general protection fault, probably for non-canonical address 0xdffffc0000000007: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000038-0x000000000000003f] CPU: 1 PID: 3754 Comm: syz.0.658 Tainted: G W 6.1.99-syzkaller-00011-g8097478ae850 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__ext4_journal_get_write_access+0xb0/0x690 fs/ext4/ext4_jbd2.c:231 Code: 88 ff 49 8d 5e 30 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 ce 0a 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 b1 0a d0 ff 4c 8b 23 4d 85 e4 4c RSP: 0018:ffffc90003836c20 EFLAGS: 00010202 RAX: 0000000000000007 RBX: 0000000000000038 RCX: 0000000000040000 RDX: ffffc9000ddc1000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: ffffc90003836cf0 R08: ffff888110f01540 R09: 0000000000000001 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff110200ae758 R13: dffffc0000000000 R14: ffff888110f01540 R15: 0000000000000001 FS: 00007f7ee2be86c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002001e030 CR3: 0000000127645000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> ext4_reserve_inode_write+0x26d/0x360 fs/ext4/inode.c:5863 __ext4_mark_inode_dirty+0x12e/0x7d0 fs/ext4/inode.c:6037 ext4_dirty_inode+0xbd/0x100 fs/ext4/inode.c:6074 __mark_inode_dirty+0x200/0xa60 fs/fs-writeback.c:2433 mark_inode_dirty_sync include/linux/fs.h:2555 [inline] dquot_free_space include/linux/quotaops.h:385 [inline] dquot_free_block include/linux/quotaops.h:395 [inline] ext4_xattr_block_set+0x1f8e/0x37d0 fs/ext4/xattr.c:2053 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:3483 [inline] open_last_lookups fs/namei.c:3551 [inline] path_openat+0x12ee/0x2d60 fs/namei.c:3781 do_filp_open+0x230/0x480 fs/namei.c:3811 do_sys_openat2+0x151/0x870 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 x64_sys_call+0x6bf/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:258 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f7ee1d7dff9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f7ee2be8038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f7ee1f36130 RCX: 00007f7ee1d7dff9 RDX: 00000000000026e1 RSI: 0000000020000280 RDI: ffffffffffffff9c RBP: 00007f7ee1df0296 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f7ee1f36130 R15: 00007ffcea97a458 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__ext4_journal_get_write_access+0xb0/0x690 fs/ext4/ext4_jbd2.c:231 Code: 88 ff 49 8d 5e 30 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 ce 0a 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 b1 0a d0 ff 4c 8b 23 4d 85 e4 4c RSP: 0018:ffffc90003836c20 EFLAGS: 00010202 RAX: 0000000000000007 RBX: 0000000000000038 RCX: 0000000000040000 RDX: ffffc9000ddc1000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: ffffc90003836cf0 R08: ffff888110f01540 R09: 0000000000000001 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff110200ae758 R13: dffffc0000000000 R14: ffff888110f01540 R15: 0000000000000001 FS: 00007f7ee2be86c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f56935ddf98 CR3: 0000000127645000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 88 ff mov %bh,%bh 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 ce 0a d0 ff call 0xffd00aea 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 b1 0a d0 ff call 0xffd00aea 39: 4c 8b 23 mov (%rbx),%r12 3c: 4d 85 e4 test %r12,%r12 3f: 4c rex.WR