./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2507214426 <...> Warning: Permanently added '10.128.0.25' (ED25519) to the list of known hosts. execve("./syz-executor2507214426", ["./syz-executor2507214426"], 0x7ffdae4ca1a0 /* 10 vars */) = 0 brk(NULL) = 0x555555b12000 brk(0x555555b12d00) = 0x555555b12d00 arch_prctl(ARCH_SET_FS, 0x555555b12380) = 0 set_tid_address(0x555555b12650) = 5057 set_robust_list(0x555555b12660, 24) = 0 rseq(0x555555b12ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2507214426", 4096) = 28 getrandom("\xbe\xcf\xe0\x36\x75\xad\xa3\x79", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555b12d00 brk(0x555555b33d00) = 0x555555b33d00 brk(0x555555b34000) = 0x555555b34000 mprotect(0x7fcabd414000, 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 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5058 attached [pid 5058] set_robust_list(0x555555b12660, 24) = 0 [pid 5058] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5057] <... clone resumed>, child_tidptr=0x555555b12650) = 5058 [pid 5058] <... prctl resumed>) = 0 [pid 5058] setpgid(0, 0) = 0 [pid 5058] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5058] write(3, "1000", 4) = 4 [pid 5058] close(3) = 0 [pid 5058] memfd_create("syzkaller", 0) = 3 [pid 5058] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fcab4e00000 [pid 5058] 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 [pid 5058] munmap(0x7fcab4e00000, 138412032) = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5058] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5058] close(3) = 0 [pid 5058] close(4) = 0 [pid 5058] mkdir("./file0", 0777) = 0 [ 78.824283][ T5058] loop0: detected capacity change from 0 to 32768 [ 78.858122][ T5058] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 78.866748][ T5058] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 78.890412][ T5058] gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents in 0ms [ 78.900584][ T23] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 78.907574][ T23] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [pid 5058] mount("/dev/loop0", "./file0", "gfs2", MS_RDONLY|MS_DIRSYNC, "") = 0 [pid 5058] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5058] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 78.987934][ T23] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 80ms [ 78.996192][ T23] gfs2: fsid=syz:syz.0: jid=0: Done [ 79.002260][ T5058] gfs2: fsid=syz:syz.0: first mount done, others may mount [pid 5058] mount(NULL, "./file0", NULL, MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_SLAVE, NULL) = 0 [pid 5058] exit_group(0) = ? [pid 5058] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5058, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=64 /* 0.64 s */} --- openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555b12650) = 5062 ./strace-static-x86_64: Process 5062 attached [pid 5062] set_robust_list(0x555555b12660, 24) = 0 [pid 5062] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5062] setpgid(0, 0) = 0 [pid 5062] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5062] write(3, "1000", 4) = 4 [pid 5062] close(3) = 0 [pid 5062] memfd_create("syzkaller", 0) = 3 [pid 5062] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fcab4e00000 [ 79.406934][ T5058] gfs2: fsid=syz:syz.0: found 2 quota changes [pid 5062] 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 [pid 5062] munmap(0x7fcab4e00000, 138412032) = 0 [pid 5062] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5062] close(3) = 0 [ 79.863724][ T5062] gfs2: fsid=syz:syz.0: original: gfs2_quota_sync+0x3cc/0x590 [ 79.871630][ T5062] gfs2: fsid=syz:syz.0: pid: 5062 [ 79.876657][ T5062] gfs2: fsid=syz:syz.0: lock type: 8 req lock state : 1 [ 79.883655][ T5062] gfs2: fsid=syz:syz.0: new: gfs2_quota_sync+0x3cc/0x590 [ 79.890794][ T5062] gfs2: fsid=syz:syz.0: pid: 5062 [ 79.895855][ T5062] gfs2: fsid=syz:syz.0: lock type: 8 req lock state : 1 [ 79.902871][ T5062] gfs2: fsid=syz:syz.0: G: s:EX n:8/1 f:qb t:EX d:EX/0 a:0 v:0 r:5 m:20 p:0 [ 79.911730][ T5062] gfs2: fsid=syz:syz.0: H: s:EX f:cH e:0 p:5062 [syz-executor250] gfs2_quota_sync+0x3cc/0x590 [ 79.922862][ T5062] ------------[ cut here ]------------ [ 79.928359][ T5062] kernel BUG at fs/gfs2/glock.c:1560! [ 79.933944][ T5062] invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI [ 79.940476][ T5062] CPU: 1 PID: 5062 Comm: syz-executor250 Not tainted 6.8.0-rc6-syzkaller #0 [ 79.949437][ T5062] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 [ 79.959669][ T5062] RIP: 0010:gfs2_glock_nq+0x174b/0x1ab0 [ 79.965341][ T5062] Code: fe 0f b7 0b 48 c7 c7 60 61 ed 8b 48 8b 74 24 20 44 89 f2 e8 27 73 8c 07 31 ff 48 8b 74 24 08 ba 01 00 00 00 e8 d6 61 ff ff 90 <0f> 0b 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 