Hello, syzbot found the following crash on: HEAD commit: 6954a9e4 ibmvnic: Flush existing work items before device .. git tree: net console output: https://syzkaller.appspot.com/x/log.txt?x=1367d939100000 kernel config: https://syzkaller.appspot.com/x/.config?x=b366fd92adf6f8b4 dashboard link: https://syzkaller.appspot.com/bug?extid=e10468d1d0662fdb7c8c compiler: gcc (GCC) 9.0.0 20181231 (experimental) IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+e10468d1d0662fdb7c8c@xxxxxxxxxxxxxxxxxxxxxxxxx BUG: using smp_processor_id() in preemptible [00000000] code: systemd-tmpfile/3971 caller is ext4_mb_new_blocks+0xa77/0x3b30 fs/ext4/mballoc.c:4711 CPU: 0 PID: 3971 Comm: systemd-tmpfile Not tainted 5.7.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x188/0x20d lib/dump_stack.c:118 check_preemption_disabled lib/smp_processor_id.c:47 [inline] debug_smp_processor_id.cold+0x88/0x9b lib/smp_processor_id.c:57 ext4_mb_new_blocks+0xa77/0x3b30 fs/ext4/mballoc.c:4711 ext4_ext_map_blocks+0x2044/0x3410 fs/ext4/extents.c:4244 ext4_map_blocks+0x4cb/0x1640 fs/ext4/inode.c:626 ext4_getblk+0xad/0x520 fs/ext4/inode.c:833 ext4_bread+0x7c/0x380 fs/ext4/inode.c:883 ext4_append+0x153/0x360 fs/ext4/namei.c:67 ext4_init_new_dir fs/ext4/namei.c:2757 [inline] ext4_mkdir+0x5e0/0xdf0 fs/ext4/namei.c:2802 vfs_mkdir+0x419/0x690 fs/namei.c:3627 do_mkdirat+0x21e/0x280 fs/namei.c:3650 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x49/0xb3 RIP: 0033:0x7ffa928d3687 Code: 00 b8 ff ff ff ff c3 0f 1f 40 00 48 8b 05 09 d8 2b 00 64 c7 00 5f 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 d7 2b 00 f7 d8 64 89 01 48 RSP: 002b:00007fff732d3c08 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00005637eeaceda0 RCX: 00007ffa928d3687 RDX: 0000000000000000 RSI: 00000000000001ed RDI: 00005637eeaceda0 RBP: 00000000000001ed R08: 000000000000feff R09: 000000000000004c R10: 00005637eeaced80 R11: 0000000000000246 R12: 0000000000000012 R13: 00005637eeacf640 R14: 0000000000000000 R15: 0000000000000000 BUG: using smp_processor_id() in preemptible [00000000] code: systemd-tmpfile/3971 caller is ext4_mb_new_blocks+0xa77/0x3b30 fs/ext4/mballoc.c:4711 CPU: 0 PID: 3971 Comm: systemd-tmpfile Not tainted 5.7.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x188/0x20d lib/dump_stack.c:118 check_preemption_disabled lib/smp_processor_id.c:47 [inline] debug_smp_processor_id.cold+0x88/0x9b lib/smp_processor_id.c:57 ext4_mb_new_blocks+0xa77/0x3b30 fs/ext4/mballoc.c:4711 ext4_ext_map_blocks+0x2044/0x3410 fs/ext4/extents.c:4244 ext4_map_blocks+0x4cb/0x1640 fs/ext4/inode.c:626 ext4_getblk+0xad/0x520 fs/ext4/inode.c:833 ext4_bread+0x7c/0x380 fs/ext4/inode.c:883 ext4_append+0x153/0x360 fs/ext4/namei.c:67 ext4_init_new_dir fs/ext4/namei.c:2757 [inline] ext4_mkdir+0x5e0/0xdf0 fs/ext4/namei.c:2802 vfs_mkdir+0x419/0x690 fs/namei.c:3627 do_mkdirat+0x21e/0x280 fs/namei.c:3650 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x49/0xb3 RIP: 0033:0x7ffa928d3687 Code: 00 b8 ff ff ff ff c3 0f 1f 40 00 48 8b 05 09 d8 2b 00 64 c7 00 5f 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 d7 2b 00 f7 d8 64 89 01 48 RSP: 002b:00007fff732d3c08 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00005637eead0870 