bisecting fixing commit since c98875d930e915d01e8c40c7d3c16f00b3c8abe1 building syzkaller on 53199d6e8aee5f0ebd3775d2b1c674f4e6e64e2b testing commit c98875d930e915d01e8c40c7d3c16f00b3c8abe1 with gcc (GCC) 8.1.0 kernel signature: 56211a2169495e4fb95dd8cd9057739543aec837f1bd6cd90afc9ece6300dfe6 all runs: crashed: INFO: task hung in aead_recvmsg testing current HEAD 13d2ce42de8cb98ff952f8de6307f896203854c2 testing commit 13d2ce42de8cb98ff952f8de6307f896203854c2 with gcc (GCC) 8.1.0 kernel signature: 831d1d0616dcd8a33e4636d75bcaf12ff1db6e1cba46787a272e6299bad32ec0 all runs: crashed: INFO: task hung in aead_recvmsg revisions tested: 2, total time: 30m59.381817857s (build: 16m59.863368562s, test: 13m18.147761622s) the crash still happens on HEAD commit msg: Linux 4.19.163 crash: INFO: task hung in aead_recvmsg IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready 8021q: adding VLAN 0 to HW filter on device batadv0 IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready 8021q: adding VLAN 0 to HW filter on device batadv0 INFO: task syz-executor.5:6788 blocked for more than 140 seconds. Not tainted 4.19.163-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D26920 6788 5672 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x792/0x1c20 kernel/sched/core.c:3517 schedule+0x7f/0x1b0 kernel/sched/core.c:3561 schedule_timeout+0x6e3/0xe00 kernel/time/timer.c:1794 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common kernel/sched/completion.c:115 [inline] wait_for_completion+0x282/0x460 kernel/sched/completion.c:136 crypto_wait_req include/linux/crypto.h:517 [inline] _aead_recvmsg crypto/algif_aead.c:314 [inline] aead_recvmsg+0x1144/0x1fb0 crypto/algif_aead.c:335 sock_recvmsg_nosec net/socket.c:795 [inline] sock_recvmsg+0xb9/0xf0 net/socket.c:802 sock_read_iter+0x252/0x430 net/socket.c:879 call_read_iter include/linux/fs.h:1815 [inline] do_iter_readv_writev+0x3f2/0x960 fs/read_write.c:679 do_iter_read+0x1db/0x580 fs/read_write.c:923 vfs_readv+0xc9/0x130 fs/read_write.c:987 do_readv+0x110/0x330 fs/read_write.c:1020 __do_sys_readv fs/read_write.c:1107 [inline] __se_sys_readv fs/read_write.c:1104 [inline] __x64_sys_readv+0x70/0xb0 fs/read_write.c:1104 do_syscall_64+0xd6/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x458ca9 Code: Bad RIP value. RSP: 002b:00007ff9deb57c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000013 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458ca9 RDX: 0000000000000001 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff9deb586d4 R13: 00000000004c5a05 R14: 00000000004da060 R15: 00000000ffffffff INFO: task syz-executor.5:6804 blocked for more than 140 seconds. Not tainted 4.19.163-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D26632 6804 5672 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x792/0x1c20 kernel/sched/core.c:3517 schedule+0x7f/0x1b0 kernel/sched/core.c:3561 schedule_timeout+0x6e3/0xe00 kernel/time/timer.c:1794 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common kernel/sched/completion.c:115 [inline] wait_for_completion+0x282/0x460 kernel/sched/completion.c:136 crypto_wait_req include/linux/crypto.h:517 [inline] _aead_recvmsg crypto/algif_aead.c:314 [inline] aead_recvmsg+0x1144/0x1fb0 crypto/algif_aead.c:335 sock_recvmsg_nosec net/socket.c:795 [inline] sock_recvmsg+0xb9/0xf0 net/socket.c:802 sock_read_iter+0x252/0x430 net/socket.c:879 call_read_iter include/linux/fs.h:1815 [inline] do_iter_readv_writev+0x3f2/0x960 fs/read_write.c:679 do_iter_read+0x1db/0x580 fs/read_write.c:923 vfs_readv+0xc9/0x130 fs/read_write.c:987 do_readv+0x110/0x330 fs/read_write.c:1020 __do_sys_readv fs/read_write.c:1107 [inline] __se_sys_readv fs/read_write.c:1104 [inline] __x64_sys_readv+0x70/0xb0 fs/read_write.c:1104 do_syscall_64+0xd6/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x458ca9 