last executing test programs: 6.298736936s ago: executing program 2: sendmsg$nl_xfrm(0xffffffffffffffff, 0x0, 0x0) bpf$MAP_CREATE(0x0, 0x0, 0x0) r0 = bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, 0x0, 0x0) bpf$ENABLE_STATS(0x20, 0x0, 0x0) openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000000)='cgroup.controllers\x00', 0x275a, 0x0) r1 = socket$netlink(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, &(0x7f0000000340)={'bridge_slave_0\x00'}) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000540)={&(0x7f0000000040)='block_plug\x00'}, 0x10) openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000240)='cgroup.controllers\x00', 0x26e1, 0x0) r2 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='cgroup.controllers\x00', 0x7a05, 0x1700) write$cgroup_int(r2, 0x0, 0x0) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f00000007c0)={0x0}, 0x10) r3 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000140)='blkio.bfq.io_service_bytes\x00', 0x275a, 0x0) setsockopt$SO_ATTACH_FILTER(r1, 0x1, 0x1a, &(0x7f00000001c0)={0x3, &(0x7f0000000280)=[{0xe4, 0xa5, 0x8, 0x7}, {0x4, 0x9, 0xf2, 0xfffffff7}, {0x0, 0x9, 0x70, 0x1c7}]}, 0x10) ioctl$FS_IOC_SETFLAGS(r0, 0x40086602, &(0x7f0000000040)=0x10000) write$cgroup_int(r3, &(0x7f0000000000), 0xffffff6a) ioctl$FS_IOC_RESVSP(r3, 0x40305839, &(0x7f0000000300)={0x1100, 0x0, 0x0, 0x10000}) ioctl$FIBMAP(r3, 0x1, &(0x7f0000000080)) r4 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000140)='cgroup.controllers\x00', 0x275a, 0x0) mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x0, 0x10012, r4, 0x0) ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, &(0x7f0000000040)={'sit0\x00', 0x0}) ioctl$sock_inet6_SIOCSIFDSTADDR(0xffffffffffffffff, 0x8918, &(0x7f0000000080)={@local, 0x0, r5}) write$cgroup_int(r3, 0x0, 0x0) syz_genetlink_get_family_id$nl80211(&(0x7f0000000080), 0xffffffffffffffff) syz_init_net_socket$nl_rdma(0x10, 0x3, 0x10) socket$nl_generic(0x10, 0x3, 0x10) 6.087574527s ago: executing program 0: mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0) r0 = userfaultfd(0x80001) ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f00000000c0)={0xaa, 0x19}) ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000100)={{&(0x7f0000010000/0x1000)=nil, 0x1000}, 0x5}) madvise(&(0x7f0000000000/0x600000)=nil, 0x600002, 0x4) mmap(&(0x7f0000000000/0xff5000)=nil, 0xff5000, 0x0, 0x200000005c831, 0xffffffffffffffff, 0x0) close(r0) 5.493574307s ago: executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$netlbl_unlabel(&(0x7f0000000440), r0) sendmsg$NLBL_UNLABEL_C_STATICLISTDEF(r0, &(0x7f0000000500)={0x0, 0x0, &(0x7f00000004c0)={&(0x7f00000001c0)={0x14, r1, 0xc8036ab6d6cbef07}, 0x14}}, 0x0) syz_genetlink_get_family_id$ieee802154(&(0x7f0000000e80), r0) 5.231748592s ago: executing program 2: prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0) sched_setscheduler(0x0, 0x1, &(0x7f0000000080)=0x7) r0 = getpid() sched_setscheduler(r0, 0x2, &(0x7f0000000200)=0x4) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000200)={0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r1, &(0x7f000057eff8)=@abs, 0x6e) sendmmsg$unix(r2, &(0x7f0000000000), 0x651, 0x0) recvmmsg(r1, &(0x7f00000000c0), 