bisecting fixing commit since c98875d930e915d01e8c40c7d3c16f00b3c8abe1 building syzkaller on 53199d6e8aee5f0ebd3775d2b1c674f4e6e64e2b testing commit c98875d930e915d01e8c40c7d3c16f00b3c8abe1 with gcc (GCC) 8.1.0 kernel signature: 64945e8c09eacb69203dcbe9716ad9421da65e25bfd04108262a9e99a17fb2a0 all runs: crashed: INFO: task hung in aead_recvmsg testing current HEAD f6d5cb9e2c06f7d583dd9f4f7cca21d13d78c32a testing commit f6d5cb9e2c06f7d583dd9f4f7cca21d13d78c32a with gcc (GCC) 8.1.0 kernel signature: bc6af0af981a0acb03f277d089ef25ce8b13abad14f8c419c09db245a1844f96 all runs: crashed: INFO: task hung in aead_recvmsg revisions tested: 2, total time: 32m10.746156642s (build: 19m9.334464251s, test: 11m16.993099141s) the crash still happens on HEAD commit msg: Linux 4.19.142 crash: INFO: task hung in aead_recvmsg IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready 8021q: adding VLAN 0 to HW filter on device batadv0 8021q: adding VLAN 0 to HW filter on device batadv0 INFO: task syz-executor.4:7220 blocked for more than 140 seconds. Not tainted 4.19.142-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D28584 7220 6240 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:1801 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:313 [inline] aead_recvmsg+0x1182/0x1fb0 crypto/algif_aead.c:334 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:00007f3904d63c78 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: 00007f3904d646d4 R13: 00000000004c5a05 R14: 00000000004da060 R15: 00000000ffffffff INFO: task syz-executor.4:7233 blocked for more than 140 seconds. Not tainted 4.19.142-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D27816 7233 6240 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:1801 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:313 [inline] aead_recvmsg+0x1182/0x1fb0 crypto/algif_aead.c:334 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:00007f3904d42c78 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: 00007f3904d436d4 R13: 00000000004c5a05 R14: 00000000004da060 R15: 00000000ffffffff INFO: task syz-executor.3:7229 blocked for more than 140 seconds. Not tainted 4.19.142-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D28584 7229 6236 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:1801 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:313 [inline] aead_recvmsg+0x1182/0x1fb0 crypto/algif_aead.c:334 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:00007fc8911e1c78 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: 00007fc8911e26d4 R13: 00000000004c5a05 R14: 00000000004da060 R15: 00000000ffffffff INFO: task syz-executor.3:7241 blocked for more than 140 seconds. Not tainted 4.19.142-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D28344 7241 6236 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:1801 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:313 [inline] aead_recvmsg+0x1182/0x1fb0 crypto/algif_aead.c:334 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:00007fc8911c0c78 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: 00007fc8911c16d4 R13: 00000000004c5a05 R14: 00000000004da060 R15: 00000000ffffffff INFO: task syz-executor.5:7230 blocked for more than 140 seconds. Not tainted 4.19.142-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D28584 7230 6243 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:1801 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:313 [inline] aead_recvmsg+0x1182/0x1fb0 crypto/algif_aead.c:334 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:00007f2907ad8c78 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: 00007f2907ad96d4 R13: 00000000004c5a05 R14: 00000000004da060 R15: 00000000ffffffff INFO: task syz-executor.5:7244 blocked for more than 140 seconds. Not tainted 4.19.142-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D28344 7244 6243 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:1801 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:313 [inline] aead_recvmsg+0x1182/0x1fb0 crypto/algif_aead.c:334 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:00007f2907ab7c78 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: 00007f2907ab86d4 R13: 00000000004c5a05 R14: 00000000004da060 R15: 00000000ffffffff INFO: task syz-executor.1:7231 blocked for more than 140 seconds. Not tainted 4.19.142-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D28344 7231 6244 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:1801 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:313 [inline] aead_recvmsg+0x1182/0x1fb0 crypto/algif_aead.c:334 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:00007fb50ad87c78 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: 00007fb50ad886d4 R13: 00000000004c5a05 R14: 00000000004da060 R15: 00000000ffffffff INFO: task syz-executor.1:7245 blocked for more than 140 seconds. Not tainted 4.19.142-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D28344 7245 6244 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:1801 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:313 [inline] aead_recvmsg+0x1182/0x1fb0 crypto/algif_aead.c:334 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:00007fb50ad66c78 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: 00007fb50ad676d4 R13: 00000000004c5a05 R14: 00000000004da060 R15: 00000000ffffffff INFO: task syz-executor.0:7228 blocked for more than 140 seconds. Not tainted 4.19.142-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D27736 7228 6238 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:1801 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:313 [inline] aead_recvmsg+0x1182/0x1fb0 crypto/algif_aead.c:334 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:00007f2e8442ac78 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: 00007f2e8442b6d4 R13: 00000000004c5a05 R14: 00000000004da060 R15: 00000000ffffffff INFO: task syz-executor.0:7240 blocked for more than 140 seconds. Not tainted 4.19.142-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D28344 7240 6238 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:1801 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:313 [inline] aead_recvmsg+0x1182/0x1fb0 crypto/algif_aead.c:334 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:00007f2e84409c78 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: 00007f2e8440a6d4 R13: 00000000004c5a05 R14: 00000000004da060 R15: 00000000ffffffff Showing all locks held in the system: 1 lock held by khungtaskd/1026: #0: 00000000187ed331 (rcu_read_lock){....}, at: debug_show_all_locks+0x5b/0x27a kernel/locking/lockdep.c:4442 1 lock held by in:imklog/5713: #0: 00000000981724a8 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xa7/0xd0 fs/file.c:767 1 lock held by syz-executor.4/7220: #0: 000000007b9b40f6 (sk_lock-AF_ALG){+.+.}, at: lock_sock include/net/sock.h:1510 [inline] #0: 000000007b9b40f6 (sk_lock-AF_ALG){+.+.}, at: af_alg_wait_for_data+0x1b3/0x440 crypto/af_alg.c:770 1 lock held by syz-executor.4/7233: #0: 0000000094e92407 (sk_lock-AF_ALG){+.+.}, at: lock_sock include/net/sock.h:1510 [inline] #0: 0000000094e92407 (sk_lock-AF_ALG){+.+.}, at: af_alg_wait_for_data+0x1b3/0x440 crypto/af_alg.c:770 1 lock held by syz-executor.3/7229: #0: 00000000264eefda (sk_lock-AF_ALG){+.+.}, at: lock_sock include/net/sock.h:1510 [inline] #0: 00000000264eefda (sk_lock-AF_ALG){+.+.}, at: af_alg_wait_for_data+0x1b3/0x440 crypto/af_alg.c:770 1 lock held by syz-executor.3/7241: #0: 00000000978fe883 (sk_lock-AF_ALG){+.+.}, at: lock_sock include/net/sock.h:1510 [inline] #0: 00000000978fe883 (sk_lock-AF_ALG){+.+.}, at: af_alg_wait_for_data+0x1b3/0x440 crypto/af_alg.c:770 1 lock held by syz-executor.5/7230: #0: 000000003fcece5f (sk_lock-AF_ALG){+.+.}, at: lock_sock include/net/sock.h:1510 [inline] #0: 000000003fcece5f (sk_lock-AF_ALG){+.+.}, at: af_alg_wait_for_data+0x1b3/0x440 crypto/af_alg.c:770 1 lock held by syz-executor.5/7244: #0: 00000000b4e3b2f4 (sk_lock-AF_ALG){+.+.}, at: lock_sock include/net/sock.h:1510 [inline] #0: 00000000b4e3b2f4 (sk_lock-AF_ALG){+.+.}, at: af_alg_wait_for_data+0x1b3/0x440 crypto/af_alg.c:770 1 lock held by syz-executor.1/7231: #0: 00000000ba09c8bb (sk_lock-AF_ALG){+.+.}, at: lock_sock include/net/sock.h:1510 [inline] #0: 00000000ba09c8bb (sk_lock-AF_ALG){+.+.}, at: af_alg_wait_for_data+0x1b3/0x440 crypto/af_alg.c:770 1 lock held by syz-executor.1/7245: #0: 00000000a00852ec (sk_lock-AF_ALG){+.+.}, at: lock_sock include/net/sock.h:1510 [inline] #0: 00000000a00852ec (sk_lock-AF_ALG){+.+.}, at: af_alg_wait_for_data+0x1b3/0x440 crypto/af_alg.c:770 1 lock held by syz-executor.0/7228: #0: 000000001de6fb1e (sk_lock-AF_ALG){+.+.}, at: lock_sock include/net/sock.h:1510 [inline] #0: 000000001de6fb1e (sk_lock-AF_ALG){+.+.}, at: af_alg_wait_for_data+0x1b3/0x440 crypto/af_alg.c:770 1 lock held by syz-executor.0/7240: #0: 00000000e4bdca67 (sk_lock-AF_ALG){+.+.}, at: lock_sock include/net/sock.h:1510 [inline] #0: 00000000e4bdca67 (sk_lock-AF_ALG){+.+.}, at: af_alg_wait_for_data+0x1b3/0x440 crypto/af_alg.c:770 1 lock held by syz-executor.2/7232: #0: 0000000000c34a8e (sk_lock-AF_ALG){+.+.}, at: lock_sock include/net/sock.h:1510 [inline] #0: 0000000000c34a8e (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: 1026 Comm: khungtaskd Not tainted 4.19.142-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: 3520 Comm: systemd-journal Not tainted 4.19.142-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0033:0x7f0f06a53a27 Code: 06 eb 1a ff 0b 74 16 48 8d 3b 48 81 ec 80 00 00 00 e8 cd 9a 07 00 48 81 c4 80 00 00 00 48 85 ed 0f 84 4d 02 00 00 48 8b 55 f8 c2 02 74 64 8b 15 9a fd 31 00 85 d2 0f 85 de 01 00 00 5b 48 89 RSP: 002b:00007ffd0bf9f370 EFLAGS: 00000206 RAX: 00000000000001e1 RBX: 00007f0f06d71b00 RCX: 0000000000000000 RDX: 00000000000001e1 RSI: 0000000000210000 RDI: 0000000000000001 RBP: 00005648ed7387f0 R08: 00007f0f06d71e48 R09: 00000000000001e0 R10: 0000000000000069 R11: 00007f0f06b42060 R12: 00000000000001d8 R13: 0000000000012f50 R14: 00005648ed73b0b0 R15: 00007ffd0bf9fc10 FS: 00007f0f077f78c0 GS: 0000000000000000