Code: Bad RIP value. RSP: 002b:00007ff9deb36c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000013 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458ca9 RDX: 0000000000000001 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff9deb376d4 R13: 00000000004c5a05 R14: 00000000004da060 R15: 00000000ffffffff INFO: task syz-executor.3:6794 blocked for more than 140 seconds. Not tainted 4.19.163-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D26920 6794 5670 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x792/0x1c20 kernel/sched/core.c:3517 schedule+0x7f/0x1b0 kernel/sched/core.c:3561 schedule_timeout+0x6e3/0xe00 kernel/time/timer.c:1794 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common kernel/sched/completion.c:115 [inline] wait_for_completion+0x282/0x460 kernel/sched/completion.c:136 crypto_wait_req include/linux/crypto.h:517 [inline] _aead_recvmsg crypto/algif_aead.c:314 [inline] aead_recvmsg+0x1144/0x1fb0 crypto/algif_aead.c:335 sock_recvmsg_nosec net/socket.c:795 [inline] sock_recvmsg+0xb9/0xf0 net/socket.c:802 sock_read_iter+0x252/0x430 net/socket.c:879 call_read_iter include/linux/fs.h:1815 [inline] do_iter_readv_writev+0x3f2/0x960 fs/read_write.c:679 do_iter_read+0x1db/0x580 fs/read_write.c:923 vfs_readv+0xc9/0x130 fs/read_write.c:987 do_readv+0x110/0x330 fs/read_write.c:1020 __do_sys_readv fs/read_write.c:1107 [inline] __se_sys_readv fs/read_write.c:1104 [inline] __x64_sys_readv+0x70/0xb0 fs/read_write.c:1104 do_syscall_64+0xd6/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x458ca9 Code: Bad RIP value. RSP: 002b:00007f62c0bfac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000013 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458ca9 RDX: 0000000000000001 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f62c0bfb6d4 R13: 00000000004c5a05 R14: 00000000004da060 R15: 00000000ffffffff INFO: task syz-executor.1:6802 blocked for more than 140 seconds. Not tainted 4.19.163-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D26920 6802 5679 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x792/0x1c20 kernel/sched/core.c:3517 schedule+0x7f/0x1b0 kernel/sched/core.c:3561 schedule_timeout+0x6e3/0xe00 kernel/time/timer.c:1794 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common kernel/sched/completion.c:115 [inline] wait_for_completion+0x282/0x460 kernel/sched/completion.c:136 crypto_wait_req include/linux/crypto.h:517 [inline] _aead_recvmsg crypto/algif_aead.c:314 [inline] aead_recvmsg+0x1144/0x1fb0 crypto/algif_aead.c:335 sock_recvmsg_nosec net/socket.c:795 [inline] sock_recvmsg+0xb9/0xf0 net/socket.c:802 sock_read_iter+0x252/0x430 net/socket.c:879 call_read_iter include/linux/fs.h:1815 [inline] do_iter_readv_writev+0x3f2/0x960 fs/read_write.c:679 do_iter_read+0x1db/0x580 fs/read_write.c:923 vfs_readv+0xc9/0x130 fs/read_write.c:987 do_readv+0x110/0x330 fs/read_write.c:1020 __do_sys_readv fs/read_write.c:1107 [inline] __se_sys_readv fs/read_write.c:1104 [inline] __x64_sys_readv+0x70/0xb0 fs/read_write.c:1104 do_syscall_64+0xd6/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x458ca9 Code: Bad RIP value. RSP: 002b:00007fa34b2e0c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000013 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458ca9 RDX: 0000000000000001 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa34b2e16d4 R13: 00000000004c5a05 R14: 00000000004da060 R15: 00000000ffffffff INFO: task syz-executor.1:6815 blocked for more than 140 seconds. Not tainted 4.19.163-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D26824 6815 5679 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x792/0x1c20 kernel/sched/core.c:3517 schedule+0x7f/0x1b0 kernel/sched/core.c:3561 schedule_timeout+0x6e3/0xe00 kernel/time/timer.c:1794 