====================================================== WARNING: possible circular locking dependency detected kobject: 'kvm' (0000000086f4ee97): kobject_uevent_env 4.19.38 #6 Not tainted ------------------------------------------------------ syz-executor.3/9515 is trying to acquire lock: 000000004dff1e9a (&acct->lock#2){+.+.}, at: acct_pin_kill+0x27/0x100 kernel/acct.c:173 but task is already holding lock: llc_conn_state_process: llc_conn_service failed 00000000a3e82d52 (sb_writers#4){.+.+}, at: sb_start_write include/linux/fs.h:1575 [inline] 00000000a3e82d52 (sb_writers#4){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:360 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (sb_writers#4 kobject: 'kvm' (0000000086f4ee97): fill_kobj_path: path = '/devices/virtual/misc/kvm' ){.+.+} kobject: 'kvm' (0000000086f4ee97): kobject_uevent_env : percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:36 [inline] percpu_down_read include/linux/percpu-rwsem.h:59 [inline] __sb_start_write+0x20b/0x360 fs/super.c:1387 sb_start_write include/linux/fs.h:1575 [inline] mnt_want_write+0x3f/0xc0 fs/namespace.c:360 kobject: 'kvm' (0000000086f4ee97): kobject_uevent_env ovl_want_write+0x76/0xa0 fs/overlayfs/util.c:24 ovl_link+0x7c/0x2d5 fs/overlayfs/dir.c:674 kobject: 'kvm' (0000000086f4ee97): fill_kobj_path: path = '/devices/virtual/misc/kvm' vfs_link+0x7a4/0xb60 fs/namei.c:4240 do_linkat+0x550/0x770 fs/namei.c:4308 __do_sys_link fs/namei.c:4337 [inline] __se_sys_link fs/namei.c:4335 [inline] __x64_sys_link+0x61/0x80 fs/namei.c:4335 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #1 kobject: 'kvm' (0000000086f4ee97): kobject_uevent_env (&ovl_i_mutex_key[depth]#2){+.+.}: down_write+0x38/0x90 kernel/locking/rwsem.c:70 inode_lock include/linux/fs.h:744 [inline] ovl_write_iter+0x148/0xc20 fs/overlayfs/file.c:231 call_write_iter include/linux/fs.h:1817 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x58e/0x820 fs/read_write.c:487 __kernel_write+0x110/0x390 fs/read_write.c:506 kobject: 'kvm' (0000000086f4ee97): fill_kobj_path: path = '/devices/virtual/misc/kvm' do_acct_process+0xd37/0x1150 kernel/acct.c:520 acct_pin_kill+0x2f/0x100 kernel/acct.c:174 pin_kill+0x18f/0x860 fs/fs_pin.c:50 acct_on+0x574/0x790 kernel/acct.c:254 kobject: 'kvm' (0000000086f4ee97): fill_kobj_path: path = '/devices/virtual/misc/kvm' __do_sys_acct kernel/acct.c:286 [inline] __se_sys_acct kernel/acct.c:273 [inline] __x64_sys_acct+0xae/0x200 kernel/acct.c:273 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 kobject: 'loop1' (0000000057748f93): kobject_uevent_env ( kobject: 'loop1' (0000000057748f93): fill_kobj_path: path = '/devices/virtual/block/loop1' &acct->lock#2){+.+.}: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0xf7/0x1300 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 acct_pin_kill+0x27/0x100 kernel/acct.c:173 pin_kill+0x18f/0x860 fs/fs_pin.c:50 kobject: 'loop2' (000000006f5d67ec): kobject_uevent_env acct_on+0x574/0x790 kernel/acct.c:254 __do_sys_acct kernel/acct.c:286 [inline] __se_sys_acct kernel/acct.c:273 [inline] __x64_sys_acct+0xae/0x200 kernel/acct.c:273 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 kobject: 'loop2' (000000006f5d67ec): fill_kobj_path: path = '/devices/virtual/block/loop2' entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Chain exists of: &acct->lock#2 --> &ovl_i_mutex_key[depth]#2 --> sb_writers#4 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(sb_writers#4); lock(&ovl_i_mutex_key[depth]#2); lock(sb_writers#4); kobject: 'loop4' (00000000561e9e82): kobject_uevent_env lock(&acct->lock#2); *** DEADLOCK *** 2 locks held by syz-executor.3/9515: #0: 0000000030484951 ( kobject: 'loop4' (00000000561e9e82): fill_kobj_path: path = '/devices/virtual/block/loop4' acct_on_mutex){+.+.}, at: __do_sys_acct kernel/acct.c:285 [inline] acct_on_mutex){+.+.}, at: __se_sys_acct kernel/acct.c:273 [inline] acct_on_mutex){+.+.}, at: __x64_sys_acct+0xa6/0x200 kernel/acct.c:273 #1: 00000000a3e82d52 (sb_writers#4){.+.