IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready ------------[ cut here ]------------ WARNING: CPU: 0 PID: 7213 at net/kcm/kcmsock.c:629 kcm_write_msgs.cold.34+0x5f/0x13e net/kcm/kcmsock.c:629 Modules linked in: CPU: 0 PID: 7213 Comm: syz-executor.1 Not tainted 4.19.206-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kcm_write_msgs.cold.34+0x5f/0x13e net/kcm/kcmsock.c:629 Code: c7 c7 60 cf d0 87 4c 89 5d d0 e8 2d 30 ec ff 0f 0b 4c 8b 5d d0 e9 b8 bd 5f ff 48 c7 c7 60 cf d0 87 4c 89 5d d0 e8 12 30 ec ff <0f> 0b 8b 85 7c ff ff ff ba ea ff ff ff 4c 8b 5d d0 89 45 c4 e9 12 RSP: 0018:ffff8881d7ecf8f8 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881e16f3900 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8767b580 RDI: ffffffff8a1889a0 RBP: ffff8881d7ecf9b8 R08: ffffed103ed05089 R09: ffffed103ed05088 R10: ffffed103ed05088 R11: ffff8881f6828447 R12: 00000000000000c0 R13: ffff8881e8e51240 R14: ffff8881d870f640 R15: ffff8881e16f3840 FS: 00007f60f37ec700(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff0fb90dd0 CR3: 00000001da969006 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kcm_sendmsg+0x1897/0x25b0 net/kcm/kcmsock.c:1035 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xb5/0xf0 net/socket.c:661 sock_write_iter+0x215/0x420 net/socket.c:966 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x443/0x890 fs/read_write.c:487 vfs_write+0x150/0x4d0 fs/read_write.c:549 ksys_write+0x103/0x260 fs/read_write.c:599 __do_sys_write fs/read_write.c:611 [inline] __se_sys_write fs/read_write.c:608 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:608 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4641a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f60f37ec198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000c4c RCX: 00000000004641a9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007f60f37ec6bc R14: 00000000ffffffff R15: 0000000000000003 irq event stamp: 9030 hardirqs last enabled at (9029): [] __free_pages_ok+0x630/0xd80 mm/page_alloc.c:1286 hardirqs last disabled at (9030): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (8998): [] __do_softirq+0x62d/0x919 kernel/softirq.c:318 softirqs last disabled at (8915): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (8915): [] irq_exit+0x17f/0x1c0 kernel/softirq.c:412 ---[ end trace 74ab67240011ee0a ]--- KCM: Hard failure on kcm_write_msgs ------------[ cut here ]------------ WARNING: CPU: 1 PID: 7326 at net/kcm/kcmsock.c:629 kcm_write_msgs.cold.34+0x5f/0x13e net/kcm/kcmsock.c:629 ------------[ cut here ]------------ Modules linked in: CPU: 1 PID: 7326 Comm: syz-executor.1 Tainted: G W 4.19.206-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kcm_write_msgs.cold.34+0x5f/0x13e net/kcm/kcmsock.c:629 Code: c7 c7 60 cf d0 87 4c 89 5d d0 e8 2d 30 ec ff 0f 0b 4c 8b 5d d0 e9 b8 bd 5f ff 48 c7 c7 60 cf d0 87 4c 89 5d d0 e8 12 30 ec ff <0f> 0b 8b 85 7c ff ff ff ba ea ff ff ff 4c 8b 5d d0 89 45 c4 e9 12 RSP: 0018:ffff8881cd8b78f8 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881f4d0ad40 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8767b580 RDI: ffffffff8a1889a0 RBP: ffff8881cd8b79b8 R08: ffffed103ed25089 R09: ffffed103ed25088 R10: ffffed103ed25088 R11: ffff8881f6928447 R12: 00000000000000c0 R13: ffff8881d7c02000 R14: ffff8881de73c080 R15: ffff8881f4d0ac80 FS: 00007f60f37ec700(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020002940 CR3: 00000001d7315001 CR4: 00000000001606e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kcm_sendmsg+0x1897/0x25b0 net/kcm/kcmsock.c:1035 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xb5/0xf0 net/socket.c:661 sock_write_iter+0x215/0x420 net/socket.c:966 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x443/0x890 fs/read_write.c:487 