./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2698448805
<...>
Warning: Permanently added '10.128.0.128' (ED25519) to the list of known hosts.
execve("./syz-executor2698448805", ["./syz-executor2698448805"], 0x7ffe6a70b6c0 /* 10 vars */) = 0
brk(NULL) = 0x55558b99d000
brk(0x55558b99dd00) = 0x55558b99dd00
arch_prctl(ARCH_SET_FS, 0x55558b99d380) = 0
set_tid_address(0x55558b99d650) = 5817
set_robust_list(0x55558b99d660, 24) = 0
rseq(0x55558b99dca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor2698448805", 4096) = 28
getrandom("\x02\xd2\x4f\x32\x13\x57\x8d\x79", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x55558b99dd00
brk(0x55558b9bed00) = 0x55558b9bed00
brk(0x55558b9bf000) = 0x55558b9bf000
mprotect(0x7fe30cafb000, 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) = 0x7fe304600000
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(0x7fe304600000, 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
[ 70.364566][ T5817] loop0: detected capacity change from 0 to 32768
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
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)
[ 70.405786][ T5817]
[ 70.405786][ T5817] ... Log Wrap ... Log Wrap ... Log Wrap ...
[ 70.405786][ T5817]
[ 70.426574][ T5817] read_mapping_page failed!
[ 70.431179][ T5817] ERROR: (device loop0): txCommit:
[ 70.431179][ T5817]
[ 70.441509][ T5817] read_mapping_page failed!
[ 70.446284][ T5817] ERROR: (device loop0): txCommit:
[ 70.446284][ T5817]
[ 70.466854][ T5817] ------------[ cut here ]------------
[ 70.472342][ T5817] UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:3688:8
[ 70.480072][ T5817] index -1 is out of range for type 'struct dtslot[128]'
[ 70.487131][ T5817] CPU: 0 UID: 0 PID: 5817 Comm: syz-executor269 Not tainted 6.15.0-rc4-syzkaller-00042-gb6ea1680d0ac #0 PREEMPT(full)
[ 70.487154][ T5817] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
[ 70.487170][ T5817] Call Trace:
[ 70.487174][ T5817]
[ 70.487181][ T5817] dump_stack_lvl+0x189/0x250
[ 70.487200][ T5817] ? __pfx_dump_stack_lvl+0x10/0x10
[ 70.487213][ T5817] ? __pfx__printk+0x10/0x10
[ 70.487229][ T5817] ? _raw_spin_unlock_irqrestore+0x85/0x110
[ 70.487252][ T5817] ubsan_epilogue+0xa/0x40
[ 70.487261][ T5817] __ubsan_handle_out_of_bounds+0xe9/0xf0
[ 70.487276][ T5817] dtInsertEntry+0x936/0x1430
[ 70.487303][ T5817] dtSplitPage+0x2a83/0x3b20
[ 70.487347][ T5817] dtInsert+0x109b/0x5f40
[ 70.487365][ T5817] ? txLockAlloc+0x239/0x380
[ 70.487375][ T5817] ? __pfx_txLockAlloc+0x10/0x10
[ 70.487393][ T5817] ? __pfx_dtInsert+0x10/0x10
[ 70.487402][ T5817] ? txLock+0xaf3/0x1cb0
[ 70.487430][ T5817] ? dtInitRoot+0x22a/0x670
[ 70.487444][ T5817] jfs_mkdir+0x6ec/0xa70
[ 70.487462][ T5817] ? __pfx_jfs_mkdir+0x10/0x10
[ 70.487490][ T5817] ? generic_permission+0x2e5/0x690
[ 70.487505][ T5817] ? bpf_lsm_inode_mkdir+0x9/0x20
[ 70.487516][ T5817] vfs_mkdir+0x303/0x510
[ 70.487531][ T5817] do_mkdirat+0x247/0x590
[ 70.487544][ T5817] ? __pfx_do_mkdirat+0x10/0x10
[ 70.487557][ T5817] ? getname_flags+0x1e5/0x540
[ 70.487568][ T5817] __x64_sys_mkdir+0x6c/0x80
[ 70.487580][ T5817] do_syscall_64+0xf6/0x210
[ 70.487592][ T5817] ? clear_bhb_loop+0x45/0xa0
[ 70.487604][ T5817] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 70.487612][ T5817] RIP: 0033:0x7fe30ca817d7
[ 70.487625][ T5817] 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
[ 70.487632][ T5817] RSP: 002b:00007ffd25c0f6a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
[ 70.487645][ T5817] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe30ca817d7
[ 70.487651][ T5817] RDX: 0000000000000000 RSI: 00000000000001ff RDI: 0000200000000040
[ 70.487657][ T5817] RBP: 0000200000000040 R08: 0000000000000000 R09: 00002000000000c0
[ 70.487662][ T5817] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000140
[ 70.487668][ T5817] R13: 00007ffd25c0f740 R14: 0000000000000000 R15: 0000000000000000
[ 70.487682][ T5817]
[ 70.487686][ T5817] ---[ end trace ]---
[ 70.719185][ T5817] Kernel panic - not syncing: UBSAN: panic_on_warn set ...
