./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4215456096 <...> Warning: Permanently added '10.128.1.146' (ECDSA) to the list of known hosts. execve("./syz-executor4215456096", ["./syz-executor4215456096"], 0x7ffc7c444b70 /* 10 vars */) = 0 brk(NULL) = 0x55555717d000 brk(0x55555717dc40) = 0x55555717dc40 arch_prctl(ARCH_SET_FS, 0x55555717d300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor4215456096", 4096) = 28 brk(0x55555719ec40) = 0x55555719ec40 brk(0x55555719f000) = 0x55555719f000 mprotect(0x7f807346a000, 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) = 0x7f806af9f000 syzkaller login: [ 63.970174][ T4991] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=4991 'syz-executor421' 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(0x7f806af9f000, 16777216) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 mkdir("./file0", 0777) = 0 [ 64.180071][ T4991] loop0: detected capacity change from 0 to 32768 [ 64.193976][ T4991] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 64.202436][ T4991] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 64.215385][ T4991] gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms [ 64.224550][ T2060] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 64.231634][ T2060] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... mount("/dev/loop0", "./file0", "gfs2", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_REC|MS_RELATIME, "") = 0 openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 chdir("./file0") = 0 ioctl(4, LOOP_CLR_FD) = 0 close(4) = 0 open(".", O_RDONLY) = 4 [ 64.273336][ T2060] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 41ms [ 64.283701][ T2060] gfs2: fsid=syz:syz.0: jid=0: Done [ 64.289428][ T4991] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 64.309528][ T4991] ------------[ cut here ]------------ [ 64.315040][ T4991] WARNING: CPU: 1 PID: 4991 at fs/gfs2/rgrp.c:2628 gfs2_check_blk_type+0x449/0x670 [ 64.324653][ T4991] Modules linked in: [ 64.328639][ T4991] CPU: 1 PID: 4991 Comm: syz-executor421 Not tainted 6.4.0-rc3-syzkaller-00008-gae8373a5add4 #0 [ 64.339249][ T4991] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023 [ 64.349362][ T4991] RIP: 0010:gfs2_check_blk_type+0x449/0x670 [ 64.355279][ T4991] Code: 85 d2 01 00 00 8b 1b 89 df 44 89 f6 e8 70 7b cf fd 4c 89 74 24 10 44 39 f3 76 21 e8 e1 79 cf fd 45 31 ed eb 6e e8 d7 79 cf fd <0f> 0b 41 bf f9 ff ff ff 48 8b 5c 24 18 e9 46 01 00 00 e8 c0 79 cf [ 64.374967][ T4991] RSP: 0018:ffffc9000398f8c0 EFLAGS: 00010293 [ 64.381128][ T4991] RAX: ffffffff83bc0218 RBX: ffff88807cbec028 RCX: ffff888021570000 [ 64.389166][ T4991] RDX: 0000000000000000 RSI: 0000000000000012 RDI: 0000000000000013 [ 64.397172][ T4991] RBP: ffffc9000398f9d0 R08: ffffffff83bc020e R09: ffffed100ec36579 [ 64.405225][ T4991] R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1100f97d806 [ 64.413253][ T4991] R13: ffff88807cbec000 R14: 0000000000000012 R15: 0000000000000013 [ 64.421288][ T4991] FS: 000055555717d300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 64.430275][ T4991] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 64.436865][ T4991] CR2: 00005593d4247008 CR3: 0000000073740000 CR4: 00000000003506e0 [ 64.444890][ T4991] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 64.452978][ T4991] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 64.461008][ T4991] Call Trace: [ 64.464303][ T4991] [ 64.467236][ T4991] ? gfs2_free_di+0x3c0/0x3c0 [ 64.472067][ T4991] ? gfs2_inode_lookup+0xb01/0xc50 [ 64.477216][ T4991] ? gfs2_glock_wait+0x213/0x2b0 [ 64.482219][ T4991] gfs2_inode_lookup+0xb01/0xc50 [ 64.487196][ T4991] ? gfs2_lookup_by_inum+0x51/0xf0 [ 64.492366][ T4991] ? set_meta_super+0x10/0x10 [ 64.497078][ T4991] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 64.503030][ T4991] ? gfs2_lookup_by_inum+0x51/0xf0 [ 64.508238][ T4991] gfs2_lookup_by_inum+0x51/0xf0 [ 64.513203][ T4991] gfs2_fh_to_dentry+0x135/0x200 [ 64.518200][ T4991] ? do_handle_open+0x960/0x960 [ 64.523114][ T4991] exportfs_decode_fh_raw+0x144/0x590 [ 64.528603][ T4991] ? do_handle_open+0x960/0x960 [ 64.533485][ T4991] ? exportfs_encode_fh+0x430/0x430 [ 64.538808][ T4991] ? do_handle_open+0x960/0x960 [ 64.543683][ T4991] exportfs_decode_fh+0x3c/0x70 [ 64.548594][ T4991] do_handle_open+0x450/0x960 [ 64.553328][ T4991] ? __x64_compat_sys_open_by_handle_at+0x80/0x80 [ 64.559801][ T4991] ? syscall_enter_from_user_mode+0x32/0x230 [ 64.565825][ T4991] ? syscall_enter_from_user_mode+0x8c/0x230 [ 64.571885][ T4991] do_syscall_64+0x41/0xc0 [ 64.576378][ T4991] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 64.582325][ T4991] RIP: 0033:0x7f80733eb7b9 [ 64.586778][ T4991] 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 [ 64.606436][ T4991] RSP: 002b:00007ffd20a75c48 EFLAGS: 00000246 ORIG_RAX: 0000000000000130 [ 64.614928][ T4991] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f80733eb7b9 [ 64.622969][ T4991] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000004 [ 64.630999][ T4991] RBP: 00007f80733ab050 R08: 0000000000000000 R09: 0000000000000000 [ 64.639070][ T4991] R10: 00000000000124d6 R11: 0000000000000246 R12: 00007f80733ab0e0 [ 64.647069][ T4991] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 64.655133][ T4991] [ 64.658204][ T4991] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 64.665491][ T4991] CPU: 1 PID: 4991 Comm: syz-executor421 Not tainted 6.4.0-rc3-syzkaller-00008-gae8373a5add4 #0 [ 64.675904][ T4991] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023 [ 64.685955][ T4991] Call Trace: [ 64.689240][ T4991] [ 64.692172][ T4991] dump_stack_lvl+0x1e7/0x2d0 [ 64.696883][ T4991] ? nf_tcp_handle_invalid+0x650/0x650 [ 64.702350][ T4991] ? panic+0x770/0x770 [ 64.706426][ T4991] ? vscnprintf+0x5d/0x80 [ 64.710764][ T4991] panic+0x30f/0x770 [ 64.714663][ T4991] ? __warn+0x171/0x4a0 [ 64.718822][ T4991] ? __memcpy_flushcache+0x2b0/0x2b0 [ 64.724114][ T4991] __warn+0x314/0x4a0 [ 64.728097][ T4991] ? gfs2_check_blk_type+0x449/0x670 [ 64.733400][ T4991] report_bug+0x2b3/0x500 [ 64.737726][ T4991] ? gfs2_check_blk_type+0x449/0x670 [ 64.743021][ T4991] handle_bug+0x3d/0x70 [ 64.747180][ T4991] exc_invalid_op+0x1a/0x50 [ 64.751725][ T4991] asm_exc_invalid_op+0x1a/0x20 [ 64.756576][ T4991] RIP: 0010:gfs2_check_blk_type+0x449/0x670 [ 64.762473][ T4991] Code: 85 d2 01 00 00 8b 1b 89 df 44 89 f6 e8 70 7b cf fd 4c 89 74 24 10 44 39 f3 76 21 e8 e1 79 cf fd 45 31 ed eb 6e e8 d7 79 cf fd <0f> 0b 41 bf f9 ff ff ff 48 8b 5c 24 18 e9 46 01 00 00 e8 c0 79 cf [ 64.782085][ T4991] RSP: 0018:ffffc9000398f8c0 EFLAGS: 00010293 [ 64.788169][ T4991] RAX: ffffffff83bc0218 RBX: ffff88807cbec028 RCX: ffff888021570000 [ 64.796176][ T4991] RDX: 0000000000000000 RSI: 0000000000000012 RDI: 0000000000000013 [ 64.804148][ T4991] RBP: ffffc9000398f9d0 R08: ffffffff83bc020e R09: ffffed100ec36579 [ 64.812128][ T4991] R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1100f97d806 [ 64.820116][ T4991] R13: ffff88807cbec000 R14: 0000000000000012 R15: 0000000000000013 [ 64.828096][ T4991] ? gfs2_check_blk_type+0x38e/0x670 [ 64.833390][ T4991] ? gfs2_check_blk_type+0x398/0x670 [ 64.838717][ T4991] ? gfs2_free_di+0x3c0/0x3c0 [ 64.843514][ T4991] ? gfs2_inode_lookup+0xb01/0xc50 [ 64.848646][ T4991] ? gfs2_glock_wait+0x213/0x2b0 [ 64.853622][ T4991] gfs2_inode_lookup+0xb01/0xc50 [ 64.858583][ T4991] ? gfs2_lookup_by_inum+0x51/0xf0 [ 64.863712][ T4991] ? set_meta_super+0x10/0x10 [ 64.868404][ T4991] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 64.874308][ T4991] ? gfs2_lookup_by_inum+0x51/0xf0 [ 64.879437][ T4991] gfs2_lookup_by_inum+0x51/0xf0 [ 64.884401][ T4991] gfs2_fh_to_dentry+0x135/0x200 [ 64.889358][ T4991] ? do_handle_open+0x960/0x960 [ 64.894221][ T4991] exportfs_decode_fh_raw+0x144/0x590 [ 64.899610][ T4991] ? do_handle_open+0x960/0x960 [ 64.904474][ T4991] ? exportfs_encode_fh+0x430/0x430 [ 64.909732][ T4991] ? do_handle_open+0x960/0x960 [ 64.914595][ T4991] exportfs_decode_fh+0x3c/0x70 [ 64.919468][ T4991] do_handle_open+0x450/0x960 [ 64.924185][ T4991] ? __x64_compat_sys_open_by_handle_at+0x80/0x80 [ 64.930613][ T4991] ? syscall_enter_from_user_mode+0x32/0x230 [ 64.936605][ T4991] ? syscall_enter_from_user_mode+0x8c/0x230 [ 64.942598][ T4991] do_syscall_64+0x41/0xc0 [ 64.947134][ T4991] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 64.953042][ T4991] RIP: 0033:0x7f80733eb7b9 [ 64.957465][ T4991] 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 [ 64.977080][ T4991] RSP: 002b:00007ffd20a75c48 EFLAGS: 00000246 ORIG_RAX: 0000000000000130 [ 64.985505][ T4991] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f80733eb7b9 [ 64.993499][ T4991] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000004 [ 65.001507][ T4991] RBP: 00007f80733ab050 R08: 0000000000000000 R09: 0000000000000000 [ 65.009484][ T4991] R10: 00000000000124d6 R11: 0000000000000246 R12: 00007f80733ab0e0 [ 65.017489][ T4991] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 65.025505][ T4991] [ 65.028773][ T4991] Kernel Offset: disabled [ 65.033181][ T4991] Rebooting in 86400 seconds..