vfs_write+0x150/0x4d0 fs/read_write.c:549 ksys_write+0x103/0x260 fs/read_write.c:599 __do_sys_write fs/read_write.c:611 [inline] __se_sys_write fs/read_write.c:608 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:608 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4641a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f60f37ec198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000c4c RCX: 00000000004641a9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007f60f37ec6bc R14: 00000000ffffffff R15: 0000000000000003 irq event stamp: 8574 hardirqs last enabled at (8573): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline] hardirqs last enabled at (8573): [] _raw_spin_unlock_irq+0x27/0x80 kernel/locking/spinlock.c:192 hardirqs last disabled at (8574): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (8568): [] __do_softirq+0x62d/0x919 kernel/softirq.c:318 softirqs last disabled at (8283): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (8283): [] irq_exit+0x17f/0x1c0 kernel/softirq.c:412 ---[ end trace 74ab67240011ee0b ]--- WARNING: CPU: 0 PID: 7345 at net/kcm/kcmsock.c:629 kcm_write_msgs.cold.34+0x5f/0x13e net/kcm/kcmsock.c:629 KCM: Hard failure on kcm_write_msgs Modules linked in: CPU: 0 PID: 7345 Comm: syz-executor.4 Tainted: G W 4.19.206-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kcm_write_msgs.cold.34+0x5f/0x13e net/kcm/kcmsock.c:629 Code: c7 c7 60 cf d0 87 4c 89 5d d0 e8 2d 30 ec ff 0f 0b 4c 8b 5d d0 e9 b8 bd 5f ff 48 c7 c7 60 cf d0 87 4c 89 5d d0 e8 12 30 ec ff <0f> 0b 8b 85 7c ff ff ff ba ea ff ff ff 4c 8b 5d d0 89 45 c4 e9 12 RSP: 0018:ffff8881d4e278f8 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881f4dce600 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8767b580 RDI: ffffffff8a1889a0 RBP: ffff8881d4e279b8 R08: ffffed103ed05089 R09: ffffed103ed05088 R10: ffffed103ed05088 R11: ffff8881f6828447 R12: 00000000000000c0 R13: ffff8881f4cbd880 R14: ffff8881d519b6c0 R15: ffff8881f4dce540 FS: 00007feceec2b700(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffa07ab5008 CR3: 00000001d496c001 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kcm_sendmsg+0x1897/0x25b0 net/kcm/kcmsock.c:1035 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xb5/0xf0 net/socket.c:661 sock_write_iter+0x215/0x420 net/socket.c:966 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x443/0x890 fs/read_write.c:487 vfs_write+0x150/0x4d0 fs/read_write.c:549 ksys_write+0x103/0x260 fs/read_write.c:599 __do_sys_write fs/read_write.c:611 [inline] __se_sys_write fs/read_write.c:608 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:608 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4641a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007feceec2b198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000c4c RCX: 00000000004641a9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bfa0 R13: 00007feceec2b6bc R14: 00000000ffffffff R15: 0000000000000003 irq event stamp: 3364 hardirqs last enabled at (3363): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline] hardirqs last enabled at (3363): [] _raw_spin_unlock_irq+0x27/0x80 kernel/locking/spinlock.c:192 hardirqs last disabled at (3364): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (3350): [] spin_unlock_bh include/linux/spinlock.h:374 [inline] softirqs last enabled at (3350): [] release_sock+0x11f/0x180 net/core/sock.c:2892 softirqs last disabled at (3348): [] spin_lock_bh include/linux/spinlock.h:334 [inline] softirqs last disabled at (3348): [] release_sock+0x1b/0x180 net/core/sock.c:2879 ---[ end trace 74ab67240011ee0c ]--- KCM: Hard failure on kcm_write_msgs ------------[ cut here ]------------ WARNING: CPU: 1 PID: 7416 at net/kcm/kcmsock.c:629 kcm_write_msgs.cold.34+0x5f/0x13e net/kcm/kcmsock.c:629 Modules