0x10106, 0x2, 0x0) bpf$MAP_CREATE_RINGBUF(0x0, &(0x7f0000000180)={0x1b, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x48) ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, 0x0) setsockopt$packet_int(0xffffffffffffffff, 0x107, 0x0, 0x0, 0x0) r3 = socket$nl_generic(0x10, 0x3, 0x10) r4 = gettid() sendmsg$nl_generic(r3, &(0x7f0000000100)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000500)=ANY=[@ANYBLOB="1c00000041000701ffffffffffdbdf25017c000008000100", @ANYRES32=r4], 0x1c}}, 0x0) 4.166226663s ago: executing program 2: futex(0x0, 0x0, 0x0, 0x0, 0x0, 0x0) ioctl$TCFLSH(0xffffffffffffffff, 0x540b, 0x0) r0 = creat(&(0x7f0000000080)='./file0\x00', 0x0) fallocate(r0, 0x0, 0x0, 0x8020003) lchown(&(0x7f0000001640)='./file0\x00', 0x0, 0x0) lsetxattr$trusted_overlay_nlink(&(0x7f0000001540)='./file0\x00', &(0x7f0000001580), 0x0, 0x0, 0x2) 4.028281641s ago: executing program 2: r0 = gettid() timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r0}, &(0x7f0000000040)) r1 = signalfd(0xffffffffffffffff, &(0x7f0000000000), 0x8) readv(r1, 0x0, 0x0) close(r1) timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x989680}, {0x0, 0x3938700}}, 0x0) rt_sigreturn() mlockall(0x1) mremap(&(0x7f0000ff5000/0x2000)=nil, 0x2000, 0x5000000, 0x3, &(0x7f0000ffd000/0x1000)=nil) statx(0xffffffffffffff9c, 0x0, 0x4000, 0x0, 0x0) 3.957878724s ago: executing program 0: r0 = bpf$PROG_LOAD(0x5, &(0x7f0000000100)={0x1f, 0x5, &(0x7f0000000000)=ANY=[@ANYBLOB="1800000000000000000000000000030085000000a8000000850000000800000095"], &(0x7f0000000040)='syzkaller\x00', 0x0, 0x0, 0x0, 0x0, 0x1f, '\x00', 0x0, 0x0, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x90) bpf$BPF_PROG_TEST_RUN(0xa, &(0x7f0000000340)={r0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x48) r1 = bpf$MAP_CREATE(0x0, &(0x7f00000000c0)=@base={0x1b, 0x0, 0x0, 0x8000}, 0x48) r2 = bpf$PROG_LOAD(0x5, &(0x7f0000000100)={0x1f, 0x8, &(0x7f0000000000)=@framed={{}, [@call={0x85, 0x0, 0x0, 0xa8}, @ringbuf_query={{0x18, 0x1, 0x1, 0x0, r1}}]}, &(0x7f0000000700)='syzkaller\x00', 0x0, 0x0, 0x0, 0x0, 0x1f, '\x00', 0x0, 0x0, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x90) bpf$BPF_PROG_TEST_RUN(0xa, &(0x7f0000000340)={r2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x48) r3 = socket(0x10, 0x3, 0x0) sendmsg$nl_route(0xffffffffffffffff, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000000180)={0x0, 0x20}}, 0x0) setsockopt$netlink_NETLINK_TX_RING(r3, 0x10e, 0xc, &(0x7f0000000040)={0x8604}, 0x10) r4 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$NFT_BATCH(r4, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000400)={{0x14}, [@NFT_MSG_NEWTABLE={0x20, 0x0, 0xa, 0x301, 0x0, 0x0, {0x1}, [@NFTA_TABLE_NAME={0x9, 0x1, 'syz0\x00'}]}, @NFT_MSG_NEWCHAIN={0x40, 0x3, 0xa, 0x201, 0x0, 0x0, {0x1}, [@NFTA_CHAIN_NAME={0x9, 0x3, 'syz2\x00'}, @NFTA_CHAIN_HOOK={0x14, 0x4, 0x0, 0x1, [@NFTA_HOOK_PRIORITY={0x8}, @NFTA_HOOK_HOOKNUM={0x8}]}, @NFTA_CHAIN_TABLE={0x9, 0x1, 'syz0\x00'}]}, @NFT_MSG_NEWRULE={0x50, 0x6, 0xa, 0x401, 0x0, 0x0, {0x1}, [@NFTA_RULE_CHAIN_ID={0x8}, @NFTA_RULE_TABLE={0x9, 0x1, 'syz0\x00'}, @NFTA_RULE_EXPRESSIONS={0x28, 0x4, 0x0, 0x1, [{0x24, 0x1, 0x0, 0x1, @socket={{0xb}, @val={0x14, 