./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1819371720 <...> Warning: Permanently added '10.128.0.168' (ED25519) to the list of known hosts. execve("./syz-executor1819371720", ["./syz-executor1819371720"], 0x7ffe532de8b0 /* 10 vars */) = 0 brk(NULL) = 0x5555565c6000 brk(0x5555565c6d00) = 0x5555565c6d00 arch_prctl(ARCH_SET_FS, 0x5555565c6380) = 0 set_tid_address(0x5555565c6650) = 5024 set_robust_list(0x5555565c6660, 24) = 0 rseq(0x5555565c6ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1819371720", 4096) = 28 getrandom("\xa0\x91\xbe\x05\x18\x3c\x2b\x16", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555565c6d00 brk(0x5555565e7d00) = 0x5555565e7d00 brk(0x5555565e8000) = 0x5555565e8000 mprotect(0x7f3600723000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 memfd_create("syzkaller", 0) = 3 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f35f826d000 [ 59.120257][ T5024] syz-executor181[5024]: memfd_create() called without MFD_EXEC or MFD_NOEXEC_SEAL set 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(0x7f35f826d000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 mkdir("./file0", 0777) = 0 mount("/dev/loop0", "./file0", "jfs", 0, "") = 0 openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 chdir("./file0") = 0 ioctl(4, LOOP_CLR_FD) = 0 close(4) = 0 [ 59.273341][ T5024] loop0: detected capacity change from 0 to 32768 [ 59.297305][ T5024] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN [ 59.309235][ T5024] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 59.317662][ T5024] CPU: 0 PID: 5024 Comm: syz-executor181 Not tainted 6.6.0-syzkaller-00207-g14ab6d425e80 #0 [ 59.327746][ T5024] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 [ 59.337806][ T5024] RIP: 0010:dtInsertEntry+0xd0c/0x1770 [ 59.343286][ T5024] Code: 83 e6 02 31 ff e8 74 6e 7d fe 83 e3 02 75 3a e8 da 6b 7d fe 48 8b 9c 24 a8 00 00 00 48 83 c3 08 48 89 d8 48 c1 e8 03 4c 89 f2 <42> 0f b6 04 30 84 c0 74 3e 89 d9 80 e1 07 38 c1 7c 35 48 89 df e8 [ 59.362931][ T5024] RSP: 0018:ffffc900040f7080 EFLAGS: 00010202 [ 59.369076][ T5024] RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff888027ced940 [ 59.377222][ T5024] RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 59.385185][ T5024] RBP: ffffc900040f7230 R08: ffffffff8310b09c R09: 1ffff1100ed1a5d3 [ 59.393310][ T5024] R10: dffffc0000000000 R11: ffffed100ed1a5d4 R12: ffff8880768d3130 [ 59.401268][ T5024] R13: dffffc0000000000 R14: dffffc0000000000 R15: 0000000000000008 [ 59.409402][ T5024] FS: 00005555565c6380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 59.418316][ T5024] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 59.424900][ T5024] CR2: 000000000146d398 CR3: 000000006e738000 CR4: 00000000003506f0 [ 59.432880][ T5024] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 59.440844][ T5024] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 59.448905][ T5024] Call Trace: [ 59.452176][ T5024] [ 59.455096][ T5024] ? __die_body+0x8b/0xe0 [ 59.459607][ T5024] ? die_addr+0xc9/0x100 [ 59.463835][ T5024] ? exc_general_protection+0x3c2/0x5b0 [ 59.469579][ T5024] ? asm_exc_general_protection+0x26/0x30 [ 59.475289][ T5024] ? dtInsertEntry+0xcec/0x1770 [ 59.480126][ T5024] ? dtInsertEntry+0xd0c/0x1770 [ 59.484973][ T5024] ? dtInsert+0x6b00/0x6b00 [ 59.489490][ T5024] ? rcu_is_watching+0x15/0xb0 [ 59.494271][ T5024] ? __mark_inode_dirty+0x7fb/0xd90 [ 59.499457][ T5024] dtInsert+0xbf1/0x6b00 [ 59.503778][ T5024] ? kasan_save_free_info+0x28/0x40 [ 59.508968][ T5024] ? __x64_sys_openat+0x247/0x290 [ 59.514270][ T5024] ? do_syscall_64+0x41/0xc0 [ 59.518850][ T5024] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 59.524914][ T5024] ? UniStrupr+0x2c0/0x2c0 [ 59.529319][ T5024] ? read_lock_is_recursive+0x20/0x20 [ 59.534678][ T5024] ? txLock+0x2b5/0x21a0 [ 59.538906][ T5024] ? __lock_acquire+0x7f70/0x7f70 [ 59.543922][ T5024] ? do_raw_spin_lock+0x14d/0x3a0 [ 59.548953][ T5024] ? do_raw_spin_unlock+0x13b/0x8b0 [ 59.554319][ T5024] ? txLock+0x125a/0x21a0 [ 59.558649][ T5024] jfs_create+0x7b6/0xb90 [ 59.562973][ T5024] ? jfs_lookup+0x410/0x410 [ 59.567482][ T5024] ? jfs_get_parent+0xa0/0xa0 [ 59.572419][ T5024] ? make_vfsuid+0x6f/0xb0 [ 59.576827][ T5024] ? bpf_lsm_inode_create+0x9/0x10 [ 59.581955][ T5024] ? security_inode_create+0xb8/0x100 [ 59.587665][ T5024] ? jfs_lookup+0x410/0x410 [ 59.592158][ T5024] path_openat+0x13fa/0x3280 [ 59.596755][ T5024] ? do_filp_open+0x490/0x490 [ 59.601427][ T5024] do_filp_open+0x234/0x490 [ 59.605921][ T5024] ? vfs_tmpfile+0x500/0x500 [ 59.610506][ T5024] ? _raw_spin_unlock+0x28/0x40 [ 59.615357][ T5024] ? alloc_fd+0x59c/0x640 [ 59.619761][ T5024] do_sys_openat2+0x13e/0x1d0 [ 59.624428][ T5024] ? do_sys_open+0x230/0x230 [ 59.629009][ T5024] ? lockdep_hardirqs_on+0x98/0x140 [ 59.634210][ T5024] ? _raw_spin_unlock_irq+0x2e/0x50 [ 59.639395][ T5024] ? ptrace_notify+0x278/0x380 [ 59.644161][ T5024] __x64_sys_openat+0x247/0x290 [ 59.649007][ T5024] ? __ia32_sys_open+0x270/0x270 [ 59.653937][ T5024] ? syscall_enter_from_user_mode+0x32/0x230 [ 59.660698][ T5024] ? syscall_enter_from_user_mode+0x8c/0x230 [ 59.666666][ T5024] do_syscall_64+0x41/0xc0 [ 59.671164][ T5024] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 59.677048][ T5024] RIP: 0033:0x7f36006aa5f9 [ 59.681451][ T5024] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 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 [ 59.701052][ T5024] RSP: 002b:00007ffdece96618 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 59.709526][ T5024] RAX: ffffffffffffffda RBX: 00007ffdece967f8 RCX: 00007f36006aa5f9 [ 59.717661][ T5024] RDX: 000000000000275a RSI: 00000000200001c0 RDI: 00000000ffffff9c [ 59.725618][ T5024] RBP: 00007f3600723610 R08: 0000000000005e04 R09: 0000000000000000 [ 59.733574][ T5024] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 59.741622][ T5024] R13: 00007ffdece967e8 R14: 0000000000000001 R15: 0000000000000001 [ 59.749673][ T5024] [ 59.752689][ T5024] Modules linked in: [ 59.756913][ T5024] ---[ end trace 0000000000000000 ]--- [ 59.762393][ T5024] RIP: 0010:dtInsertEntry+0xd0c/0x1770 [ 59.767923][ T5024] Code: 83 e6 02 31 ff e8 74 6e 7d fe 83 e3 02 75 3a e8 da 6b 7d fe 48 8b 9c 24 a8 00 00 00 48 83 c3 08 48 89 d8 48 c1 e8 03 4c 89 f2 <42> 0f b6 04 30 84 c0 74 3e 89 d9 80 e1 07 38 c1 7c 35 48 89 df e8 [ 59.787565][ T5024] RSP: 0018:ffffc900040f7080 EFLAGS: 00010202 [ 59.794347][ T5024] RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff888027ced940 [ 59.802323][ T5024] RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 59.810319][ T5024] RBP: ffffc900040f7230 R08: ffffffff8310b09c R09: 1ffff1100ed1a5d3 [ 59.818463][ T5024] R10: dffffc0000000000 R11: ffffed100ed1a5d4 R12: ffff8880768d3130 [ 59.826643][ T5024] R13: dffffc0000000000 R14: dffffc0000000000 R15: 0000000000000008 [ 59.834861][ T5024] FS: 00005555565c6380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 59.843776][ T5024] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 59.850384][ T5024] CR2: 000000000146d398 CR3: 000000006e738000 CR4: 00000000003506f0 [ 59.858416][ T5024] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 59.866426][ T5024] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 59.874446][ T5024] Kernel panic - not syncing: Fatal exception [ 59.880618][ T5024] Kernel Offset: disabled [ 59.884924][ T5024] Rebooting in 86400 seconds..