+}, at: sb_start_write include/linux/fs.h:1575 [inline] #1: 00000000a3e82d52 (sb_writers#4){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:360 stack backtrace: CPU: 1 PID: 9515 Comm: syz-executor.3 Not tainted 4.19.38 #6 kobject: 'kvm' (0000000086f4ee97): kobject_uevent_env 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+0x172/0x1f0 lib/dump_stack.c:113 print_circular_bug.isra.0.cold+0x1cc/0x28f kernel/locking/lockdep.c:1221 check_prev_add kernel/locking/lockdep.c:1861 [inline] check_prevs_add kernel/locking/lockdep.c:1974 [inline] validate_chain kernel/locking/lockdep.c:2415 [inline] __lock_acquire+0x2e6d/0x48f0 kernel/locking/lockdep.c:3411 kobject: 'kvm' (0000000086f4ee97): fill_kobj_path: path = '/devices/virtual/misc/kvm' lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 kobject: 'kvm' (0000000086f4ee97): kobject_uevent_env __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0xf7/0x1300 kernel/locking/mutex.c:1072 kobject: 'kvm' (0000000086f4ee97): fill_kobj_path: path = '/devices/virtual/misc/kvm' llc_conn_state_process: llc_conn_service failed mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 acct_pin_kill+0x27/0x100 kernel/acct.c:173 pin_kill+0x18f/0x860 fs/fs_pin.c:50 kobject: 'kvm' (0000000086f4ee97): kobject_uevent_env acct_on+0x574/0x790 kernel/acct.c:254 __do_sys_acct kernel/acct.c:286 [inline] __se_sys_acct kernel/acct.c:273 [inline] __x64_sys_acct+0xae/0x200 kernel/acct.c:273 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe kobject: 'kvm' (0000000086f4ee97): fill_kobj_path: path = '/devices/virtual/misc/kvm' RIP: 0033:0x458da9 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:00007f985a99fc78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a3 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000458da9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040 RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f985a9a06d4 kobject: 'kvm' (0000000086f4ee97): kobject_uevent_env R13: 00000000004becd2 R14: 00000000004cfa50 R15: 00000000ffffffff Process accounting resumed bridge0: port 2(bridge_slave_1) entered disabled state kobject: 'kvm' (0000000086f4ee97): fill_kobj_path: path = '/devices/virtual/misc/kvm' bridge0: port 1(bridge_slave_0) entered disabled state kobject: 'loop4' (00000000561e9e82): kobject_uevent_env device bridge0 left promiscuous mode kobject: 'loop4' (00000000561e9e82): fill_kobj_path: path = '/devices/virtual/block/loop4' bridge0: port 2(bridge_slave_1) entered blocking state bridge0: port 2(bridge_slave_1) entered forwarding state bridge0: port 1(bridge_slave_0) entered blocking state bridge0: port 1(bridge_slave_0) entered forwarding state device bridge0 entered promiscuous mode bridge0: port 2(bridge_slave_1) entered blocking state bridge0: port 2(bridge_slave_1) entered forwarding state bridge0: port 1(bridge_slave_0) entered blocking state bridge0: port 1(bridge_slave_0) entered forwarding state kobject: 'loop3' (000000008eed035d): kobject_uevent_env device bridge0 entered promiscuous mode kobject: 'loop3' (000000008eed035d): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'kvm' (0000000086f4ee97): kobject_uevent_env kobject: 'kvm' (0000000086f4ee97): kobject_uevent_env kobject: 'kvm' (0000000086f4ee97): fill_kobj_path: path = '/devices/virtual/misc/kvm' IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready kobject: 'kvm' (0000000086f4ee97): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop5' (000000006195f5e3): kobject_uevent_env Process accounting resumed bridge0: port 2(bridge_slave_1) entered disabled state bridge0: port 1(bridge_slave_0) entered disabled state kobject: 'loop5' (000000006195f5e3): fill_kobj_path: path = '/devices/virtual/block/loop5' device bridge0 left promiscuous mode kobject: 'loop2' (000000006f5d67ec): kobject_uevent_env kobject: 'loop2' (000000006f5d67ec): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'kvm' (0000000086f4ee97): kobject_uevent_env kobject: 'loop0' (000000004d6a992d): kobject_uevent_env kobject: 'kvm' (0000000086f4ee97): kobject_uevent_env kobject: 'loop0' (000000004d6a992d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'kvm' (0000000086f4ee97): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (0000000086f4ee97): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop3' (000000008eed035d): kobject_uevent_env kobject: 'loop3' (000000008eed035d): fill_kobj_path: path = '/devices/virtual/block/loop3' Process accounting resumed kobject: 'loop4' (00000000561e9e82): kobject_uevent_env kobject: 'loop4' (00000000561e9e82): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'kvm' (0000000086f4ee97): kobject_uevent_env kobject: 'loop1' (0000000057748f93): kobject_uevent_env kobject: 'loop1' (0000000057748f93): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'kvm' (0000000086f4ee97): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (0000000086f4ee97): kobject_uevent_env kobject: 'kvm' (0000000086f4ee97): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop1' (0000000057748f93): kobject_uevent_env kobject: 'loop1' (0000000057748f93): fill_kobj_path: path = '/devices/virtual/block/loop1' bridge0: port 2(bridge_slave_1) entered blocking state bridge0: port 2(bridge_slave_1) entered