./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1322990285 <...> Warning: Permanently added '10.128.1.173' (ED25519) to the list of known hosts. execve("./syz-executor1322990285", ["./syz-executor1322990285"], 0x7ffd0308e420 /* 10 vars */) = 0 brk(NULL) = 0x5555680ef000 brk(0x5555680efd00) = 0x5555680efd00 arch_prctl(ARCH_SET_FS, 0x5555680ef380) = 0 set_tid_address(0x5555680ef650) = 5078 set_robust_list(0x5555680ef660, 24) = 0 rseq(0x5555680efca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1322990285", 4096) = 28 getrandom("\xf7\x49\x76\x09\x47\xbd\xa5\x3e", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555680efd00 brk(0x555568110d00) = 0x555568110d00 brk(0x555568111000) = 0x555568111000 mprotect(0x7f5886eeb000, 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) = 0x7f587ea00000 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(0x7f587ea00000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 close(4) = 0 mkdir("./bus", 0777) = 0 mount("/dev/loop0", "./bus", "jfs", 0, "") = 0 syzkaller login: [ 76.602055][ T5078] loop0: detected capacity change from 0 to 32768 openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 chdir("./bus") = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) openat(AT_FDCWD, "cpu.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [ 76.705942][ T5078] find_entry called with index >= next_index [ 76.714704][ T5078] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN PTI [ 76.726809][ T5078] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 76.735231][ T5078] CPU: 0 PID: 5078 Comm: syz-executor132 Not tainted 6.9.0-syzkaller-01049-g8815da98e06a #0 [ 76.745312][ T5078] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 76.755411][ T5078] RIP: 0010:dtInsertEntry+0xd0c/0x1780 [ 76.760940][ T5078] Code: 83 e6 02 31 ff e8 64 be 72 fe 83 e3 02 75 3a e8 5a bb 72 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 [ 76.780607][ T5078] RSP: 0018:ffffc90003def060 EFLAGS: 00010202 [ 76.786809][ T5078] RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff88802e97da00 [ 76.794813][ T5078] RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 76.802810][ T5078] RBP: ffffc90003def210 R08: ffffffff832357bc R09: 1ffff1100ed3c25b [ 76.810798][ T5078] R10: dffffc0000000000 R11: ffffed100ed3c25c R12: ffff8880769e1570 [ 76.818866][ T5078] R13: dffffc0000000000 R14: dffffc0000000000 R15: 000000000000000d [ 76.826876][ T5078] FS: 00005555680ef380(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 76.835816][ T5078] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 76.842400][ T5078] CR2: 0000564e144a9bd8 CR3: 0000000076264000 CR4: 00000000003506f0 [ 76.850384][ T5078] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 76.858367][ T5078] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 76.866357][ T5078] Call Trace: [ 76.869647][ T5078] [ 76.872587][ T5078] ? __die_body+0x88/0xe0 [ 76.876927][ T5078] ? die_addr+0x108/0x140 [ 76.881267][ T5078] ? exc_general_protection+0x3dd/0x5d0 [ 76.886853][ T5078] ? asm_exc_general_protection+0x26/0x30 [ 76.892596][ T5078] ? dtInsertEntry+0xcec/0x1780 [ 76.897457][ T5078] ? dtInsertEntry+0xd0c/0x1780 [ 76.902327][ T5078] ? __pfx_dtInsertEntry+0x10/0x10 [ 76.907446][ T5078] ? rcu_is_watching+0x15/0xb0 [ 76.912220][ T5078] ? __mark_inode_dirty+0x41c/0xe20 [ 76.917433][ T5078] dtInsert+0xbf1/0x6b00 [ 76.921691][ T5078] ? mark_lock+0x9a/0x350 [ 76.926056][ T5078] ? __lock_acquire+0x1346/0x1fd0 [ 76.931108][ T5078] ? __pfx_dtInsert+0x10/0x10 [ 76.935796][ T5078] ? __pfx_lock_acquire+0x10/0x10 [ 76.940829][ T5078] ? txLock+0x2b5/0x21a0 [ 76.945090][ T5078] ? __pfx_lock_release+0x10/0x10 [ 76.950214][ T5078] ? do_raw_spin_lock+0x14f/0x370 [ 76.955256][ T5078] ? do_raw_spin_unlock+0x13c/0x8b0 [ 76.960468][ T5078] ? dtSearch+0x1d59/0x2520 [ 76.964983][ T5078] ? kfree+0x153/0x3b0 [ 76.969097][ T5078] ? txLock+0x125b/0x21a0 [ 76.973474][ T5078] jfs_create+0x7ba/0xb90 [ 76.977848][ T5078] ? __pfx_jfs_create+0x10/0x10 [ 76.982733][ T5078] ? __pfx_jfs_lookup+0x10/0x10 [ 76.987617][ T5078] ? make_vfsuid+0x46/0x90 [ 76.992058][ T5078] ? bpf_lsm_inode_create+0x9/0x10 [ 76.997196][ T5078] ? security_inode_create+0xc2/0x110 [ 77.002775][ T5078] ? __pfx_jfs_create+0x10/0x10 [ 77.007645][ T5078] path_openat+0x1425/0x3240 [ 77.012292][ T5078] ? __pfx_path_openat+0x10/0x10 [ 77.017265][ T5078] do_filp_open+0x235/0x490 [ 77.021787][ T5078] ? __pfx_do_filp_open+0x10/0x10 [ 77.026849][ T5078] ? _raw_spin_unlock+0x28/0x50 [ 77.031725][ T5078] ? alloc_fd+0x59d/0x640 [ 77.036092][ T5078] do_sys_openat2+0x13e/0x1d0 [ 77.040797][ T5078] ? __pfx_do_sys_openat2+0x10/0x10 [ 77.046013][ T5078] ? lockdep_hardirqs_on+0x99/0x150 [ 77.051224][ T5078] ? _raw_spin_unlock_irq+0x2e/0x50 [ 77.056460][ T5078] ? ptrace_notify+0x279/0x380 [ 77.061235][ T5078] __x64_sys_openat+0x247/0x2a0 [ 77.066106][ T5078] ? __pfx___x64_sys_openat+0x10/0x10 [ 77.071503][ T5078] ? do_syscall_64+0x102/0x240 [ 77.076289][ T5078] do_syscall_64+0xf5/0x240 [ 77.080815][ T5078] ? clear_bhb_loop+0x35/0x90 [ 77.085515][ T5078] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 77.091431][ T5078] RIP: 0033:0x7f5886e72639 [ 77.095875][ T5078] 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 [ 77.115501][ T5078] RSP: 002b:00007ffd2f3a43a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 77.123949][ T5078] RAX: ffffffffffffffda RBX: 00007ffd2f3a4588 RCX: 00007f5886e72639 [ 77.131981][ T5078] RDX: 000000000000275a RSI: 0000000020000000 RDI: 00000000ffffff9c [ 77.139980][ T5078] RBP: 00007f5886eeb610 R08: 0000000000000000 R09: 0000000000000000 [ 77.147972][ T5078] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 77.155950][ T5078] R13: 00007ffd2f3a4578 R14: 0000000000000001 R15: 0000000000000001 [ 77.163947][ T5078] [ 77.166998][ T5078] Modules linked in: [ 77.171155][ T5078] ---[ end trace 0000000000000000 ]--- [ 77.176644][ T5078] RIP: 0010:dtInsertEntry+0xd0c/0x1780 [ 77.182194][ T5078] Code: 83 e6 02 31 ff e8 64 be 72 fe 83 e3 02 75 3a e8 5a bb 72 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 [ 77.201897][ T5078] RSP: 0018:ffffc90003def060 EFLAGS: 00010202 [ 77.208037][ T5078] RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff88802e97da00 [ 77.216101][ T5078] RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 77.224149][ T5078] RBP: ffffc90003def210 R08: ffffffff832357bc R09: 1ffff1100ed3c25b [ 77.232223][ T5078] R10: dffffc0000000000 R11: ffffed100ed3c25c R12: ffff8880769e1570 [ 77.240294][ T5078] R13: dffffc0000000000 R14: dffffc0000000000 R15: 000000000000000d [ 77.248382][ T5078] FS: 00005555680ef380(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 77.257379][ T5078] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.264055][ T5078] CR2: 0000564e144a9bd8 CR3: 0000000076264000 CR4: 00000000003506f0 [ 77.272096][ T5078] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 77.280212][ T5078] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 77.288345][ T5078] Kernel panic - not syncing: Fatal exception [ 77.294621][ T5078] Kernel Offset: disabled [ 77.298950][ T5078] Rebooting in 86400 seconds..