linked in: CPU: 1 PID: 7416 Comm: syz-executor.0 Tainted: G W 4.19.206-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kcm_write_msgs.cold.34+0x5f/0x13e net/kcm/kcmsock.c:629 Code: c7 c7 60 cf d0 87 4c 89 5d d0 e8 2d 30 ec ff 0f 0b 4c 8b 5d d0 e9 b8 bd 5f ff 48 c7 c7 60 cf d0 87 4c 89 5d d0 e8 12 30 ec ff <0f> 0b 8b 85 7c ff ff ff ba ea ff ff ff 4c 8b 5d d0 89 45 c4 e9 12 RSP: 0018:ffff8881d9e2f8f8 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881f388db40 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8767b580 RDI: ffffffff8a1889a0 RBP: ffff8881d9e2f9b8 R08: ffffed103ed25089 R09: ffffed103ed25088 R10: ffffed103ed25088 R11: ffff8881f6928447 R12: 00000000000000c0 R13: ffff8881f3156180 R14: ffff8881f4741440 R15: ffff8881f388da80 FS: 00007f2bbc860700(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020002940 CR3: 00000001dc928003 CR4: 00000000001606e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kcm_sendmsg+0x1897/0x25b0 net/kcm/kcmsock.c:1035 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xb5/0xf0 net/socket.c:661 sock_write_iter+0x215/0x420 net/socket.c:966 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x443/0x890 fs/read_write.c:487 vfs_write+0x150/0x4d0 fs/read_write.c:549 ksys_write+0x103/0x260 fs/read_write.c:599 __do_sys_write fs/read_write.c:611 [inline] __se_sys_write fs/read_write.c:608 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:608 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4641a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f2bbc860198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000c4c RCX: 00000000004641a9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bfa0 R13: 00007f2bbc8606bc R14: 00000000ffffffff R15: 0000000000000003 irq event stamp: 3170 hardirqs last enabled at (3169): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline] hardirqs last enabled at (3169): [] _raw_spin_unlock_irq+0x27/0x80 kernel/locking/spinlock.c:192 hardirqs last disabled at (3170): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (3164): [] __do_softirq+0x62d/0x919 kernel/softirq.c:318 softirqs last disabled at (3065): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (3065): [] irq_exit+0x17f/0x1c0 kernel/softirq.c:412 ---[ end trace 74ab67240011ee0d ]--- KCM: Hard failure on kcm_write_msgs ------------[ cut here ]------------ WARNING: CPU: 0 PID: 7434 at net/kcm/kcmsock.c:629 kcm_write_msgs.cold.34+0x5f/0x13e net/kcm/kcmsock.c:629 Modules linked in: CPU: 0 PID: 7434 Comm: syz-executor.2 Tainted: G W 4.19.206-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kcm_write_msgs.cold.34+0x5f/0x13e net/kcm/kcmsock.c:629 Code: c7 c7 60 cf d0 87 4c 89 5d d0 e8 2d 30 ec ff 0f 0b 4c 8b 5d d0 e9 b8 bd 5f ff 48 c7 c7 60 cf d0 87 4c 89 5d d0 e8 12 30 ec ff <0f> 0b 8b 85 7c ff ff ff ba ea ff ff ff 4c 8b 5d d0 89 45 c4 e9 12 RSP: 0018:ffff8881db90f8f8 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881e83a3e00 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8767b580 RDI: ffffffff8a1889a0 RBP: ffff8881db90f9b8 R08: ffffed103ed05089 R09: ffffed103ed05088 R10: ffffed103ed05088 R11: ffff8881f6828447 R12: 00000000000000c0 R13: ffff8881f2942000 R14: ffff8881d24dfcc0 R15: ffff8881e83a3d40 FS: 00007f59ab5c3700(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe0de93c17 CR3: 00000001f33e1005 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kcm_sendmsg+0x1897/0x25b0 net/kcm/kcmsock.c:1035 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xb5/0xf0 net/socket.c:661 sock_write_iter+0x215/0x420 net/socket.c:966 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x443/0x890 fs/read_write.c:487 vfs_write+0x150/0x4d0 fs/read_write.c:549 ksys_write+0x103/0x260 fs/read_write.c:599 __do_sys_write fs/read_write.c:611 [inline] __se_sys_write