kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 17000 Comm: syz-executor3 Not tainted 5.0.0-rc2+ #31
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
kobject: 'loop2' (000000005be5e6ad): 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+0x1e44/0x3780 fs/fuse/dev.c:1919
Code: 00 48 c1 e0 2a 80 3c 02 00 0f 85 d5 18 00 00 49 8b 9f 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 39
RSP: 0018:ffff88804cd276d8 EFLAGS: 00010247
kobject: 'loop2' (000000005be5e6ad): fill_kobj_path: path = '/devices/virtual/block/loop2'
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000c452000
RDX: 0000000000000000 RSI: ffffffff828b9c3c RDI: 0000000000000004
RBP: ffff88804cd27aa8 R08: ffff88808cab6240 R09: ffffed101499397f
kobject: 'loop5' (00000000a2dd8881): kobject_uevent_env
R10: ffffed101499397e R11: ffff8880a4c9cbf3 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000030 R15: ffff8880a4c9cbd0
FS:  00007fa383a88700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kobject: 'loop5' (00000000a2dd8881): fill_kobj_path: path = '/devices/virtual/block/loop5'
CR2: 0000000000a4fd98 CR3: 00000000a76f9000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
kobject: 'loop2' (000000005be5e6ad): kobject_uevent_env
kobject: 'loop2' (000000005be5e6ad): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop5' (00000000a2dd8881): kobject_uevent_env
 fuse_dev_write+0x191/0x240 fs/fuse/dev.c:2003
kobject: 'loop5' (00000000a2dd8881): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop4' (000000006bd10ad9): kobject_uevent_env
 call_write_iter include/linux/fs.h:1862 [inline]
 new_sync_write fs/read_write.c:474 [inline]
 __vfs_write+0x764/0xb40 fs/read_write.c:487
kobject: 'loop4' (000000006bd10ad9): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop1' (00000000478d4b77): kobject_uevent_env
 vfs_write+0x20c/0x580 fs/read_write.c:549
kobject: 'loop1' (00000000478d4b77): fill_kobj_path: path = '/devices/virtual/block/loop1'
 ksys_write+0x105/0x260 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+0x1a3/0x800 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458099
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:00007fa383a87c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458099
RDX: 0000000000000030 RSI: 0000000020000080 RDI: 0000000000000003
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa383a886d4
R13: 00000000004c6efc R14: 00000000004dc520 R15: 00000000ffffffff
Modules linked in:
---[ end trace 2e37da5865739048 ]---
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+0x1e44/0x3780 fs/fuse/dev.c:1919
Code: 00 48 c1 e0 2a 80 3c 02 00 0f 85 d5 18 00 00 49 8b 9f 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 39
RSP: 0018:ffff88804cd276d8 EFLAGS: 00010247
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000c452000
RDX: 0000000000000000 RSI: ffffffff828b9c3c RDI: 0000000000000004
RBP: ffff88804cd27aa8 R08: ffff88808cab6240 R09: ffffed101499397f
R10: ffffed101499397e R11: ffff8880a4c9cbf3 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000030 R15: ffff8880a4c9cbd0
FS:  00007fa383a88700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff600400 CR3: 00000000a76f9000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400