RCX: 00007ffa928d3687 RDX: 0000000000000000 RSI: 00000000000003ff RDI: 00005637eead0870 RBP: 00000000000003ff R08: 000000000000fec0 R09: 000000000000004c R10: 00005637eead0840 R11: 0000000000000246 R12: 0000000000000012 R13: 00005637eead0890 R14: 0000000000000000 R15: 0000000000000000 BUG: using smp_processor_id() in preemptible [00000000] code: systemd-tmpfile/3971 caller is ext4_mb_new_blocks+0xa77/0x3b30 fs/ext4/mballoc.c:4711 CPU: 1 PID: 3971 Comm: systemd-tmpfile Not tainted 5.7.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x188/0x20d lib/dump_stack.c:118 check_preemption_disabled lib/smp_processor_id.c:47 [inline] debug_smp_processor_id.cold+0x88/0x9b lib/smp_processor_id.c:57 ext4_mb_new_blocks+0xa77/0x3b30 fs/ext4/mballoc.c:4711 ext4_ext_map_blocks+0x2044/0x3410 fs/ext4/extents.c:4244 ext4_map_blocks+0x4cb/0x1640 fs/ext4/inode.c:626 ext4_getblk+0xad/0x520 fs/ext4/inode.c:833 ext4_bread+0x7c/0x380 fs/ext4/inode.c:883 ext4_append+0x153/0x360 fs/ext4/namei.c:67 ext4_init_new_dir fs/ext4/namei.c:2757 [inline] ext4_mkdir+0x5e0/0xdf0 fs/ext4/namei.c:2802 vfs_mkdir+0x419/0x690 fs/namei.c:3627 do_mkdirat+0x21e/0x280 fs/namei.c:3650 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x49/0xb3 RIP: 0033:0x7ffa928d3687 Code: 00 b8 ff ff ff ff c3 0f 1f 40 00 48 8b 05 09 d8 2b 00 64 c7 00 5f 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 d7 2b 00 f7 d8 64 89 01 48 RSP: 002b:00007fff732d3c08 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00005637eeace050 RCX: 00007ffa928d3687 RDX: 0000000000000000 RSI: 00000000000003ff RDI: 00005637eeace050 RBP: 00000000000003ff R08: 000000000000fec0 R09: 000000000000004c R10: 00005637eeace040 R11: 0000000000000246 R12: 0000000000000012 R13: 00005637eeace070 R14: 0000000000000000 R15: 0000000000000000 BUG: using smp_processor_id() in preemptible [00000000] code: systemd-tmpfile/3971 caller is ext4_mb_new_blocks+0xa77/0x3b30 fs/ext4/mballoc.c:4711 CPU: 0 PID: 3971 Comm: systemd-tmpfile Not tainted 5.7.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x188/0x20d lib/dump_stack.c:118 check_preemption_disabled lib/smp_processor_id.c:47 [inline] debug_smp_processor_id.cold+0x88/0x9b lib/smp_processor_id.c:57 ext4_mb_new_blocks+0xa77/0x3b30 fs/ext4/mballoc.c:4711 ext4_ext_map_blocks+0x2044/0x3410 fs/ext4/extents.c:4244 ext4_map_blocks+0x4cb/0x1640 fs/ext4/inode.c:626 ext4_getblk+0xad/0x520 fs/ext4/inode.c:833 ext4_bread+0x7c/0x380 fs/ext4/inode.c:883 ext4_append+0x153/0x360 fs/ext4/namei.c:67 ext4_init_new_dir fs/ext4/namei.c:2757 [inline] ext4_mkdir+0x5e0/0xdf0 fs/ext4/namei.c:2802 vfs_mkdir+0x419/0x690 fs/namei.c:3627 do_mkdirat+0x21e/0x280 fs/namei.c:3650 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x49/0xb3 RIP: 0033:0x7ffa928d3687 Code: 00 b8 ff ff ff ff c3 0f 1f 40 00 48 8b 05 09 d8 2b 00 64 c7 00 5f 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 d7 2b 00 f7 d8 64 89 01 48 RSP: 002b:00007fff732d3c08 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00005637eeace160 RCX: 00007ffa928d3687 RDX: 0000000000000000 RSI: 00000000000003ff RDI: 00005637eeace160 RBP: 00000000000003ff R08: 000000000000fec0 R09: 000000000000004c R10: 00005637eeace140 R11: 0000000000000246 R12: 0000000000000012 R13: 00005637eeace180 R14: 0000000000000000 R15: 0000000000000000 BUG: using smp_processor_id() in preemptible [00000000] code: systemd-tmpfile/3971 caller is ext4_mb_new_blocks+0xa77/0x3b30 fs/ext4/mballoc.c:4711 CPU: 0 PID: 3971 Comm: systemd-tmpfile Not tainted 5.7.