fs/read_write.c:608 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:608 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4641a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f59ab5c3198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000c4c RCX: 00000000004641a9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bfa0 R13: 00007f59ab5c36bc R14: 00000000ffffffff R15: 0000000000000003 irq event stamp: 3068 hardirqs last enabled at (3067): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline] hardirqs last enabled at (3067): [] _raw_spin_unlock_irq+0x27/0x80 kernel/locking/spinlock.c:192 hardirqs last disabled at (3068): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (3052): [] spin_unlock_bh include/linux/spinlock.h:374 [inline] softirqs last enabled at (3052): [] release_sock+0x11f/0x180 net/core/sock.c:2892 softirqs last disabled at (3050): [] spin_lock_bh include/linux/spinlock.h:334 [inline] softirqs last disabled at (3050): [] release_sock+0x1b/0x180 net/core/sock.c:2879 ---[ end trace 74ab67240011ee0e ]--- KCM: Hard failure on kcm_write_msgs ------------[ cut here ]------------ WARNING: CPU: 1 PID: 7515 at net/kcm/kcmsock.c:629 kcm_write_msgs.cold.34+0x5f/0x13e net/kcm/kcmsock.c:629 Modules linked in: CPU: 1 PID: 7515 Comm: syz-executor.0 Tainted: G W 4.19.206-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kcm_write_msgs.cold.34+0x5f/0x13e net/kcm/kcmsock.c:629 Code: c7 c7 60 cf d0 87 4c 89 5d d0 e8 2d 30 ec ff 0f 0b 4c 8b 5d d0 e9 b8 bd 5f ff 48 c7 c7 60 cf d0 87 4c 89 5d d0 e8 12 30 ec ff <0f> 0b 8b 85 7c ff ff ff ba ea ff ff ff 4c 8b 5d d0 89 45 c4 e9 12 RSP: 0018:ffff8881d9e2f8f8 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881df608100 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8767b580 RDI: ffffffff8a1889a0 RBP: ffff8881d9e2f9b8 R08: ffffed103ed25089 R09: ffffed103ed25088 R10: ffffed103ed25088 R11: ffff8881f6928447 R12: 00000000000000c0 R13: ffff8881d277b840 R14: ffff8881f4740100 R15: ffff8881df608040 FS: 00007f2bbc860700(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000380 CR3: 00000001d63ea001 CR4: 00000000001606e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kcm_sendmsg+0x1897/0x25b0 net/kcm/kcmsock.c:1035 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xb5/0xf0 net/socket.c:661 sock_write_iter+0x215/0x420 net/socket.c:966 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x443/0x890 fs/read_write.c:487 vfs_write+0x150/0x4d0 fs/read_write.c:549 ksys_write+0x103/0x260 fs/read_write.c:599 __do_sys_write fs/read_write.c:611 [inline] __se_sys_write fs/read_write.c:608 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:608 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4641a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f2bbc860198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000c4c RCX: 00000000004641a9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bfa0 R13: 00007f2bbc8606bc R14: 00000000ffffffff R15: 0000000000000003 irq event stamp: 3116 hardirqs last enabled at (3115): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline] hardirqs last enabled at (3115): [] _raw_spin_unlock_irq+0x27/0x80 kernel/locking/spinlock.c:192 hardirqs last disabled at (3116): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (3100): [] spin_unlock_bh include/linux/spinlock.h:374 [inline] softirqs last enabled at (3100): [] release_sock+0x11f/0x180 net/core/sock.c:2892 softirqs last disabled at (3098): [] spin_lock_bh include/linux/spinlock.h:334 [inline] softirqs last disabled at (3098): [] release_sock+0x1b/0x180 net/core/sock.c:2879 ---[ end trace 74ab67240011ee0f ]--- KCM: Hard failure on kcm_write_msgs ------------[ cut here ]------------ WARNING: CPU: 0 PID: 7644 at net/kcm/kcmsock.c:629 