forwarding state bridge0: port 1(bridge_slave_0) entered blocking state bridge0: port 1(bridge_slave_0) entered forwarding state device bridge0 entered promiscuous mode kobject: 'loop0' (000000004d6a992d): kobject_uevent_env kobject: 'loop0' (000000004d6a992d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000561e9e82): kobject_uevent_env kobject: 'loop4' (00000000561e9e82): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (000000006f5d67ec): kobject_uevent_env kobject: 'loop2' (000000006f5d67ec): fill_kobj_path: path = '/devices/virtual/block/loop2' bridge0: port 2(bridge_slave_1) entered disabled state bridge0: port 1(bridge_slave_0) entered disabled state device bridge0 left promiscuous mode kobject: 'loop3' (000000008eed035d): kobject_uevent_env kobject: 'loop3' (000000008eed035d): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (0000000057748f93): kobject_uevent_env kobject: 'loop1' (0000000057748f93): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (000000004d6a992d): kobject_uevent_env kobject: 'loop0' (000000004d6a992d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (000000006195f5e3): kobject_uevent_env kobject: 'loop5' (000000006195f5e3): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (000000006f5d67ec): kobject_uevent_env kobject: 'loop2' (000000006f5d67ec): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (000000008eed035d): kobject_uevent_env kobject: 'loop3' (000000008eed035d): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (000000004d6a992d): kobject_uevent_env kobject: 'loop0' (000000004d6a992d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (0000000057748f93): kobject_uevent_env kobject: 'loop1' (0000000057748f93): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (000000004d6a992d): kobject_uevent_env kobject: 'loop0' (000000004d6a992d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (0000000057748f93): kobject_uevent_env kobject: 'loop1' (0000000057748f93): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (000000004d6a992d): kobject_uevent_env kobject: 'loop0' (000000004d6a992d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000561e9e82): kobject_uevent_env kobject: 'loop4' (00000000561e9e82): fill_kobj_path: path = '/devices/virtual/block/loop4' bridge0: port 2(bridge_slave_1) entered blocking state bridge0: port 2(bridge_slave_1) entered forwarding state kobject: 'loop3' (000000008eed035d): kobject_uevent_env bridge0: port 1(bridge_slave_0) entered blocking state kobject: 'loop3' (000000008eed035d): fill_kobj_path: path = '/devices/virtual/block/loop3' bridge0: port 1(bridge_slave_0) entered forwarding state device bridge0 entered promiscuous mode IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready kobject: 'loop5' (000000006195f5e3): kobject_uevent_env kobject: 'loop5' (000000006195f5e3): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (000000004d6a992d): kobject_uevent_env kobject: 'loop0' (000000004d6a992d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000561e9e82): kobject_uevent_env kobject: 'loop4' (00000000561e9e82): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (000000008eed035d): kobject_uevent_env kobject: 'loop3' (000000008eed035d): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (000000006f5d67ec): kobject_uevent_env kobject: 'loop2' (000000006f5d67ec): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (000000004d6a992d): kobject_uevent_env kobject: 'loop0' (000000004d6a992d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (000000006f5d67ec): kobject_uevent_env kobject: 'loop2' (000000006f5d67ec): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (0000000057748f93): kobject_uevent_env kobject: 'loop1' (0000000057748f93): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (000000006195f5e3): kobject_uevent_env kobject: 'loop5' (000000006195f5e3): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (000000004d6a992d): kobject_uevent_env kobject: 'loop0' (000000004d6a992d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (000000006195f5e3): kobject_uevent_env kobject: 'loop5' (000000006195f5e3): fill_kobj_path: path = '/devices/virtual/block/loop5' net_ratelimit: 14 callbacks suppressed protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop2' (000000006f5d67ec): kobject_uevent_env kobject: 'loop2' (000000006f5d67ec): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (00000000561e9e82): kobject_uevent_env kobject: 'loop4' (00000000561e9e82): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (000000006195f5e3): kobject_uevent_env netlink: 20 bytes leftover after parsing attributes in process `syz-executor.1'. kobject: 'loop5' (000000006195f5e3): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (0000000057748f93): kobject_uevent_env kobject: 'loop1' (0000000057748f93): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (000000004d6a992d): kobject_uevent_env protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop0' (000000004d6a992d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (000000006195f5e3): kobject_uevent_env kobject: 'loop5' (000000006195f5e3): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (000000008eed035d): kobject_uevent_env kobject: 'loop3' (000000008eed035d): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (00000000561e9e82): kobject_uevent_env kobject: 'loop4' (00000000561e9e82): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000004d6a992d): kobject_uevent_env kobject: 'loop0' (000000004d6a992d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (000000006195f5e3): kobject_uevent_env kobject: 'loop5' (000000006195f5e3): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (000000008eed035d): kobject_uevent_env kobject: 'loop3' (000000008eed035d): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (0000000057748f93): kobject_uevent_env kobject: 'loop1' (0000000057748f93): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (000000004d6a992d): kobject_uevent_env kobject: 'loop0' (000000004d6a992d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (000000006195f5e3): kobject_uevent_env kobject: 'loop5' (000000006195f5e3): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (00000000561e9e82): kobject_uevent_env kobject: 'loop4' (00000000561e9e82): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (0000000057748f93): kobject_uevent_env kobject: 'loop1' (0000000057748f93): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (000000006195f5e3): kobject_uevent_env kobject: 'loop5' (000000006195f5e3): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (000000006f5d67ec): kobject_uevent_env kobject: 'loop2' (000000006f5d67ec): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (00000000561e9e82): kobject_uevent_env kobject: 'loop4' (00000000561e9e82): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (000000006195f5e3): kobject_uevent_env kobject: 'loop5' (000000006195f5e3): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (0000000057748f93): kobject_uevent_env kobject: 'loop1' (0000000057748f93): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (000000006f5d67ec): kobject_uevent_env kobject: 'loop2' (000000006f5d67ec): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (00000000561e9e82): kobject_uevent_env kobject: 'loop4' (00000000561e9e82): fill_kobj_path: path = '/devices/virtual/block/loop4' protocol 88fb is buggy, dev hsr_slave_0 kobject: 'loop2' (000000006f5d67ec): kobject_uevent_env protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop2' (000000006f5d67ec): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (000000006195f5e3): kobject_uevent_env kobject: 'loop5' (000000006195f5e3): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (000000008eed035d): kobject_uevent_env netlink: 20 bytes leftover after parsing attributes in process `syz-executor.1'. kobject: 'loop3' (000000008eed035d): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (000000004d6a992d): kobject_uevent_env kobject: 'loop0' (000000004d6a992d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000561e9e82): kobject_uevent_env kobject: 'loop4' (00000000561e9e82): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (000000006f5d67ec): kobject_uevent_env FS-Cache: Duplicate cookie detected FS-Cache: O-cookie c=00000000916c941c [p=00000000ed762222 fl=222 nc=0 na=1] FS-Cache: O-cookie d=00000000b6db8118 n=0000000059e93d2e FS-Cache: O-key=[10] '0200020000807f000008' FS-Cache: N-cookie c=0000000006d76da8 [p=00000000ed762222 fl=2 nc=0 na=1] FS-Cache: N-cookie d=00000000b6db8118 n=000000003f6de785 FS-Cache: N-key=[10] '0200020000807f000008' kobject: 'loop2' (000000006f5d67ec): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (0000000057748f93): kobject_uevent_env FS-Cache: Duplicate cookie detected kobject: 'loop1' (0000000057748f93): fill_kobj_path: path = '/devices/virtual/block/loop1' FS-Cache: O-cookie c=00000000916c941c [p=00000000ed762222 fl=222 nc=0 na=1] kobject: 'loop5' (000000006195f5e3): kobject_uevent_env FS-Cache: O-cookie d=00000000b6db8118 n=0000000059e93d2e FS-Cache: O-key=[10] '020002 kobject: 'loop5' (000000006195f5e3): fill_kobj_path: path = '/devices/virtual/block/loop5' 0000807f000008' FS-Cache: N-cookie c=000000002c794b29 [p=00000000ed762222 fl=2 nc=0 na=1] FS-Cache: N-cookie