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x188/0x20d lib/dump_stack.c:118 check_preemption_disabled lib/smp_processor_id.c:47 [inline] debug_smp_processor_id.cold+0x88/0x9b lib/smp_processor_id.c:57 ext4_mb_new_blocks+0xa77/0x3b30 fs/ext4/mballoc.c:4711 ext4_ext_map_blocks+0x2044/0x3410 fs/ext4/extents.c:4244 ext4_map_blocks+0x4cb/0x1640 fs/ext4/inode.c:626 ext4_getblk+0xad/0x520 fs/ext4/inode.c:833 ext4_bread+0x7c/0x380 fs/ext4/inode.c:883 ext4_append+0x153/0x360 fs/ext4/namei.c:67 ext4_init_new_dir fs/ext4/namei.c:2757 [inline] ext4_mkdir+0x5e0/0xdf0 fs/ext4/namei.c:2802 vfs_mkdir+0x419/0x690 fs/namei.c:3627 do_mkdirat+0x21e/0x280 fs/namei.c:3650 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x49/0xb3 RIP: 0033:0x7ffa928d3687 Code: 00 b8 ff ff ff ff c3 0f 1f 40 00 48 8b 05 09 d8 2b 00 64 c7 00 5f 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 d7 2b 00 f7 d8 64 89 01 48 RSP: 002b:00007fff732d3c08 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00005637eead1890 RCX: 00007ffa928d3687 RDX: 0000000000000000 RSI: 00000000000003ff RDI: 00005637eead1890 RBP: 00000000000003ff R08: 000000000000fec0 R09: 000000000000004c R10: 00005637eead1880 R11: 0000000000000246 R12: 0000000000000012 R13: 00005637eead18b0 R14: 0000000000000000 R15: 0000000000000000 BUG: using smp_processor_id() in preemptible [00000000] code: systemd-tmpfile/3971 caller is ext4_mb_new_blocks+0xa77/0x3b30 fs/ext4/mballoc.c:4711 CPU: 0 PID: 3971 Comm: systemd-tmpfile Not tainted 5.7.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x188/0x20d lib/dump_stack.c:118 check_preemption_disabled lib/smp_processor_id.c:47 [inline] debug_smp_processor_id.cold+0x88/0x9b lib/smp_processor_id.c:57 ext4_mb_new_blocks+0xa77/0x3b30 fs/ext4/mballoc.c:4711 ext4_ext_map_blocks+0x2044/0x3410 fs/ext4/extents.c:4244 ext4_map_blocks+0x4cb/0x1640 fs/ext4/inode.c:626 ext4_getblk+0xad/0x520 fs/ext4/inode.c:833 ext4_bread+0x7c/0x380 fs/ext4/inode.c:883 ext4_append+0x153/0x360 fs/ext4/namei.c:67 ext4_init_new_dir fs/ext4/namei.c:2757 [inline] ext4_mkdir+0x5e0/0xdf0 fs/ext4/namei.c:2802 vfs_mkdir+0x419/0x690 fs/namei.c:3627 do_mkdirat+0x21e/0x280 fs/namei.c:3650 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x49/0xb3 RIP: 0033:0x7ffa928d3687 Code: 00 b8 ff ff ff ff c3 0f 1f 40 00 48 8b 05 09 d8 2b 00 64 c7 00 5f 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 d7 2b 00 f7 d8 64 89 01 48 RSP: 002b:00007fff732d3c08 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00005637eead19a0 RCX: 00007ffa928d3687 RDX: 0000000000000000 RSI: 00000000000003ff RDI: 00005637eead19a0 RBP: 00000000000003ff R08: 000000000000fec0 R09: 000000000000004c R10: 00005637eead1980 R11: 0000000000000246 R12: 0000000000000012 R13: 00005637eead19c0 R14: 0000000000000000 R15: 0000000000000000 --- This bug is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this bug report. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