kcm_write_msgs.cold.34+0x5f/0x13e net/kcm/kcmsock.c:629 Modules linked in: CPU: 0 PID: 7644 Comm: syz-executor.0 Tainted: G W 4.19.206-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kcm_write_msgs.cold.34+0x5f/0x13e net/kcm/kcmsock.c:629 Code: c7 c7 60 cf d0 87 4c 89 5d d0 e8 2d 30 ec ff 0f 0b 4c 8b 5d d0 e9 b8 bd 5f ff 48 c7 c7 60 cf d0 87 4c 89 5d d0 e8 12 30 ec ff <0f> 0b 8b 85 7c ff ff ff ba ea ff ff ff 4c 8b 5d d0 89 45 c4 e9 12 RSP: 0018:ffff8881e5f078f8 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881e8f40100 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8767b580 RDI: ffffffff8a1889a0 RBP: ffff8881e5f079b8 R08: ffffed103ed05089 R09: ffffed103ed05088 R10: ffffed103ed05088 R11: ffff8881f6828447 R12: 00000000000000c0 R13: ffff8881e7fee700 R14: ffff8881ed448b40 R15: ffff8881e8f40040 FS: 00007f2bbc881700(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000380 CR3: 00000001f4b11002 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kcm_sendmsg+0x1897/0x25b0 net/kcm/kcmsock.c:1035 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xb5/0xf0 net/socket.c:661 sock_write_iter+0x215/0x420 net/socket.c:966 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x443/0x890 fs/read_write.c:487 vfs_write+0x150/0x4d0 fs/read_write.c:549 ksys_write+0x103/0x260 fs/read_write.c:599 __do_sys_write fs/read_write.c:611 [inline] __se_sys_write fs/read_write.c:608 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:608 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4641a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f2bbc881198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000c4c RCX: 00000000004641a9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007f2bbc8816bc R14: 00000000ffffffff R15: 0000000000000003 irq event stamp: 6036 hardirqs last enabled at (6035): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline] hardirqs last enabled at (6035): [] _raw_spin_unlock_irq+0x27/0x80 kernel/locking/spinlock.c:192 hardirqs last disabled at (6036): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (6018): [] spin_unlock_bh include/linux/spinlock.h:374 [inline] softirqs last enabled at (6018): [] release_sock+0x11f/0x180 net/core/sock.c:2892 softirqs last disabled at (6016): [] spin_lock_bh include/linux/spinlock.h:334 [inline] softirqs last disabled at (6016): [] release_sock+0x1b/0x180 net/core/sock.c:2879 ---[ end trace 74ab67240011ee10 ]--- KCM: Hard failure on kcm_write_msgs hrtimer: interrupt took 506007 ns ------------[ cut here ]------------ WARNING: CPU: 1 PID: 7720 at net/kcm/kcmsock.c:629 kcm_write_msgs.cold.34+0x5f/0x13e net/kcm/kcmsock.c:629 Modules linked in: CPU: 1 PID: 7720 Comm: syz-executor.3 Tainted: G W 4.19.206-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kcm_write_msgs.cold.34+0x5f/0x13e net/kcm/kcmsock.c:629 Code: c7 c7 60 cf d0 87 4c 89 5d d0 e8 2d 30 ec ff 0f 0b 4c 8b 5d d0 e9 b8 bd 5f ff 48 c7 c7 60 cf d0 87 4c 89 5d d0 e8 12 30 ec ff <0f> 0b 8b 85 7c ff ff ff ba ea ff ff ff 4c 8b 5d d0 89 45 c4 e9 12 RSP: 0018:ffff8881dd9df8f8 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881e63b0100 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8767b580 RDI: ffffffff8a1889a0 RBP: ffff8881dd9df9b8 R08: ffffed103ed25089 R09: ffffed103ed25088 R10: ffffed103ed25088 R11: ffff8881f6928447 R12: 00000000000000c0 R13: ffff8881e2c43900 R14: ffff8881e9ea76c0 R15: ffff8881e63b0040 FS: 00007fd470b46700(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002018d000 CR3: 00000001d7446001 CR4: 00000000001606e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kcm_sendmsg+0x1897/0x25b0 net/kcm/kcmsock.c:1035 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xb5/0xf0 net/socket.c:661 sock_write_iter+0x215/0x420 net/socket.c:966 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x443/0x890 