./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1796699501 <...> Warning: Permanently added '10.128.0.180' (ED25519) to the list of known hosts. execve("./syz-executor1796699501", ["./syz-executor1796699501"], 0x7ffce400c460 /* 10 vars */) = 0 brk(NULL) = 0x55556a161000 brk(0x55556a161e00) = 0x55556a161e00 arch_prctl(ARCH_SET_FS, 0x55556a161480) = 0 set_tid_address(0x55556a161750) = 5821 set_robust_list(0x55556a161760, 24) = 0 rseq(0x55556a161da0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1796699501", 4096) = 28 getrandom("\xfc\x24\xd6\x84\x98\x0a\x3c\x19", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556a161e00 brk(0x55556a182e00) = 0x55556a182e00 brk(0x55556a183000) = 0x55556a183000 mprotect(0x7f3549b47000, 16384, PROT_READ) = 0 mmap(0x3ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x3ffffffff000 mmap(0x400000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x400000000000 mmap(0x400001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x400001000000 rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGSEGV, {sa_handler=0x7f3549a98a60, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f3549aa10e0}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f3549a98a60, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f3549aa10e0}, NULL, 8) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5822 attached [pid 5822] set_robust_list(0x55556a161760, 24) = 0 [pid 5822] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5821] <... clone resumed>, child_tidptr=0x55556a161750) = 5822 [pid 5822] setpgid(0, 0) = 0 [pid 5822] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5822] write(3, "1000", 4) = 4 [pid 5822] close(3executing program ) = 0 [pid 5822] write(1, "executing program\n", 18) = 18 [pid 5822] memfd_create("syzkaller", 0) = 3 [pid 5822] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3541600000 [pid 5822] 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 [pid 5822] munmap(0x7f3541600000, 138412032) = 0 [pid 5822] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5822] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5822] close(3) = 0 [pid 5822] close(4) = 0 [pid 5822] mkdir("./file1", 0777) = 0 syzkaller login: [ 63.444178][ T5822] loop0: detected capacity change from 0 to 32768 [pid 5822] mount("/dev/loop0", "./file1", "jfs", MS_DIRSYNC|MS_POSIXACL, "") = 0 [pid 5822] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5822] chdir("./file1") = 0 [pid 5822] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5822] link("./file1", "./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") = 0 [ 63.548169][ T5822] syz-executor179: attempt to access beyond end of device [ 63.548169][ T5822] loop0: rw=1, sector=4680032, nr_sectors = 8 limit=32768 [ 63.562736][ T5822] metapage_write_end_io: I/O error [ 63.568594][ T5822] ERROR: (device loop0): release_metapage: metapage_write_one() failed [ 63.568594][ T5822] [ 63.580239][ T5822] ERROR: (device loop0): remounting filesystem as read-only [ 63.588852][ T116] blkno = 8ed2c, nblocks = 1 [ 63.589187][ T5822] blkno = 8ed2c, nblocks = 1 [pid 5822] mkdir("\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38\x2f", 0777) = -1 EIO (Input/output error) [pid 5822] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [ 63.593446][ T116] ERROR: (device loop0): dbUpdatePMap: blocks are outside the map [ 63.593446][ T116] [ 63.608172][ T5822] ERROR: (device loop0): dbUpdatePMap: blocks are outside the map [ 63.608172][ T5822] [ 63.620512][ T5822] blkno = 8ed2c, nblocks = 1 [ 63.625326][ T5822] ERROR: (device loop0): dbUpdatePMap: blocks are outside the map [ 63.625326][ T5822] [ 63.637334][ T5822] ERROR: (device loop0): dbAlloc: the hint is outside the map [ 63.637334][ T5822] [ 63.659068][ T5822] ------------[ cut here ]------------ [ 63.664605][ T5822] UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:628:10 [ 63.672329][ T5822] index 237 is out of range for type 'struct dtslot[128]' [ 63.679597][ T5822] CPU: 1 UID: 0 PID: 5822 Comm: syz-executor179 Not tainted 6.14.0-rc3-syzkaller-00166-g334426094588 #0 [ 63.679617][ T5822] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 [ 63.679626][ T5822] Call Trace: [ 63.679634][ T5822] [ 63.679639][ T5822] dump_stack_lvl+0x241/0x360 [ 63.679655][ T5822] ? __pfx_dump_stack_lvl+0x10/0x10 [ 63.679665][ T5822] ? __pfx__printk+0x10/0x10 [ 63.679680][ T5822] ? do_read_cache_folio+0x4e7/0x5b0 [ 