./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4043731037 <...> Warning: Permanently added '10.128.1.88' (ED25519) to the list of known hosts. execve("./syz-executor4043731037", ["./syz-executor4043731037"], 0x7ffe52bf64f0 /* 10 vars */) = 0 brk(NULL) = 0x55558fe16000 brk(0x55558fe16d00) = 0x55558fe16d00 arch_prctl(ARCH_SET_FS, 0x55558fe16380) = 0 set_tid_address(0x55558fe16650) = 5061 set_robust_list(0x55558fe16660, 24) = 0 rseq(0x55558fe16ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor4043731037", 4096) = 28 getrandom("\x7c\x1c\xd6\xb4\xef\xf3\x67\xf3", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558fe16d00 brk(0x55558fe37d00) = 0x55558fe37d00 brk(0x55558fe38000) = 0x55558fe38000 mprotect(0x7f30b7ac0000, 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) = 0x7f30af600000 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(0x7f30af600000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 close(4) = 0 mkdir("./file0", 0777) = 0 mount("/dev/loop0", "./file0", "jfs", 0, "") = 0 openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 chdir("./file0") = 0 syzkaller login: [ 72.883692][ T5061] loop0: detected capacity change from 0 to 32768 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 72.967421][ T5061] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN PTI [ 72.979512][ T5061] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 72.987922][ T5061] CPU: 0 PID: 5061 Comm: syz-executor404 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 [ 72.997982][ T5061] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 73.008062][ T5061] RIP: 0010:dtInsertEntry+0xd0c/0x1780 [ 73.013554][ T5061] Code: 83 e6 02 31 ff e8 a4 3f 75 fe 83 e3 02 75 3a e8 9a 3c 75 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 [ 73.033448][ T5061] RSP: 0018:ffffc9000381f060 EFLAGS: 00010202 [ 73.039524][ T5061] RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff88801a715a00 [ 73.047583][ T5061] RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 73.055554][ T5061] RBP: ffffc9000381f210 R08: ffffffff831fb7ac R09: ffffffff832296af [ 73.063616][ T5061] R10: 0000000000000004 R11: ffff88801a715a00 R12: ffff88807adfb130 [ 73.071589][ T5061] R13: ffffffffffffffff R14: dffffc0000000000 R15: 000000000000000d [ 73.079561][ T5061] FS: 000055558fe16380(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 73.088500][ T5061] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 73.095080][ T5061] CR2: 000000000066c7e0 CR3: 000000002ca48000 CR4: 00000000003506f0 [ 73.103053][ T5061] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 73.111136][ T5061] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 73.119212][ T5061] Call Trace: [ 73.122501][ T5061] [ 73.125447][ T5061] ? __die_body+0x88/0xe0 [ 73.129790][ T5061] ? die_addr+0x108/0x140 [ 73.134129][ T5061] ? exc_general_protection+0x3dd/0x5d0 [ 73.139723][ T5061] ? asm_exc_general_protection+0x26/0x30 [ 73.145465][ T5061] ? txLock+0xf8f/0x21a0 [ 73.149720][ T5061] ? dtInsertEntry+0xcec/0x1780 [ 73.154596][ T5061] ? dtInsertEntry+0xd0c/0x1780 [ 73.159474][ T5061] ? __pfx_dtInsertEntry+0x10/0x10 [ 73.164599][ T5061] ? rcu_is_watching+0x15/0xb0 [ 73.169382][ T5061] ? __mark_inode_dirty+0x805/0xdb0 [ 73.174595][ T5061] dtInsert+0xbf1/0x6b00 [ 73.178867][ T5061] ? mark_lock+0x9a/0x350 [ 73.183203][ T5061] ? __lock_acquire+0x1346/0x1fd0 [ 73.188242][ T5061] ? __pfx_dtInsert+0x10/0x10 [ 73.192931][ T5061] ? __pfx_lock_acquire+0x10/0x10 [ 73.197956][ T5061] ? txLock+0x2b5/0x21a0 [ 