ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 2 ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 3 ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 4 BUG: unable to handle kernel paging request at 0000000019ec74a6 PGD 0 P4D 0 Oops: 0000 [#1] SMP PTI CPU: 1 PID: 3104 Comm: syz-executor.0 Not tainted 4.19.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:freelist_dereference mm/slub.c:262 [inline] RIP: 0010:get_freepointer mm/slub.c:268 [inline] RIP: 0010:get_freepointer_safe mm/slub.c:282 [inline] RIP: 0010:slab_alloc_node mm/slub.c:2675 [inline] RIP: 0010:slab_alloc mm/slub.c:2714 [inline] RIP: 0010:kmem_cache_alloc+0x86/0x1e0 mm/slub.c:2719 Code: 65 4c 03 05 94 be dd 7e 49 83 78 10 00 4d 8b 20 0f 84 18 01 00 00 4d 85 e4 0f 84 0f 01 00 00 49 8b 39 41 8b 41 20 40 f6 c7 0f <49> 8b 1c 04 0f 85 49 01 00 00 48 8d 4a 01 4c 89 e0 65 48 0f c7 0f RSP: 0018:ffffc900012f7c48 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00000000fffffffe RDX: 0000000000002def RSI: 00000000000000b0 RDI: 0000000000026da0 RBP: ffffc900012f7c78 R08: ffff880237b26da0 R09: ffff8802336a56c0 R10: 0000000000000000 R11: ffff88022c9e9f48 R12: 0000000019ec74a6 R13: 0000000000608040 R14: ffffffff8146826b R15: ffff8802336a56c0 FS: 00007f6670f6f480(0000) GS:ffff880237b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000019ec74a6 CR3: 000000022b494000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kmem_cache_zalloc include/linux/slab.h:697 [inline] new_inode_smack+0x1b/0x50 security/smack/smack_lsm.c:300 smack_inode_alloc_security+0x24/0x40 security/smack/smack_lsm.c:975 security_inode_alloc+0x2a/0x40 security/security.c:448 inode_init_always+0xf8/0x230 fs/inode.c:168 alloc_inode+0x2e/0x80 fs/inode.c:217 new_inode_pseudo+0xc/0x60 fs/inode.c:903 new_inode+0x14/0x30 fs/inode.c:932 __ext4_new_inode+0x12a/0x15b0 fs/ext4/ialloc.c:829 ext4_symlink+0x11e/0x400 fs/ext4/namei.c:3093 vfs_symlink+0xe6/0x170 fs/namei.c:4127 do_symlinkat+0xdd/0xf0 fs/namei.c:4154 __do_sys_symlinkat fs/namei.c:4168 [inline] __se_sys_symlinkat fs/namei.c:4165 [inline] __x64_sys_symlinkat+0x15/0x20 fs/namei.c:4165 do_syscall_64+0x69/0x170 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f6670023527 Code: 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 0a 01 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:00007fff74420998 EFLAGS: 00000202 ORIG_RAX: 000000000000010a RAX: ffffffffffffffda RBX: 00007fff74420a60 RCX: 00007f6670023527 RDX: 00007f6670070526 RSI: 00000000ffffff9c RDI: 00007fff74420a60 RBP: 0000000000000001 R08: 0000000000000017 R09: 00007fff744206e7 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 Modules linked in: CR2: 0000000019ec74a6 ---[ end trace 59aac3baa4b09cbf ]--- RIP: 0010:freelist_dereference mm/slub.c:262 [inline] RIP: 0010:get_freepointer mm/slub.c:268 [inline] RIP: 0010:get_freepointer_safe mm/slub.c:282 [inline] RIP: 0010:slab_alloc_node mm/slub.c:2675 [inline] RIP: 0010:slab_alloc mm/slub.c:2714 [inline] RIP: 0010:kmem_cache_alloc+0x86/0x1e0 mm/slub.c:2719 Code: 65 4c 03 05 94 be dd 7e 49 83 78 10 00 4d 8b 20 0f 84 18 01 00 00 4d 85 e4 0f 84 0f 01 00 00 49 8b 39 41 8b 41 20 40 f6 c7 0f <49> 8b 1c 04 0f 85 49 01 00 00 48 8d 4a 01 4c 89 e0 65 48 0f c7 0f RSP: 0018:ffffc900012f7c48 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00000000fffffffe RDX: 0000000000002def RSI: 00000000000000b0 RDI: 0000000000026da0 RBP: ffffc900012f7c78 R08: ffff880237b26da0 R09: ffff8802336a56c0 R10: 0000000000000000 R11: ffff88022c9e9f48 R12: 0000000019ec74a6 R13: 0000000000608040 R14: ffffffff8146826b R15: ffff8802336a56c0 FS: 00007f6670f6f480(0000) GS:ffff880237b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000019ec74a6 CR3: 000000022b494000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 65 4c 03 05 94 be dd add %gs:0x7eddbe94(%rip),%r8 # 0x7eddbe9c 7: 7e 8: 49 83 78 10 00 cmpq $0x0,0x10(%r8) d: 4d 8b 20 mov (%r8),%r12 10: 0f 84 18 01 00 00 je 0x12e 16: 4d 85 e4 test %r12,%r12 19: 0f 84 0f 01 00 00 je 0x12e 1f: 49 8b 39 mov (%r9),%rdi 22: 41 8b 41 20 mov 0x20(%r9),%eax 26: 40 f6 c7 0f test $0xf,%dil * 2a: 49 8b 1c 04 mov (%r12,%rax,1),%rbx <-- trapping instruction 2e: 0f 85 49 01 00 00 jne 0x17d 34: 48 8d 4a 01 lea 0x1(%rdx),%rcx 38: 4c 89 e0 mov %r12,%rax 3b: 65 48 0f c7 0f cmpxchg16b %gs:(%rdi)