d=00000000b6db8118 n=0000000053fd0887 kobject: 'loop2' (000000006f5d67ec): kobject_uevent_env FS-Cache: N-key=[10] ' kobject: 'loop2' (000000006f5d67ec): fill_kobj_path: path = '/devices/virtual/block/loop2' 0200020000807f000008' protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop3' (000000008eed035d): kobject_uevent_env netlink: 20 bytes leftover after parsing attributes in process `syz-executor.1'. kobject: 'loop3' (000000008eed035d): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (000000004d6a992d): kobject_uevent_env kobject: 'loop0' (000000004d6a992d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (000000006f5d67ec): kobject_uevent_env kobject: 'loop2' (000000006f5d67ec): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (0000000057748f93): kobject_uevent_env kobject: 'loop1' (0000000057748f93): fill_kobj_path: path = '/devices/virtual/block/loop1' netlink: 20 bytes leftover after parsing attributes in process `syz-executor.1'. kobject: 'loop1' (0000000057748f93): kobject_uevent_env kobject: 'loop1' (0000000057748f93): fill_kobj_path: path = '/devices/virtual/block/loop1' SELinux: policydb string SELinux does not match my string SE Linux kobject: 'loop4' (00000000561e9e82): kobject_uevent_env SELinux: failed to load policy kobject: 'loop4' (00000000561e9e82): fill_kobj_path: path = '/devices/virtual/block/loop4' FS-Cache: Duplicate cookie detected FS-Cache: O-cookie c=00000000d2aa8071 [p=00000000ed762222 fl=222 nc=0 na=1] FS-Cache: O-cookie d=00000000b6db8118 n=00000000136a17f6 FS-Cache: O-key=[10] '0200020000807f000008' FS-Cache: N-cookie c=000000002bf805de [p=00000000ed762222 fl=2 nc=0 na=1] SELinux: policydb string SELinux does not match my string SE Linux FS-Cache: N-cookie d=00000000b6db8118 n=00000000abcd6a10 FS-Cache: N-key=[10] '0200020000807f000008' kobject: 'loop0' (000000004d6a992d): kobject_uevent_env SELinux: failed to load policy FS-Cache: Duplicate cookie detected FS-Cache: O-cookie c=00000000d2aa8071 [p=00000000ed762222 fl=222 nc=0 na=1] FS-Cache: O-cookie d=00000000b6db8118 n=00000000136a17f6 FS-Cache: O-key=[10] '0200020000807f000008' FS-Cache: N-cookie c=00000000b220ed45 [p=00000000ed762222 fl=2 nc=0 na=1] kobject: 'loop0' (000000004d6a992d): fill_kobj_path: path = '/devices/virtual/block/loop0' FS-Cache: N-cookie d=00000000b6db8118 n=0000000094ff5a1e FS-Cache: N-key=[10] '0200020000807f000008' kobject: 'loop5' (000000006195f5e3): kobject_uevent_env kobject: 'loop5' (000000006195f5e3): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (0000000057748f93): kobject_uevent_env kobject: 'loop1' (0000000057748f93): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (000000006f5d67ec): kobject_uevent_env kobject: 'loop2' (000000006f5d67ec): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (000000004d6a992d): kobject_uevent_env kobject: 'loop0' (000000004d6a992d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (0000000057748f93): kobject_uevent_env kobject: 'loop1' (0000000057748f93): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (000000008eed035d): kobject_uevent_env kobject: 'loop3' (000000008eed035d): fill_kobj_path: path = '/devices/virtual/block/loop3' SELinux: policydb string SELinux does not match my string SE Linux SELinux: failed to load policy kobject: 'loop2' (000000006f5d67ec): kobject_uevent_env kobject: 'loop2' (000000006f5d67ec): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (000000004d6a992d): kobject_uevent_env kobject: 'loop0' (000000004d6a992d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (000000006f5d67ec): kobject_uevent_env kobject: 'loop2' (000000006f5d67ec): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (0000000057748f93): kobject_uevent_env kobject: 'loop1' (0000000057748f93): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000561e9e82): kobject_uevent_env kobject: 'loop4' (00000000561e9e82): fill_kobj_path: path = '/devices/virtual/block/loop4' SELinux: policydb string SELinux does not match my string SE Linux FS-Cache: Duplicate cookie detected SELinux: failed to load policy FS-Cache: O-cookie c=00000000d6cf86c9 [p=00000000ed762222 fl=222 nc=0 na=1] FS-Cache: O-cookie d=00000000b6db8118 n=00000000a886a422 FS-Cache: O-key=[10] '0200020000807f000008' FS-Cache: N-cookie c=00000000f5da591b [p=00000000ed762222 fl=2 nc=0 na=1] FS-Cache: N-cookie d=00000000b6db8118 n=000000005c0333f6 FS-Cache: N-key=[10] '0200020000807f000008' kobject: 'loop1' (0000000057748f93): kobject_uevent_env kobject: 'loop1' (0000000057748f93): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (000000006195f5e3): kobject_uevent_env kobject: 