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🐞 Open [953] 🐞 Fixed [3801] 🐞 Invalid [8162] 📈 Kernel Health 📈 Bug Lifetimes 📈 Fuzzing 📈 Crashes |
Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|---|
upstream | possible deadlock in sk_diag_fill (2) | 1 | 740d | 739d | 0/22 | auto-closed as invalid on 2020/09/07 16:12 | |||
upstream | possible deadlock in sk_diag_fill (3) | 8 | 72d | 280d | 0/22 | upstream: reported on 2021/08/13 17:17 |
dccp_close: ABORT with 390 bytes unread ====================================================== WARNING: possible circular locking dependency detected 4.18.0-rc5+ #154 Not tainted ------------------------------------------------------ syz-executor2/5596 is trying to acquire lock: 0000000053ff80f6 (&(&u->lock)->rlock/1){+.+.}, at: sk_diag_dump_icons net/unix/diag.c:82 [inline] 0000000053ff80f6 (&(&u->lock)->rlock/1){+.+.}, at: sk_diag_fill.isra.5+0xa57/0x10f0 net/unix/diag.c:144 but task is already holding lock: 00000000b2346253 (rlock-AF_UNIX){+.+.}, at: spin_lock include/linux/spinlock.h:310 [inline] 00000000b2346253 (rlock-AF_UNIX){+.+.}, at: sk_diag_dump_icons net/unix/diag.c:64 [inline] 00000000b2346253 (rlock-AF_UNIX){+.+.}, at: sk_diag_fill.isra.5+0x962/0x10f0 net/unix/diag.c:144 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (rlock-AF_UNIX){+.+.}: __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x96/0xc0 kernel/locking/spinlock.c:152 skb_queue_tail+0x26/0x150 net/core/skbuff.c:2916 unix_dgram_sendmsg+0xfa2/0x1750 net/unix/af_unix.c:1797 sock_sendmsg_nosec net/socket.c:641 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:651 ___sys_sendmsg+0x51d/0x930 net/socket.c:2125 __sys_sendmmsg+0x240/0x6f0 net/socket.c:2220 __do_sys_sendmmsg net/socket.c:2249 [inline] __se_sys_sendmmsg net/socket.c:2246 [inline] __x64_sys_sendmmsg+0x9d/0x100 net/socket.c:2246 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (&(&u->lock)->rlock/1){+.+.}: lock_acquire+0x1e4/0x540 kernel/locking/lockdep.c:3924 _raw_spin_lock_nested+0x28/0x40 kernel/locking/spinlock.c:354 sk_diag_dump_icons net/unix/diag.c:82 [inline] sk_diag_fill.isra.5+0xa57/0x10f0 net/unix/diag.c:144 sk_diag_dump net/unix/diag.c:178 [inline] unix_diag_dump+0x35f/0x550 net/unix/diag.c:206 netlink_dump+0x519/0xd50 net/netlink/af_netlink.c:2226 __netlink_dump_start+0x51a/0x780 net/netlink/af_netlink.c:2323 netlink_dump_start include/linux/netlink.h:214 [inline] unix_diag_handler_dump+0x3fc/0x7d0 net/unix/diag.c:307 __sock_diag_cmd net/core/sock_diag.c:230 [inline] sock_diag_rcv_msg+0x2e0/0x3d0 net/core/sock_diag.c:261 netlink_rcv_skb+0x172/0x440 net/netlink/af_netlink.c:2448 sock_diag_rcv+0x2a/0x40 net/core/sock_diag.c:272 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0x5a0/0x760 net/netlink/af_netlink.c:1336 netlink_sendmsg+0xa18/0xfd0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:641 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:651 sock_write_iter+0x362/0x5c0 net/socket.c:920 call_write_iter include/linux/fs.h:1793 [inline] do_iter_readv_writev+0x897/0xa90 fs/read_write.c:680 do_iter_write+0x185/0x5f0 fs/read_write.c:959 vfs_writev+0x1f1/0x360 fs/read_write.c:1004 do_writev+0x11a/0x310 fs/read_write.c:1039 __do_sys_writev fs/read_write.c:1112 [inline] __se_sys_writev fs/read_write.c:1109 [inline] __x64_sys_writev+0x75/0xb0 fs/read_write.c:1109 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(rlock-AF_UNIX); lock(&(&u->lock)->rlock/1); lock(rlock-AF_UNIX); lock(&(&u->lock)->rlock/1); *** DEADLOCK *** 5 locks held by syz-executor2/5596: #0: 0000000024732816 (sock_diag_mutex){+.