device hsr_slave_1 left promiscuous mode device hsr_slave_0 left promiscuous mode team0 (unregistering): Port device team_slave_1 removed audit: type=1804 audit(1569393210.146:107): pid=22359 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=invalid_pcr cause=ToMToU comm="syz-executor.2" name="/root/syzkaller-testdir856972253/syzkaller.zscK1T/113/file0/file0" dev="loop2" ino=10 res=1 ------------[ cut here ]------------ kernel BUG at fs/buffer.c:553! team0 (unregistering): Port device team_slave_0 removed invalid opcode: 0000 [#1] PREEMPT SMP KASAN kobject: 'batman_adv' (00000000a30501b0): kobject_uevent_env CPU: 1 PID: 22359 Comm: syz-executor.2 Not tainted 4.19.75 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:mark_buffer_dirty_inode fs/buffer.c:553 [inline] RIP: 0010:mark_buffer_dirty_inode+0x30f/0x410 fs/buffer.c:544 kobject: 'batman_adv' (00000000a30501b0): kobject_uevent_env: filter function caused the event to drop! Code: 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 75 4d 4c 89 63 58 4c 89 ef e8 2b 4d 3b 05 e9 ee fd ff ff e8 61 7b b2 ff <0f> 0b 4c 89 ff e8 d7 0e e9 ff e9 d3 fd ff ff e8 cd 0e e9 ff e9 5b RSP: 0018:ffff888045fff5c0 EFLAGS: 00010212 RAX: 0000000000040000 RBX: ffff888040d4e000 RCX: ffffc90006078000 RDX: 00000000000228f3 RSI: ffffffff81b8e71f RDI: ffff888040d61470 RBP: ffff888045fff600 R08: ffff888056f24340 R09: 0000000000000004 kobject: 'batman_adv' (00000000a30501b0): kobject_cleanup, parent (null) R10: ffffed1015d24732 R11: ffff8880ae923993 R12: ffff888040d61310 R13: 0000000000000000 R14: ffff8880a6d61a58 R15: ffff88807d5ac300 FS: 00007fb74a82a700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 kobject: 'batman_adv' (00000000a30501b0): calling ktype release CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2d891c5518 CR3: 0000000085373000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kobject: (00000000a30501b0): dynamic_kobj_release fat16_ent_put+0xd2/0x110 fs/fat/fatent.c:182 kobject: 'batman_adv': free name fat_free_clusters+0x3de/0x990 fs/fat/fatent.c:594 kobject: 'rx-0' (0000000088ed71d5): kobject_cleanup, parent 000000003f8de65c kobject: 'rx-0' (0000000088ed71d5): auto cleanup 'remove' event fat_free fs/fat/file.c:384 [inline] fat_truncate_blocks+0x763/0xc10 fs/fat/file.c:402 kobject: 'rx-0' (0000000088ed71d5): kobject_uevent_env kobject: 'rx-0' (0000000088ed71d5): kobject_uevent_env: uevent_suppress caused the event to drop! fat_setattr+0x806/0xc80 fs/fat/file.c:546 kobject: 'rx-0' (0000000088ed71d5): auto cleanup kobject_del notify_change+0xad7/0xfb0 fs/attr.c:334 do_truncate+0x158/0x220 fs/open.c:63 kobject: 'rx-0' (0000000088ed71d5): calling ktype release kobject: 'rx-0': free name handle_truncate fs/namei.c:3008 [inline] do_last fs/namei.c:3424 [inline] path_openat+0x2c27/0x45e0 fs/namei.c:3534 kobject: 'tx-0' (00000000908ae3f7): kobject_cleanup, parent 000000003f8de65c kobject: 'tx-0' (00000000908ae3f7): auto cleanup 'remove' event do_filp_open+0x1a1/0x280 fs/namei.c:3564 kobject: 'tx-0' (00000000908ae3f7): kobject_uevent_env kobject: 'tx-0' (00000000908ae3f7): kobject_uevent_env: uevent_suppress caused the event to drop! do_sys_open+0x3fe/0x550 fs/open.c:1088 kobject: 'tx-0' (00000000908ae3f7): auto cleanup kobject_del kobject: 'tx-0' (00000000908ae3f7): calling ktype release kobject: 'tx-0': free name ksys_open include/linux/syscalls.h:1276 [inline] __do_sys_creat fs/open.c:1146 [inline] __se_sys_creat fs/open.c:1144 [inline] __x64_sys_creat+0x61/0x80 fs/open.c:1144 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 kobject: 'queues' (000000003f8de65c): kobject_cleanup, parent (null) entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459a29 kobject: 'queues' (000000003f8de65c): calling ktype release Code: fd 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 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fb74a829c78 EFLAGS: 00000246 kobject: 'queues' (000000003f8de65c): kset_release ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 0000000000459a29 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000080 kobject: 'queues': free name RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb74a82a6d4 R13: 00000000004c0089 R14: 00000000004d2098 R15: 00000000ffffffff kobject: 'veth0_to_team' (00000000fdb8a76d): kobject_uevent_env Modules linked in: ---[ end trace aa5153f2916cce7f ]--- kobject: 'veth0_to_team' (00000000fdb8a76d): kobject_uevent_env: uevent_suppress caused the event to drop! RIP: 0010:mark_buffer_dirty_inode fs/buffer.c:553 [inline] RIP: 0010:mark_buffer_dirty_inode+0x30f/0x410 fs/buffer.c:544 kobject: 'bonding_slave' (0000000007d91c52): kobject_cleanup, parent 00000000496e13a4 Code: 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 75 4d 4c 89 63 58 4c 89 ef e8 2b 4d 3b 05 e9 ee fd ff ff e8 61 7b b2 ff <0f> 0b 4c 89 ff e8 d7 0e e9 ff e9 d3 fd ff ff e8 cd 0e e9 ff e9 5b kobject: 'bonding_slave' (0000000007d91c52): does not have a release() function, it is broken and must be fixed. RSP: 0018:ffff888045fff5c0 EFLAGS: 00010212 kobject: 'bonding_slave' (0000000007d91c52): auto cleanup kobject_del kobject: 'bonding_slave': free name RAX: 0000000000040000 RBX: ffff888040d4e000 RCX: ffffc90006078000 bond0 (unregistering): Releasing backup interface bond_slave_1 kobject: 'batman_adv' (00000000ca34ac38): kobject_uevent_env RDX: 00000000000228f3 RSI: ffffffff81b8e71f RDI: ffff888040d61470 kobject: 'batman_adv' (00000000ca34ac38): kobject_uevent_env: filter function caused the event to drop! RBP: ffff888045fff600 R08: ffff888056f24340 R09: 0000000000000004 kobject: 'batman_adv' (00000000ca34ac38): kobject_cleanup, parent (null) R10: ffffed1015d24732 R11: ffff8880ae923993 R12: ffff888040d61310 kobject: 'batman_adv' (00000000ca34ac38): calling ktype release R13: 0000000000000000 R14: ffff8880a6d61a58 R15: ffff88807d5ac300 kobject: (00000000ca34ac38): dynamic_kobj_release FS: 00007fb74a82a700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000022f8f40 CR3: 0000000085373000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400