./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2032741465 <...> Warning: Permanently added '10.128.0.252' (ED25519) to the list of known hosts. execve("./syz-executor2032741465", ["./syz-executor2032741465"], 0x7ffdd1f26cf0 /* 10 vars */) = 0 brk(NULL) = 0x555593cd0000 brk(0x555593cd0d00) = 0x555593cd0d00 arch_prctl(ARCH_SET_FS, 0x555593cd0380) = 0 set_tid_address(0x555593cd0650) = 5822 set_robust_list(0x555593cd0660, 24) = 0 rseq(0x555593cd0ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2032741465", 4096) = 28 getrandom("\x27\xec\x45\xfb\x86\xf1\x8f\xa3", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555593cd0d00 brk(0x555593cf1d00) = 0x555593cf1d00 brk(0x555593cf2000) = 0x555593cf2000 mprotect(0x7fce1ba87000, 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 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 5823 attached [pid 5823] set_robust_list(0x555593cd0660, 24) = 0 [pid 5823] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5822] <... clone resumed>, child_tidptr=0x555593cd0650) = 5823 [pid 5823] <... prctl resumed>) = 0 [pid 5823] setpgid(0, 0) = 0 [pid 5823] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5823] write(3, "1000", 4) = 4 [pid 5823] close(3) = 0 [pid 5823] write(1, "executing program\n", 18executing program ) = 18 [pid 5823] memfd_create("syzkaller", 0) = 3 [pid 5823] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fce13400000 [pid 5823] 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 5823] munmap(0x7fce13400000, 138412032) = 0 [pid 5823] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5823] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5823] close(3) = 0 [pid 5823] close(4) = 0 [pid 5823] mkdir("./file2", 0777) = 0 [pid 5823] mount("/dev/loop0", "./file2", "jfs", MS_REC|MS_STRICTATIME, "") = 0 [pid 5823] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [ 91.419174][ T5823] loop0: detected capacity change from 0 to 32768 [pid 5823] chdir("./file2") = 0 [pid 5823] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5823] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_DIRECT|O_NOATIME|O_CLOEXEC, 0777) = 4 [ 91.495950][ T30] audit: type=1800 audit(1748612674.784:2): pid=5823 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="syz-executor203" name="file1" dev="loop0" ino=4 res=0 errno=0 [ 91.517571][ T5823] BUG at fs/jfs/inode.c:370 assert(length >= 0) [ 91.524280][ T5823] ------------[ cut here ]------------ [ 91.529756][ T5823] kernel BUG at fs/jfs/inode.c:370! [ 91.535084][ T5823] Oops: invalid opcode: 0000 [#1] SMP KASAN PTI [ 91.541342][ T5823] CPU: 1 UID: 0 PID: 5823 Comm: syz-executor203 Not tainted 6.15.0-syzkaller-08486-gf66bc387efbe #0 PREEMPT(full) [ 91.553405][ T5823] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 91.563461][ T5823] RIP: 0010:jfs_truncate_nolock+0x33b/0x340 [ 91.569392][ T5823] Code: e8 aa a9 25 08 e8 25 01 89 fe 48 c7 c7 80 6f c3 8b 48 c7 c6 a0 6b c3 8b ba 72 01 00 00 48 c7 c1 c0 6f c3 8b e8 76 4f f0 fd 90 <0f> 0b 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 [ 91.588992][ T5823] RSP: 0018:ffffc900043af860 EFLAGS: 00010246 [ 91.595061][ T5823] RAX: 000000000000002d RBX: ffff8880770d1fd8 RCX: 6cc80c570e63f800 [ 91.603027][ T5823] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 91.610998][ T5823] RBP: ffffc900043af910 R08: ffffc900043af547 R09: 1ffff92000875ea8 [ 91.619145][ T5823] R10: dffffc0000000000 R11: fffff52000875ea9 R12: fffffa000000000a [ 91.627209][ T5823] R13: dffffc0000000000 R14: ffff8880770d1fd8 R15: 1ffff92000875f10 [ 91.635181][ T5823] FS: 0000555593cd0380(0000) GS:ffff888125d98000(0000) knlGS:0000000000000000 [ 91.644109][ T5823] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 91.650695][ T5823] CR2: 00007fd7dd58a000 CR3: 00000000338e4000 CR4: 00000000003526f0 [ 91.658671][ T5823] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 