+.}, at: sock_diag_rcv+0x1b/0x40 net/core/sock_diag.c:271 #1: 00000000f3c4b570 (sock_diag_table_mutex){+.+.}, at: __sock_diag_cmd net/core/sock_diag.c:225 [inline] #1: 00000000f3c4b570 (sock_diag_table_mutex){+.+.}, at: sock_diag_rcv_msg+0x169/0x3d0 net/core/sock_diag.c:261 #2: 0000000072846eb5 (nlk_cb_mutex-SOCK_DIAG){+.+.}, at: netlink_dump+0x9f/0xd50 net/netlink/af_netlink.c:2182 #3: 00000000fc568aee (unix_table_lock){+.+.}, at: spin_lock include/linux/spinlock.h:310 [inline] #3: 00000000fc568aee (unix_table_lock){+.+.}, at: unix_diag_dump+0x10a/0x550 net/unix/diag.c:192 #4: 00000000b2346253 (rlock-AF_UNIX){+.+.}, at: spin_lock include/linux/spinlock.h:310 [inline] #4: 00000000b2346253 (rlock-AF_UNIX){+.+.}, at: sk_diag_dump_icons net/unix/diag.c:64 [inline] #4: 00000000b2346253 (rlock-AF_UNIX){+.+.}, at: sk_diag_fill.isra.5+0x962/0x10f0 net/unix/diag.c:144 stack backtrace: CPU: 1 PID: 5596 Comm: syz-executor2 Not tainted 4.18.0-rc5+ #154 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+0x1c9/0x2b4 lib/dump_stack.c:113 print_circular_bug.isra.36.cold.57+0x1bd/0x27d kernel/locking/lockdep.c:1227 check_prev_add kernel/locking/lockdep.c:1867 [inline] check_prevs_add kernel/locking/lockdep.c:1980 [inline] validate_chain kernel/locking/lockdep.c:2421 [inline] __lock_acquire+0x3449/0x5020 kernel/locking/lockdep.c:3435 lock_acquire+0x1e4/0x540 kernel/locking/lockdep.c:3924 _raw_spin_lock_nested+0x28/0x40 kernel/locking/spinlock.c:354 sk_diag_dump_icons net/unix/diag.c:82 [inline] sk_diag_fill.isra.5+0xa57/0x10f0 net/unix/diag.c:144 sk_diag_dump net/unix/diag.c:178 [inline] unix_diag_dump+0x35f/0x550 net/unix/diag.c:206 netlink_dump+0x519/0xd50 net/netlink/af_netlink.c:2226 __netlink_dump_start+0x51a/0x780 net/netlink/af_netlink.c:2323 netlink_dump_start include/linux/netlink.h:214 [inline] unix_diag_handler_dump+0x3fc/0x7d0 net/unix/diag.c:307 __sock_diag_cmd net/core/sock_diag.c:230 [inline] sock_diag_rcv_msg+0x2e0/0x3d0 net/core/sock_diag.c:261 netlink_rcv_skb+0x172/0x440 net/netlink/af_netlink.c:2448 sock_diag_rcv+0x2a/0x40 net/core/sock_diag.c:272 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0x5a0/0x760 net/netlink/af_netlink.c:1336 netlink_sendmsg+0xa18/0xfd0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:641 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:651 sock_write_iter+0x362/0x5c0 net/socket.c:920 call_write_iter include/linux/fs.h:1793 [inline] do_iter_readv_writev+0x897/0xa90 fs/read_write.c:680 do_iter_write+0x185/0x5f0 fs/read_write.c:959 vfs_writev+0x1f1/0x360 fs/read_write.c:1004 do_writev+0x11a/0x310 fs/read_write.c:1039 __do_sys_writev fs/read_write.c:1112 [inline] __se_sys_writev fs/read_write.c:1109 [inline] __x64_sys_writev+0x75/0xb0 fs/read_write.c:1109 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x455ab9 Code: 1d ba 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 eb b9 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fe669b1cc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 00007fe669b1d6d4 RCX: 0000000000455ab9 RDX: 0000000000000001 RSI: 00000000200000c0 RDI: 0000000000000015 RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004c095e R14: 00000000004d4de8 R15: 0000000000000000
Manager | Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Title |
---|---|---|---|---|---|---|---|---|---|---|---|