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common kernel/sched/completion.c:115 [inline] wait_for_completion+0x282/0x460 kernel/sched/completion.c:136 crypto_wait_req include/linux/crypto.h:517 [inline] _aead_recvmsg crypto/algif_aead.c:314 [inline] aead_recvmsg+0x1144/0x1fb0 crypto/algif_aead.c:335 sock_recvmsg_nosec net/socket.c:795 [inline] sock_recvmsg+0xb9/0xf0 net/socket.c:802 sock_read_iter+0x252/0x430 net/socket.c:879 call_read_iter include/linux/fs.h:1815 [inline] do_iter_readv_writev+0x3f2/0x960 fs/read_write.c:679 do_iter_read+0x1db/0x580 fs/read_write.c:923 vfs_readv+0xc9/0x130 fs/read_write.c:987 do_readv+0x110/0x330 fs/read_write.c:1020 __do_sys_readv fs/read_write.c:1107 [inline] __se_sys_readv fs/read_write.c:1104 [inline] __x64_sys_readv+0x70/0xb0 fs/read_write.c:1104 do_syscall_64+0xd6/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x458ca9 Code: Bad RIP value. RSP: 002b:00007fa34b2bfc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000013 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458ca9 RDX: 0000000000000001 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa34b2c06d4 R13: 00000000004c5a05 R14: 00000000004da060 R15: 00000000ffffffff INFO: task syz-executor.2:6800 blocked for more than 140 seconds. Not tainted 4.19.163-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D26920 6800 5668 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x792/0x1c20 kernel/sched/core.c:3517 schedule+0x7f/0x1b0 kernel/sched/core.c:3561 schedule_timeout+0x6e3/0xe00 kernel/time/timer.c:1794 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common kernel/sched/completion.c:115 [inline] wait_for_completion+0x282/0x460 kernel/sched/completion.c:136 crypto_wait_req include/linux/crypto.h:517 [inline] _aead_recvmsg crypto/algif_aead.c:314 [inline] aead_recvmsg+0x1144/0x1fb0 crypto/algif_aead.c:335 sock_recvmsg_nosec net/socket.c:795 [inline] sock_recvmsg+0xb9/0xf0 net/socket.c:802 sock_read_iter+0x252/0x430 net/socket.c:879 call_read_iter include/linux/fs.h:1815 [inline] do_iter_readv_writev+0x3f2/0x960 fs/read_write.c:679 do_iter_read+0x1db/0x580 fs/read_write.c:923 vfs_readv+0xc9/0x130 fs/read_write.c:987 do_readv+0x110/0x330 fs/read_write.c:1020 __do_sys_readv fs/read_write.c:1107 [inline] __se_sys_readv fs/read_write.c:1104 [inline] __x64_sys_readv+0x70/0xb0 fs/read_write.c:1104 do_syscall_64+0xd6/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x458ca9 Code: Bad RIP value. RSP: 002b:00007fe5d74b0c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000013 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458ca9 RDX: 0000000000000001 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe5d74b16d4 R13: 00000000004c5a05 R14: 00000000004da060 R15: 00000000ffffffff INFO: task syz-executor.2:6816 blocked for more than 140 seconds. Not tainted 4.19.163-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D26824 6816 5668 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x792/0x1c20 kernel/sched/core.c:3517 schedule+0x7f/0x1b0 kernel/sched/core.c:3561 schedule_timeout+0x6e3/0xe00 kernel/time/timer.c:1794 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common kernel/sched/completion.c:115 [inline] wait_for_completion+0x282/0x460 kernel/sched/completion.c:136 crypto_wait_req include/linux/crypto.h:517 [inline] _aead_recvmsg crypto/algif_aead.c:314 [inline] aead_recvmsg+0x1144/0x1fb0 crypto/algif_aead.c:335 sock_recvmsg_nosec net/socket.c:795 [inline] sock_recvmsg+0xb9/0xf0 net/socket.c:802 sock_read_iter+0x252/0x430 net/socket.c:879 call_read_iter include/linux/fs.h:1815 [inline] do_iter_readv_writev+0x3f2/0x960 fs/read_write.c:679 do_iter_read+0x1db/0x580 fs/read_write.c:923 vfs_readv+0xc9/0x130 fs/read_write.c:987 do_readv+0x110/0x330 fs/read_write.c:1020 __do_sys_readv fs/read_write.c:1107 [inline] __se_sys_readv