91.666669][ T5823] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 91.674637][ T5823] Call Trace: [ 91.677909][ T5823] [ 91.680839][ T5823] ? down_write_nested+0x169/0x200 [ 91.685953][ T5823] ? __pfx_jfs_truncate_nolock+0x10/0x10 [ 91.691600][ T5823] ? __pfx_jfs_get_block+0x10/0x10 [ 91.696710][ T5823] jfs_write_failed+0x119/0x190 [ 91.701564][ T5823] jfs_direct_IO+0x1f4/0x220 [ 91.706156][ T5823] generic_file_direct_write+0x1d8/0x3e0 [ 91.711791][ T5823] ? file_update_time+0x416/0x490 [ 91.716831][ T5823] __generic_file_write_iter+0x11d/0x230 [ 91.722577][ T5823] ? generic_file_write_iter+0xfb/0x540 [ 91.728127][ T5823] generic_file_write_iter+0x10f/0x540 [ 91.733601][ T5823] ? lockdep_hardirqs_on+0x9c/0x150 [ 91.738816][ T5823] ? __pfx_generic_file_write_iter+0x10/0x10 [ 91.744792][ T5823] ? rcu_is_watching+0x15/0xb0 [ 91.749554][ T5823] ? trace_sched_exit_tp+0x38/0x120 [ 91.754755][ T5823] ? __lock_acquire+0xab9/0xd20 [ 91.759617][ T5823] ? rcu_read_lock_any_held+0xb3/0x120 [ 91.765083][ T5823] ? __pfx_rcu_read_lock_any_held+0x10/0x10 [ 91.770980][ T5823] vfs_write+0x548/0xa90 [ 91.775229][ T5823] ? __pfx_generic_file_write_iter+0x10/0x10 [ 91.781210][ T5823] ? __pfx_vfs_write+0x10/0x10 [ 91.785977][ T5823] ? _raw_spin_unlock_irq+0x23/0x50 [ 91.791202][ T5823] ? _raw_spin_unlock_irq+0x2e/0x50 [ 91.796414][ T5823] ksys_write+0x145/0x250 [ 91.800752][ T5823] ? __pfx_ksys_write+0x10/0x10 [ 91.805610][ T5823] do_syscall_64+0xfa/0x3b0 [ 91.810114][ T5823] ? lockdep_hardirqs_on+0x9c/0x150 [ 91.815308][ T5823] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 91.821366][ T5823] ? clear_bhb_loop+0x60/0xb0 [ 91.826047][ T5823] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 91.831943][ T5823] RIP: 0033:0x7fce1ba0eb99 [ 91.836377][ T5823] 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 [ 91.855985][ T5823] RSP: 002b:00007ffd0e6719b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 91.864414][ T5823] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fce1ba0eb99 [ 91.872382][ T5823] RDX: 00000000000000a0 RSI: 0000200000000340 RDI: 0000000000000004 [ 91.880357][ T5823] RBP: 00007fce1ba875f0 R08: 0000000000000000 R09: 0000555593cd14c0 [ 91.888333][ T5823] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd0e6719e0 [ 91.896302][ T5823] R13: 00007ffd0e671c08 R14: 431bde82d7b634db R15: 00007fce1ba5703b [ 91.904281][ T5823] [ 91.907312][ T5823] Modules linked in: [ 91.911501][ T5823] ---[ end trace 0000000000000000 ]--- [ 91.917213][ T5823] RIP: 0010:jfs_truncate_nolock+0x33b/0x340 [ 91.925161][ T5823] Code: e8 aa a9 25 08 e8 25 01 89 fe 48 c7 c7 80 6f c3 8b 48 c7 c6 a0 6b c3 8b ba 72 01 00 00 48 c7 c1 c0 6f c3 8b e8 76 4f f0 fd 90 <0f> 0b 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 [ 91.930507][ T1208] cfg80211: failed to load regulatory.db [ 91.946240][ T5823] RSP: 0018:ffffc900043af860 EFLAGS: 00010246 [ 91.956719][ T5823] RAX: 000000000000002d RBX: ffff8880770d1fd8 RCX: 6cc80c570e63f800 [ 91.964746][ T5823] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 91.972727][ T5823] RBP: ffffc900043af910 R08: ffffc900043af547 R09: 1ffff92000875ea8 [ 91.980768][ T5823] R10: dffffc0000000000 R11: fffff52000875ea9 R12: fffffa000000000a [ 91.988928][ T5823] R13: dffffc0000000000 R14: ffff8880770d1fd8 R15: 1ffff92000875f10 [ 91.996954][ T5823] FS: 0000555593cd0380(0000) GS:ffff888125c98000(0000) knlGS:0000000000000000 [ 92.005921][ T5823] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 92.012505][ T5823] CR2: 000055923e290368 CR3: 00000000338e4000 CR4: 00000000003526f0 [ 92.020518][ T5823] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 92.028536][ T5823] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 92.036575][ T5823] Kernel panic - not syncing: Fatal exception [ 92.042976][ T5823] Kernel Offset: disabled [ 92.047295][ T5823] Rebooting in 86400 seconds..