./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2708348344
<...>
Warning: Permanently added '10.128.0.68' (ED25519) to the list of known hosts.
execve("./syz-executor2708348344", ["./syz-executor2708348344"], 0x7fff8a68cad0 /* 10 vars */) = 0
brk(NULL) = 0x555591b46000
brk(0x555591b46d00) = 0x555591b46d00
arch_prctl(ARCH_SET_FS, 0x555591b46380) = 0
set_tid_address(0x555591b46650) = 5820
set_robust_list(0x555591b46660, 24) = 0
rseq(0x555591b46ca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor2708348344", 4096) = 28
getrandom("\x70\xb9\xfd\x20\x56\x12\x9f\x85", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x555591b46d00
brk(0x555591b67d00) = 0x555591b67d00
brk(0x555591b68000) = 0x555591b68000
mprotect(0x7f34f2a3d000, 16384, PROT_READ) = 0
mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000
mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000
mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000
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) = 0x7f34ea400000
write(3, "\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\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"..., 16777216) = 16777216
munmap(0x7f34ea400000, 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", "jfs", 0, "iocharset=maccroatian,discard=0x0000000000000003,nodiscard,errors=continue,iocharset=maccyrillic,") = 0
openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
chdir("./file0") = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
chdir("./file0") = 0
[ 86.871918][ T5820] loop0: detected capacity change from 0 to 32768
[ 86.903554][ T5820]
[ 86.903554][ T5820] ... Log Wrap ... Log Wrap ... Log Wrap ...
[ 86.903554][ T5820]
openat(AT_FDCWD, "./file2", O_RDONLY|O_CREAT|O_NOCTTY|O_NONBLOCK|__O_SYNC|O_DIRECT|O_NOFOLLOW|O_NOATIME|FASYNC, 0402) = -1 EIO (Input/output error)
openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME, 000) = -1 EIO (Input/output error)
[ 86.938632][ T5820] read_mapping_page failed!
[ 86.943366][ T5820] ERROR: (device loop0): txCommit:
[ 86.943366][ T5820]
[ 86.955234][ T5820] read_mapping_page failed!
[ 86.960718][ T5820] ERROR: (device loop0): txCommit:
[ 86.960718][ T5820]
[ 86.974017][ T5820] ------------[ cut here ]------------
[ 86.979830][ T5820] UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:3688:8
[ 86.987493][ T5820] index -1 is out of range for type 'struct dtslot[128]'
[ 86.994906][ T5820] CPU: 0 UID: 0 PID: 5820 Comm: syz-executor270 Not tainted 6.15.0-rc4-syzkaller-00042-gb6ea1680d0ac #0 PREEMPT(full)
[ 86.994931][ T5820] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
[ 86.994950][ T5820] Call Trace:
[ 86.994962][ T5820]
[ 86.994973][ T5820] dump_stack_lvl+0x189/0x250
[ 86.995008][ T5820] ? __pfx_dump_stack_lvl+0x10/0x10
[ 86.995034][ T5820] ? __pfx__printk+0x10/0x10
[ 86.995065][ T5820] ? __ubsan_handle_out_of_bounds+0x80/0xf0
[ 86.995095][ T5820] ubsan_epilogue+0xa/0x40
[ 86.995112][ T5820] __ubsan_handle_out_of_bounds+0xe9/0xf0
[ 86.995141][ T5820] dtInsertEntry+0x936/0x1430
[ 86.995194][ T5820] dtSplitPage+0x2a83/0x3b20
[ 86.995283][ T5820] dtInsert+0x109b/0x5f40
[ 86.995320][ T5820] ? txLockAlloc+0x239/0x380
[ 86.995342][ T5820] ? __pfx_txLockAlloc+0x10/0x10
[ 86.995378][ T5820] ? __pfx_dtInsert+0x10/0x10
[ 86.995399][ T5820] ? txLock+0xaf3/0x1cb0
[ 86.995448][ T5820] ? dtInitRoot+0x22a/0x670
[ 86.995476][ T5820] jfs_mkdir+0x6ec/0xa70
[ 86.995513][ T5820] ? __pfx_jfs_mkdir+0x10/0x10
[ 86.995571][ T5820] ? generic_permission+0x2e5/0x690
[ 86.995600][ T5820] ? bpf_lsm_inode_mkdir+0x9/0x20
[ 86.995623][ T5820] vfs_mkdir+0x303/0x510
[ 86.995677][ T5820] do_mkdirat+0x247/0x590
[ 86.995704][ T5820] ? __pfx_do_mkdirat+0x10/0x10
[ 86.995750][ T5820] ? getname_flags+0x1e5/0x540
[ 86.995774][ T5820] __x64_sys_mkdir+0x6c/0x80
[ 86.995800][ T5820] do_syscall_64+0xf6/0x210
[ 86.995831][ T5820] ? clear_bhb_loop+0x45/0xa0
[ 86.995856][ T5820] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 86.995875][ T5820] RIP: 0033:0x7f34f29c37d7
[ 86.995898][ T5820] Code: ff ff 77 07 31 c0 c3 0f 1f 40 00 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
[ 86.995914][ T5820] RSP: 002b:00007ffc4500d838 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
[ 86.995938][ T5820] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f34f29c37d7
[ 86.995952][ T5820] RDX: 0000000000000000 RSI: 00000000000001ff RDI: 0000200000000040
[ 86.995969][ T5820] RBP: 0000200000000040 R08: 0000000000000000 R09: 00002000000000c0
[ 86.995982][ T5820] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000140
[ 86.995994][ T5820] R13: 00007ffc4500d8d0 R14: 0000000000000000 R15: 0000000000000000
[ 86.996026][ T5820]
[ 86.996078][ T5820] ---[ end trace ]---
[ 87.229388][ T5820] Kernel panic - not syncing: UBSAN: panic_on_warn set ...