0x2, 0x0, 0x1, [@NFTA_SOCKET_DREG={0x8, 0x2, 0x1, 0x0, 0xe}, @NFTA_SOCKET_KEY={0x8}]}}}]}]}], {0x14}}, 0xd8}}, 0x0) socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nl80211(&(0x7f0000000040), 0xffffffffffffffff) syz_emit_ethernet(0x3a, &(0x7f00000000c0)={@multicast, @remote, @void, {@ipv4={0x800, @udp={{0x5, 0x4, 0x0, 0x0, 0x2c, 0x0, 0x0, 0x0, 0x11, 0x0, @private=0xa010101, @local}, {0x0, 0x4e20, 0x18, 0x0, @wg=@data}}}}}, 0x0) 3.790087558s ago: executing program 0: syz_open_dev$vim2m(&(0x7f0000000000), 0x1, 0x2) ioctl$vim2m_VIDIOC_ENUM_FMT(0xffffffffffffffff, 0xc0405602, &(0x7f0000000140)={0xa, 0x1, 0x0, "18e889d15b38429faa8ff62438eaed752e68f3a6d09382b392b049e33958b16c"}) 3.615238112s ago: executing program 0: unshare(0x68060200) socket$inet_udplite(0x2, 0x2, 0x88) syz_emit_ethernet(0x4a, &(0x7f0000000040)={@local, @local, @void, {@ipv6={0x86dd, @tcp={0x0, 0x6, "001040", 0x14, 0x6, 0x0, @initdev={0xfe, 0x88, '\x00', 0x0, 0x0}, @local, {[], {{0x0, 0x0, 0x41424344, 0x41424344, 0x0, 0x2, 0x5}}}}}}}, 0x0) syz_open_procfs(0x0, 0x0) r0 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000000)='cpuacct.usage_percpu_sys\x00', 0x275a, 0x0) setsockopt$EBT_SO_SET_ENTRIES(0xffffffffffffffff, 0x0, 0x80, &(0x7f0000000640)=@broute={'broute\x00', 0x20, 0x1, 0x170, [0x0, 0x0, 0x0, 0x0, 0x0, 0x200006c0], 0x0, 0x0, &(0x7f00000006c0)=ANY=[@ANYBLOB="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"]}, 0x1d9) write$binfmt_script(r0, &(0x7f0000000000), 0xfea7) mmap(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x1, 0x10012, r0, 0x0) r1 = socket$inet_tcp(0x2, 0x1, 0x0) setsockopt$EBT_SO_SET_ENTRIES(r1, 0x0, 0x80, &(0x7f0000000640)=@broute={'broute\x00', 0x7001, 0x1, 0x170, [], 0x0, 0x0, 0x0}, 0x1e8) 3.300399322s ago: executing program 3: r0 = msgget$private(0x0, 0x0) socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000080)={0xffffffffffffffff}) recvmsg$unix(r1, &(0x7f0000000200)={0x0, 0x0, &(0x7f00000001c0)=[{&(0x7f00000000c0)=""/47, 0x2f}], 0x1}, 0x0) r2 = gettid() timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r2}, &(0x7f0000bbdffc)) pipe2$9p(&(0x7f00000000c0)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$P9_RSETATTR(r3, &(0x7f0000000000)={0x7}, 0x69ff9a93bfc25838) write$P9_RLERRORu(r3, 0x0, 0x0) timer_settime(0x0, 0x0, &(0x7f0000000300)={{}, {0x0, 0x3938700}}, 0x0) close(0xffffffffffffffff) msgrcv(r0, 0x0, 0x0, 0x0, 0x0) rt_sigreturn() futex(&(0x7f0000004100)=0x2, 0x0, 0x2, 0x0, 0x0, 0x0) inotify_init1(0x0) 3.014337798s ago: executing program 3: bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, 0x0, 0x0) r0 = openat$procfs(0xffffffffffffff9c, 0x0, 0x0, 0x0) read$FUSE(r0, &(0x7f0000000200)={0x2020}, 0x202e) syz_mount_image$fuse(0x0, &(0x7f00000000c0)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) mount(&(0x7f0000000300), &(0x7f0000000140)='./file0\x00', &(0x7f00000001c0)='binder\x00', 0x0, 0x0) socket$nl_route(0x10, 0x3, 0x0) bpf$PROG_LOAD(0x5, 0x0, 0x0) readv(0xffffffffffffffff, 0x0, 0x0) bpf$MAP_CREATE(0x0, &(0x7f00000009c0)=@base={0x6, 0x5, 0x2, 0x7, 0x0, 0xffffffffffffffff, 0x3, '\x00', 0x0, 0xffffffffffffffff, 0x1, 0x4000}, 0x48) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000080)={&(0x7f0000000000)='kmem_cache_free\x00'}, 