fs/read_write.c:487 vfs_write+0x150/0x4d0 fs/read_write.c:549 ksys_write+0x103/0x260 fs/read_write.c:599 __do_sys_write fs/read_write.c:611 [inline] __se_sys_write fs/read_write.c:608 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:608 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4641a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fd470b46198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000c4c RCX: 00000000004641a9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007fd470b466bc R14: 00000000ffffffff R15: 0000000000000003 irq event stamp: 10668 hardirqs last enabled at (10667): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline] hardirqs last enabled at (10667): [] _raw_spin_unlock_irq+0x27/0x80 kernel/locking/spinlock.c:192 hardirqs last disabled at (10668): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (10652): [] spin_unlock_bh include/linux/spinlock.h:374 [inline] softirqs last enabled at (10652): [] release_sock+0x11f/0x180 net/core/sock.c:2892 softirqs last disabled at (10650): [] spin_lock_bh include/linux/spinlock.h:334 [inline] softirqs last disabled at (10650): [] release_sock+0x1b/0x180 net/core/sock.c:2879 ---[ end trace 74ab67240011ee11 ]--- KCM: Hard failure on kcm_write_msgs ------------[ cut here ]------------ WARNING: CPU: 0 PID: 7897 at net/kcm/kcmsock.c:629 kcm_write_msgs.cold.34+0x5f/0x13e net/kcm/kcmsock.c:629 Modules linked in: CPU: 0 PID: 7897 Comm: syz-executor.1 Tainted: G W 4.19.206-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kcm_write_msgs.cold.34+0x5f/0x13e net/kcm/kcmsock.c:629 Code: c7 c7 60 cf d0 87 4c 89 5d d0 e8 2d 30 ec ff 0f 0b 4c 8b 5d d0 e9 b8 bd 5f ff 48 c7 c7 60 cf d0 87 4c 89 5d d0 e8 12 30 ec ff <0f> 0b 8b 85 7c ff ff ff ba ea ff ff ff 4c 8b 5d d0 89 45 c4 e9 12 RSP: 0018:ffff8881c32778f8 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881dd4d8600 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8767b580 RDI: ffffffff8a1889a0 RBP: ffff8881c32779b8 R08: ffffed103ed05089 R09: ffffed103ed05088 R10: ffffed103ed05088 R11: ffff8881f6828447 R12: 00000000000000c0 R13: ffff8881dde63240 R14: ffff8881df5926c0 R15: ffff8881dd4d8540 FS: 00007f60f37ec700(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000202bf000 CR3: 00000001df441003 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kcm_sendmsg+0x1897/0x25b0 net/kcm/kcmsock.c:1035 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xb5/0xf0 net/socket.c:661 sock_write_iter+0x215/0x420 net/socket.c:966 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x443/0x890 fs/read_write.c:487 vfs_write+0x150/0x4d0 fs/read_write.c:549 ksys_write+0x103/0x260 fs/read_write.c:599 __do_sys_write fs/read_write.c:611 [inline] __se_sys_write fs/read_write.c:608 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:608 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4641a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f60f37ec198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000c4c RCX: 00000000004641a9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007f60f37ec6bc R14: 00000000ffffffff R15: 0000000000000003 irq event stamp: 6016 hardirqs last enabled at (6015): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline] hardirqs last enabled at (6015): [] _raw_spin_unlock_irq+0x27/0x80 kernel/locking/spinlock.c:192 hardirqs last disabled at (6016): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (6000): [] spin_unlock_bh include/linux/spinlock.h:374 [inline] softirqs last enabled at (6000): [] release_sock+0x11f/0x180 net/core/sock.c:2892 softirqs last disabled at (5998): [] spin_lock_bh include/linux/spinlock.h:334 [inline] softirqs last disabled at (5998): [] release_sock+0x1b/0x180 net/core/sock.c:2879 ---[ end trace 