[ 87.236593][ T5820] CPU: 0 UID: 0 PID: 5820 Comm: syz-executor270 Not tainted 6.15.0-rc4-syzkaller-00042-gb6ea1680d0ac #0 PREEMPT(full)
[ 87.249177][ T5820] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
[ 87.259232][ T5820] Call Trace:
[ 87.262566][ T5820]
[ 87.265503][ T5820] dump_stack_lvl+0x99/0x250
[ 87.270112][ T5820] ? __asan_memcpy+0x40/0x70
[ 87.274714][ T5820] ? __pfx_dump_stack_lvl+0x10/0x10
[ 87.279943][ T5820] ? __pfx__printk+0x10/0x10
[ 87.284733][ T5820] panic+0x2db/0x790
[ 87.288645][ T5820] ? __pfx_panic+0x10/0x10
[ 87.293073][ T5820] ? _printk+0xcf/0x120
[ 87.297236][ T5820] ? __pfx__printk+0x10/0x10
[ 87.301838][ T5820] ? __ubsan_handle_out_of_bounds+0x80/0xf0
[ 87.307738][ T5820] check_panic_on_warn+0x89/0xb0
[ 87.312683][ T5820] __ubsan_handle_out_of_bounds+0xe9/0xf0
[ 87.318409][ T5820] dtInsertEntry+0x936/0x1430
[ 87.323129][ T5820] dtSplitPage+0x2a83/0x3b20
[ 87.327765][ T5820] dtInsert+0x109b/0x5f40
[ 87.332121][ T5820] ? txLockAlloc+0x239/0x380
[ 87.336709][ T5820] ? __pfx_txLockAlloc+0x10/0x10
[ 87.341660][ T5820] ? __pfx_dtInsert+0x10/0x10
[ 87.346424][ T5820] ? txLock+0xaf3/0x1cb0
[ 87.350686][ T5820] ? dtInitRoot+0x22a/0x670
[ 87.355191][ T5820] jfs_mkdir+0x6ec/0xa70
[ 87.359456][ T5820] ? __pfx_jfs_mkdir+0x10/0x10
[ 87.364241][ T5820] ? generic_permission+0x2e5/0x690
[ 87.369445][ T5820] ? bpf_lsm_inode_mkdir+0x9/0x20
[ 87.374467][ T5820] vfs_mkdir+0x303/0x510
[ 87.378717][ T5820] do_mkdirat+0x247/0x590
[ 87.383048][ T5820] ? __pfx_do_mkdirat+0x10/0x10
[ 87.387916][ T5820] ? getname_flags+0x1e5/0x540
[ 87.392695][ T5820] __x64_sys_mkdir+0x6c/0x80
[ 87.397285][ T5820] do_syscall_64+0xf6/0x210
[ 87.401805][ T5820] ? clear_bhb_loop+0x45/0xa0
[ 87.406505][ T5820] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 87.412408][ T5820] RIP: 0033:0x7f34f29c37d7
[ 87.416843][ T5820] Code: ff ff 77 07 31 c0 c3 0f 1f 40 00 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
[ 87.436463][ T5820] RSP: 002b:00007ffc4500d838 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
[ 87.444915][ T5820] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f34f29c37d7
[ 87.453173][ T5820] RDX: 0000000000000000 RSI: 00000000000001ff RDI: 0000200000000040
[ 87.461150][ T5820] RBP: 0000200000000040 R08: 0000000000000000 R09: 00002000000000c0
[ 87.469123][ T5820] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000140
[ 87.477096][ T5820] R13: 00007ffc4500d8d0 R14: 0000000000000000 R15: 0000000000000000
[ 87.485088][ T5820]
[ 87.488343][ T5820] Kernel Offset: disabled
[ 87.492704][ T5820] Rebooting in 86400 seconds..