./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1915165712 <...> Warning: Permanently added '10.128.0.249' (ECDSA) to the list of known hosts. execve("./syz-executor1915165712", ["./syz-executor1915165712"], 0x7ffd36b112d0 /* 10 vars */) = 0 brk(NULL) = 0x555555d17000 brk(0x555555d17c40) = 0x555555d17c40 arch_prctl(ARCH_SET_FS, 0x555555d17300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor1915165712", 4096) = 28 brk(0x555555d38c40) = 0x555555d38c40 brk(0x555555d39000) = 0x555555d39000 mprotect(0x7f92cbaed000, 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) = 0x7f92c362e000 syzkaller login: [ 70.917662][ T4999] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=4999 'syz-executor191' 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(0x7f92c362e000, 16777216) = 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 [ 71.087552][ T4999] loop0: detected capacity change from 0 to 32768 [ 71.113221][ T4999] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN [ 71.124989][ T4999] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 71.133441][ T4999] CPU: 1 PID: 4999 Comm: syz-executor191 Not tainted 6.4.0-rc5-syzkaller-00016-ga4d7d7011219 #0 [ 71.143884][ T4999] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 [ 71.153943][ T4999] RIP: 0010:dtInsertEntry+0xd0c/0x1770 [ 71.159437][ T4999] Code: 83 e6 02 31 ff e8 d4 47 83 fe 83 e3 02 75 3a e8 3a 45 83 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 [ 71.179039][ T4999] RSP: 0018:ffffc90003b1f060 EFLAGS: 00010202 [ 71.185101][ T4999] RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff88807f280000 [ 71.193065][ T4999] RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 71.201027][ T4999] RBP: ffffc90003b1f210 R08: ffffffff830839ec R09: ffffed100f13b5d4 [ 71.208995][ T4999] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880789db130 [ 71.216959][ T4999] R13: dffffc0000000000 R14: dffffc0000000000 R15: 0000000000000008 [ 71.224926][ T4999] FS: 0000555555d17300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 71.233847][ T4999] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 71.240424][ T4999] CR2: 0000000000b60398 CR3: 000000002a4b6000 CR4: 00000000003506e0 [ 71.248389][ T4999] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 71.256367][ T4999] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 71.264343][ T4999] Call Trace: [ 71.267625][ T4999] [ 71.270579][ T4999] ? __die_body+0x5e/0xa0 [ 71.274914][ T4999] ? die_addr+0x99/0xc0 [ 71.279072][ T4999] ? exc_general_protection+0x3c2/0x5b0 [ 71.284632][ T4999] ? asm_exc_general_protection+0x26/0x30 [ 71.290361][ T4999] ? dtInsertEntry+0xcec/0x1770 [ 71.295231][ T4999] ? dtInsertEntry+0xd0c/0x1770 [ 71.300093][ T4999] ? txLock+0x251/0x1fb0 [ 71.304355][ T4999] ? dtInsert+0x6b00/0x6b00 [ 71.308866][ T4999] ? txLock+0xe2f/0x1fb0 [ 71.313119][ T4999] ? __mark_inode_dirty+0x7fb/0xd90 [ 71.318329][ T4999] dtInsert+0xbf1/0x6b00 [ 71.322586][ T4999] ? path_openat+0x13df/0x3170 [ 71.327351][ T4999] ? do_filp_open+0x234/0x490 [ 71.332031][ T4999] ? __x64_sys_openat+0x247/0x290 [ 71.337074][ T4999] ? mark_lock+0x9a/0x340 [ 71.341416][ T4999] ? __lock_acquire+0x1316/0x2070 [ 71.346446][ T4999] ? UniStrupr+0x2c0/0x2c0 [ 71.350890][ T4999] ? read_lock_is_recursive+0x20/0x20 [ 71.356274][ T4999] ? txLock+0x251/0x1fb0 [ 71.360524][ T4999] ? __lock_acquire+0x2070/0x2070 [ 71.365557][ T4999] ? do_raw_spin_lock+0x14d/0x3a0 [ 71.370593][ T4999] ? do_raw_spin_unlock+0x13b/0x8b0 [ 71.375808][ T4999] ? txLock+0x10ce/0x1fb0 [ 71.380190][ T4999] jfs_create+0x7b6/0xbb0 [ 71.384529][ T4999] ? jfs_lookup+0x410/0x410 [ 71.389035][ T4999] ? jfs_get_parent+0xa0/0xa0 [ 71.393727][ T4999] ? make_vfsuid+0x6f/0xb0 [ 71.398161][ T4999] ? bpf_lsm_inode_create+0x9/0x10 [ 71.403274][ T4999] ? security_inode_create+0xb8/0x100 [ 71.408651][ T4999] ? jfs_lookup+0x410/0x410 [ 71.413159][ T4999] path_openat+0x13df/0x3170 [ 71.417769][ T4999] ? do_filp_open+0x490/0x490 [ 71.422462][ T4999] do_filp_open+0x234/0x490 [ 71.426969][ T4999] ? vfs_tmpfile+0x4a0/0x4a0 [ 71.431593][ T4999] ? _raw_spin_unlock+0x28/0x40 [ 71.436445][ T4999] ? alloc_fd+0x59c/0x640 [ 71.440792][ T4999] do_sys_openat2+0x13f/0x500 [ 71.445479][ T4999] ? print_irqtrace_events+0x220/0x220 [ 71.450951][ T4999] ? do_sys_open+0x230/0x230 [ 71.455572][ T4999] ? lockdep_hardirqs_on+0x98/0x140 [ 71.460777][ T4999] ? _raw_spin_unlock_irq+0x2e/0x50 [ 71.465999][ T4999] ? ptrace_notify+0x278/0x380 [ 71.470770][ T4999] __x64_sys_openat+0x247/0x290 [ 71.475629][ T4999] ? __ia32_sys_open+0x270/0x270 [ 71.480580][ T4999] ? syscall_enter_from_user_mode+0x32/0x230 [ 71.486568][ T4999] ? syscall_enter_from_user_mode+0x8c/0x230 [ 71.492556][ T4999] do_syscall_64+0x41/0xc0 [ 71.496987][ T4999] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 71.502884][ T4999] RIP: 0033:0x7f92cba7a789 [ 71.507304][ T4999] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 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 c0 ff ff ff f7 d8 64 89 01 48 [ 71.526932][ T4999] RSP: 002b:00007ffe69068c88 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 71.535352][ T4999] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f92cba7a789 [ 71.543324][ T4999] RDX: 000000000000275a RSI: 00000000200001c0 RDI: 00000000ffffff9c [ 71.551293][ T4999] RBP: 00007f92cba3a020 R08: 0000000000005e04 R09: 0000000000000000 [ 71.559274][ T4999] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f92cba3a0b0 [ 71.567247][ T4999] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 71.575227][ T4999] [ 71.578248][ T4999] Modules linked in: [ 71.584733][ T4999] ---[ end trace 0000000000000000 ]--- [ 71.590227][ T4999] RIP: 0010:dtInsertEntry+0xd0c/0x1770 [ 71.595766][ T4999] Code: 83 e6 02 31 ff e8 d4 47 83 fe 83 e3 02 75 3a e8 3a 45 83 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 [ 71.615911][ T4999] RSP: 0018:ffffc90003b1f060 EFLAGS: 00010202 [ 71.621983][ T4999] RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff88807f280000 [ 71.629994][ T4999] RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 71.637998][ T4999] RBP: ffffc90003b1f210 R08: ffffffff830839ec R09: ffffed100f13b5d4 [ 71.646000][ T4999] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880789db130 [ 71.654010][ T4999] R13: dffffc0000000000 R14: dffffc0000000000 R15: 0000000000000008 [ 71.661976][ T4999] FS: 0000555555d17300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 71.670930][ T4999] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 71.677538][ T4999] CR2: 00005649d4adbff0 CR3: 000000002a4b6000 CR4: 00000000003506f0 [ 71.685541][ T4999] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 71.693523][ T4999] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 71.701538][ T4999] Kernel panic - not syncing: Fatal exception [ 71.707845][ T4999] Kernel Offset: disabled [ 71.712179][ T4999] Rebooting in 86400 seconds..