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: 27728 Comm: syz-executor.3 Not tainted 5.0.0+ #100
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:mutex_can_spin_on_owner kernel/locking/mutex.c:578 [inline]
RIP: 0010:mutex_optimistic_spin kernel/locking/mutex.c:622 [inline]
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:928 [inline]
RIP: 0010:__mutex_lock+0x207/0x1310 kernel/locking/mutex.c:1072
Code: 00 0f 85 bf 0f 00 00 49 8b 45 00 48 83 e0 f8 0f 84 88 09 00 00 48 8d 78 38 48 ba 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 <0f> b6 14 11 84 d2 74 09 80 fa 03 0f 8e 8b 10 00 00 8b 58 38 85 db
RSP: 0018:ffff88805fcd73d0 EFLAGS: 00010202
RAX: 0000000000000008 RBX: ffff8880a3c6c540 RCX: 0000000000000008
RDX: dffffc0000000000 RSI: 0000000000000008 RDI: 0000000000000040
RBP: ffff88805fcd7540 R08: 1ffffd1ffffa5c00 R09: fffff91ffffa5c01
R10: fffff91ffffa5c00 R11: ffffe8ffffd2e007 R12: fffffbfff14b8d3c
R13: ffffe8ffffd2e000 R14: ffff8880a3c6c540 R15: 000000000000000f
FS:  00007f6025c5e700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2bc2a000 CR3: 000000008a19e000 CR4: 00000000001406e0
Call Trace:
 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087
 ext4_mb_group_or_file fs/ext4/mballoc.c:4209 [inline]
 ext4_mb_initialize_context+0x7e6/0xbc0 fs/ext4/mballoc.c:4252
 ext4_mb_new_blocks+0x5c4/0x3c70 fs/ext4/mballoc.c:4525
 ext4_ext_map_blocks+0x3082/0x4cd0 fs/ext4/extents.c:4397
 ext4_map_blocks+0x8c5/0x18e0 fs/ext4/inode.c:636
 ext4_alloc_file_blocks+0x287/0x9e0 fs/ext4/extents.c:4586
 ext4_fallocate+0x8bc/0x1f90 fs/ext4/extents.c:4871
 vfs_fallocate+0x4ac/0xa50 fs/open.c:308
 ioctl_preallocate+0x197/0x210 fs/ioctl.c:490
 file_ioctl fs/ioctl.c:506 [inline]
 do_vfs_ioctl+0x1185/0x1390 fs/ioctl.c:696
 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713
 __do_sys_ioctl fs/ioctl.c:720 [inline]
 __se_sys_ioctl fs/ioctl.c:718 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458079
Code: ad b8 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 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f6025c5dc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458079
RDX: 0000000020000340 RSI: 0000000040305828 RDI: 0000000000000006
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6025c5e6d4
R13: 00000000004c055b R14: 00000000004d21f8 R15: 00000000ffffffff
Modules linked in:
---[ end trace 2e651832f2e70adc ]---
RIP: 0010:mutex_can_spin_on_owner kernel/locking/mutex.c:578 [inline]
RIP: 0010:mutex_optimistic_spin kernel/locking/mutex.c:622 [inline]
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:928 [inline]
RIP: 0010:__mutex_lock+0x207/0x1310 kernel/locking/mutex.c:1072
Code: 00 0f 85 bf 0f 00 00 49 8b 45 00 48 83 e0 f8 0f 84 88 09 00 00 48 8d 78 38 48 ba 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 <0f> b6 14 11 84 d2 74 09 80 fa 03 0f 8e 8b 10 00 00 8b 58 38 85 db
RSP: 0018:ffff88805fcd73d0 EFLAGS: 00010202
RAX: 0000000000000008 RBX: ffff8880a3c6c540 RCX: 0000000000000008
RDX: dffffc0000000000 RSI: 0000000000000008 RDI: 0000000000000040
RBP: ffff88805fcd7540 R08: 1ffffd1ffffa5c00 R09: fffff91ffffa5c01
R10: fffff91ffffa5c00 R11: ffffe8ffffd2e007 R12: fffffbfff14b8d3c
R13: ffffe8ffffd2e000 R14: ffff8880a3c6c540 R15: 000000000000000f
FS:  00007f6025c5e700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2bc2a000 CR3: 000000008a19e000 CR4: 00000000001406e0