./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4180028934 <...> Warning: Permanently added '10.128.0.101' (ED25519) to the list of known hosts. execve("./syz-executor4180028934", ["./syz-executor4180028934"], 0x7ffc6e374390 /* 10 vars */) = 0 brk(NULL) = 0x5555558fa000 brk(0x5555558fad00) = 0x5555558fad00 arch_prctl(ARCH_SET_FS, 0x5555558fa380) = 0 set_tid_address(0x5555558fa650) = 5032 set_robust_list(0x5555558fa660, 24) = 0 rseq(0x5555558faca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor4180028934", 4096) = 28 getrandom("\x67\xa8\xf6\x2d\x3f\x89\x56\x7c", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555558fad00 brk(0x55555591bd00) = 0x55555591bd00 brk(0x55555591c000) = 0x55555591c000 mprotect(0x7f6d77327000, 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) = 0x7f6d6ee64000 [ 60.406732][ T5032] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=5032 'syz-executor418' 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(0x7f6d6ee64000, 16777216) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 mkdir("./file0", 0777) = 0 [ 60.601005][ T5032] loop0: detected capacity change from 0 to 32768 [ 60.610693][ T5032] gfs2: fsid=noยล ar?d: Trying to join cluster "lock_nolock", "noยล ar?d" [ 60.619517][ T5032] gfs2: fsid=noยล ar?d: Now mounting FS (format 1801)... [ 60.627565][ T5032] syz-executor418: attempt to access beyond end of device [ 60.627565][ T5032] loop0: rw=12288, sector=131072, nr_sectors = 8 limit=32768 [ 60.642047][ T5032] general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] PREEMPT SMP KASAN [ 60.653820][ T5032] KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f] [ 60.662340][ T5032] CPU: 1 PID: 5032 Comm: syz-executor418 Not tainted 6.5.0-rc4-next-20230801-syzkaller #0 [ 60.672261][ T5032] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 [ 60.682555][ T5032] RIP: 0010:gfs2_lookup_simple+0xc6/0x160 [ 60.688317][ T5032] Code: 74 24 20 f7 d0 89 44 24 20 e8 66 d3 ff ff 48 85 c0 0f 84 85 00 00 00 48 89 c3 e8 e5 01 e3 fd 48 8d 7b 30 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 75 7b 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 30 49 [ 60.708044][ T5032] RSP: 0018:ffffc900039ef848 EFLAGS: 00010206 [ 60.714146][ T5032] RAX: 0000000000000005 RBX: fffffffffffffffb RCX: 0000000000000000 [ 60.722141][ T5032] RDX: ffff888015bf8000 RSI: ffffffff83a38d4b RDI: 000000000000002b [ 60.730136][ T5032] RBP: 1ffff9200073df09 R08: 0000000000000005 R09: 0000000000000000 [ 60.738146][ T5032] R10: 0000000000000001 R11: 0000000000000001 R12: dffffc0000000000 [ 60.746227][ T5032] R13: ffffffff8ab99700 R14: ffff888019f94000 R15: ffff8880783f06b8 [ 60.754243][ T5032] FS: 00005555558fa380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 60.763219][ T5032] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 60.769830][ T5032] CR2: 0000557976244798 CR3: 0000000074978000 CR4: 00000000003506e0 [ 60.777836][ T5032] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 60.785832][ T5032] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 60.793824][ T5032] Call Trace: [ 60.797121][ T5032] [ 60.800071][ T5032] ? die_addr+0x3b/0xa0 [ 60.804271][ T5032] ? exc_general_protection+0x154/0x230 [ 60.809869][ T5032] ? asm_exc_general_protection+0x26/0x30 [ 60.815804][ T5032] ? gfs2_lookup_simple+0xbb/0x160 [ 60.820960][ T5032] ? gfs2_lookup_simple+0xc6/0x160 [ 60.826110][ T5032] ? gfs2_lookup_simple+0xbb/0x160 [ 60.831258][ T5032] ? gfs2_rename2+0xa0/0xa0 [ 60.835795][ T5032] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 60.841733][ T5032] init_inodes+0x495/0x2e30 [ 60.846271][ T5032] ? spin_bug+0x1d0/0x1d0 [ 60.850642][ T5032] ? end_bio_io_page+0xd0/0xd0 [ 60.855443][ T5032] ? init_sb+0x9d8/0x10e0 [ 60.859810][ T5032] ? snprintf+0xc8/0x100 [ 60.864084][ T5032] ? vsprintf+0x30/0x30 [ 60.868381][ T5032] ? __debugfs_create_file+0x446/0x6a0 [ 60.873882][ T5032] ? gfs2_fill_super+0x1a9e/0x2b10 [ 60.879160][ T5032] gfs2_fill_super+0x1a9e/0x2b10 [ 60.884148][ T5032] ? rcu_is_watching+0x12/0xb0 [ 60.888954][ T5032] ? gfs2_reconfigure+0xee0/0xee0 [ 60.894030][ T5032] ? bit_wait_timeout+0x160/0x160 [ 60.899136][ T5032] ? gfs2_fill_super+0x1736/0x2b10 [ 60.904281][ T5032] ? down_write+0x14f/0x200 [ 60.908839][ T5032] ? down_write_killable_nested+0x250/0x250 [ 60.914788][ T5032] ? sb_set_blocksize+0xf6/0x120 [ 60.919790][ T5032] get_tree_bdev+0x390/0x6a0 [ 60.924523][ T5032] ? gfs2_reconfigure+0xee0/0xee0 [ 60.929592][ T5032] ? sget_fc+0x860/0x860 [ 60.933879][ T5032] ? bpf_lsm_sb_eat_lsm_opts+0x9/0x10 [ 60.939298][ T5032] ? apparmor_capable+0x1da/0x4e0 [ 60.944365][ T5032] gfs2_get_tree+0x4e/0x280 [ 60.948916][ T5032] vfs_get_tree+0x88/0x350 [ 60.953461][ T5032] path_mount+0x1492/0x1ed0 [ 60.958004][ T5032] ? kmem_cache_free+0xf0/0x490 [ 60.962935][ T5032] ? finish_automount+0xa50/0xa50 [ 60.968103][ T5032] ? putname+0x101/0x140 [ 60.972388][ T5032] __x64_sys_mount+0x293/0x310 [ 60.977196][ T5032] ? copy_mnt_ns+0xb60/0xb60 [ 60.981834][ T5032] ? _raw_spin_unlock_irq+0x2e/0x50 [ 60.987084][ T5032] ? ptrace_notify+0xf4/0x130 [ 60.991803][ T5032] do_syscall_64+0x38/0xb0 [ 60.996259][ T5032] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 61.002279][ T5032] RIP: 0033:0x7f6d772a2c3a [ 61.006720][ T5032] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 61.026365][ T5032] RSP: 002b:00007fff3af18918 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 61.034822][ T5032] RAX: ffffffffffffffda RBX: 00007fff3af18920 RCX: 00007f6d772a2c3a [ 61.042839][ T5032] RDX: 0000000020000000 RSI: 0000000020000040 RDI: 00007fff3af18920 [ 61.050834][ T5032] RBP: 0000000000000004 R08: 00007fff3af18960 R09: 00000000000125fe [ 61.058924][ T5032] R10: 0000000000000819 R11: 0000000000000282 R12: 00007fff3af18960 [ 61.067116][ T5032] R13: 0000000000000003 R14: 0000000001000000 R15: 0000000000000001 [ 61.075134][ T5032] [ 61.078272][ T5032] Modules linked in: [ 61.082555][ T5032] ---[ end trace 0000000000000000 ]--- [ 61.088285][ T5032] RIP: 0010:gfs2_lookup_simple+0xc6/0x160 [ 61.094076][ T5032] Code: 74 24 20 f7 d0 89 44 24 20 e8 66 d3 ff ff 48 85 c0 0f 84 85 00 00 00 48 89 c3 e8 e5 01 e3 fd 48 8d 7b 30 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 75 7b 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 30 49 [ 61.113776][ T5032] RSP: 0018:ffffc900039ef848 EFLAGS: 00010206 [ 61.119907][ T5032] RAX: 0000000000000005 RBX: fffffffffffffffb RCX: 0000000000000000 [ 61.127894][ T5032] RDX: ffff888015bf8000 RSI: ffffffff83a38d4b RDI: 000000000000002b [ 61.135922][ T5032] RBP: 1ffff9200073df09 R08: 0000000000000005 R09: 0000000000000000 [ 61.143968][ T5032] R10: 0000000000000001 R11: 0000000000000001 R12: dffffc0000000000 [ 61.151995][ T5032] R13: ffffffff8ab99700 R14: ffff888019f94000 R15: ffff8880783f06b8 [ 61.160024][ T5032] FS: 00005555558fa380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 61.169035][ T5032] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 61.175676][ T5032] CR2: 0000564e741eb538 CR3: 0000000074978000 CR4: 00000000003506f0 [ 61.183723][ T5032] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 61.191851][ T5032] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 61.199922][ T5032] Kernel panic - not syncing: Fatal exception [ 61.206288][ T5032] Kernel Offset: disabled [ 61.210624][ T5032] Rebooting in 86400 seconds..