: f2fs_i_links_write fs/f2fs/f2fs.h:3127 [inline] f2fs_rename fs/f2fs/namei.c:999 [inline] f2fs_rename2+0x1b6c/0x2c30 fs/f2fs/namei.c:1272 vfs_rename+0xbdb/0xf00 fs/namei.c:5013 do_renameat2+0xd94/0x13f0 fs/namei.c:5170 __do_sys_rename fs/namei.c:5217 [inline] __se_sys_rename fs/namei.c:5215 [inline] __x64_sys_rename+0x82/0x90 fs/namei.c:5215 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2244b7e719 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f22459ea038 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 00007f2244d36058 RCX: 00007f2244b7e719 RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000020000000 RBP: 00007f2244bf139e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f2244d36058 R15: 00007fffa3862bb8