74ab67240011ee12 ]--- KCM: Hard failure on kcm_write_msgs ------------[ cut here ]------------ WARNING: CPU: 1 PID: 7968 at net/kcm/kcmsock.c:629 kcm_write_msgs.cold.34+0x5f/0x13e net/kcm/kcmsock.c:629 Modules linked in: CPU: 1 PID: 7968 Comm: syz-executor.1 Tainted: G W 4.19.206-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kcm_write_msgs.cold.34+0x5f/0x13e net/kcm/kcmsock.c:629 Code: c7 c7 60 cf d0 87 4c 89 5d d0 e8 2d 30 ec ff 0f 0b 4c 8b 5d d0 e9 b8 bd 5f ff 48 c7 c7 60 cf d0 87 4c 89 5d d0 e8 12 30 ec ff <0f> 0b 8b 85 7c ff ff ff ba ea ff ff ff 4c 8b 5d d0 89 45 c4 e9 12 RSP: 0018:ffff8881c33478f8 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881db38c880 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8767b580 RDI: ffffffff8a1889a0 RBP: ffff8881c33479b8 R08: ffffed103ed25089 R09: ffffed103ed25088 R10: ffffed103ed25088 R11: ffff8881f6928447 R12: 00000000000000c0 R13: ffff8881dc754140 R14: ffff8881c263b640 R15: ffff8881db38c7c0 FS: 00007f60f37ec700(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe29b032c8 CR3: 00000001df441002 CR4: 00000000001606e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kcm_sendmsg+0x1897/0x25b0 net/kcm/kcmsock.c:1035 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xb5/0xf0 net/socket.c:661 sock_write_iter+0x215/0x420 net/socket.c:966 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x443/0x890 fs/read_write.c:487 vfs_write+0x150/0x4d0 fs/read_write.c:549 ksys_write+0x103/0x260 fs/read_write.c:599 __do_sys_write fs/read_write.c:611 [inline] __se_sys_write fs/read_write.c:608 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:608 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4641a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f60f37ec198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000c4c RCX: 00000000004641a9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007f60f37ec6bc R14: 00000000ffffffff R15: 0000000000000003 irq event stamp: 8116 hardirqs last enabled at (8115): [] __free_pages_ok+0x630/0xd80 mm/page_alloc.c:1286 hardirqs last disabled at (8116): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (8090): [] __do_softirq+0x62d/0x919 kernel/softirq.c:318 softirqs last disabled at (8067): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (8067): [] irq_exit+0x17f/0x1c0 kernel/softirq.c:412 ---[ end trace 74ab67240011ee13 ]--- KCM: Hard failure on kcm_write_msgs ------------[ cut here ]------------ WARNING: CPU: 0 PID: 8011 at net/kcm/kcmsock.c:629 kcm_write_msgs.cold.34+0x5f/0x13e net/kcm/kcmsock.c:629 Modules linked in: CPU: 0 PID: 8011 Comm: syz-executor.0 Tainted: G W 4.19.206-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kcm_write_msgs.cold.34+0x5f/0x13e net/kcm/kcmsock.c:629 Code: c7 c7 60 cf d0 87 4c 89 5d d0 e8 2d 30 ec ff 0f 0b 4c 8b 5d d0 e9 b8 bd 5f ff 48 c7 c7 60 cf d0 87 4c 89 5d d0 e8 12 30 ec ff <0f> 0b 8b 85 7c ff ff ff ba ea ff ff ff 4c 8b 5d d0 89 45 c4 e9 12 RSP: 0018:ffff8881c228f8f8 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881da9845c0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8767b580 RDI: ffffffff8a1889a0 RBP: ffff8881c228f9b8 R08: ffffed103ed05089 R09: ffffed103ed05088 R10: ffffed103ed05088 R11: ffff8881f6828447 R12: 00000000000000c0 R13: ffff8881cea7a040 R14: ffff8881c263ab40 R15: ffff8881da984500 FS: 00007f2bbc860700(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe0dfc5c60 CR3: 00000001de443003 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kcm_sendmsg+0x1897/0x25b0 net/kcm/kcmsock.c:1035 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xb5/0xf0 net/socket.c:661 sock_write_iter+0x215/0x420 net/socket.c:966 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x443/0x890 fs/read_write.c:487 vfs_write+0x150/0x4d0 fs/read_write.c:549 