./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2641483180
<...>
DUID 00:04:76:8b:f6:84:a4:3b:36:39:6c:68:e7:10:38:dd:b7:2c
forked to background, child pid 5487
[ 49.957484][ T5488] 8021q: adding VLAN 0 to HW filter on device bond0
[ 49.987240][ T5488] eql: remember to turn off Van-Jacobson compression on your slave devices
Starting sshd: OK
syzkaller
Warning: Permanently added '10.128.0.46' (ED25519) to the list of known hosts.
execve("./syz-executor2641483180", ["./syz-executor2641483180"], 0x7fff1104c660 /* 10 vars */) = 0
brk(NULL) = 0x55555f43b000
brk(0x55555f43bd00) = 0x55555f43bd00
arch_prctl(ARCH_SET_FS, 0x55555f43b380) = 0
set_tid_address(0x55555f43b650) = 5822
set_robust_list(0x55555f43b660, 24) = 0
rseq(0x55555f43bca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor2641483180", 4096) = 28
getrandom("\x43\xba\x5f\xb2\xf8\xe1\x00\x35", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x55555f43bd00
brk(0x55555f45cd00) = 0x55555f45cd00
brk(0x55555f45d000) = 0x55555f45d000
mprotect(0x7f0929311000, 16384, PROT_READ) = 0
mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000
mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000
mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000
executing program
write(1, "executing program\n", 18) = 18
memfd_create("syzkaller", 0) = 3
mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0920e00000
write(3, "\xce\xfa\xad\x1b\x00\x0e\x00\x00\xff\x7f\x00\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\x73\x79\x7a\x6b\x61\x6c\x73\x79\x7a\x6b\x61\x6c\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
munmap(0x7f0920e00000, 138412032) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
ioctl(4, LOOP_SET_FD, 3) = 0
close(3) = 0
close(4) = 0
mkdir("./file0", 0777) = 0
mount("/dev/loop0", "./file0", "bfs", 0, "\x9f\xce\xf7\x73\x37\x1e\x4e\x03\x5a\x4f\xf1\x90\xbe\xa4\xef\xd6\x86\x42\x04\x6c\x23\xbe\x8a\x9a\xae\x70\xa0\x04\x38\x60\xf9\x89\x31\xe9\xa9\xd2\xa4\xcb\x9b\x6c\xbf\xab\x8d\x88\x54\x2e\xaf\xc9\x85\x11\x79\xa8\xbc\x28\xda\xd0\xfb\xfc\x05\x80\x4b\x2b") = 0
openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
syzkaller login: [ 78.619408][ T5822] loop0: detected capacity change from 0 to 64
chdir("./file0") = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
mknod("./file0", 000) = 0
open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = -1 EINVAL (Invalid argument)
rename("./bus", "./file0") = 0
mkdir(".", 0777) = -1 EEXIST (File exists)
mount(NULL, ".", 0x20000180, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_NOATIME|MS_MOVE|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "\xff\xff\x30\x31\x37\x37\x37\x37\x37\x37\x37\x37\x37\x37\x37\x37\x37\x37\x37\x37\x37\x37\x37\x37\x37\x30\x31\x37\x37\x37\x37\x37\x37\x37\x37\x37\x37\x37\x37\x37\x37\x37\x37\x37\x37\x37\x37\x37\xff\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\xde\xfd\xd6\xf2\x4c\xb9\xac\xb7\xfe\x0b\x0d\xc9\x2a\x09\x31\x35\x91\x2e\xbe\xf4\x26\x73\x1f\xfe\x88\x13\x8f\x2b"...) = 0
openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
mknod("./file0", 000) = -1 EEXIST (File exists)
open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = -1 EINVAL (Invalid argument)
[ 78.724518][ T5822] ------------[ cut here ]------------
[ 78.730440][ T5822] WARNING: CPU: 0 PID: 5822 at fs/inode.c:407 drop_nlink+0xc4/0x110
[ 78.738677][ T5822] Modules linked in:
[ 78.742627][ T5822] CPU: 0 UID: 0 PID: 5822 Comm: syz-executor264 Not tainted 6.13.0-rc5-syzkaller-00161-g63676eefb7a0 #0
[ 78.753841][ T5822] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[ 78.764032][ T5822] RIP: 0010:drop_nlink+0xc4/0x110
