./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3862294564 <...> Warning: Permanently added '10.128.0.241' (ED25519) to the list of known hosts. execve("./syz-executor3862294564", ["./syz-executor3862294564"], 0x7ffddbd73670 /* 10 vars */) = 0 brk(NULL) = 0x555562f61000 brk(0x555562f61e00) = 0x555562f61e00 arch_prctl(ARCH_SET_FS, 0x555562f61480) = 0 set_tid_address(0x555562f61750) = 5846 set_robust_list(0x555562f61760, 24) = 0 rseq(0x555562f61da0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3862294564", 4096) = 28 getrandom("\xed\x4e\x1b\xd2\xc2\x41\x0b\xea", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555562f61e00 brk(0x555562f82e00) = 0x555562f82e00 brk(0x555562f83000) = 0x555562f83000 mprotect(0x7f3d3f725000, 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 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=0x7f3d3f675a60, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f3d3f67e060}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f3d3f675a60, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f3d3f67e060}, 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, child_tidptr=0x555562f61750) = 5848 ./strace-static-x86_64: Process 5848 attached [pid 5848] set_robust_list(0x555562f61760, 24) = 0 [pid 5848] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5848] setpgid(0, 0) = 0 [pid 5848] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5848] write(3, "1000", 4) = 4 [pid 5848] close(3) = 0 [pid 5848] write(1, "executing program\n", 18executing program ) = 18 [pid 5848] memfd_create("syzkaller", 0) = 3 [pid 5848] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3d37264000 [pid 5848] 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 5848] munmap(0x7f3d37264000, 138412032) = 0 [pid 5848] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5848] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5848] close(3) = 0 [pid 5848] close(4) = 0 [pid 5848] mkdir("./file1", 0777) = 0 [pid 5848] mount("/dev/loop0", "./file1", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_POSIXACL|MS_LAZYTIME, "") = 0 [pid 5848] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5848] chdir("./file1") = 0 [pid 5848] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 100.434077][ T5848] loop0: detected capacity change from 0 to 32768 [pid 5848] openat(AT_FDCWD, "cpu.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5848] write(4, "\xff\x1c\x5f\xe2\x4a\x08\x7c\x69\x70\xc5\x01\xf7\xd6\x45\x69\x3b\xb1\x25\xc8\x48\x48\xbd\x42\xdc\xaa\x55\x39\x69\xd0\xc7\x48\x4a\xb1\x38\xa9\x06\x4b\x8c\x15\x74\x0a\xbc\x7c\x04\xed\x4a\xb3\x60\x61\x1b\xac\x60\xdc\xbb\x3e\x8d\xd9\xed\xd7\x11\x1a\x69\xfd\x32\x5c\xbb\x12\x72\xb6\x10\xe4\x2d\x5b\x07\x74\xe7\x2d\x2b\xe9\x11\xd3\x6c\xa3\x36\x06\x8d\x92\x4d\xc5\xcf\x3f\x50\x65\x7e\x20\xc2\xc8\x60\xb3\x7d"..., 280) = 280 [pid 5848] mmap(0x200000000000, 12288, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED, 4, 0) = 0x200000000000 [pid 5848] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x200000000100} --- [ 100.549273][ T5848] BUG at fs/jfs/jfs_dmap.c:3036 assert(bitno < 32) [ 100.549609][ T5848] ------------[ cut here ]------------ [ 100.549615][ T5848] kernel BUG at fs/jfs/jfs_dmap.c:3036! [ 100.549646][ T5848] Oops: invalid opcode: 0000 [#1] SMP KASAN PTI [ 100.549672][ T5848] CPU: 1 UID: 0 PID: 5848 Comm: syz-executor386 Tainted: G W 6.17.0-rc1-syzkaller #0 PREEMPT_{RT,(full)} [ 100.549693][ T5848] Tainted: [W]=WARN [ 100.549698][ T5848] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 100.549708][ T5848] RIP: 0010:dbFindBits+0x19e/0x1a0 [ 100.549737][ T5848] Code: f3 fd 90 0f 0b e8 42 1b 8a fe 48 c7 c7 80 75 43 8b 48 c7 c6 c0 72 43 8b ba dc 0b 00 00 48 c7 c1 60 7d 43 8b e8 63 10 f3 fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57 41 [ 100.549750][ T5848] RSP: 0018:ffffc90004c5f4c8 EFLAGS: 00010246 [ 100.549765][ T5848] RAX: 0000000000000030 RBX: 0000000000000002 RCX: e467cdcf3c1b9900 [ 100.549775][ T5848] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 100.549784][ T5848] RBP: 00000000ffffffff R08: 0000000000000000 R09: 0000000000000000 [ 100.549793][ T5848] R10: dffffc0000000000 R11: fffff5200098be3d R12: 0000000000000004 [ 100.549804][ T5848] R13: 0000000000000000 R14: 0000000000000004 R15: 0000000000000020 [ 100.549813][ T5848] FS: 0000555562f61480(0000) GS:ffff8881269c5000(0000) knlGS:0000000000000000 [ 100.549826][ T5848] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 100.549837][ T5848] CR2: 000055d771a42750 CR3: 0000000042cee000 CR4: 00000000003526f0 [ 100.549850][ T5848] Call Trace: [ 100.549855][ T5848] [ 100.549864][ T5848] dbAllocDmapLev+0x16b/0x3c0 [ 100.549884][ T5848] dbAllocCtl+0x14a/0x9c0 [ 100.549903][ T5848] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 100.549926][ T5848] dbAllocAG+0x1e6/0xff0 [ 100.549949][ T5848] dbAlloc+0x5a8/0xba0 [ 100.549968][ T5848] diNewExt+0x9af/0x3150 [ 100.549990][ T5848] ? __pfx_diNewExt+0x10/0x10 [ 100.550004][ T5848] ? __get_metapage+0x865/0xde0 [ 100.550028][ T5848] diAllocAG+0xe86/0x1df0 [ 100.550045][ T5848] ? _raw_spin_unlock_irqrestore+0x85/0x110 [ 100.550064][ T5848] ? lockdep_hardirqs_on+0x9c/0x150 [ 100.550083][ T5848] ? _raw_spin_unlock_irqrestore+0xad/0x110 [ 100.550104][ T5848] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 100.550123][ T5848] ? __pfx_diAllocAG+0x10/0x10 [ 100.550140][ T5848] ? mutex_lock_nested+0x154/0x1d0 [ 100.550162][ T5848] ? diAlloc+0x1b4/0x1670 [ 100.550177][ T5848] diAlloc+0x1d4/0x1670 [ 100.550189][ T5848] ? rt_spin_unlock+0x65/0x80 [ 100.550204][ T5848] ? new_inode+0x150/0x170 [ 100.550230][ T5848] ialloc+0x8c/0x8f0 [ 100.550251][ T5848] jfs_mkdir+0x193/0xa70 [ 100.550278][ T5848] ? __pfx_smack_log+0x10/0x10 [ 100.550302][ T5848] ? smk_access+0x14c/0x4e0 [ 100.550323][ T5848] ? __pfx_jfs_mkdir+0x10/0x10 [ 100.550354][ T5848] ? generic_permission+0x2e5/0x690 [ 100.550382][ T5848] ? bpf_lsm_inode_mkdir+0x9/0x20 [ 100.550398][ T5848] vfs_mkdir+0x306/0x510 [ 100.550417][ T5848] do_mkdirat+0x247/0x590 [ 100.550436][ T5848] ? __pfx_do_mkdirat+0x10/0x10 [ 100.550455][ T5848] ? getname_flags+0x1e5/0x540 [ 100.550486][ T5848] __x64_sys_mkdirat+0x87/0xa0 [ 100.550504][ T5848] do_syscall_64+0xfa/0x3b0 [ 100.550524][ T5848] ? lockdep_hardirqs_on+0x9c/0x150 [ 100.550542][ T5848] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 100.550557][ T5848] ? clear_bhb_loop+0x60/0xb0 [ 100.550574][ T5848] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 100.550589][ T5848] RIP: 0033:0x7f3d3f6ab119 [ 100.550605][ T5848] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 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 [ 100.550618][ T5848] RSP: 002b:00007ffe3189e938 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 [ 100.550633][ T5848] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3d3f6ab119 [ 100.550643][ T5848] RDX: 0000000000000000 RSI: 0000200000000100 RDI: 00000000ffffff9c [ 100.550653][ T5848] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffe3189e970 [ 100.550663][ T5848] R10: 00007ffe3189e940 R11: 0000000000000246 R12: 00007ffe3189e970 [ 100.550673][ T5848] R13: 00007ffe3189ebf8 R14: 431bde82d7b634db R15: 00007f3d3f6f403b [ 100.550690][ T5848] [ 100.550695][ T5848] Modules linked in: [ 100.550709][ T5848] ---[ end trace 0000000000000000 ]--- [ 100.550719][ T5848] RIP: 0010:dbFindBits+0x19e/0x1a0 [ 100.550738][ T5848] Code: f3 fd 90 0f 0b e8 42 1b 8a fe 48 c7 c7 80 75 43 8b 48 c7 c6 c0 72 43 8b ba dc 0b 00 00 48 c7 c1 60 7d 43 8b e8 63 10 f3 fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57 41 [ 100.550751][ T5848] RSP: 0018:ffffc90004c5f4c8 EFLAGS: 00010246 [ 100.550763][ T5848] RAX: 0000000000000030 RBX: 0000000000000002 RCX: e467cdcf3c1b9900 [ 100.550773][ T5848] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 100.550782][ T5848] RBP: 00000000ffffffff R08: 0000000000000000 R09: 0000000000000000 [ 100.550791][ T5848] R10: dffffc0000000000 R11: fffff5200098be3d R12: 0000000000000004 [ 100.550802][ T5848] R13: 0000000000000000 R14: 0000000000000004 R15: 0000000000000020 [ 100.550811][ T5848] FS: 0000555562f61480(0000) GS:ffff8881269c5000(0000) knlGS:0000000000000000 [ 100.550825][ T5848] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 100.550835][ T5848] CR2: 000055d771a42750 CR3: 0000000042cee000 CR4: 00000000003526f0 [ 100.550850][ T5848] Kernel panic - not syncing: Fatal exception [ 100.551193][ T5848] Kernel Offset: disabled