3e f8 ff ff 48 89 df e8 [ 79.985516][ T5062] RSP: 0018:ffffc900041c7938 EFLAGS: 00010246 [ 79.991594][ T5062] RAX: 33323f3bc9181400 RBX: ffff888024fdaf5a RCX: ffff888072e25940 [ 79.999572][ T5062] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 [ 80.007741][ T5062] RBP: 0000000000000000 R08: ffffffff83ce7fd7 R09: 1ffffffff1f0879d [ 80.015720][ T5062] R10: dffffc0000000000 R11: fffffbfff1f0879e R12: ffff888024fdaf22 [ 80.023694][ T5062] R13: 1ffff110049fb5e3 R14: 0000000000000008 R15: ffff888024fdaf18 [ 80.031668][ T5062] FS: 0000555555b12380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 [ 80.040604][ T5062] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 80.047191][ T5062] CR2: 00007fcab5dff000 CR3: 000000007ddbe000 CR4: 00000000003506f0 [ 80.055172][ T5062] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 80.063143][ T5062] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 80.071120][ T5062] Call Trace: [ 80.074587][ T5062] [ 80.077535][ T5062] ? __die_body+0x8b/0xe0 [ 80.081883][ T5062] ? die+0xcf/0x110 [ 80.085788][ T5062] ? do_trap+0x157/0x390 [ 80.090038][ T5062] ? gfs2_glock_nq+0x174b/0x1ab0 [ 80.094998][ T5062] ? do_error_trap+0x1dc/0x2c0 [ 80.099791][ T5062] ? gfs2_glock_nq+0x174b/0x1ab0 [ 80.104735][ T5062] ? __pfx_do_error_trap+0x10/0x10 [ 80.109856][ T5062] ? handle_invalid_op+0x34/0x40 [ 80.114795][ T5062] ? gfs2_glock_nq+0x174b/0x1ab0 [ 80.119750][ T5062] ? exc_invalid_op+0x38/0x50 [ 80.124448][ T5062] ? asm_exc_invalid_op+0x1a/0x20 [ 80.129482][ T5062] ? gfs2_dump_glock+0x17f7/0x1bb0 [ 80.134625][ T5062] ? gfs2_glock_nq+0x174b/0x1ab0 [ 80.139570][ T5062] ? gfs2_glock_nq+0x174a/0x1ab0 [ 80.144547][ T5062] do_sync+0x3cc/0xec0 [ 80.148618][ T5062] ? gfs2_quota_sync+0x3cc/0x590 [ 80.153567][ T5062] ? __pfx_do_sync+0x10/0x10 [ 80.158159][ T5062] ? do_raw_spin_lock+0x14e/0x370 [ 80.163188][ T5062] ? __pfx_lock_release+0x10/0x10 [ 80.168323][ T5062] ? do_raw_spin_unlock+0x13b/0x8b0 [ 80.173531][ T5062] gfs2_quota_sync+0x3cc/0x590 [ 80.178305][ T5062] gfs2_sync_fs+0x4d/0xc0 [ 80.182638][ T5062] sync_filesystem+0xed/0x230 [ 80.187316][ T5062] gfs2_reconfigure+0xbc/0xbb0 [ 80.192175][ T5062] ? hook_sb_remount+0x128/0x3c0 [ 80.197124][ T5062] reconfigure_super+0x445/0x880 [ 80.202067][ T5062] path_mount+0xc28/0xfa0 [ 80.206404][ T5062] __se_sys_mount+0x2d9/0x3c0 [ 80.211087][ T5062] ? __pfx___se_sys_mount+0x10/0x10 [ 80.216289][ T5062] ? do_syscall_64+0x108/0x240 [ 80.221075][ T5062] ? __x64_sys_mount+0x20/0xc0 [ 80.225845][ T5062] do_syscall_64+0xf9/0x240 [ 80.230360][ T5062] entry_SYSCALL_64_after_hwframe+0x6f/0x77 [ 80.236261][ T5062] RIP: 0033:0x7fcabd38d9e9 [ 80.240676][ T5062] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 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 [ 80.260283][ T5062] RSP: 002b:00007ffe20c9e708 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 80.268712][ T5062] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007fcabd38d9e9 [ 80.276797][ T5062] RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000000 [ 80.284791][ T5062] RBP: 0000000000013278 R08: 0000000000000000 R09: 0000555555b134c0 [ 80.292768][ T5062] R10: 00000000000800b0 R11: 0000000000000246 R12: 00007ffe20c9e730 [ 80.300744][ T5062] R13: 00007ffe20c9e71c R14: 431bde82d7b634db R15: 00007fcabd3d603b [ 80.308725][ T5062] [ 80.311745][ T5062] Modules linked in: [ 80.316049][ T5062] ---[ end trace 0000000000000000 ]--- [ 80.321566][ T5062] RIP: 0010:gfs2_glock_nq+0x174b/0x1ab0 [ 80.327175][ T5062] Code: fe 0f b7 0b 48 c7 c7 60 61 ed 8b 48 8b 74 24 20 44 89 f2 e8 27 73 8c 07 31 ff 48 8b 74 24 08 ba 01 00 00 00 e8 d6 61 ff ff 90 <0f> 0b 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 3e f8 ff ff 48 89 df e8 [ 80.347213][ T5062] RSP: 0018:ffffc900041c7938 EFLAGS: 00010246 [ 80.353361][ T5062] RAX: 33323f3bc9181400 RBX: ffff888024fdaf5a RCX: ffff888072e25940 [ 80.361583][ T5062] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 [ 80.369572][ T5062] RBP: 0000000000000000 R08: ffffffff83ce7fd7 R09: 1ffffffff1f0879d [ 80.377612][ T5062] R10: dffffc0000000000 R11: fffffbfff1f0879e R12: ffff888024fdaf22 [ 80.385725][ T5062] R13: 1ffff110049fb5e3 R14: 0000000000000008 R15: ffff888024fdaf18 [ 80.393917][ T5062] FS: 0000555555b12380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 [ 80.402897][ T5062] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 80.409621][ T5062] CR2: 00007fcab5dff000 CR3: 000000007ddbe000 CR4: 00000000003506f0 [ 80.417994][ T5062] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 80.426131][ T5062] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 80.434159][ T5062] Kernel panic - not syncing: Fatal exception [ 80.440437][ T5062] Kernel Offset: disabled [ 80.444789][ T5062] Rebooting in 86400 seconds..