[ 78.769172][ T5822] Code: bb 70 07 00 00 be 08 00 00 00 e8 37 3b e7 ff f0 48 ff 83 70 07 00 00 5b 41 5c 41 5e 41 5f 5d c3 cc cc cc cc e8 8d 5b 83 ff 90 <0f> 0b 90 eb 83 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 5c ff ff ff
[ 78.788920][ T5822] RSP: 0018:ffffc90003f3f950 EFLAGS: 00010293
[ 78.795005][ T5822] RAX: ffffffff821c1843 RBX: 1ffff1100ed8b1f8 RCX: ffff8880359e9e00
[ 78.803066][ T5822] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 78.811168][ T5822] RBP: 0000000000000000 R08: ffffffff821c17c3 R09: 1ffffffff2030ad6
[ 78.819251][ T5822] R10: dffffc0000000000 R11: fffffbfff2030ad7 R12: ffff888076c58fc0
[ 78.827365][ T5822] R13: dffffc0000000000 R14: ffff888076c58f78 R15: dffffc0000000000
[ 78.835402][ T5822] FS: 000055555f43b380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
[ 78.844422][ T5822] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 78.851088][ T5822] CR2: 00005560397be730 CR3: 000000007c792000 CR4: 00000000003526f0
[ 78.859126][ T5822] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 78.867198][ T5822] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 78.875191][ T5822] Call Trace:
[ 78.878558][ T5822]
[ 78.881550][ T5822] ? __warn+0x165/0x4d0
[ 78.885727][ T5822] ? drop_nlink+0xc4/0x110
[ 78.890262][ T5822] ? report_bug+0x2b3/0x500
[ 78.894822][ T5822] ? drop_nlink+0xc4/0x110
[ 78.899335][ T5822] ? handle_bug+0x60/0x90
[ 78.903723][ T5822] ? exc_invalid_op+0x1a/0x50
[ 78.908518][ T5822] ? asm_exc_invalid_op+0x1a/0x20
[ 78.913617][ T5822] ? drop_nlink+0x43/0x110
[ 78.918134][ T5822] ? drop_nlink+0xc3/0x110
[ 78.922625][ T5822] ? drop_nlink+0xc4/0x110
[ 78.927149][ T5822] bfs_rename+0x44e/0x530
[ 78.931519][ T5822] ? vfs_rename+0x5ee/0xf00
[ 78.936054][ T5822] ? __pfx_bfs_rename+0x10/0x10
[ 78.940979][ T5822] ? down_write_nested+0x195/0x220
[ 78.946140][ T5822] ? __pfx_down_write_nested+0x10/0x10
[ 78.951747][ T5822] ? do_raw_spin_unlock+0x13c/0x8b0
[ 78.957046][ T5822] ? __asan_memcpy+0x40/0x70
[ 78.961715][ T5822] ? __pfx_bfs_rename+0x10/0x10
[ 78.966696][ T5822] vfs_rename+0xbdb/0xf00
[ 78.971164][ T5822] ? __pfx_vfs_rename+0x10/0x10
[ 78.976036][ T5822] ? bpf_lsm_path_rename+0x9/0x10
[ 78.981154][ T5822] do_renameat2+0xd94/0x13f0
[ 78.985807][ T5822] ? __pfx_do_renameat2+0x10/0x10
[ 78.990947][ T5822] ? __virt_addr_valid+0x183/0x530
[ 78.996115][ T5822] ? __virt_addr_valid+0x45f/0x530
[ 79.001300][ T5822] ? __phys_addr_symbol+0x2f/0x70
[ 79.006367][ T5822] ? strncpy_from_user+0x152/0x270
[ 79.011618][ T5822] ? getname_flags+0x1e3/0x540
[ 79.016421][ T5822] __x64_sys_rename+0x82/0x90
[ 79.021175][ T5822] do_syscall_64+0xf3/0x230
[ 79.025721][ T5822] ? clear_bhb_loop+0x35/0x90
[ 79.030515][ T5822] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 79.036471][ T5822] RIP: 0033:0x7f092929dc79
[ 79.040960][ T5822] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
[ 79.060663][ T5822] RSP: 002b:00007ffdbbfb3f98 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
[ 79.069171][ T5822] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f092929dc79
[ 79.077273][ T5822] RDX: ffffffffffffffb8 RSI: 0000000020000240 RDI: 00000000200001c0
[ 79.085362][ T5822] RBP: 00007f09292e705e R08: 0000000000000000 R09: 0000000000000000
[ 79.093519][ T5822] R10: 0000000000000073 R11: 0000000000000246 R12: 0000000000000001
[ 79.101646][ T5822] R13: 00007ffdbbfb4178 R14: 0000000000000001 R15: 0000000000000001
[ 79.109725][ T5822]
[ 79.112782][ T5822] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 79.120108][ T5822] CPU: 0 UID: 0 PID: 5822 Comm: syz-executor264 Not tainted 6.13.0-rc5-syzkaller-00161-g63676eefb7a0 #0