[ 70.726359][ T5817] CPU: 0 UID: 0 PID: 5817 Comm: syz-executor269 Not tainted 6.15.0-rc4-syzkaller-00042-gb6ea1680d0ac #0 PREEMPT(full)
[ 70.738741][ T5817] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
[ 70.748772][ T5817] Call Trace:
[ 70.752049][ T5817]
[ 70.754967][ T5817] dump_stack_lvl+0x99/0x250
[ 70.759540][ T5817] ? __asan_memcpy+0x40/0x70
[ 70.764112][ T5817] ? __pfx_dump_stack_lvl+0x10/0x10
[ 70.769289][ T5817] ? __pfx__printk+0x10/0x10
[ 70.773870][ T5817] panic+0x2db/0x790
[ 70.777752][ T5817] ? __pfx_panic+0x10/0x10
[ 70.782151][ T5817] ? _printk+0xcf/0x120
[ 70.786293][ T5817] ? __pfx__printk+0x10/0x10
[ 70.790866][ T5817] ? _raw_spin_unlock_irqrestore+0x85/0x110
[ 70.796745][ T5817] check_panic_on_warn+0x89/0xb0
[ 70.801678][ T5817] __ubsan_handle_out_of_bounds+0xe9/0xf0
[ 70.807388][ T5817] dtInsertEntry+0x936/0x1430
[ 70.812057][ T5817] dtSplitPage+0x2a83/0x3b20
[ 70.816657][ T5817] dtInsert+0x109b/0x5f40
[ 70.820970][ T5817] ? txLockAlloc+0x239/0x380
[ 70.825539][ T5817] ? __pfx_txLockAlloc+0x10/0x10
[ 70.830461][ T5817] ? __pfx_dtInsert+0x10/0x10
[ 70.835115][ T5817] ? txLock+0xaf3/0x1cb0
[ 70.839344][ T5817] ? dtInitRoot+0x22a/0x670
[ 70.843829][ T5817] jfs_mkdir+0x6ec/0xa70
[ 70.848056][ T5817] ? __pfx_jfs_mkdir+0x10/0x10
[ 70.852811][ T5817] ? generic_permission+0x2e5/0x690
[ 70.857994][ T5817] ? bpf_lsm_inode_mkdir+0x9/0x20
[ 70.862994][ T5817] vfs_mkdir+0x303/0x510
[ 70.867230][ T5817] do_mkdirat+0x247/0x590
[ 70.871538][ T5817] ? __pfx_do_mkdirat+0x10/0x10
[ 70.876373][ T5817] ? getname_flags+0x1e5/0x540
[ 70.881114][ T5817] __x64_sys_mkdir+0x6c/0x80
[ 70.885683][ T5817] do_syscall_64+0xf6/0x210
[ 70.890163][ T5817] ? clear_bhb_loop+0x45/0xa0
[ 70.894818][ T5817] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 70.900684][ T5817] RIP: 0033:0x7fe30ca817d7
[ 70.905079][ T5817] 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
[ 70.924664][ T5817] RSP: 002b:00007ffd25c0f6a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
[ 70.933059][ T5817] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe30ca817d7
[ 70.941006][ T5817] RDX: 0000000000000000 RSI: 00000000000001ff RDI: 0000200000000040
[ 70.948953][ T5817] RBP: 0000200000000040 R08: 0000000000000000 R09: 00002000000000c0
[ 70.956903][ T5817] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000140
[ 70.964859][ T5817] R13: 00007ffd25c0f740 R14: 0000000000000000 R15: 0000000000000000
[ 70.972823][ T5817]
[ 70.976051][ T5817] Kernel Offset: disabled
[ 70.980390][ T5817] Rebooting in 86400 seconds..