general protection fault, probably for non-canonical address 0xdffffc0000000007: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000038-0x000000000000003f] CPU: 0 PID: 11608 Comm: syz-executor.0 Tainted: G W 6.1.75-syzkaller-00007-g338203a81721 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:__ext4_journal_get_write_access+0xb0/0x690 fs/ext4/ext4_jbd2.c:231 Code: 89 ff 49 8d 5e 30 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 de 6f d0 ff 48 8b 1b 48 83 c3 38 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 c1 6f d0 ff 4c 8b 23 4d 85 e4 4c RSP: 0018:ffffc9001315eec0 EFLAGS: 00010202 RAX: 0000000000000007 RBX: 0000000000000038 RCX: 0000000000040000 RDX: ffffc90001cba000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: ffffc9001315ef90 R08: ffff888138eeb9d8 R09: 0000000000000001 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1102c12edd3 R13: dffffc0000000000 R14: ffff888138eeb9d8 R15: 0000000000000001 FS: 00007f7ce3ada6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020250000 CR3: 00000001480db000 CR4: 00000000003526b0 Call Trace: ext4_xattr_block_set+0x1dcc/0x3760 fs/ext4/xattr.c:2033 ext4_xattr_set_handle+0xdac/0x1560 fs/ext4/xattr.c:2406 ext4_initxattrs+0xa7/0x120 fs/ext4/xattr_security.c:44 security_inode_init_security+0x252/0x390 security/security.c:1133 ext4_init_security+0x34/0x40 fs/ext4/xattr_security.c:58 __ext4_new_inode+0x31ef/0x40a0 fs/ext4/ialloc.c:1328 ext4_create+0x275/0x550 fs/ext4/namei.c:2834 lookup_open fs/namei.c:3489 [inline] open_last_lookups fs/namei.c:3557 [inline] path_openat+0x12ee/0x2d60 fs/namei.c:3787 do_filp_open+0x230/0x480 fs/namei.c:3817 do_sys_openat2+0x13f/0x850 fs/open.c:1341 do_sys_open fs/open.c:1357 [inline] __do_sys_openat fs/open.c:1373 [inline] __se_sys_openat fs/open.c:1368 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1368 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f7ce2c7de69 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f7ce3ada0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f7ce2dabf80 RCX: 00007f7ce2c7de69 RDX: 00000000000026e1 RSI: 0000000020000340 RDI: ffffffffffffff9c RBP: 00007f7ce2cca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f7ce2dabf80 R15: 00007fff494d1258 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__ext4_journal_get_write_access+0xb0/0x690 fs/ext4/ext4_jbd2.c:231 Code: 89 ff 49 8d 5e 30 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 de 6f d0 ff 48 8b 1b 48 83 c3 38 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 c1 6f d0 ff 4c 8b 23 4d 85 e4 4c RSP: 0018:ffffc9001315eec0 EFLAGS: 00010202 RAX: 0000000000000007 RBX: 0000000000000038 RCX: 0000000000040000 RDX: ffffc90001cba000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: ffffc9001315ef90 R08: ffff888138eeb9d8 R09: 0000000000000001 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1102c12edd3 R13: dffffc0000000000 R14: ffff888138eeb9d8 R15: 0000000000000001 FS: 00007f7ce3ada6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000180 CR3: 00000001480db000 CR4: 00000000003526a0 ---------------- Code disassembly (best guess): 0: 89 ff mov %edi,%edi 2: 49 8d 5e 30 lea 0x30(%r14),%rbx 6: 48 89 d8 mov %rbx,%rax 9: 48 c1 e8 03 shr $0x3,%rax d: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) 12: 74 08 je 0x1c 14: 48 89 df mov %rbx,%rdi 17: e8 de 6f d0 ff call 0xffd06ffa 1c: 48 8b 1b mov (%rbx),%rbx 1f: 48 83 c3 38 add $0x38,%rbx 23: 48 89 d8 mov %rbx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 48 89 df mov %rbx,%rdi 34: e8 c1 6f d0 ff call 0xffd06ffa 39: 4c 8b 23 mov (%rbx),%r12 3c: 4d 85 e4 test %r12,%r12 3f: 4c rex.WR