kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 12956 Comm: syz-executor1 Not tainted 4.20.0+ #396
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:fuse_retrieve fs/fuse/dev.c:1745 [inline]
RIP: 0010:fuse_notify_retrieve fs/fuse/dev.c:1807 [inline]
RIP: 0010:fuse_notify fs/fuse/dev.c:1840 [inline]
RIP: 0010:fuse_dev_do_write+0x1dc2/0x3820 fs/fuse/dev.c:1919
Code: 00 48 c1 e0 2a 80 3c 02 00 0f 85 e9 17 00 00 49 8b 9d 58 01 00 00 b8 ff ff 37 00 48 c1 e0 2a 48 8d 7b 04 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 8f
RSP: 0018:ffff8880536df4b8 EFLAGS: 00010247
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90007dd5000
RDX: 0000000000000000 RSI: ffffffff828b6f73 RDI: 0000000000000004
RBP: ffff8880536dfa50 R08: ffff88808d4546c0 R09: ffffed1013da637e
R10: ffffed1013da637e R11: ffff88809ed31bf3 R12: 0000000000000000
R13: ffff88809ed31bd0 R14: 0000000000000000 R15: 0000000000000030
FS:  00007f3b8913a700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000940004 CR3: 00000000a492a000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 fuse_dev_write+0x19a/0x240 fs/fuse/dev.c:2003
 call_write_iter include/linux/fs.h:1862 [inline]
 new_sync_write fs/read_write.c:474 [inline]
 __vfs_write+0x72c/0xab0 fs/read_write.c:487
 vfs_write+0x1fc/0x580 fs/read_write.c:549
 ksys_write+0x101/0x260 fs/read_write.c:598
 __do_sys_write fs/read_write.c:610 [inline]
 __se_sys_write fs/read_write.c:607 [inline]
 __x64_sys_write+0x73/0xb0 fs/read_write.c:607
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457ec9
Code: 6d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f3b89139c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457ec9
RDX: 0000000000000030 RSI: 0000000020000100 RDI: 0000000000000003
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3b8913a6d4
R13: 00000000004c6a94 R14: 00000000004dbb80 R15: 00000000ffffffff
Modules linked in:
---[ end trace 7c6a24cfecce8be3 ]---
kobject: 'loop0' (00000000f7ee0647): kobject_uevent_env
RIP: 0010:fuse_retrieve fs/fuse/dev.c:1745 [inline]
RIP: 0010:fuse_notify_retrieve fs/fuse/dev.c:1807 [inline]
RIP: 0010:fuse_notify fs/fuse/dev.c:1840 [inline]
RIP: 0010:fuse_dev_do_write+0x1dc2/0x3820 fs/fuse/dev.c:1919
kobject: 'loop0' (00000000f7ee0647): fill_kobj_path: path = '/devices/virtual/block/loop0'
Code: 00 48 c1 e0 2a 80 3c 02 00 0f 85 e9 17 00 00 49 8b 9d 58 01 00 00 b8 ff ff 37 00 48 c1 e0 2a 48 8d 7b 04 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 8f
RSP: 0018:ffff8880536df4b8 EFLAGS: 00010247
kobject: 'kvm' (000000001c37e6fe): kobject_uevent_env
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90007dd5000
kobject: 'kvm' (000000001c37e6fe): fill_kobj_path: path = '/devices/virtual/misc/kvm'
RDX: 0000000000000000 RSI: ffffffff828b6f73 RDI: 0000000000000004
RBP: ffff8880536dfa50 R08: ffff88808d4546c0 R09: ffffed1013da637e
kobject: 'loop5' (00000000e0c85f9b): kobject_uevent_env
kobject: 'loop5' (00000000e0c85f9b): fill_kobj_path: path = '/devices/virtual/block/loop5'
R10: ffffed1013da637e R11: ffff88809ed31bf3 R12: 0000000000000000
R13: ffff88809ed31bd0 R14: 0000000000000000 R15: 0000000000000030
FS:  00007f3b8913a700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
kobject: 'loop0' (00000000f7ee0647): kobject_uevent_env
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kobject: 'loop0' (00000000f7ee0647): fill_kobj_path: path = '/devices/virtual/block/loop0'
CR2: 00000000004cd850 CR3: 00000000a492a000 CR4: 00000000001426e0
kobject: 'kvm' (000000001c37e6fe): kobject_uevent_env
kobject: 'kvm' (000000001c37e6fe): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop5' (00000000e0c85f9b): kobject_uevent_env
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
kobject: 'loop5' (00000000e0c85f9b): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'kvm' (000000001c37e6fe): kobject_uevent_env
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
kobject: '0:51' (000000009128ae27): kobject_uevent_env
kobject: 'kvm' (000000001c37e6fe): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000001c37e6fe): kobject_uevent_env