ci-upstream-kasan-gce | 2018/07/19 23:02 | upstream | 024ddc0ce104 | 49f35839 | .config | log | report | ||||
ci-upstream-kasan-gce-root | 2018/07/06 05:53 | upstream | c42c12a90545 | d3b2a0e2 | .config | log | report | ||||
ci-upstream-kasan-gce-root | 2018/07/03 23:14 | upstream | 410da1e12ffe | 317fc8ea | .config | log | report | ||||
ci-upstream-kasan-gce-386 | 2019/05/19 14:59 | upstream | 72cf0b07418a | 5a4461b0 | .config | log | report | ||||
ci-upstream-kasan-gce-386 | 2018/07/19 12:06 | upstream | 024ddc0ce104 | 49f35839 | .config | log | report | ||||
ci-upstream-kasan-gce-386 | 2018/07/16 11:03 | upstream | 9d3cce1e8b85 | 92a49505 | .config | log | report | ||||
ci-upstream-kasan-gce-386 | 2018/07/04 01:39 | upstream | 410da1e12ffe | 317fc8ea | .config | log | report | ||||
ci-upstream-kasan-gce-386 | 2018/05/25 10:01 | upstream | b50694381cfc | f48c20b8 | .config | log | report | ||||
ci-upstream-kasan-gce-386 | 2018/05/05 16:41 | upstream | c1c07416cdd4 | 6a0382b5 | .config | log | report | ||||
ci-upstream-net-this-kasan-gce | 2019/01/20 06:11 | net | 3e64cf7a435e | 353f32ea | .config | log | report | ||||
ci-upstream-net-this-kasan-gce | 2018/09/12 17:35 | net | cc4dfb7f70a3 | 71907daf | .config | log | report | ||||
ci-upstream-net-this-kasan-gce | 2018/08/19 20:11 | net | bb107456ba5a | 2dc4378f | .config | log | report | ||||
ci-upstream-net-kasan-gce | 2018/11/10 18:24 | net-next | 12ceaf8864c2 | f9815aaf | .config | log | report | ||||
ci-upstream-net-kasan-gce | 2018/08/24 18:03 | net-next | 2ad0d5269970 | 95b5c82b | .config | log | report | ||||
ci-upstream-net-kasan-gce | 2018/06/25 02:30 | net-next | 0ef8b4567d08 | 2064fc5c | .config | log | report | ||||
ci-upstream-net-kasan-gce | 2018/06/23 21:47 | net-next | dd55c4ea9e6b | 2064fc5c | .config | log | report | ||||
ci-upstream-net-kasan-gce | 2018/06/22 01:15 | net-next | f0dc7f9c6dd9 | 095ef806 | .config | log | report | ||||
ci-upstream-net-kasan-gce | 2018/06/19 21:18 | net-next | f0dc7f9c6dd9 | 732e4256 | .config | log | report | ||||
ci-upstream-net-kasan-gce | 2018/06/17 07:10 | net-next | f0dc7f9c6dd9 | 27c5f59f | .config | log | report | ||||
ci-upstream-net-kasan-gce | 2018/06/10 13:16 | net-next | 3a979e8c07e3 | 866118af | .config | log | report | ||||
ci-upstream-net-kasan-gce | 2018/06/06 23:16 | net-next | 7170e6045a6a | e0e534c6 | .config | log | report | ||||
ci-upstream-net-kasan-gce | 2018/06/06 08:04 | net-next | 75d4e704fa8d | 863a24bb | .config | log | report | ||||
ci-upstream-net-kasan-gce | 2018/06/04 11:04 | net-next | f624434a0ec9 | 6cbe7c26 | .config | log | report | ||||
ci-upstream-net-kasan-gce | 2018/06/03 20:38 | net-next | eaf47b17a77f | 2f93b54f | .config | log | report | ||||
ci-upstream-net-kasan-gce | 2018/06/02 20:51 | net-next | 1ffdd8e1643f | 2f93b54f | .config | log | report | ||||
ci-upstream-net-kasan-gce | 2018/06/02 07:38 | net-next | 21ad1173589e | 2f93b54f | .config | log | report | ||||
ci-upstream-net-kasan-gce | 2018/06/02 05:55 | net-next | 21ad1173589e | 2f93b54f | .config | log | report | ||||
ci-upstream-net-kasan-gce | 2018/05/30 04:13 | net-next | ae40832e53c3 | 2f93b54f | .config | log | report | ||||
ci-upstream-net-kasan-gce | 2018/05/27 13:20 | net-next | 5b79c2af667c | f48c20b8 | .config | log | report | ||||
ci-upstream-linux-next-kasan-gce-root | 2019/03/17 01:02 | linux-next | cf08baa29613 | bab43553 | .config | log | report |