loop0: detected capacity change from 0 to 32768 gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" gfs2: fsid=syz:syz: Now mounting FS (format 1801)... gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms general protection fault, probably for non-canonical address 0xdffffc0000000097: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x00000000000004b8-0x00000000000004bf] CPU: 0 PID: 4991 Comm: syz-executor231 Not tainted 6.4.0-rc6-syzkaller-00037-gb6dad5178cea #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 RIP: 0010:gfs2_rindex_update+0xbc/0x3c0 fs/gfs2/rgrp.c:1037 Code: e8 39 24 28 fe 4c 8d 74 24 60 48 8b 03 48 89 44 24 38 48 8d 98 b8 04 00 00 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 06 24 28 fe 48 8b 03 48 89 44 24 20 RSP: 0018:ffffc9000399f1e0 EFLAGS: 00010202 RAX: 0000000000000097 RBX: 00000000000004b8 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88807cd28000 RBP: ffffc9000399f2f0 R08: ffffffff83b1dee4 R09: ffffed100e94a001 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000733e44 R13: ffff88807cd28000 R14: ffffc9000399f240 R15: 1ffff92000733ea0 FS: 0000555556d61300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000001ade398 CR3: 0000000027634000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: punch_hole+0xe78/0x3a60 fs/gfs2/bmap.c:1807 gfs2_truncatei_resume+0x3c/0x70 fs/gfs2/bmap.c:2157 gfs2_glock_holder_ready fs/gfs2/glock.c:1319 [inline] gfs2_glock_wait+0x1df/0x2b0 fs/gfs2/glock.c:1339 gfs2_glock_nq_init fs/gfs2/glock.h:261 [inline] init_statfs fs/gfs2/ops_fstype.c:696 [inline] init_journal+0x167c/0x23e0 fs/gfs2/ops_fstype.c:818 init_inodes+0xdc/0x310 fs/gfs2/ops_fstype.c:886 gfs2_fill_super+0x1d02/0x2840 fs/gfs2/ops_fstype.c:1250 get_tree_bdev+0x405/0x620 fs/super.c:1303 gfs2_get_tree+0x54/0x210 fs/gfs2/ops_fstype.c:1335 vfs_get_tree+0x8c/0x270 fs/super.c:1510 do_new_mount+0x28f/0xae0 fs/namespace.c:3039 do_mount fs/namespace.c:3382 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3568 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f88035c0b1a 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 RSP: 002b:00007ffd93026fa8 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f88035c0b1a RDX: 00000000200124c0 RSI: 0000000020000040 RDI: 00007ffd93026fc0 RBP: 00007ffd93026fc0 R08: 00007ffd93027000 R09: 000000000001254b R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000004 R13: 0000555556d612c0 R14: 0000000000000000 R15: 00007ffd93027000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:gfs2_rindex_update+0xbc/0x3c0 fs/gfs2/rgrp.c:1037 Code: e8 39 24 28 fe 4c 8d 74 24 60 48 8b 03 48 89 44 24 38 48 8d 98 b8 04 00 00 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 06 24 28 fe 48 8b 03 48 89 44 24 20 RSP: 0018:ffffc9000399f1e0 EFLAGS: 00010202 RAX: 0000000000000097 RBX: 00000000000004b8 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88807cd28000 RBP: ffffc9000399f2f0 R08: ffffffff83b1dee4 R09: ffffed100e94a001 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000733e44 R13: ffff88807cd28000 R14: ffffc9000399f240 R15: 1ffff92000733ea0 FS: 0000555556d61300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000001ade398 CR3: 0000000027634000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: e8 39 24 28 fe callq 0xfe28243e 5: 4c 8d 74 24 60 lea 0x60(%rsp),%r14 a: 48 8b 03 mov (%rbx),%rax d: 48 89 44 24 38 mov %rax,0x38(%rsp) 12: 48 8d 98 b8 04 00 00 lea 0x4b8(%rax),%rbx 19: 48 89 d8 mov %rbx,%rax 1c: 48 c1 e8 03 shr $0x3,%rax 20: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 27: fc ff df * 2a: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) <-- trapping instruction 2e: 74 08 je 0x38 30: 48 89 df mov %rbx,%rdi 33: e8 06 24 28 fe callq 0xfe28243e 38: 48 8b 03 mov (%rbx),%rax 3b: 48 89 44 24 20 mov %rax,0x20(%rsp)