./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor469605039 <...> Warning: Permanently added '10.128.1.5' (ED25519) to the list of known hosts. execve("./syz-executor469605039", ["./syz-executor469605039"], 0x7ffe325c2510 /* 10 vars */) = 0 brk(NULL) = 0x55557ea86000 brk(0x55557ea86d00) = 0x55557ea86d00 arch_prctl(ARCH_SET_FS, 0x55557ea86380) = 0 set_tid_address(0x55557ea86650) = 5788 set_robust_list(0x55557ea86660, 24) = 0 rseq(0x55557ea86ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor469605039", 4096) = 27 getrandom("\xa9\x32\xb4\x81\xc0\x97\xe2\x2f", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557ea86d00 brk(0x55557eaa7d00) = 0x55557eaa7d00 brk(0x55557eaa8000) = 0x55557eaa8000 mprotect(0x7f365bffb000, 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, child_tidptr=0x55557ea86650) = 5789 ./strace-static-x86_64: Process 5789 attached [pid 5789] set_robust_list(0x55557ea86660, 24) = 0 [pid 5789] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5789] setpgid(0, 0) = 0 [pid 5789] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5789] write(3, "1000", 4) = 4 [pid 5789] close(3executing program ) = 0 [pid 5789] write(1, "executing program\n", 18) = 18 [pid 5789] memfd_create("syzkaller", 0) = 3 [pid 5789] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3653a00000 [pid 5789] 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 5789] munmap(0x7f3653a00000, 138412032) = 0 [pid 5789] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5789] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5789] close(3) = 0 [pid 5789] close(4) = 0 [pid 5789] mkdir("./file0", 0777) = 0 [ 205.572936][ T5789] loop0: detected capacity change from 0 to 32768 [ 205.613954][ T5789] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 205.622559][ T5789] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 205.646072][ T5789] gfs2: fsid=syz:syz.0: journal 0 mapped with 7 extents in 0ms [ 205.660236][ T10] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 205.667280][ T10] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 205.762891][ T10] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 95ms [ 205.771284][ T10] gfs2: fsid=syz:syz.0: jid=0: Done [ 205.776803][ T5789] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 205.988008][ T5789] syz-executor469: attempt to access beyond end of device [ 205.988008][ T5789] loop0: rw=12288, sector=2251799813685248, nr_sectors = 8 limit=32768 [ 206.003667][ T5789] ===================================================== [ 206.011105][ T5789] BUG: KMSAN: uninit-value in gfs2_quota_init+0x22c4/0x2950 [ 206.018807][ T5789] gfs2_quota_init+0x22c4/0x2950 [ 206.023941][ T5789] gfs2_make_fs_rw+0x4cf/0x6a0 [ 206.029059][ T5789] gfs2_fill_super+0x43f5/0x45a0 [ 206.034188][ T5789] get_tree_bdev_flags+0x6ec/0x910 [ 206.039623][ T5789] get_tree_bdev+0x37/0x50 [ 206.044249][ T5789] gfs2_get_tree+0x5c/0x340 [ 206.049018][ T5789] vfs_get_tree+0xb1/0x5a0 [ 206.053646][ T5789] do_new_mount+0x71f/0x15e0 [ 206.058406][ T5789] path_mount+0x742/0x1f10 [ 206.063310][ T5789] __se_sys_mount+0x722/0x810 [ 206.068137][ T5789] __x64_sys_mount+0xe4/0x150 [ 206.073159][ T5789] x64_sys_call+0x39bf/0x3c30 [ 206.078060][ T5789] do_syscall_64+0xcd/0x1e0 [ 206.082906][ T5789] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 206.089130][ T5789] [ 206.091512][ T5789] Uninit was created at: [ 206.095952][ T5789] __alloc_pages_noprof+0x9a7/0xe00 [ 206.101498][ T5789] alloc_pages_mpol_noprof+0x299/0x990 [ 206.107167][ T5789] folio_alloc_noprof+0x1db/0x310 [ 206.112494][ T5789] filemap_alloc_folio_noprof+0xa6/0x440 [ 206.118334][ T5789] __filemap_get_folio+0xac4/0x1550 [ 206.123892][ T5789] gfs2_getbuf+0x23f/0xcd0 [ 206.128522][ T5789] gfs2_meta_ra+0x17f/0x7b0 [ 206.133368][ T5789] gfs2_quota_init+0x78d/0x2950 [ 206.138371][ T5789] gfs2_make_fs_rw+0x4cf/0x6a0 [ 206.143489][ T5789] gfs2_fill_super+0x43f5/0x45a0 [ 206.148774][ T5789] get_tree_bdev_flags+0x6ec/0x910 [ 206.154036][ T5789] get_tree_bdev+0x37/0x50 [ 206.158876][ T5789] gfs2_get_tree+0x5c/0x340 [ 206.163561][ T5789] vfs_get_tree+0xb1/0x5a0 [ 206.168157][ T5789] do_new_mount+0x71f/0x15e0 [ 206.173149][ T5789] path_mount+0x742/0x1f10 [ 206.177778][ T5789] __se_sys_mount+0x722/0x810 [ 206.182871][ T5789] __x64_sys_mount+0xe4/0x150 [ 206.187786][ T5789] x64_sys_call+0x39bf/0x3c30 [ 206.192869][ T5789] do_syscall_64+0xcd/0x1e0 [ 206.197587][ T5789] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 206.203861][ T5789] [ 206.206309][ T5789] CPU: 1 UID: 0 PID: 5789 Comm: syz-executor469 Not tainted 6.12.0-syzkaller-09073-g9f16d5e6f220 #0 [ 206.217459][ T5789] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 206.227821][ T5789] ===================================================== [ 206.234957][ T5789] Disabling lock debugging due to kernel taint [ 206.241484][ T5789] Kernel panic - not syncing: kmsan.panic set ... [ 206.248040][ T5789] CPU: 1 UID: 0 PID: 5789 Comm: syz-executor469 Tainted: G B 6.12.0-syzkaller-09073-g9f16d5e6f220 #0 [ 206.260471][ T5789] Tainted: [B]=BAD_PAGE [ 206.264748][ T5789] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 206.274960][ T5789] Call Trace: [ 206.278370][ T5789] [ 206.281379][ T5789] dump_stack_lvl+0x216/0x2d0 [ 206.286221][ T5789] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 206.292230][ T5789] dump_stack+0x1e/0x30 [ 206.296575][ T5789] panic+0x4e2/0xcf0 [ 206.300635][ T5789] ? kmsan_get_metadata+0x81/0x1c0 [ 206.305919][ T5789] kmsan_report+0x2c7/0x2d0 [ 206.310707][ T5789] ? __msan_warning+0x95/0x120 [ 206.315696][ T5789] ? gfs2_quota_init+0x22c4/0x2950 [ 206.320965][ T5789] ? gfs2_make_fs_rw+0x4cf/0x6a0 [ 206.326054][ T5789] ? gfs2_fill_super+0x43f5/0x45a0 [ 206.331303][ T5789] ? get_tree_bdev_flags+0x6ec/0x910 [ 206.336743][ T5789] ? get_tree_bdev+0x37/0x50 [ 206.341844][ T5789] ? gfs2_get_tree+0x5c/0x340 [ 206.346676][ T5789] ? vfs_get_tree+0xb1/0x5a0 [ 206.351469][ T5789] ? do_new_mount+0x71f/0x15e0 [ 206.356540][ T5789] ? path_mount+0x742/0x1f10 [ 206.361334][ T5789] ? __se_sys_mount+0x722/0x810 [ 206.366347][ T5789] ? __x64_sys_mount+0xe4/0x150 [ 206.371363][ T5789] ? x64_sys_call+0x39bf/0x3c30 [ 206.376416][ T5789] ? do_syscall_64+0xcd/0x1e0 [ 206.381288][ T5789] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 206.387607][ T5789] ? submit_bio+0x58a/0x5b0 [ 206.392288][ T5789] ? submit_bh_wbc+0x82b/0x8a0 [ 206.397295][ T5789] ? kmsan_get_metadata+0x13e/0x1c0 [ 206.402674][ T5789] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 206.408689][ T5789] ? kmsan_get_metadata+0x13e/0x1c0 [ 206.414049][ T5789] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 206.420073][ T5789] __msan_warning+0x95/0x120 [ 206.424806][ T5789] gfs2_quota_init+0x22c4/0x2950 [ 206.429951][ T5789] gfs2_make_fs_rw+0x4cf/0x6a0 [ 206.434879][ T5789] gfs2_fill_super+0x43f5/0x45a0 [ 206.440035][ T5789] ? sb_set_blocksize+0x12a/0x160 [ 206.445249][ T5789] ? setup_bdev_super+0xa2c/0xa90 [ 206.450453][ T5789] ? init_locking+0xf0/0x510 [ 206.455234][ T5789] get_tree_bdev_flags+0x6ec/0x910 [ 206.460520][ T5789] ? __pfx_gfs2_fill_super+0x10/0x10 [ 206.465964][ T5789] ? __pfx_gfs2_fill_super+0x10/0x10 [ 206.471380][ T5789] get_tree_bdev+0x37/0x50 [ 206.475948][ T5789] gfs2_get_tree+0x5c/0x340 [ 206.480612][ T5789] ? __pfx_gfs2_get_tree+0x10/0x10 [ 206.485897][ T5789] vfs_get_tree+0xb1/0x5a0 [ 206.490537][ T5789] ? mount_capable+0x97/0x120 [ 206.495338][ T5789] do_new_mount+0x71f/0x15e0 [ 206.500083][ T5789] ? kmsan_get_metadata+0x13e/0x1c0 [ 206.505453][ T5789] path_mount+0x742/0x1f10 [ 206.510041][ T5789] ? user_path_at+0x374/0x3e0 [ 206.514853][ T5789] __se_sys_mount+0x722/0x810 [ 206.519677][ T5789] ? ptrace_notify+0x263/0x320 [ 206.524633][ T5789] __x64_sys_mount+0xe4/0x150 [ 206.529474][ T5789] x64_sys_call+0x39bf/0x3c30 [ 206.534298][ T5789] do_syscall_64+0xcd/0x1e0 [ 206.538965][ T5789] ? clear_bhb_loop+0x25/0x80 [ 206.543816][ T5789] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 206.549938][ T5789] RIP: 0033:0x7f365bf76daa [ 206.554485][ T5789] 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 [ 206.574302][ T5789] RSP: 002b:00007ffc56574bf8 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 206.582853][ T5789] RAX: ffffffffffffffda RBX: 00007ffc56574c10 RCX: 00007f365bf76daa [ 206.590960][ T5789] RDX: 0000000020000080 RSI: 00000000200000c0 RDI: 00007ffc56574c10 [ 206.599068][ T5789] RBP: 0000000000000004 R08: 00007ffc56574c50 R09: 000000000001254b [ 206.607182][ T5789] R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000000 [ 206.615257][ T5789] R13: 00007ffc56574c50 R14: 0000000000000003 R15: 0000000001000000 [ 206.623350][ T5789] [ 206.626819][ T5789] Kernel Offset: disabled [ 206.631232][ T5789] Rebooting in 86400 seconds..