'loop5' (000000006195f5e3): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (000000004d6a992d): kobject_uevent_env FS-Cache: Duplicate cookie detected kobject: 'loop0' (000000004d6a992d): fill_kobj_path: path = '/devices/virtual/block/loop0' FS-Cache: O-cookie c=00000000d6cf86c9 [p=00000000ed762222 fl=222 nc=0 na=1] FS-Cache: O-cookie d=00000000b6db8118 n=00000000a886a422 FS-Cache: O-key=[10] '0200020000807f000008' FS-Cache: N-cookie c=00000000ee7c178b [p=00000000ed762222 fl=2 nc=0 na=1] FS-Cache: N-cookie d=00000000b6db8118 n=0000000083e62cb1 FS-Cache: N-key=[10] '0200020000807f000008' kobject: 'loop1' (0000000057748f93): kobject_uevent_env kobject: 'loop1' (0000000057748f93): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (000000006f5d67ec): kobject_uevent_env kobject: 'loop2' (000000006f5d67ec): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (000000008eed035d): kobject_uevent_env kobject: 'loop3' (000000008eed035d): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (000000004d6a992d): kobject_uevent_env kobject: 'loop0' (000000004d6a992d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (0000000057748f93): kobject_uevent_env kobject: 'loop1' (0000000057748f93): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (000000004d6a992d): kobject_uevent_env kobject: 'loop0' (000000004d6a992d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (0000000057748f93): kobject_uevent_env kobject: 'loop1' (0000000057748f93): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000561e9e82): kobject_uevent_env kobject: 'loop4' (00000000561e9e82): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000004d6a992d): kobject_uevent_env kobject: 'loop0' (000000004d6a992d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (0000000057748f93): kobject_uevent_env kobject: 'loop1' (0000000057748f93): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (000000006195f5e3): kobject_uevent_env kobject: 'loop5' (000000006195f5e3): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (00000000561e9e82): kobject_uevent_env kobject: 'loop4' (00000000561e9e82): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000004d6a992d): kobject_uevent_env kobject: 'loop0' (000000004d6a992d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (0000000057748f93): kobject_uevent_env kobject: 'loop1' (0000000057748f93): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (000000006195f5e3): kobject_uevent_env kobject: 'loop5' (000000006195f5e3): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (00000000561e9e82): kobject_uevent_env kobject: 'loop4' (00000000561e9e82): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (000000006f5d67ec): kobject_uevent_env kobject: 'loop2' (000000006f5d67ec): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (000000008eed035d): kobject_uevent_env kobject: 'loop3' (000000008eed035d): fill_kobj_path: path = '/devices/virtual/block/loop3' syz-executor.2 invoked oom-killer: gfp_mask=0x7080c0(GFP_KERNEL_ACCOUNT|__GFP_ZERO), nodemask=(null), order=0, oom_score_adj=1000 syz-executor.2 cpuset=syz2 mems_allowed=0-1 CPU: 0 PID: 10913 Comm: syz-executor.2 Not tainted 4.19.38 #6 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+0x172/0x1f0 lib/dump_stack.c:113 dump_header+0x15e/0x929 mm/oom_kill.c:441 oom_kill_process.cold+0x10/0x6f5 mm/oom_kill.c:954 out_of_memory mm/oom_kill.c:1129 [inline] out_of_memory+0x936/0x12d0 mm/oom_kill.c:1062 mem_cgroup_out_of_memory+0x1d2/0x240 mm/memcontrol.c:1397 kobject: 'loop4' (00000000561e9e82): kobject_uevent_env mem_cgroup_oom mm/memcontrol.c:1723 [inline] try_charge+0x1028/0x15b0 mm/memcontrol.c:2285 kobject: 'loop4' (00000000561e9e82): fill_kobj_path: path = '/devices/virtual/block/loop4' memcg_kmem_charge_memcg+0x7c/0x130 mm/memcontrol.c:2615 memcg_kmem_charge+0x136/0x300 mm/memcontrol.c:2648 __alloc_pages_nodemask+0x3c6/0x760 mm/page_alloc.c:4413 cgroup: fork rejected by pids controller in /syz3 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147 alloc_pages include/linux/gfp.h:509 [inline] pte_alloc_one+0x1b/0x1a0 arch/x86/mm/pgtable.c:35 __pte_alloc+0x2a/0x360 mm/memory.c:653 copy_pte_range mm/memory.c:1077 [inline] copy_pmd_range mm/memory.c:1153 [inline] copy_pud_range mm/memory.c:1187 [inline] copy_p4d_range mm/memory.c:1209 [inline] copy_page_range+0x151f/0x1f90 mm/memory.c:1271 dup_mmap kernel/fork.c:544 [inline] dup_mm kernel/fork.c:1274 [inline] copy_mm kernel/fork.c:1329 [inline] copy_process.part.0+0x5434/0x7970 kernel/fork.c:1867 copy_process kernel/fork.c:1664 [inline] _do_fork+0x257/0xfe0 kernel/fork.c:2175 __do_sys_clone kernel/fork.c:2282 [inline] __se_sys_clone