63.679697][ T5822] ? folio_unlock+0x10e/0x170 [ 63.679710][ T5822] __ubsan_handle_out_of_bounds+0x121/0x150 [ 63.679725][ T5822] dtSearch+0x1bde/0x2520 [ 63.679754][ T5822] jfs_lookup+0x17f/0x410 [ 63.679769][ T5822] ? __pfx_jfs_lookup+0x10/0x10 [ 63.679794][ T5822] ? do_raw_spin_unlock+0x13c/0x8b0 [ 63.679808][ T5822] ? _raw_spin_unlock+0x28/0x50 [ 63.679822][ T5822] ? d_alloc+0x142/0x190 [ 63.679835][ T5822] lookup_one_qstr_excl+0x126/0x2b0 [ 63.679847][ T5822] filename_create+0x297/0x540 [ 63.679864][ T5822] ? __pfx_filename_create+0x10/0x10 [ 63.679876][ T5822] ? __might_fault+0xaa/0x120 [ 63.679893][ T5822] do_mkdirat+0xbd/0x3a0 [ 63.679904][ T5822] ? __check_object_size+0x47a/0x730 [ 63.679921][ T5822] ? __pfx_do_mkdirat+0x10/0x10 [ 63.679931][ T5822] ? strncpy_from_user+0x146/0x270 [ 63.679946][ T5822] ? getname_flags+0x1e3/0x540 [ 63.679957][ T5822] __x64_sys_mkdir+0x6c/0x80 [ 63.679970][ T5822] do_syscall_64+0xf3/0x230 [ 63.679984][ T5822] ? clear_bhb_loop+0x35/0x90 [ 63.679999][ T5822] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 63.680012][ T5822] RIP: 0033:0x7f3549acd117 [ 63.680024][ T5822] 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 [ 63.680032][ T5822] RSP: 002b:00007fff68fe9d78 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 63.680043][ T5822] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3549acd117 [ 63.680049][ T5822] RDX: 0000000000004800 RSI: 00000000000001ff RDI: 0000400000000180 [ 63.680055][ T5822] RBP: 0000400000000180 R08: 0000000000000000 R09: 0000000000000000 [ 63.680061][ T5822] R10: 00007fff68fe9e10 R11: 0000000000000246 R12: 0000000000000000 [ 63.680066][ T5822] R13: 00007fff68fe9e10 R14: 0000000000000000 R15: 0000000000000000 [ 63.680080][ T5822] [ 63.680083][ T5822] ---[ end trace ]--- [ 63.909761][ T5822] Kernel panic - not syncing: UBSAN: panic_on_warn set ... [ 63.916947][ T5822] CPU: 1 UID: 0 PID: 5822 Comm: syz-executor179 Not tainted 6.14.0-rc3-syzkaller-00166-g334426094588 #0 [ 63.928041][ T5822] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 [ 63.938089][ T5822] Call Trace: [ 63.941360][ T5822] [ 63.944278][ T5822] dump_stack_lvl+0x241/0x360 [ 63.948954][ T5822] ? __pfx_dump_stack_lvl+0x10/0x10 [ 63.954237][ T5822] ? __pfx__printk+0x10/0x10 [ 63.958829][ T5822] ? vscnprintf+0x5d/0x90 [ 63.963154][ T5822] panic+0x349/0x880 [ 63.967050][ T5822] ? check_panic_on_warn+0x21/0xb0 [ 63.972160][ T5822] ? __pfx_panic+0x10/0x10 [ 63.976581][ T5822] ? _printk+0xd5/0x120 [ 63.980763][ T5822] ? __pfx__printk+0x10/0x10 [ 63.985374][ T5822] ? do_read_cache_folio+0x4e7/0x5b0 [ 63.990677][ T5822] check_panic_on_warn+0x86/0xb0 [ 63.995713][ T5822] __ubsan_handle_out_of_bounds+0x141/0x150 [ 64.001639][ T5822] dtSearch+0x1bde/0x2520 [ 64.006007][ T5822] jfs_lookup+0x17f/0x410 [ 64.010344][ T5822] ? __pfx_jfs_lookup+0x10/0x10 [ 64.015208][ T5822] ? do_raw_spin_unlock+0x13c/0x8b0 [ 64.020420][ T5822] ? _raw_spin_unlock+0x28/0x50 [ 64.025273][ T5822] ? d_alloc+0x142/0x190 [ 64.029523][ T5822] lookup_one_qstr_excl+0x126/0x2b0 [ 64.034726][ T5822] filename_create+0x297/0x540 [ 64.039492][ T5822] ? __pfx_filename_create+0x10/0x10 [ 64.044775][ T5822] ? __might_fault+0xaa/0x120 [ 64.049453][ T5822] do_mkdirat+0xbd/0x3a0 [ 64.053777][ T5822] ? __check_object_size+0x47a/0x730 [ 64.059064][ T5822] ? __pfx_do_mkdirat+0x10/0x10 [ 64.063917][ T5822] ? strncpy_from_user+0x146/0x270 [ 64.069028][ T5822] ? getname_flags+0x1e3/0x540 [ 64.073796][ T5822] __x64_sys_mkdir+0x6c/0x80 [ 64.078387][ T5822] do_syscall_64+0xf3/0x230 [ 64.082889][ T5822] ? clear_bhb_loop+0x35/0x90 [ 64.087565][ T5822] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 64.093459][ T5822] RIP: 0033:0x7f3549acd117 [ 64.097866][ T5822] 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 [ 64.117466][ T5822] RSP: 002b:00007fff68fe9d78 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 64.125877][ T5822] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3549acd117 [ 64.133851][ T5822] RDX: 0000000000004800 RSI: 00000000000001ff RDI: 0000400000000180 [ 64.141816][ T5822] RBP: 0000400000000180 R08: 0000000000000000 R09: 0000000000000000 [ 64.149797][ T5822] R10: 00007fff68fe9e10 R11: 0000000000000246 R12: 0000000000000000 [ 64.157770][ T5822] R13: 00007fff68fe9e10 R14: 0000000000000000 R15: 0000000000000000 [ 64.165748][ T5822] [ 64.168898][ T5822] Kernel Offset: disabled [ 64.173246][ T5822] Rebooting in 86400 seconds..