[ 79.131218][ T5822] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[ 79.141300][ T5822] Call Trace:
[ 79.144600][ T5822]
[ 79.147535][ T5822] dump_stack_lvl+0x241/0x360
[ 79.152232][ T5822] ? __pfx_dump_stack_lvl+0x10/0x10
[ 79.157449][ T5822] ? __pfx__printk+0x10/0x10
[ 79.162051][ T5822] ? vscnprintf+0x5d/0x90
[ 79.166390][ T5822] panic+0x349/0x880
[ 79.170297][ T5822] ? __warn+0x174/0x4d0
[ 79.174459][ T5822] ? __pfx_panic+0x10/0x10
[ 79.178897][ T5822] __warn+0x344/0x4d0
[ 79.182883][ T5822] ? drop_nlink+0xc4/0x110
[ 79.187312][ T5822] report_bug+0x2b3/0x500
[ 79.191648][ T5822] ? drop_nlink+0xc4/0x110
[ 79.196094][ T5822] handle_bug+0x60/0x90
[ 79.200261][ T5822] exc_invalid_op+0x1a/0x50
[ 79.204771][ T5822] asm_exc_invalid_op+0x1a/0x20
[ 79.209634][ T5822] RIP: 0010:drop_nlink+0xc4/0x110
[ 79.214685][ T5822] Code: bb 70 07 00 00 be 08 00 00 00 e8 37 3b e7 ff f0 48 ff 83 70 07 00 00 5b 41 5c 41 5e 41 5f 5d c3 cc cc cc cc e8 8d 5b 83 ff 90 <0f> 0b 90 eb 83 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 5c ff ff ff
[ 79.234303][ T5822] RSP: 0018:ffffc90003f3f950 EFLAGS: 00010293
[ 79.240393][ T5822] RAX: ffffffff821c1843 RBX: 1ffff1100ed8b1f8 RCX: ffff8880359e9e00
[ 79.248388][ T5822] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 79.256392][ T5822] RBP: 0000000000000000 R08: ffffffff821c17c3 R09: 1ffffffff2030ad6
[ 79.264391][ T5822] R10: dffffc0000000000 R11: fffffbfff2030ad7 R12: ffff888076c58fc0
[ 79.272386][ T5822] R13: dffffc0000000000 R14: ffff888076c58f78 R15: dffffc0000000000
[ 79.280406][ T5822] ? drop_nlink+0x43/0x110
[ 79.284865][ T5822] ? drop_nlink+0xc3/0x110
[ 79.289322][ T5822] bfs_rename+0x44e/0x530
[ 79.293677][ T5822] ? vfs_rename+0x5ee/0xf00
[ 79.298206][ T5822] ? __pfx_bfs_rename+0x10/0x10
[ 79.303184][ T5822] ? down_write_nested+0x195/0x220
[ 79.308330][ T5822] ? __pfx_down_write_nested+0x10/0x10
[ 79.313846][ T5822] ? do_raw_spin_unlock+0x13c/0x8b0
[ 79.319067][ T5822] ? __asan_memcpy+0x40/0x70
[ 79.323701][ T5822] ? __pfx_bfs_rename+0x10/0x10
[ 79.328576][ T5822] vfs_rename+0xbdb/0xf00
[ 79.332942][ T5822] ? __pfx_vfs_rename+0x10/0x10
[ 79.337818][ T5822] ? bpf_lsm_path_rename+0x9/0x10
[ 79.342864][ T5822] do_renameat2+0xd94/0x13f0
[ 79.347588][ T5822] ? __pfx_do_renameat2+0x10/0x10
[ 79.352640][ T5822] ? __virt_addr_valid+0x183/0x530
[ 79.357770][ T5822] ? __virt_addr_valid+0x45f/0x530
[ 79.362898][ T5822] ? __phys_addr_symbol+0x2f/0x70
[ 79.367943][ T5822] ? strncpy_from_user+0x152/0x270
[ 79.373107][ T5822] ? getname_flags+0x1e3/0x540
[ 79.377913][ T5822] __x64_sys_rename+0x82/0x90
[ 79.382803][ T5822] do_syscall_64+0xf3/0x230
[ 79.387348][ T5822] ? clear_bhb_loop+0x35/0x90
[ 79.392072][ T5822] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 79.397991][ T5822] RIP: 0033:0x7f092929dc79
[ 79.402461][ T5822] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
[ 79.422093][ T5822] RSP: 002b:00007ffdbbfb3f98 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
[ 79.430533][ T5822] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f092929dc79
[ 79.438552][ T5822] RDX: ffffffffffffffb8 RSI: 0000000020000240 RDI: 00000000200001c0
[ 79.446535][ T5822] RBP: 00007f09292e705e R08: 0000000000000000 R09: 0000000000000000
[ 79.454520][ T5822] R10: 0000000000000073 R11: 0000000000000246 R12: 0000000000000001
[ 79.462502][ T5822] R13: 00007ffdbbfb4178 R14: 0000000000000001 R15: 0000000000000001
[ 79.470502][ T5822]
[ 79.473807][ T5822] Kernel Offset: disabled
[ 79.478195][ T5822] Rebooting in 86400 seconds..