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: 5481 Comm: syz-executor.0 Not tainted 6.7.0-rc5-syzkaller-00214-gc8e97fc6b4c0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 RIP: 0010:gfs2_rindex_update+0xbc/0x3c0 fs/gfs2/rgrp.c:1037 Code: e8 b9 53 22 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 86 53 22 fe 48 8b 03 48 89 44 24 20 RSP: 0018:ffffc900056271e0 EFLAGS: 00010202 RAX: 0000000000000097 RBX: 00000000000004b8 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88807e7a0000 RBP: ffffc900056272f0 R08: ffffffff83bed5b7 R09: 1ffff1100d4d3d5c R10: dffffc0000000000 R11: ffffed100d4d3d5d R12: 1ffff92000ac4e44 R13: ffff88807e7a0000 R14: ffffc90005627240 R15: 0000000000000001 FS: 00007f04be6266c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe262558fe4 CR3: 000000001cebc000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: punch_hole+0xe7b/0x3a30 fs/gfs2/bmap.c:1809 gfs2_truncatei_resume+0x3c/0x70 fs/gfs2/bmap.c:2159 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:237 [inline] init_statfs fs/gfs2/ops_fstype.c:694 [inline] init_journal+0x167c/0x23f0 fs/gfs2/ops_fstype.c:816 init_inodes+0xdc/0x310 fs/gfs2/ops_fstype.c:884 gfs2_fill_super+0x1ebe/0x26b0 fs/gfs2/ops_fstype.c:1263 get_tree_bdev+0x416/0x5b0 fs/super.c:1598 gfs2_get_tree+0x54/0x210 fs/gfs2/ops_fstype.c:1341 vfs_get_tree+0x8c/0x2a0 fs/super.c:1771 do_new_mount+0x28f/0xae0 fs/namespace.c:3337 do_mount fs/namespace.c:3677 [inline] __do_sys_mount fs/namespace.c:3886 [inline] __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3863 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f04bd87e09a Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f04be625ee8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f04be625f80 RCX: 00007f04bd87e09a RDX: 00000000200124c0 RSI: 0000000020000040 RDI: 00007f04be625f40 RBP: 00000000200124c0 R08: 00007f04be625f80 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000040 R13: 00007f04be625f40 R14: 0000000000012551 R15: 0000000020000080 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:gfs2_rindex_update+0xbc/0x3c0 fs/gfs2/rgrp.c:1037 Code: e8 b9 53 22 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 86 53 22 fe 48 8b 03 48 89 44 24 20 RSP: 0018:ffffc900056271e0 EFLAGS: 00010202 RAX: 0000000000000097 RBX: 00000000000004b8 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88807e7a0000 RBP: ffffc900056272f0 R08: ffffffff83bed5b7 R09: 1ffff1100d4d3d5c R10: dffffc0000000000 R11: ffffed100d4d3d5d R12: 1ffff92000ac4e44 R13: ffff88807e7a0000 R14: ffffc90005627240 R15: 0000000000000001 FS: 00007f04be6266c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe262558fe4 CR3: 000000001cebc000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: e8 b9 53 22 fe call 0xfe2253be 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 86 53 22 fe call 0xfe2253be 38: 48 8b 03 mov (%rbx),%rax 3b: 48 89 44 24 20 mov %rax,0x20(%rsp)