kernel/fork.c:2276 [inline] __x64_sys_clone+0xbf/0x150 kernel/fork.c:2276 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x458da9 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:00007fdc36380c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000458da9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 000000000073bfa0 R08: 0000000020000480 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fdc363816d4 R13: 00000000004bf166 R14: 00000000004d01a0 R15: 00000000ffffffff kobject: 'loop4' (00000000561e9e82): kobject_uevent_env Task in /syz2 killed as a result of limit of /syz2 memory: usage 307200kB, limit 307200kB, failcnt 22 kobject: 'loop4' (00000000561e9e82): fill_kobj_path: path = '/devices/virtual/block/loop4' memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0 kmem: usage 0kB, limit 9007199254740988kB, failcnt 0 Memory cgroup stats for /syz2: cache:80KB rss:281536KB rss_huge:262144KB shmem:48KB mapped_file:0KB dirty:0KB writeback:0KB swap:0KB inactive_anon:48208KB active_anon:172784KB inactive_file:0KB active_file:0KB unevictable:60588KB kobject: 'loop1' (0000000057748f93): kobject_uevent_env kobject: 'loop1' (0000000057748f93): fill_kobj_path: path = '/devices/virtual/block/loop1' Memory cgroup out of memory: Kill process 11094 (syz-executor.2) score 1226 or sacrifice child Killed process 11095 (syz-executor.2) total-vm:72452kB, anon-rss:18048kB, file-rss:54324kB, shmem-rss:0kB kobject: 'loop0' (000000004d6a992d): kobject_uevent_env kobject: 'loop0' (000000004d6a992d): fill_kobj_path: path = '/devices/virtual/block/loop0' syz-executor.2 invoked oom-killer: gfp_mask=0x7080c0(GFP_KERNEL_ACCOUNT|__GFP_ZERO), nodemask=(null), order=0, oom_score_adj=1000 kobject: 'loop1' (0000000057748f93): kobject_uevent_env kobject: 'loop1' (0000000057748f93): fill_kobj_path: path = '/devices/virtual/block/loop1' syz-executor.2 cpuset=syz2 mems_allowed=0-1 kobject: 'loop4' (00000000561e9e82): kobject_uevent_env CPU: 0 PID: 10913 Comm: syz-executor.2 Not tainted 4.19.38 #6 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 kobject: 'loop4' (00000000561e9e82): fill_kobj_path: path = '/devices/virtual/block/loop4' Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 dump_header+0x15e/0x929 mm/oom_kill.c:441 oom_kill_process.cold+0x10/0x6f5 mm/oom_kill.c:954 out_of_memory mm/oom_kill.c:1129 [inline] out_of_memory+0x936/0x12d0 mm/oom_kill.c:1062 mem_cgroup_out_of_memory+0x1d2/0x240 mm/memcontrol.c:1397 kobject: 'loop0' (000000004d6a992d): kobject_uevent_env kobject: 'loop0' (000000004d6a992d): fill_kobj_path: path = '/devices/virtual/block/loop0' mem_cgroup_oom mm/memcontrol.c:1723 [inline] try_charge+0x1028/0x15b0 mm/memcontrol.c:2285 kobject: 'loop5' (000000006195f5e3): kobject_uevent_env memcg_kmem_charge_memcg+0x7c/0x130 mm/memcontrol.c:2615 memcg_kmem_charge+0x136/0x300 mm/memcontrol.c:2648 kobject: 'loop5' (000000006195f5e3): fill_kobj_path: path = '/devices/virtual/block/loop5' __alloc_pages_nodemask+0x3c6/0x760 mm/page_alloc.c:4413 kobject: 'loop3' (000000008eed035d): kobject_uevent_env kobject: 'loop3' (000000008eed035d): fill_kobj_path: path = '/devices/virtual/block/loop3' alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147 alloc_pages include/linux/gfp.h:509 [inline] pte_alloc_one+0x1b/0x1a0 arch/x86/mm/pgtable.c:35 __pte_alloc+0x2a/0x360 mm/memory.c:653 copy_pte_range mm/memory.c:1077 [inline] copy_pmd_range mm/memory.c:1153 [inline] copy_pud_range mm/memory.c:1187 [inline] copy_p4d_range mm/memory.c:1209 [inline] copy_page_range+0x151f/0x1f90 mm/memory.c:1271 dup_mmap kernel/fork.c:544 [inline] dup_mm kernel/fork.c:1274 [inline] copy_mm kernel/fork.c:1329 [inline] copy_process.part.0+0x5434/0x7970 kernel/fork.c:1867 copy_process kernel/fork.c:1664 [inline] _do_fork+0x257/0xfe0 kernel/fork.c:2175 __do_sys_clone kernel/fork.c:2282 [inline] __se_sys_clone kernel/fork.c:2276 [inline] __x64_sys_clone+0xbf/0x150 kernel/fork.c:2276 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x458da9 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:00007fdc36380c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000458da9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 000000000073bfa0 R08: 0000000020000480 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fdc363816d4 R13: 00000000004bf166 R14: 00000000004d01a0 R15: 00000000ffffffff Task in /syz2 killed as a result of limit of /syz2 kobject: 'loop4' (00000000561e9e82): kobject_uevent_env memory: usage 307200kB, limit 307200kB, failcnt 28 kobject: 'loop4' (00000000561e9e82): fill_kobj_path: path = '/devices/virtual/block/loop4' memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0 