syzbot


general protection fault in fuse_file_put

Status: upstream: reported C repro on 2023/08/14 01:55
Reported-by: syzbot+b77a26994d98fd499901@syzkaller.appspotmail.com
First crash: 199d, last: 10d
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-6-1 general protection fault in fuse_file_put origin:downstream C done 6 13d 241d 0/2 upstream: reported C repro on 2023/07/02 13:38
android-5-15 general protection fault in fuse_file_put origin:downstream C 1 2d21h 168d 0/2 upstream: reported C repro on 2023/09/13 14:58
Last patch testing requests (3)
Created Duration User Patch Repo Result
2024/02/12 23:45 12m retest repro android13-5.10-lts report log
2024/01/15 19:34 6m retest repro android13-5.10-lts report log
2023/08/29 18:46 9m retest repro android13-5.10-lts report log
Fix bisection attempts (2)
Created Duration User Patch Repo Result
2023/12/04 23:03 35m bisect fix android13-5.10-lts job log (0) log
2023/11/03 19:04 1h47m bisect fix android13-5.10-lts job log (0) log

Sample crash report:
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 81 18 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:00007ff96c02a148 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007ff96c02a150 RCX: 00007ff96c0b0bd9
RDX: 0000000000080041 RSI: 00000000200001c0 RDI: 00000000ffffff9c
RBP: 0000000000000002 R08: 00007ff96c029ee6 R09: 0000000000003331
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff96c13b40c
R13: 000000000000006e R14: 00007ffedab1ced0 R15: 00007ffedab1cfb8
general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f]
CPU: 1 PID: 297 Comm: syz-executor429 Not tainted 5.10.204-syzkaller-01048-gf7977422e132 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:get_fuse_mount fs/fuse/fuse_i.h:933 [inline]
RIP: 0010:fuse_file_put+0x11b/0x2420 fs/fuse/file.c:125
Code: f0 41 0f c1 5e 28 bf 01 00 00 00 89 de e8 0d e9 6b ff 83 fb 01 0f 85 e4 00 00 00 4c 89 e9 4d 8d 6c 24 28 4c 89 e8 48 c1 e8 03 <80> 3c 08 00 74 08 4c 89 ef e8 f7 51 a9 ff 4c 8d bc 24 c0 00 00 00
RSP: 0018:ffffc90000b96f00 EFLAGS: 00010206
RAX: 0000000000000005 RBX: 0000000000000001 RCX: dffffc0000000000
RDX: ffff88811edacf00 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffc90000b972a0 R08: ffffffff81fec0c3 R09: ffffed1023393bc6
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000028 R14: ffff888119c9de00 R15: ffff888119c9de28
FS:  00007ff96c02a6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005626e31bb958 CR3: 000000011eb6d000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 fuse_sync_release+0x81/0xb0 fs/fuse/file.c:393
 fuse_create_open fs/fuse/dir.c:797 [inline]
 fuse_atomic_open+0x2914/0x34e0 fs/fuse/dir.c:858
 atomic_open fs/namei.c:3120 [inline]
 lookup_open fs/namei.c:3225 [inline]
 open_last_lookups fs/namei.c:3323 [inline]
 path_openat+0xff0/0x3000 fs/namei.c:3512
 do_filp_open+0x21c/0x460 fs/namei.c:3542
 do_sys_openat2+0x13f/0x6f0 fs/open.c:1217
 do_sys_open fs/open.c:1233 [inline]
 __do_sys_openat fs/open.c:1249 [inline]
 __se_sys_openat fs/open.c:1244 [inline]
 __x64_sys_openat+0x243/0x290 fs/open.c:1244
 do_syscall_64+0x34/0x70
 entry_SYSCALL_64_after_hwframe+0x61/0xc6
RIP: 0033:0x7ff96c0b0bd9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 81 18 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:00007ff96c02a148 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007ff96c02a150 RCX: 00007ff96c0b0bd9
RDX: 0000000000080041 RSI: 00000000200001c0 RDI: 00000000ffffff9c
RBP: 0000000000000002 R08: 00007ff96c029ee6 R09: 0000000000003331
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff96c13b40c
R13: 000000000000006e R14: 00007ffedab1ced0 R15: 00007ffedab1cfb8
Modules linked in:
---[ end trace 5cbadfa5405db03d ]---
RIP: 0010:get_fuse_mount fs/fuse/fuse_i.h:933 [inline]
RIP: 0010:fuse_file_put+0x11b/0x2420 fs/fuse/file.c:125
Code: f0 41 0f c1 5e 28 bf 01 00 00 00 89 de e8 0d e9 6b ff 83 fb 01 0f 85 e4 00 00 00 4c 89 e9 4d 8d 6c 24 28 4c 89 e8 48 c1 e8 03 <80> 3c 08 00 74 08 4c 89 ef e8 f7 51 a9 ff 4c 8d bc 24 c0 00 00 00
RSP: 0018:ffffc90000b96f00 EFLAGS: 00010206
RAX: 0000000000000005 RBX: 0000000000000001 RCX: dffffc0000000000
RDX: ffff88811edacf00 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffc90000b972a0 R08: ffffffff81fec0c3 R09: ffffed1023393bc6
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000028 R14: ffff888119c9de00 R15: ffff888119c9de28
FS:  00007ff96c02a6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005626e31bb958 CR3: 000000011eb6d000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	28 00                	sub    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	75 05                	jne    0xb
   6:	48 83 c4 28          	add    $0x28,%rsp
   a:	c3                   	ret
   b:	e8 81 18 00 00       	call   0x1891
  10:	90                   	nop
  11:	48 89 f8             	mov    %rdi,%rax
  14:	48 89 f7             	mov    %rsi,%rdi
  17:	48 89 d6             	mov    %rdx,%rsi
  1a:	48 89 ca             	mov    %rcx,%rdx
  1d:	4d 89 c2             	mov    %r8,%r10
  20:	4d 89 c8             	mov    %r9,%r8
  23:	4c 8b 4c 24 08       	mov    0x8(%rsp),%r9
  28:	0f 05                	syscall
* 2a:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax <-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 c7 c1 b0 ff ff ff 	mov    $0xffffffffffffffb0,%rcx
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Crashes (9):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/01/01 13:52 android13-5.10-lts f7977422e132 fb427a07 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_file_put
2023/08/14 01:50 android13-5.10-lts 8a427269c016 39990d51 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_file_put
2024/02/18 23:21 android13-5.10-lts dd976ecce2ce 578f7538 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_file_put
2024/01/01 13:31 android13-5.10-lts f7977422e132 fb427a07 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_file_put
2023/10/03 14:18 android13-5.10-lts a27512601c2d 65faba36 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_file_put
2023/09/16 22:41 android13-5.10-lts a27512601c2d 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_file_put
2023/09/12 00:27 android13-5.10-lts a27512601c2d 59da8366 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_file_put
2023/09/08 11:47 android13-5.10-lts a27512601c2d 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_file_put
2023/08/14 01:28 android13-5.10-lts 8a427269c016 39990d51 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_file_put
* Struck through repros no longer work on HEAD.