overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. BUG: unable to handle page fault for address: ffffffffffffffc3 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD bc8f067 P4D bc8f067 PUD bc91067 PMD 0 Oops: 0002 [#1] PREEMPT SMP KASAN CPU: 0 PID: 5652 Comm: syz-executor.4 Not tainted 6.1.0-rc3-next-20221103-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 RIP: 0010:arch_atomic_fetch_sub arch/x86/include/asm/atomic.h:190 [inline] RIP: 0010:atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:177 [inline] RIP: 0010:__refcount_sub_and_test include/linux/refcount.h:272 [inline] RIP: 0010:__refcount_dec_and_test include/linux/refcount.h:315 [inline] RIP: 0010:refcount_dec_and_test include/linux/refcount.h:333 [inline] RIP: 0010:posix_acl_release include/linux/posix_acl.h:57 [inline] RIP: 0010:posix_acl_release include/linux/posix_acl.h:55 [inline] RIP: 0010:ovl_set_or_remove_acl fs/overlayfs/inode.c:624 [inline] RIP: 0010:ovl_set_acl+0x730/0x910 fs/overlayfs/inode.c:685 Code: a4 24 ff 4c 89 ff 49 89 c4 e8 6c 4c 81 fe 4d 85 e4 74 7f e8 b2 02 ad fe be 04 00 00 00 4c 89 e7 bb ff ff ff ff e8 90 92 f9 fe 41 0f c1 1c 24 bf 01 00 00 00 89 de e8 5e ff ac fe 83 fb 01 0f RSP: 0018:ffffc90005de79b8 EFLAGS: 00010246 RAX: 0000000000000001 RBX: 00000000ffffffff RCX: ffffffff82cfcd70 RDX: fffffbfffffffff9 RSI: 0000000000000004 RDI: ffffffffffffffc3 RBP: ffff888081c18468 R08: 0000000000000001 R09: ffffffffffffffc6 R10: fffffbfffffffff8 R11: 0000000000000001 R12: ffffffffffffffc3 R13: ffff888081f24c18 R14: 1ffff92000bbcf3c R15: ffff88801c996000 FS: 00007f9f75078700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffc3 CR3: 000000007e24b000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: set_posix_acl+0x257/0x320 fs/posix_acl.c:957 vfs_set_acl+0x576/0x9b0 fs/posix_acl.c:1099 do_set_acl+0x108/0x1c0 fs/posix_acl.c:1248 do_setxattr+0xc2/0x190 fs/xattr.c:604 setxattr+0x146/0x160 fs/xattr.c:630 path_setxattr+0x197/0x1c0 fs/xattr.c:649 __do_sys_lsetxattr fs/xattr.c:672 [inline] __se_sys_lsetxattr fs/xattr.c:668 [inline] __x64_sys_lsetxattr+0xbd/0x150 fs/xattr.c:668 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+0x63/0xcd RIP: 0033:0x7f9f7428b5a9 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f9f75078168 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd RAX: ffffffffffffffda RBX: 00007f9f743abf80 RCX: 00007f9f7428b5a9 RDX: 00000000200003c0 RSI: 0000000020000340 RDI: 0000000020000300 RBP: 00007f9f742e67b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff6612097f R14: 00007f9f75078300 R15: 0000000000022000 Modules linked in: CR2: ffffffffffffffc3 ---[ end trace 0000000000000000 ]--- RIP: 0010:arch_atomic_fetch_sub arch/x86/include/asm/atomic.h:190 [inline] RIP: 0010:atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:177 [inline] RIP: 0010:__refcount_sub_and_test include/linux/refcount.h:272 [inline] RIP: 0010:__refcount_dec_and_test include/linux/refcount.h:315 [inline] RIP: 0010:refcount_dec_and_test include/linux/refcount.h:333 [inline] RIP: 0010:posix_acl_release include/linux/posix_acl.h:57 [inline] RIP: 0010:posix_acl_release include/linux/posix_acl.h:55 [inline] RIP: 0010:ovl_set_or_remove_acl fs/overlayfs/inode.c:624 [inline] RIP: 0010:ovl_set_acl+0x730/0x910 fs/overlayfs/inode.c:685 Code: a4 24 ff 4c 89 ff 49 89 c4 e8 6c 4c 81 fe 4d 85 e4 74 7f e8 b2 02 ad fe be 04 00 00 00 4c 89 e7 bb ff ff ff ff e8 90 92 f9 fe 41 0f c1 1c 24 bf 01 00 00 00 89 de e8 5e ff ac fe 83 fb 01 0f RSP: 0018:ffffc90005de79b8 EFLAGS: 00010246 RAX: 0000000000000001 RBX: 00000000ffffffff RCX: ffffffff82cfcd70 RDX: fffffbfffffffff9 RSI: 0000000000000004 RDI: ffffffffffffffc3 RBP: ffff888081c18468 R08: 0000000000000001 R09: ffffffffffffffc6 R10: fffffbfffffffff8 R11: 0000000000000001 R12: ffffffffffffffc3 R13: ffff888081f24c18 R14: 1ffff92000bbcf3c R15: ffff88801c996000 FS: 00007f9f75078700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffc3 CR3: 000000007e24b000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: a4 movsb %ds:(%rsi),%es:(%rdi) 1: 24 ff and $0xff,%al 3: 4c 89 ff mov %r15,%rdi 6: 49 89 c4 mov %rax,%r12 9: e8 6c 4c 81 fe callq 0xfe814c7a e: 4d 85 e4 test %r12,%r12 11: 74 7f je 0x92 13: e8 b2 02 ad fe callq 0xfead02ca 18: be 04 00 00 00 mov $0x4,%esi 1d: 4c 89 e7 mov %r12,%rdi 20: bb ff ff ff ff mov $0xffffffff,%ebx 25: e8 90 92 f9 fe callq 0xfef992ba * 2a: f0 41 0f c1 1c 24 lock xadd %ebx,(%r12) <-- trapping instruction 30: bf 01 00 00 00 mov $0x1,%edi 35: 89 de mov %ebx,%esi 37: e8 5e ff ac fe callq 0xfeacff9a 3c: 83 fb 01 cmp $0x1,%ebx 3f: 0f .byte 0xf