fs/read_write.c:1104 [inline] __x64_sys_readv+0x70/0xb0 fs/read_write.c:1104 do_syscall_64+0xd6/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x458ca9 Code: Bad RIP value. RSP: 002b:00007fe5d748fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000013 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458ca9 RDX: 0000000000000001 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe5d74906d4 R13: 00000000004c5a05 R14: 00000000004da060 R15: 00000000ffffffff INFO: task syz-executor.4:6809 blocked for more than 140 seconds. Not tainted 4.19.163-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D26920 6809 5674 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x792/0x1c20 kernel/sched/core.c:3517 schedule+0x7f/0x1b0 kernel/sched/core.c:3561 schedule_timeout+0x6e3/0xe00 kernel/time/timer.c:1794 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common kernel/sched/completion.c:115 [inline] wait_for_completion+0x282/0x460 kernel/sched/completion.c:136 crypto_wait_req include/linux/crypto.h:517 [inline] _aead_recvmsg crypto/algif_aead.c:314 [inline] aead_recvmsg+0x1144/0x1fb0 crypto/algif_aead.c:335 sock_recvmsg_nosec net/socket.c:795 [inline] sock_recvmsg+0xb9/0xf0 net/socket.c:802 sock_read_iter+0x252/0x430 net/socket.c:879 call_read_iter include/linux/fs.h:1815 [inline] do_iter_readv_writev+0x3f2/0x960 fs/read_write.c:679 do_iter_read+0x1db/0x580 fs/read_write.c:923 vfs_readv+0xc9/0x130 fs/read_write.c:987 do_readv+0x110/0x330 fs/read_write.c:1020 __do_sys_readv fs/read_write.c:1107 [inline] __se_sys_readv fs/read_write.c:1104 [inline] __x64_sys_readv+0x70/0xb0 fs/read_write.c:1104 do_syscall_64+0xd6/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x458ca9 Code: Bad RIP value. RSP: 002b:00007fc0a03a4c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000013 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458ca9 RDX: 0000000000000001 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc0a03a56d4 R13: 00000000004c5a05 R14: 00000000004da060 R15: 00000000ffffffff INFO: task syz-executor.4:6825 blocked for more than 140 seconds. Not tainted 4.19.163-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D26824 6825 5674 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x792/0x1c20 kernel/sched/core.c:3517 schedule+0x7f/0x1b0 kernel/sched/core.c:3561 schedule_timeout+0x6e3/0xe00 kernel/time/timer.c:1794 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common kernel/sched/completion.c:115 [inline] wait_for_completion+0x282/0x460 kernel/sched/completion.c:136 crypto_wait_req include/linux/crypto.h:517 [inline] _aead_recvmsg crypto/algif_aead.c:314 [inline] aead_recvmsg+0x1144/0x1fb0 crypto/algif_aead.c:335 sock_recvmsg_nosec net/socket.c:795 [inline] sock_recvmsg+0xb9/0xf0 net/socket.c:802 sock_read_iter+0x252/0x430 net/socket.c:879 call_read_iter include/linux/fs.h:1815 [inline] do_iter_readv_writev+0x3f2/0x960 fs/read_write.c:679 do_iter_read+0x1db/0x580 fs/read_write.c:923 vfs_readv+0xc9/0x130 fs/read_write.c:987 do_readv+0x110/0x330 fs/read_write.c:1020 __do_sys_readv fs/read_write.c:1107 [inline] __se_sys_readv fs/read_write.c:1104 [inline] __x64_sys_readv+0x70/0xb0 fs/read_write.c:1104 do_syscall_64+0xd6/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x458ca9 Code: Bad RIP value. RSP: 002b:00007fc0a0383c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000013 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458ca9 RDX: 0000000000000001 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc0a03846d4 R13: 00000000004c5a05 R14: 00000000004da060 R15: 00000000ffffffff INFO: task syz-executor.0:6810 blocked for more than 140 seconds. Not tainted 4.19.163-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D26856 6810 5684 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x792/0x1c20 