ksys_write+0x103/0x260 fs/read_write.c:599 __do_sys_write fs/read_write.c:611 [inline] __se_sys_write fs/read_write.c:608 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:608 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4641a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f2bbc860198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000c4c RCX: 00000000004641a9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bfa0 R13: 00007f2bbc8606bc R14: 00000000ffffffff R15: 0000000000000003 irq event stamp: 5664 hardirqs last enabled at (5663): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline] hardirqs last enabled at (5663): [] _raw_spin_unlock_irq+0x27/0x80 kernel/locking/spinlock.c:192 hardirqs last disabled at (5664): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (5650): [] spin_unlock_bh include/linux/spinlock.h:374 [inline] softirqs last enabled at (5650): [] release_sock+0x11f/0x180 net/core/sock.c:2892 softirqs last disabled at (5648): [] spin_lock_bh include/linux/spinlock.h:334 [inline] softirqs last disabled at (5648): [] release_sock+0x1b/0x180 net/core/sock.c:2879 ---[ end trace 74ab67240011ee14 ]--- KCM: Hard failure on kcm_write_msgs ------------[ cut here ]------------ WARNING: CPU: 0 PID: 8062 at net/kcm/kcmsock.c:629 kcm_write_msgs.cold.34+0x5f/0x13e net/kcm/kcmsock.c:629 Modules linked in: CPU: 0 PID: 8062 Comm: syz-executor.5 Tainted: G W 4.19.206-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kcm_write_msgs.cold.34+0x5f/0x13e net/kcm/kcmsock.c:629 Code: c7 c7 60 cf d0 87 4c 89 5d d0 e8 2d 30 ec ff 0f 0b 4c 8b 5d d0 e9 b8 bd 5f ff 48 c7 c7 60 cf d0 87 4c 89 5d d0 e8 12 30 ec ff <0f> 0b 8b 85 7c ff ff ff ba ea ff ff ff 4c 8b 5d d0 89 45 c4 e9 12 RSP: 0018:ffff8881d84778f8 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881da069880 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8767b580 RDI: ffffffff8a1889a0 RBP: ffff8881d84779b8 R08: ffffed103ed05089 R09: ffffed103ed05088 R10: ffffed103ed05088 R11: ffff8881f6828447 R12: 00000000000000c0 R13: ffff8881dc5d39c0 R14: ffff8881c263a040 R15: ffff8881da0697c0 FS: 00007f6a55b3d700(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000053c000 CR3: 00000001dbbe8005 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kcm_sendmsg+0x1897/0x25b0 net/kcm/kcmsock.c:1035 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xb5/0xf0 net/socket.c:661 sock_write_iter+0x215/0x420 net/socket.c:966 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x443/0x890 fs/read_write.c:487 vfs_write+0x150/0x4d0 fs/read_write.c:549 ksys_write+0x103/0x260 fs/read_write.c:599 __do_sys_write fs/read_write.c:611 [inline] __se_sys_write fs/read_write.c:608 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:608 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4641a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f6a55b3d198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000c4c RCX: 00000000004641a9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007f6a55b3d6bc R14: 00000000ffffffff R15: 0000000000000003 irq event stamp: 6326 hardirqs last enabled at (6325): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline] hardirqs last enabled at (6325): [] _raw_spin_unlock_irq+0x27/0x80 kernel/locking/spinlock.c:192 hardirqs last disabled at (6326): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (6310): [] spin_unlock_bh include/linux/spinlock.h:374 [inline] softirqs last enabled at (6310): [] release_sock+0x11f/0x180 net/core/sock.c:2892 softirqs last disabled at (6308): [] spin_lock_bh include/linux/spinlock.h:334 [inline] softirqs last disabled at (6308): [] release_sock+0x1b/0x180 net/core/sock.c:2879 ---[ end trace 74ab67240011ee15 ]--- KCM: Hard failure on kcm_write_msgs ------------[ cut here ]------------