./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor632852838 <...> Warning: Permanently added '10.128.0.42' (ED25519) to the list of known hosts. [ 91.847907][ T92] cfg80211: failed to load regulatory.db execve("./syz-executor632852838", ["./syz-executor632852838"], 0x7ffca257d5b0 /* 10 vars */) = 0 brk(NULL) = 0x555574460000 brk(0x555574460d00) = 0x555574460d00 arch_prctl(ARCH_SET_FS, 0x555574460380) = 0 set_tid_address(0x555574460650) = 5825 set_robust_list(0x555574460660, 24) = 0 rseq(0x555574460ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor632852838", 4096) = 27 getrandom("\xcb\x5a\xf2\xd8\x2f\x53\x97\xad", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555574460d00 brk(0x555574481d00) = 0x555574481d00 brk(0x555574482000) = 0x555574482000 mprotect(0x7f26f9682000, 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 5826 attached [pid 5826] set_robust_list(0x555574460660, 24 [pid 5825] <... clone resumed>, child_tidptr=0x555574460650) = 5826 [pid 5826] <... set_robust_list resumed>) = 0 [pid 5826] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5826] setpgid(0, 0) = 0 [pid 5826] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5826] write(3, "1000", 4) = 4 [pid 5826] close(3) = 0 [pid 5826] write(1, "executing program\n", 18executing program ) = 18 [pid 5826] memfd_create("syzkaller", 0) = 3 [pid 5826] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f26f1000000 [pid 5826] 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 5826] munmap(0x7f26f1000000, 138412032) = 0 [pid 5826] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5826] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5826] close(3) = 0 [pid 5826] close(4) = 0 [pid 5826] mkdir("./file2", 0777) = 0 [ 92.351834][ T5826] loop0: detected capacity change from 0 to 32768 [pid 5826] mount("/dev/loop0", "./file2", "jfs", MS_REC|MS_STRICTATIME, "") = 0 [pid 5826] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5826] chdir("./file2") = 0 [pid 5826] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5826] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_DIRECT|O_NOATIME|O_CLOEXEC, 0777) = 4 [ 92.458503][ T30] audit: type=1800 audit(1748606463.388:2): pid=5826 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="syz-executor632" name="file1" dev="loop0" ino=4 res=0 errno=0 [ 92.490043][ T5826] BUG at fs/jfs/inode.c:370 assert(length >= 0) [ 92.496798][ T5826] ------------[ cut here ]------------ [ 92.502263][ T5826] kernel BUG at fs/jfs/inode.c:370! [ 92.507815][ T5826] Oops: invalid opcode: 0000 [#1] SMP KASAN PTI [ 92.514088][ T5826] CPU: 0 UID: 0 PID: 5826 Comm: syz-executor632 Not tainted 6.15.0-syzkaller-08486-gf66bc387efbe #0 PREEMPT(full) [ 92.526178][ T5826] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 92.536231][ T5826] RIP: 0010:jfs_truncate_nolock+0x33b/0x340 [ 92.542157][ T5826] 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 [ 92.561861][ T5826] RSP: 0018:ffffc900043cf860 EFLAGS: 00010246 [ 92.567954][ T5826] RAX: 000000000000002d RBX: ffff88807cbf8430 RCX: a3df0f73d85aac00 [ 92.575940][ T5826] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 92.583921][ T5826] RBP: ffffc900043cf910 R08: ffffc900043cf547 R09: 1ffff92000879ea8 [ 92.591905][ T5826] R10: dffffc0000000000 R11: fffff52000879ea9 R12: fffffa000000000a [ 92.599883][ T5826] R13: dffffc0000000000 R14: ffff88807cbf8430 R15: 1ffff92000879f10 [ 92.607886][ T5826] FS: 0000555574460380(0000) GS:ffff888125c98000(0000) knlGS:0000000000000000 [ 92.616820][ T5826] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 92.623406][ T5826] CR2: 00007f26f96860f8 CR3: 000000007b7bc000 CR4: 00000000003526f0 [ 92.631384][ T5826] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 92.639360][ T5826] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 92.647336][ T5826] Call Trace: [ 92.650621][ T5826] [ 92.653559][ T5826] ? down_write_nested+0x169/0x200 [ 92.658685][ T5826] ? __pfx_jfs_truncate_nolock+0x10/0x10 [ 92.664325][ T5826] ? __pfx_jfs_get_block+0x10/0x10 [ 92.669460][ T5826] jfs_write_failed+0x119/0x190 [ 92.674320][ T5826] jfs_direct_IO+0x1f4/0x220 [ 92.678917][ T5826] generic_file_direct_write+0x1d8/0x3e0 [ 92.684552][ T5826] ? file_update_time+0x416/0x490 [ 92.689581][ T5826] __generic_file_write_iter+0x11d/0x230 [ 92.695215][ T5826] ? generic_file_write_iter+0xfb/0x540 [ 92.700767][ T5826] generic_file_write_iter+0x10f/0x540 [ 92.706230][ T5826] ? lockdep_hardirqs_on+0x9c/0x150 [ 92.711444][ T5826] ? __pfx_generic_file_write_iter+0x10/0x10 [ 92.717437][ T5826] ? rcu_is_watching+0x15/0xb0 [ 92.722205][ T5826] ? trace_sched_exit_tp+0x38/0x120 [ 92.727409][ T5826] ? __lock_acquire+0xab9/0xd20 [ 92.732352][ T5826] ? rcu_read_lock_any_held+0xb3/0x120 [ 92.737819][ T5826] ? __pfx_rcu_read_lock_any_held+0x10/0x10 [ 92.743723][ T5826] vfs_write+0x548/0xa90 [ 92.747981][ T5826] ? __pfx_generic_file_write_iter+0x10/0x10 [ 92.753965][ T5826] ? __pfx_vfs_write+0x10/0x10 [ 92.758742][ T5826] ? _raw_spin_unlock_irq+0x23/0x50 [ 92.763952][ T5826] ? _raw_spin_unlock_irq+0x2e/0x50 [ 92.769169][ T5826] ksys_write+0x145/0x250 [ 92.773508][ T5826] ? __pfx_ksys_write+0x10/0x10 [ 92.778368][ T5826] do_syscall_64+0xfa/0x3b0 [ 92.782875][ T5826] ? lockdep_hardirqs_on+0x9c/0x150 [ 92.788069][ T5826] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 92.794138][ T5826] ? clear_bhb_loop+0x60/0xb0 [ 92.798834][ T5826] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 92.804726][ T5826] RIP: 0033:0x7f26f9609b99 [ 92.809163][ T5826] 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 [ 92.828772][ T5826] RSP: 002b:00007fffe6feb758 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 92.837189][ T5826] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f26f9609b99 [ 92.845166][ T5826] RDX: 00000000000000a0 RSI: 0000200000000340 RDI: 0000000000000004 [ 92.853139][ T5826] RBP: 00007f26f96825f0 R08: 0000000000000000 R09: 00005555744614c0 [ 92.861119][ T5826] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffe6feb780 [ 92.869096][ T5826] R13: 00007fffe6feb9a8 R14: 431bde82d7b634db R15: 00007f26f965203b [ 92.877074][ T5826] [ 92.880110][ T5826] Modules linked in: [ 92.884349][ T5826] ---[ end trace 0000000000000000 ]--- [ 92.891986][ T5826] RIP: 0010:jfs_truncate_nolock+0x33b/0x340 [ 92.898289][ T5826] 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 [ 92.917989][ T5826] RSP: 0018:ffffc900043cf860 EFLAGS: 00010246 [ 92.924096][ T5826] RAX: 000000000000002d RBX: ffff88807cbf8430 RCX: a3df0f73d85aac00 [ 92.932170][ T5826] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 92.940205][ T5826] RBP: ffffc900043cf910 R08: ffffc900043cf547 R09: 1ffff92000879ea8 [ 92.948224][ T5826] R10: dffffc0000000000 R11: fffff52000879ea9 R12: fffffa000000000a [ 92.956233][ T5826] R13: dffffc0000000000 R14: ffff88807cbf8430 R15: 1ffff92000879f10 [ 92.964207][ T5826] FS: 0000555574460380(0000) GS:ffff888125d98000(0000) knlGS:0000000000000000 [ 92.973163][ T5826] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 92.979775][ T5826] CR2: 0000555d2388d210 CR3: 000000007b7bc000 CR4: 00000000003526f0 [ 92.987781][ T5826] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 92.995799][ T5826] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 93.003802][ T5826] Kernel panic - not syncing: Fatal exception [ 93.009999][ T5826] Kernel Offset: disabled [ 93.014324][ T5826] Rebooting in 86400 seconds..