kernel/sched/core.c:3517 schedule+0x7f/0x1b0 kernel/sched/core.c:3561 schedule_timeout+0x6e3/0xe00 kernel/time/timer.c:1794 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common kernel/sched/completion.c:115 [inline] wait_for_completion+0x282/0x460 kernel/sched/completion.c:136 crypto_wait_req include/linux/crypto.h:517 [inline] _aead_recvmsg crypto/algif_aead.c:314 [inline] aead_recvmsg+0x1144/0x1fb0 crypto/algif_aead.c:335 sock_recvmsg_nosec net/socket.c:795 [inline] sock_recvmsg+0xb9/0xf0 net/socket.c:802 sock_read_iter+0x252/0x430 net/socket.c:879 call_read_iter include/linux/fs.h:1815 [inline] do_iter_readv_writev+0x3f2/0x960 fs/read_write.c:679 do_iter_read+0x1db/0x580 fs/read_write.c:923 vfs_readv+0xc9/0x130 fs/read_write.c:987 do_readv+0x110/0x330 fs/read_write.c:1020 __do_sys_readv fs/read_write.c:1107 [inline] __se_sys_readv fs/read_write.c:1104 [inline] __x64_sys_readv+0x70/0xb0 fs/read_write.c:1104 do_syscall_64+0xd6/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x458ca9 Code: Bad RIP value. RSP: 002b:00007f2106f09c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000013 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458ca9 RDX: 0000000000000001 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2106f0a6d4 R13: 00000000004c5a05 R14: 00000000004da060 R15: 00000000ffffffff Showing all locks held in the system: 1 lock held by khungtaskd/1039: #0: 000000005564236b (rcu_read_lock){....}, at: debug_show_all_locks+0x5b/0x27a kernel/locking/lockdep.c:4442 1 lock held by in:imklog/5303: #0: 00000000abddcd8b (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xa7/0xd0 fs/file.c:767 1 lock held by syz-executor.5/6788: #0: 00000000aa797c82 (sk_lock-AF_ALG){+.+.}, at: lock_sock include/net/sock.h:1510 [inline] #0: 00000000aa797c82 (sk_lock-AF_ALG){+.+.}, at: af_alg_wait_for_data+0x1b3/0x440 crypto/af_alg.c:770 1 lock held by syz-executor.5/6804: #0: 00000000946e8616 (sk_lock-AF_ALG){+.+.}, at: lock_sock include/net/sock.h:1510 [inline] #0: 00000000946e8616 (sk_lock-AF_ALG){+.+.}, at: af_alg_wait_for_data+0x1b3/0x440 crypto/af_alg.c:770 1 lock held by syz-executor.3/6794: #0: 00000000e2ec58d5 (sk_lock-AF_ALG){+.+.}, at: lock_sock include/net/sock.h:1510 [inline] #0: 00000000e2ec58d5 (sk_lock-AF_ALG){+.+.}, at: af_alg_wait_for_data+0x1b3/0x440 crypto/af_alg.c:770 1 lock held by syz-executor.1/6802: #0: 00000000090ec821 (sk_lock-AF_ALG){+.+.}, at: lock_sock include/net/sock.h:1510 [inline] #0: 00000000090ec821 (sk_lock-AF_ALG){+.+.}, at: af_alg_wait_for_data+0x1b3/0x440 crypto/af_alg.c:770 1 lock held by syz-executor.1/6815: #0: 00000000ab03aa0d (sk_lock-AF_ALG){+.+.}, at: lock_sock include/net/sock.h:1510 [inline] #0: 00000000ab03aa0d (sk_lock-AF_ALG){+.+.}, at: af_alg_wait_for_data+0x1b3/0x440 crypto/af_alg.c:770 1 lock held by syz-executor.2/6800: #0: 00000000ed610683 (sk_lock-AF_ALG){+.+.}, at: lock_sock include/net/sock.h:1510 [inline] #0: 00000000ed610683 (sk_lock-AF_ALG){+.+.}, at: af_alg_wait_for_data+0x1b3/0x440 crypto/af_alg.c:770 1 lock held by syz-executor.2/6816: #0: 00000000eb88f265 (sk_lock-AF_ALG){+.+.}, at: lock_sock include/net/sock.h:1510 [inline] #0: 00000000eb88f265 (sk_lock-AF_ALG){+.+.}, at: af_alg_wait_for_data+0x1b3/0x440 crypto/af_alg.c:770 1 lock held by syz-executor.4/6809: #0: 0000000004254555 (sk_lock-AF_ALG){+.+.}, at: lock_sock include/net/sock.h:1510 [inline] #0: 0000000004254555 (sk_lock-AF_ALG){+.+.}, at: af_alg_wait_for_data+0x1b3/0x440 crypto/af_alg.c:770 1 lock held by syz-executor.4/6825: #0: 000000001fc73e07 (sk_lock-AF_ALG){+.+.}, at: lock_sock include/net/sock.h:1510 [inline] #0: 000000001fc73e07 (sk_lock-AF_ALG){+.+.}, at: af_alg_wait_for_data+0x1b3/0x440 crypto/af_alg.c:770 1 lock held by syz-executor.0/6810: #0: 00000000669b8679 (sk_lock-AF_ALG){+.+.