./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2113696767 <...> Warning: Permanently added '10.128.1.66' (ECDSA) to the list of known hosts. execve("./syz-executor2113696767", ["./syz-executor2113696767"], 0x7ffcaab38c80 /* 10 vars */) = 0 brk(NULL) = 0x5555570db000 brk(0x5555570dbc40) = 0x5555570dbc40 arch_prctl(ARCH_SET_FS, 0x5555570db300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor2113696767", 4096) = 28 brk(0x5555570fcc40) = 0x5555570fcc40 brk(0x5555570fd000) = 0x5555570fd000 mprotect(0x7fd233996000, 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) = 0x7fd22b4cb000 syzkaller login: [ 55.673729][ T4992] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=4992 'syz-executor211' 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(0x7fd22b4cb000, 16777216) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 mkdir("./file0", 0777) = 0 [ 55.854535][ T4992] loop0: detected capacity change from 0 to 32768 [ 55.868212][ T4992] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 55.876614][ T4992] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 55.888795][ T4992] gfs2: fsid=syz:syz.s: journal 0 mapped with 3 extents in 0ms [ 55.933763][ T4992] gfs2: fsid=syz:syz.s: first mount done, others may mount [ 55.943936][ T4992] gfs2: fsid=syz:syz.s: ri_addr = 18 [ 55.943936][ T4992] ri_length = 1 [ 55.943936][ T4992] ri_data0 = 19 [ 55.943936][ T4992] ri_data = 2060 [ 55.943936][ T4992] ri_bitbytes = 514 [ 55.943936][ T4992] start=0 len=514 offset=128 [ 55.967616][ T4992] gfs2: fsid=syz:syz.s: R: n:18 f:00 b:0/0 i:0 q:0 r:0 e:0 [ 55.975089][ T4992] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN [ 55.986792][ T4992] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 55.995181][ T4992] CPU: 0 PID: 4992 Comm: syz-executor211 Not tainted 6.4.0-rc6-syzkaller-00037-gb6dad5178cea #0 [ 56.005564][ T4992] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 [ 56.015594][ T4992] RIP: 0010:gfs2_rgrp_dump+0x1be/0x500 [ 56.021050][ T4992] Code: cf fd 49 8d 5e 68 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 00 94 27 fe 48 8b 2b 48 8d 7d 04 48 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 d3 02 00 00 8b 4d 04 48 8d 7d 08 48 89 [ 56.040627][ T4992] RSP: 0018:ffffc90003a6f3d8 EFLAGS: 00010247 [ 56.046678][ T4992] RAX: 0000000000000000 RBX: ffff888077d4e068 RCX: ffff8880299c9dc0 [ 56.054635][ T4992] RDX: 0000000000000000 RSI: 0000000000004000 RDI: 0000000000000004 [ 56.062591][ T4992] RBP: 0000000000000000 R08: ffffffff83bbc303 R09: fffff5200074ddc9 [ 56.070545][ T4992] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 [ 56.078501][ T4992] R13: dffffc0000000000 R14: ffff888077d4e000 R15: ffffc90003a6f480 [ 56.086459][ T4992] FS: 00005555570db300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 56.095375][ T4992] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.101942][ T4992] CR2: 000055a59e88beb8 CR3: 0000000023831000 CR4: 00000000003506f0 [ 56.109901][ T4992] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 56.117854][ T4992] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 56.125809][ T4992] Call Trace: [ 56.129074][ T4992] [ 56.131992][ T4992] ? __die_body+0x5e/0xa0 [ 56.136308][ T4992] ? die_addr+0x99/0xc0 [ 56.140449][ T4992] ? exc_general_protection+0x3c2/0x5b0 [ 56.145986][ T4992] ? asm_exc_general_protection+0x26/0x30 [ 56.151693][ T4992] ? gfs2_rgrp_dump+0x183/0x500 [ 56.156531][ T4992] ? gfs2_rgrp_dump+0x1be/0x500 [ 56.161383][ T4992] ? gfs2_rgrp_dump+0x196/0x500 [ 56.166309][ T4992] gfs2_consist_rgrpd_i+0xe2/0x1a0 [ 56.171411][ T4992] ? gfs2_consist_inode_i+0x110/0x110 [ 56.176778][ T4992] ? rcu_is_watching+0x15/0xb0 [ 56.181534][ T4992] gfs2_ri_update+0xcc5/0x1810 [ 56.186303][ T4992] ? gfs2_glock_nq_init+0x60/0x60 [ 56.191314][ T4992] ? _raw_spin_unlock+0x28/0x40 [ 56.196163][ T4992] ? inode_go_held+0xea/0x200 [ 56.200825][ T4992] ? gfs2_glock_wait+0x21a/0x2b0 [ 56.205751][ T4992] gfs2_rindex_update+0x303/0x3c0 [ 56.210761][ T4992] ? gfs2_ri_total+0x2a0/0x2a0 [ 56.215510][ T4992] ? init_inodes+0x249/0x310 [ 56.220105][ T4992] ? complete_all+0x2d/0x1d0 [ 56.224795][ T4992] init_inodes+0x249/0x310 [ 56.229216][ T4992] gfs2_fill_super+0x1d02/0x2840 [ 56.234151][ T4992] ? gfs2_reconfigure+0xd00/0xd00 [ 56.239199][ T4992] ? ptr_to_hashval+0x80/0x80 [ 56.243879][ T4992] ? init_locking+0xbd/0x210 [ 56.248466][ T4992] ? sb_set_blocksize+0x99/0x100 [ 56.253416][ T4992] get_tree_bdev+0x405/0x620 [ 56.258008][ T4992] ? gfs2_reconfigure+0xd00/0xd00 [ 56.263033][ T4992] gfs2_get_tree+0x54/0x210 [ 56.267529][ T4992] ? bpf_lsm_capable+0x9/0x10 [ 56.272197][ T4992] vfs_get_tree+0x8c/0x270 [ 56.276605][ T4992] do_new_mount+0x28f/0xae0 [ 56.281099][ T4992] ? path_mount+0x5f2/0xf80 [ 56.285714][ T4992] ? do_move_mount_old+0x170/0x170 [ 56.290816][ T4992] ? user_path_at_empty+0x12f/0x180 [ 56.296009][ T4992] __se_sys_mount+0x2d9/0x3c0 [ 56.300672][ T4992] ? __x64_sys_mount+0xc0/0xc0 [ 56.305426][ T4992] ? syscall_enter_from_user_mode+0x32/0x230 [ 56.311394][ T4992] ? __x64_sys_mount+0x20/0xc0 [ 56.316146][ T4992] do_syscall_64+0x41/0xc0 [ 56.320545][ T4992] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 56.326424][ T4992] RIP: 0033:0x7fd233918bfa [ 56.330826][ T4992] Code: 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 56.350477][ T4992] RSP: 002b:00007ffe1bed1868 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 56.358888][ T4992] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fd233918bfa [ 56.366850][ T4992] RDX: 00000000200124c0 RSI: 0000000020000000 RDI: 00007ffe1bed1880 [ 56.374807][ T4992] RBP: 00007ffe1bed1880 R08: 00007ffe1bed18c0 R09: 0000000000012511 [ 56.382764][ T4992] R10: 0000000000000002 R11: 0000000000000282 R12: 0000000000000004 [ 56.390718][ T4992] R13: 00005555570db2c0 R14: 0000000000000002 R15: 00007ffe1bed18c0 [ 56.398681][ T4992] [ 56.401684][ T4992] Modules linked in: [ 56.405936][ T4992] ---[ end trace 0000000000000000 ]--- [ 56.411415][ T4992] RIP: 0010:gfs2_rgrp_dump+0x1be/0x500 [ 56.416945][ T4992] Code: cf fd 49 8d 5e 68 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 00 94 27 fe 48 8b 2b 48 8d 7d 04 48 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 d3 02 00 00 8b 4d 04 48 8d 7d 08 48 89 [ 56.436598][ T4992] RSP: 0018:ffffc90003a6f3d8 EFLAGS: 00010247 [ 56.442663][ T4992] RAX: 0000000000000000 RBX: ffff888077d4e068 RCX: ffff8880299c9dc0 [ 56.450646][ T4992] RDX: 0000000000000000 RSI: 0000000000004000 RDI: 0000000000000004 [ 56.458650][ T4992] RBP: 0000000000000000 R08: ffffffff83bbc303 R09: fffff5200074ddc9 [ 56.466646][ T4992] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 [ 56.474672][ T4992] R13: dffffc0000000000 R14: ffff888077d4e000 R15: ffffc90003a6f480 [ 56.482646][ T4992] FS: 00005555570db300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 56.491608][ T4992] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.498221][ T4992] CR2: 000055a59e88beb8 CR3: 0000000023831000 CR4: 00000000003506f0 [ 56.506217][ T4992] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 56.514185][ T4992] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 56.522173][ T4992] Kernel panic - not syncing: Fatal exception [ 56.528388][ T4992] Kernel Offset: disabled [ 56.532699][ T4992] Rebooting in 86400 seconds..