73.202204][ T5061] ? __pfx_lock_release+0x10/0x10 [ 73.207227][ T5061] ? do_raw_spin_lock+0x14f/0x370 [ 73.212281][ T5061] ? do_raw_spin_unlock+0x13c/0x8b0 [ 73.217496][ T5061] ? dtSearch+0x1d59/0x2520 [ 73.222007][ T5061] ? kfree+0x14a/0x380 [ 73.226087][ T5061] ? txLock+0x125b/0x21a0 [ 73.230436][ T5061] jfs_create+0x7ba/0xb90 [ 73.234780][ T5061] ? __pfx_jfs_create+0x10/0x10 [ 73.239639][ T5061] ? __pfx_jfs_lookup+0x10/0x10 [ 73.244526][ T5061] ? make_vfsuid+0x46/0x90 [ 73.248970][ T5061] ? bpf_lsm_inode_create+0x9/0x10 [ 73.254125][ T5061] ? security_inode_create+0xc2/0x110 [ 73.259521][ T5061] ? __pfx_jfs_create+0x10/0x10 [ 73.264410][ T5061] path_openat+0x1425/0x3240 [ 73.269045][ T5061] ? __pfx_path_openat+0x10/0x10 [ 73.274017][ T5061] do_filp_open+0x235/0x490 [ 73.278538][ T5061] ? __pfx_do_filp_open+0x10/0x10 [ 73.283588][ T5061] ? _raw_spin_unlock+0x28/0x50 [ 73.288458][ T5061] ? alloc_fd+0x59d/0x640 [ 73.292797][ T5061] do_sys_openat2+0x13e/0x1d0 [ 73.297496][ T5061] ? __pfx_do_sys_openat2+0x10/0x10 [ 73.302702][ T5061] ? lockdep_hardirqs_on+0x99/0x150 [ 73.307914][ T5061] ? _raw_spin_unlock_irq+0x2e/0x50 [ 73.313124][ T5061] ? ptrace_notify+0x279/0x380 [ 73.317899][ T5061] __x64_sys_openat+0x247/0x2a0 [ 73.322759][ T5061] ? __pfx___x64_sys_openat+0x10/0x10 [ 73.328143][ T5061] ? do_syscall_64+0x10a/0x240 [ 73.332908][ T5061] ? syscall_trace_enter+0x5f/0x150 [ 73.338114][ T5061] do_syscall_64+0xfb/0x240 [ 73.342633][ T5061] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 73.348538][ T5061] RIP: 0033:0x7f30b7a475f9 [ 73.352957][ T5061] 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 [ 73.372566][ T5061] RSP: 002b:00007fffd9c3bfb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 73.380988][ T5061] RAX: ffffffffffffffda RBX: 00007fffd9c3c198 RCX: 00007f30b7a475f9 [ 73.388961][ T5061] RDX: 000000000000275a RSI: 0000000020000080 RDI: 00000000ffffff9c [ 73.396931][ T5061] RBP: 00007f30b7ac0610 R08: 0000000000005e33 R09: 0000000000000000 [ 73.404923][ T5061] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 73.412894][ T5061] R13: 00007fffd9c3c188 R14: 0000000000000001 R15: 0000000000000001 [ 73.420879][ T5061] [ 73.423897][ T5061] Modules linked in: [ 73.428164][ T5061] ---[ end trace 0000000000000000 ]--- [ 73.434044][ T5061] RIP: 0010:dtInsertEntry+0xd0c/0x1780 [ 73.439583][ T5061] Code: 83 e6 02 31 ff e8 a4 3f 75 fe 83 e3 02 75 3a e8 9a 3c 75 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 [ 73.459249][ T5061] RSP: 0018:ffffc9000381f060 EFLAGS: 00010202 [ 73.465337][ T5061] RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff88801a715a00 [ 73.473347][ T5061] RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 73.481368][ T5061] RBP: ffffc9000381f210 R08: ffffffff831fb7ac R09: ffffffff832296af [ 73.489390][ T5061] R10: 0000000000000004 R11: ffff88801a715a00 R12: ffff88807adfb130 [ 73.497379][ T5061] R13: ffffffffffffffff R14: dffffc0000000000 R15: 000000000000000d [ 73.505397][ T5061] FS: 000055558fe16380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 [ 73.514369][ T5061] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 73.520992][ T5061] CR2: 0000557bf42357e0 CR3: 000000002ca48000 CR4: 00000000003506f0 [ 73.529035][ T5061] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 73.537019][ T5061] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 73.545074][ T5061] Kernel panic - not syncing: Fatal exception [ 73.551404][ T5061] Kernel Offset: disabled [ 73.555728][ T5061] Rebooting in 86400 seconds..