./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3631744515 <...> DUID 00:04:f8:32:f0:25:6b:f7:7b:d6:d2:5e:34:7f:1d:07:e3:4e forked to background, child pid 4644 [ 30.848164][ T4645] 8021q: adding VLAN 0 to HW filter on device bond0 [ 30.864302][ T4645] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.50' (ECDSA) to the list of known hosts. execve("./syz-executor3631744515", ["./syz-executor3631744515"], 0x7fff7d197e50 /* 10 vars */) = 0 brk(NULL) = 0x555556459000 brk(0x555556459c40) = 0x555556459c40 arch_prctl(ARCH_SET_FS, 0x555556459300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3631744515", 4096) = 28 brk(0x55555647ac40) = 0x55555647ac40 brk(0x55555647b000) = 0x55555647b000 mprotect(0x7fd075d7c000, 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) = 0x7fd06d8b1000 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(0x7fd06d8b1000, 16777216) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 mkdir("./file0", 0777) = 0 syzkaller login: [ 51.313850][ T5069] loop0: detected capacity change from 0 to 32768 [ 51.326272][ T5069] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 51.334689][ T5069] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 51.346320][ T5069] gfs2: fsid=syz:syz.s: journal 0 mapped with 3 extents in 0ms [ 51.389147][ T5069] gfs2: fsid=syz:syz.s: first mount done, others may mount [ 51.397807][ T5069] gfs2: fsid=syz:syz.s: ri_addr = 18 [ 51.397807][ T5069] ri_length = 1 [ 51.397807][ T5069] ri_data0 = 19 [ 51.397807][ T5069] ri_data = 2060 [ 51.397807][ T5069] ri_bitbytes = 514 [ 51.397807][ T5069] start=0 len=514 offset=128 [ 51.421511][ T5069] gfs2: fsid=syz:syz.s: R: n:18 f:00 b:0/0 i:0 q:0 r:0 e:0 [ 51.428965][ T5069] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN [ 51.440659][ T5069] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 51.449050][ T5069] CPU: 0 PID: 5069 Comm: syz-executor363 Not tainted 6.1.0-syzkaller-14321-g0a924817d2ed #0 [ 51.459091][ T5069] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 51.469128][ T5069] RIP: 0010:gfs2_rgrp_dump+0x1bc/0x500 [ 51.474591][ T5069] Code: ca fd 49 8d 5e 68 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 52 7c 20 fe 48 8b 2b 48 8d 7d 04 48 89 f8 48 c1 e8 03 <42> 8a 04 28 84 c0 0f 85 d4 02 00 00 8b 4d 04 48 8d 7d 08 48 89 f8 [ 51.494180][ T5069] RSP: 0018:ffffc90003c6f3f8 EFLAGS: 00010247 [ 51.500231][ T5069] RAX: 0000000000000000 RBX: ffff8880777e2068 RCX: ffff888077eb1d40 [ 51.508188][ T5069] RDX: 0000000000000000 RSI: 0000000000004000 RDI: 0000000000000004 [ 51.516142][ T5069] RBP: 0000000000000000 R08: ffffffff83c10361 R09: fffff5200078de0d [ 51.524098][ T5069] R10: fffff5200078de0d R11: 1ffff9200078de0c R12: 0000000000000000 [ 51.532053][ T5069] R13: dffffc0000000000 R14: ffff8880777e2000 R15: ffffc90003c6f4a0 [ 51.540010][ T5069] FS: 0000555556459300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 51.548920][ T5069] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 51.555485][ T5069] CR2: 00007ffc34913000 CR3: 0000000072512000 CR4: 00000000003506f0 [ 51.563442][ T5069] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 51.571395][ T5069] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 51.579352][ T5069] Call Trace: [ 51.582618][ T5069] [ 51.585536][ T5069] gfs2_consist_rgrpd_i+0xd1/0x190 [ 51.590639][ T5069] ? gfs2_consist_inode_i+0x110/0x110 [ 51.595999][ T5069] ? fs_reclaim_acquire+0x70/0x120 [ 51.601099][ T5069] ? __might_sleep+0xc0/0xc0 [ 51.605677][ T5069] ? gfs2_lm+0x1eb/0x220 [ 51.609908][ T5069] ? gfs2_freeze_unlock+0x50/0x50 [ 51.614927][ T5069] ? rcu_read_lock_sched_held+0x87/0x110 [ 51.620563][ T5069] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 51.626543][ T5069] ? gfs2_ri_update+0x537/0x1730 [ 51.631483][ T5069] gfs2_ri_update+0xc5b/0x1730 [ 51.636250][ T5069] ? gfs2_glock_nq_init+0x60/0x60 [ 51.641258][ T5069] ? _raw_spin_unlock+0x24/0x40 [ 51.646099][ T5069] ? inode_go_held+0xe4/0x1f0 [ 51.650766][ T5069] ? gfs2_glock_wait+0x213/0x2a0 [ 51.655689][ T5069] gfs2_rindex_update+0x2f8/0x3a0 [ 51.660698][ T5069] ? gfs2_ri_total+0x2a0/0x2a0 [ 51.665447][ T5069] ? init_inodes+0x242/0x340 [ 51.670060][ T5069] ? complete_all+0x29/0x1e0 [ 51.674634][ T5069] init_inodes+0x242/0x340 [ 51.679049][ T5069] gfs2_fill_super+0x1bb2/0x2700 [ 51.683998][ T5069] ? gfs2_reconfigure+0xce0/0xce0 [ 51.689022][ T5069] ? ptr_to_hashval+0x70/0x70 [ 51.693691][ T5069] ? up_write+0x19a/0x580 [ 51.698015][ T5069] ? init_locking+0xbd/0x220 [ 51.702603][ T5069] ? vscnprintf+0x80/0x80 [ 51.706921][ T5069] ? set_blocksize+0x1ec/0x390 [ 51.711674][ T5069] ? sb_set_blocksize+0x95/0xf0 [ 51.716511][ T5069] get_tree_bdev+0x400/0x620 [ 51.721094][ T5069] ? gfs2_reconfigure+0xce0/0xce0 [ 51.726108][ T5069] gfs2_get_tree+0x50/0x210 [ 51.730597][ T5069] ? bpf_lsm_capable+0x5/0x10 [ 51.735262][ T5069] vfs_get_tree+0x88/0x270 [ 51.739749][ T5069] do_new_mount+0x289/0xad0 [ 51.744237][ T5069] ? do_move_mount_old+0x150/0x150 [ 51.749332][ T5069] ? user_path_at_empty+0x149/0x1a0 [ 51.754519][ T5069] __se_sys_mount+0x2d3/0x3c0 [ 51.759180][ T5069] ? __x64_sys_mount+0xc0/0xc0 [ 51.763928][ T5069] ? syscall_enter_from_user_mode+0x2e/0x1d0 [ 51.769890][ T5069] ? __x64_sys_mount+0x1c/0xc0 [ 51.774637][ T5069] do_syscall_64+0x3d/0xb0 [ 51.779076][ T5069] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 51.784958][ T5069] RIP: 0033:0x7fd075cfebda [ 51.789358][ T5069] 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 [ 51.808961][ T5069] RSP: 002b:00007ffc349122e8 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 51.817371][ T5069] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fd075cfebda [ 51.825334][ T5069] RDX: 00000000200124c0 RSI: 0000000020000000 RDI: 00007ffc34912300 [ 51.833350][ T5069] RBP: 00007ffc34912300 R08: 00007ffc34912340 R09: 0000000000012511 [ 51.841306][ T5069] R10: 0000000000000002 R11: 0000000000000282 R12: 0000000000000004 [ 51.849260][ T5069] R13: 00005555564592c0 R14: 0000000000000002 R15: 00007ffc34912340 [ 51.857222][ T5069] [ 51.860225][ T5069] Modules linked in: [ 51.864284][ T5069] ---[ end trace 0000000000000000 ]--- [ 51.869757][ T5069] RIP: 0010:gfs2_rgrp_dump+0x1bc/0x500 [ 51.875261][ T5069] Code: ca fd 49 8d 5e 68 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 52 7c 20 fe 48 8b 2b 48 8d 7d 04 48 89 f8 48 c1 e8 03 <42> 8a 04 28 84 c0 0f 85 d4 02 00 00 8b 4d 04 48 8d 7d 08 48 89 f8 [ 51.894911][ T5069] RSP: 0018:ffffc90003c6f3f8 EFLAGS: 00010247 [ 51.900989][ T5069] RAX: 0000000000000000 RBX: ffff8880777e2068 RCX: ffff888077eb1d40 [ 51.908994][ T5069] RDX: 0000000000000000 RSI: 0000000000004000 RDI: 0000000000000004 [ 51.917000][ T5069] RBP: 0000000000000000 R08: ffffffff83c10361 R09: fffff5200078de0d [ 51.925027][ T5069] R10: fffff5200078de0d R11: 1ffff9200078de0c R12: 0000000000000000 [ 51.933037][ T5069] R13: dffffc0000000000 R14: ffff8880777e2000 R15: ffffc90003c6f4a0 [ 51.941086][ T5069] FS: 0000555556459300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 51.950133][ T5069] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 51.956744][ T5069] CR2: 00007ffc34913000 CR3: 0000000072512000 CR4: 00000000003506f0 [ 51.964740][ T5069] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 51.972739][ T5069] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 51.980694][ T5069] Kernel panic - not syncing: Fatal exception [ 51.986953][ T5069] Kernel Offset: disabled [ 51.991273][ T5069] Rebooting in 86400 seconds..