}, at: lock_sock include/net/sock.h:1510 [inline] #0: 00000000669b8679 (sk_lock-AF_ALG){+.+.}, at: af_alg_wait_for_data+0x1b3/0x440 crypto/af_alg.c:770 1 lock held by syz-executor.0/6828: #0: 0000000054ccfd57 (sk_lock-AF_ALG){+.+.}, at: lock_sock include/net/sock.h:1510 [inline] #0: 0000000054ccfd57 (sk_lock-AF_ALG){+.+.}, at: af_alg_wait_for_data+0x1b3/0x440 crypto/af_alg.c:770 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1039 Comm: khungtaskd Not tainted 4.19.163-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+0x123/0x177 lib/dump_stack.c:118 nmi_cpu_backtrace.cold.4+0x3e/0x76 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0xe6/0x11a lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x5c3/0xb40 kernel/hung_task.c:287 kthread+0x34a/0x410 kernel/kthread.c:259 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 3297 Comm: systemd-journal Not tainted 4.19.163-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:load_new_mm_cr3+0x6f/0x200 arch/x86/mm/tlb.c:127 Code: df 48 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 62 01 00 00 48 83 3d 39 ef aa 06 00 0f 84 bd 00 00 00 48 89 d7 0f 22 df 0f 1f 40 00 <48> 83 c4 08 5b 41 5c 5d c3 66 81 fe fe 0f 0f 87 a1 00 00 00 48 c7 RSP: 0018:ffff8881dea078b8 EFLAGS: 00000086 RAX: dffffc0000000000 RBX: 0000000000000002 RCX: 1ffffffff0fafcff RDX: 800000000806d002 RSI: 0000000000000000 RDI: 800000000806d002 RBP: ffff8881dea078d0 R08: 000000000002bb00 R09: 0000000000000001 R10: fffffbfff10456ca R11: ffffffff8822b657 R12: ffffffff8806d000 R13: 0000000000000001 R14: 0000000000000001 R15: ffffffff8822b648 FS: 00007fe2156458c0(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe212a3a000 CR3: 000000000806d002 CR4: 00000000001606e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: switch_mm_irqs_off+0x325/0x1380 arch/x86/mm/tlb.c:403 switch_mm+0x98/0x150 arch/x86/mm/tlb.c:157 enter_lazy_tlb+0x29/0x40 arch/x86/mm/tlb.c:450 context_switch kernel/sched/core.c:2814 [inline] __schedule+0x1072/0x1c20 kernel/sched/core.c:3517 preempt_schedule_irq+0x87/0x110 kernel/sched/core.c:3744 retint_kernel+0x1b/0x2d RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:seqcount_lockdep_reader_access include/linux/seqlock.h:83 [inline] RIP: 0010:read_seqcount_begin include/linux/seqlock.h:164 [inline] RIP: 0010:read_seqbegin include/linux/seqlock.h:440 [inline] RIP: 0010:path_init+0x660/0x1550 fs/namei.c:2206 Code: 00 00 fc ff df 48 89 55 c0 48 c1 ea 03 80 3c 02 00 0f 85 bf 0b 00 00 48 83 3d 03 20 74 06 00 0f 84 f4 09 00 00 4c 89 ff 57 9d <0f> 1f 44 00 00 49 c7 c7 c0 26 01 88 48 b8 00 00 00 00 00 fc ff df RSP: 0018:ffff8881dea07b30 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff02 RAX: dffffc0000000000 RBX: ffff8881dea07c20 RCX: 0000000000000000 RDX: 1ffffffff1024049 RSI: ffff8881de9fef88 RDI: 0000000000000282 RBP: ffff8881dea07ba8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881d61b6260 R13: 0000000000000040 R14: ffffffff88120250 R15: 0000000000000282 path_parentat.isra.41+0x14/0x100 fs/namei.c:2366 filename_parentat.isra.55.part.56+0x154/0x400 fs/namei.c:2389 filename_parentat fs/namei.c:3619 [inline] filename_create+0xab/0x410 fs/namei.c:3621 user_path_create fs/namei.c:3696 [inline] do_mkdirat+0xae/0x220 fs/namei.c:3834 __do_sys_mkdir fs/namei.c:3858 [inline] __se_sys_mkdir fs/namei.c:3856 [inline] __x64_sys_mkdir+0x57/0x80 fs/namei.c:3856 do_syscall_64+0xd6/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fe214901687 Code: Bad RIP value. RSP: 002b:00007ffe62759788 EFLAGS: 00000293 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffe6275c6a0 RCX: 00007fe214901687 RDX: 00007fe215372a00 RSI: 00000000000001ed RDI: 0000556c719448c0 RBP: 00007ffe627597c0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000069 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ffe6275c6a0 R15: 00007ffe62759cb0