gfs2: fsid=syz:syz.0: first mount done, others may mount general protection fault, probably for non-canonical address 0xdffffc0000000011: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000088-0x000000000000008f] CPU: 1 PID: 10573 Comm: syz-executor.0 Not tainted 5.19.0-rc3-syzkaller-00038-gca1fdab7fd27 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:evict_linked_inode fs/gfs2/super.c:1329 [inline] RIP: 0010:gfs2_evict_inode+0xbf2/0x2030 fs/gfs2/super.c:1384 Code: 03 80 3c 02 00 0f 85 bd 13 00 00 48 8b 9d 00 09 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 8c 00 00 00 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 e0 RSP: 0018:ffffc90005ae7670 EFLAGS: 00010217 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90003a83000 RDX: 0000000000000011 RSI: ffffffff838de301 RDI: 000000000000008c RBP: ffff88802cd6c000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001 R13: ffff88802e1a5160 R14: ffff88802e1a5698 R15: ffff88802e1a5610 FS: 00007f4c042c5700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa58679d090 CR3: 000000007d0e3000 CR4: 0000000000350ee0 Call Trace: evict+0x2ed/0x6b0 fs/inode.c:664 iput_final fs/inode.c:1744 [inline] iput.part.0+0x562/0x820 fs/inode.c:1770 iput+0x58/0x70 fs/inode.c:1760 init_journal fs/gfs2/ops_fstype.c:870 [inline] init_inodes+0x28c/0x2720 fs/gfs2/ops_fstype.c:924 gfs2_fill_super+0x1b49/0x28a0 fs/gfs2/ops_fstype.c:1242 get_tree_bdev+0x440/0x760 fs/super.c:1292 gfs2_get_tree+0x4a/0x270 fs/gfs2/ops_fstype.c:1325 vfs_get_tree+0x89/0x2f0 fs/super.c:1497 do_new_mount fs/namespace.c:3040 [inline] path_mount+0x1320/0x1fa0 fs/namespace.c:3370 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3568 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 RIP: 0033:0x7f4c0308a63a Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 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 RSP: 002b:00007f4c042c4f88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f4c0308a63a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f4c042c4fe0 RBP: 00007f4c042c5020 R08: 00007f4c042c5020 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000 R13: 0000000020000100 R14: 00007f4c042c4fe0 R15: 0000000020047a20 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:evict_linked_inode fs/gfs2/super.c:1329 [inline] RIP: 0010:gfs2_evict_inode+0xbf2/0x2030 fs/gfs2/super.c:1384 Code: 03 80 3c 02 00 0f 85 bd 13 00 00 48 8b 9d 00 09 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 8c 00 00 00 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 e0 RSP: 0018:ffffc90005ae7670 EFLAGS: 00010217 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90003a83000 RDX: 0000000000000011 RSI: ffffffff838de301 RDI: 000000000000008c RBP: ffff88802cd6c000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001 R13: ffff88802e1a5160 R14: ffff88802e1a5698 R15: ffff88802e1a5610 FS: 00007f4c042c5700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa58679d090 CR3: 000000007d0e3000 CR4: 0000000000350ee0 ---------------- Code disassembly (best guess): 0: 03 80 3c 02 00 0f add 0xf00023c(%rax),%eax 6: 85 bd 13 00 00 48 test %edi,0x48000013(%rbp) c: 8b 9d 00 09 00 00 mov 0x900(%rbp),%ebx 12: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 19: fc ff df 1c: 48 8d bb 8c 00 00 00 lea 0x8c(%rbx),%rdi 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx <-- trapping instruction 2e: 48 89 f8 mov %rdi,%rax 31: 83 e0 07 and $0x7,%eax 34: 83 c0 03 add $0x3,%eax 37: 38 d0 cmp %dl,%al 39: 7c 08 jl 0x43 3b: 84 d2 test %dl,%dl 3d: 0f .byte 0xf 3e: 85 e0 test %esp,%eax