general protection fault, probably for non-canonical address 0xdffffc0000108420: 0000 [#1] PREEMPT SMP KASAN KASAN: probably user-memory-access in range [0x0000000000842100-0x0000000000842107] CPU: 0 PID: 16312 Comm: syz-executor.3 Not tainted 6.1.0-rc6-syzkaller-00315-gfaf68e3523c2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:string_nocheck lib/vsprintf.c:643 [inline] RIP: 0010:string+0x1b5/0x2d0 lib/vsprintf.c:725 Code: 89 de 49 ff ce 31 ed 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 8d 3c 2c 48 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 75 6a 49 8d 5c 2d 00 45 0f b6 3c 2c 31 ff 44 89 RSP: 0018:ffffc90005fc6990 EFLAGS: 00010003 RAX: 0000000000108420 RBX: ffffffffffffffff RCX: dffffc0000000000 RDX: ffff88807def3a80 RSI: 00000000ffffffff RDI: 0000000000842107 RBP: 0000000000000000 R08: ffffffff8a8cb389 R09: ffffffff8a8c7c8f R10: 0000000000000012 R11: ffff88807def3a80 R12: 0000000000842107 R13: ffffc90005fc6ee6 R14: fffffffffffffffe R15: 0000000000000000 FS: 00007fa7a6873700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33622000 CR3: 000000007ba24000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: vsnprintf+0x1221/0x1ce0 lib/vsprintf.c:2800 va_format lib/vsprintf.c:1685 [inline] pointer+0x845/0xfa0 lib/vsprintf.c:2431 vsnprintf+0xe73/0x1ce0 lib/vsprintf.c:2804 vprintk_store+0x3b0/0x1050 kernel/printk/printk.c:2152 vprintk_emit+0x9a/0x1e0 kernel/printk/printk.c:2249 _printk+0xc0/0x100 kernel/printk/printk.c:2289 gfs2_print_dbg+0x172/0x180 fs/gfs2/glock.c:1456 dump_holder fs/gfs2/glock.c:2342 [inline] gfs2_dump_glock+0x149f/0x1b60 fs/gfs2/glock.c:2447 gfs2_consist_inode_i+0xf3/0x110 fs/gfs2/util.c:465 gfs2_dirent_scan+0x535/0x650 fs/gfs2/dir.c:602 gfs2_dirent_search+0x2ea/0xb10 fs/gfs2/dir.c:850 gfs2_dir_search+0x8c/0x2a0 fs/gfs2/dir.c:1650 gfs2_lookupi+0x465/0x650 fs/gfs2/inode.c:323 __gfs2_lookup+0x8c/0x260 fs/gfs2/inode.c:870 __lookup_slow+0x266/0x3a0 fs/namei.c:1685 lookup_slow+0x53/0x70 fs/namei.c:1702 walk_component+0x2e1/0x410 fs/namei.c:1993 lookup_last fs/namei.c:2450 [inline] path_lookupat+0x17d/0x450 fs/namei.c:2474 filename_lookup+0x274/0x650 fs/namei.c:2503 user_path_at_empty+0x40/0x1a0 fs/namei.c:2876 do_readlinkat+0x10c/0x3d0 fs/stat.c:468 __do_sys_readlink fs/stat.c:501 [inline] __se_sys_readlink fs/stat.c:498 [inline] __x64_sys_readlink+0x7b/0x90 fs/stat.c:498 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fa7a5a8c0d9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007fa7a6873168 EFLAGS: 00000246 ORIG_RAX: 0000000000000059 RAX: ffffffffffffffda RBX: 00007fa7a5bac120 RCX: 00007fa7a5a8c0d9 RDX: 0000000000000047 RSI: 0000000020000140 RDI: 0000000020000000 RBP: 00007fa7a5ae7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffde5ef481f R14: 00007fa7a6873300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:string_nocheck lib/vsprintf.c:643 [inline] RIP: 0010:string+0x1b5/0x2d0 lib/vsprintf.c:725 Code: 89 de 49 ff ce 31 ed 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 8d 3c 2c 48 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 75 6a 49 8d 5c 2d 00 45 0f b6 3c 2c 31 ff 44 89 RSP: 0018:ffffc90005fc6990 EFLAGS: 00010003 RAX: 0000000000108420 RBX: ffffffffffffffff RCX: dffffc0000000000 RDX: ffff88807def3a80 RSI: 00000000ffffffff RDI: 0000000000842107 RBP: 0000000000000000 R08: ffffffff8a8cb389 R09: ffffffff8a8c7c8f R10: 0000000000000012 R11: ffff88807def3a80 R12: 0000000000842107 R13: ffffc90005fc6ee6 R14: fffffffffffffffe R15: 0000000000000000 FS: 00007fa7a6873700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33622000 CR3: 000000007ba24000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 89 de mov %ebx,%esi 2: 49 ff ce dec %r14 5: 31 ed xor %ebp,%ebp 7: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1) e: 00 00 00 11: 0f 1f 40 00 nopl 0x0(%rax) 15: 49 8d 3c 2c lea (%r12,%rbp,1),%rdi 19: 48 89 f8 mov %rdi,%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: 0f b6 04 08 movzbl (%rax,%rcx,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 75 6a jne 0x9c 32: 49 8d 5c 2d 00 lea 0x0(%r13,%rbp,1),%rbx 37: 45 0f b6 3c 2c movzbl (%r12,%rbp,1),%r15d 3c: 31 ff xor %edi,%edi 3e: 44 rex.R 3f: 89 .byte 0x89