kmem: usage 0kB, limit 9007199254740988kB, failcnt 0 Memory cgroup stats for /syz2: cache:80KB rss:281536KB rss_huge:262144KB shmem:48KB mapped_file:0KB dirty:0KB writeback:0KB swap:0KB inactive_anon:66052KB active_anon:172784KB inactive_file:0KB active_file:0KB unevictable:42744KB Memory cgroup out of memory: Kill process 11094 (syz-executor.2) score 1226 or sacrifice child Killed process 11094 (syz-executor.2) total-vm:72584kB, anon-rss:18236kB, file-rss:54324kB, shmem-rss:0kB syz-executor.2 invoked oom-killer: gfp_mask=0x7080c0(GFP_KERNEL_ACCOUNT|__GFP_ZERO), nodemask=(null), order=0, oom_score_adj=1000 net_ratelimit: 16 callbacks suppressed protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 syz-executor.2 cpuset=syz2 mems_allowed=0-1 CPU: 0 PID: 10913 Comm: syz-executor.2 Not tainted 4.19.38 #6 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+0x172/0x1f0 lib/dump_stack.c:113 dump_header+0x15e/0x929 mm/oom_kill.c:441 oom_kill_process.cold+0x10/0x6f5 mm/oom_kill.c:954 out_of_memory mm/oom_kill.c:1129 [inline] out_of_memory+0x936/0x12d0 mm/oom_kill.c:1062 mem_cgroup_out_of_memory+0x1d2/0x240 mm/memcontrol.c:1397 mem_cgroup_oom mm/memcontrol.c:1723 [inline] try_charge+0x1028/0x15b0 mm/memcontrol.c:2285 memcg_kmem_charge_memcg+0x7c/0x130 mm/memcontrol.c:2615 memcg_kmem_charge+0x136/0x300 mm/memcontrol.c:2648 __alloc_pages_nodemask+0x3c6/0x760 mm/page_alloc.c:4413 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147 alloc_pages include/linux/gfp.h:509 [inline] pte_alloc_one+0x1b/0x1a0 arch/x86/mm/pgtable.c:35 __pte_alloc+0x2a/0x360 mm/memory.c:653 copy_pte_range mm/memory.c:1077 [inline] copy_pmd_range mm/memory.c:1153 [inline] copy_pud_range mm/memory.c:1187 [inline] copy_p4d_range mm/memory.c:1209 [inline] copy_page_range+0x151f/0x1f90 mm/memory.c:1271 dup_mmap kernel/fork.c:544 [inline] dup_mm kernel/fork.c:1274 [inline] copy_mm kernel/fork.c:1329 [inline] copy_process.part.0+0x5434/0x7970 kernel/fork.c:1867 copy_process kernel/fork.c:1664 [inline] _do_fork+0x257/0xfe0 kernel/fork.c:2175 __do_sys_clone kernel/fork.c:2282 [inline] __se_sys_clone kernel/fork.c:2276 [inline] __x64_sys_clone+0xbf/0x150 kernel/fork.c:2276 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x458da9 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:00007fdc36380c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000458da9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 000000000073bfa0 R08: 0000000020000480 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fdc363816d4 R13: 00000000004bf166 R14: 00000000004d01a0 R15: 00000000ffffffff protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 Task in /syz2 killed as a result of limit of /syz2 memory: usage 270412kB, limit 307200kB, failcnt 34 memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0 kmem: usage 0kB, limit 9007199254740988kB, failcnt 0 Memory cgroup stats for /syz2: cache:80KB rss:245264KB rss_huge:229376KB shmem:48KB mapped_file:0KB dirty:0KB writeback:0KB swap:0KB inactive_anon:48208KB active_anon:172784KB inactive_file:0KB active_file:0KB unevictable:24248KB Memory cgroup out of memory: Kill process 11139 (syz-executor.2) score 1225 or sacrifice child Killed process 11139 (syz-executor.2) total-vm:72452kB, anon-rss:18052kB, file-rss:54324kB, shmem-rss:0kB kobject: 'loop2' (000000006f5d67ec): kobject_uevent_env kobject: 'loop2' (000000006f5d67ec): fill_kobj_path: path = '/devices/virtual/block/loop2' protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop4' (00000000561e9e82): kobject_uevent_env kobject: 'loop4' (00000000561e9e82): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (0000000057748f93): kobject_uevent_env kobject: 'loop1' (0000000057748f93): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (000000004d6a992d): kobject_uevent_env kobject: 'loop0' (000000004d6a992d): fill_kobj_path: path = '/devices/virtual/block/loop0' protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop1' (0000000057748f93): kobject_uevent_env kobject: 'loop1' (0000000057748f93): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000561e9e82): kobject_uevent_env kobject: 'loop4' (00000000561e9e82): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000004d6a992d): kobject_uevent_env kobject: 'loop0' (000000004d6a992d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (000000006f5d67ec): kobject_uevent_env kobject: 'loop2' (000000006f5d67ec): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (0000000057748f93): kobject_uevent_env kobject: 'loop1' (0000000057748f93): fill_kobj_path: path = '/devices/virtual/block/loop1'