0x10) open(&(0x7f0000000100)='./file0\x00', 0x80ff, 0x0) ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, 0x0) prlimit64(0x0, 0xe, &(0x7f0000000140)={0xc, 0x8b}, 0x0) sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x9) r1 = getpid() sched_setscheduler(r1, 0x2, &(0x7f0000000200)=0x4) timer_create(0x0, &(0x7f0000000680)={0x0, 0x21, 0x0, @tid=0xffffffffffffffff}, &(0x7f0000000100)) timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x9}}, 0x0) pipe(&(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) socketpair$unix(0x1, 0x5, 0x0, &(0x7f00000000c0)={0xffffffffffffffff, 0xffffffffffffffff}) pipe(&(0x7f0000000200)={0xffffffffffffffff, 0xffffffffffffffff}) splice(r3, 0x0, r5, 0x0, 0x8000f28, 0x0) splice(r4, 0x0, r2, 0x0, 0x7f, 0x0) 2.663883586s ago: executing program 0: recvmmsg(0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0) openat$pidfd(0xffffffffffffff9c, &(0x7f00000002c0), 0x8440, 0x0) 2.124946007s ago: executing program 3: munmap(&(0x7f0000001000/0x3000)=nil, 0x3000) r0 = socket$inet6_tcp(0xa, 0x1, 0x0) setsockopt$inet6_tcp_int(r0, 0x6, 0x13, &(0x7f0000000080)=0x100000001, 0x4) connect$inet6(r0, &(0x7f0000000200)={0xa, 0x0, 0x0, @empty}, 0x1c) setsockopt$inet6_tcp_TCP_ULP(r0, 0x6, 0x1f, &(0x7f0000000540), 0x4) setsockopt$inet6_tcp_TLS_TX(r0, 0x11a, 0x1, &(0x7f00000000c0)=@gcm_128={{0x303, 0x37}, "475566172f45f011", "bd14060000000000000092f94413582b", "a4774ec6", "15b188e5e74e13ed"}, 0x28) writev(r0, &(0x7f0000000040)=[{&(0x7f00000001c0)="75e4d022c3d3d0516e8aa185cdff851306d4b01da1b5d3f0eaa6e8a3a3e92cf2e69cf3d0f1a079776c52eb5d68442399f85a369512996ea041fa7c684503a851ba5876a222bc89583a0301c51eb5ecfc4f5950ed240ccab6724fb961dc2eb11fcf39ce7a7526089024a041cba1f17cce862ee33d748704813cfcac7b7de85081143d0d4cb01d51c4d80d1978f319ef8166d62f7e124db27d2f0360fadf4696c908423bfa6af51d63105e837b7996063d242026bfa51c114a427731d806", 0x7ffff000}, {&(0x7f0000000000)="2df24d8a", 0x4}], 0x2) 2.026368178s ago: executing program 4: r0 = socket$kcm(0x10, 0x2, 0x0) sendmsg$inet(r0, &(0x7f0000000080)={0x0, 0x74, &(0x7f0000000100)=[{&(0x7f00000001c0)="5c00000012006bab9a3fe3d86e17aa0a046b876c1d0048007ea60864160af36504001a0038001d001931a0e69ee517d34460bc06000000a705251e6182949a3651f60a84c9f4d4938037e70e4509c5bb", 0x33fe0}], 0x1, 0x0, 0x0, 0x1f00c00e}, 0x0) recvmsg$kcm(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000004140)=[{&(0x7f0000000240)=""/212, 0xd4}, {&(0x7f0000000a00)=""/242, 0xf2}, {&(0x7f0000001140)=""/4055, 0xfd7}, {&(0x7f00000003c0)=""/250, 0xfa}, {&(0x7f00000007c0)=""/191, 0xbf}, {&(0x7f0000000500)=""/211, 0xd3}, {&(0x7f0000000040)=""/20, 0x14}, {&(0x7f0000000940)=""/183, 0xb7}, {&(0x7f0000000c00)=""/110, 0x6e}, {&(0x7f0000000340)=""/36, 0x24}, {&(0x7f0000002140)=""/4096, 0x1000}, {&(0x7f0000003140)=""/4089, 0xff9}], 0xc}, 0x0) 1.987615963s ago: executing program 0: prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x20000008b}, 0x0) sched_setscheduler(0x0, 0x1, &(0x7f0000000080)=0x7) sched_setscheduler(0x0, 0x2, &(0x7f0000000200)=0x7) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000200)={0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r0, &(0x7f0000000180)=@abs, 0x6e) sendmmsg$unix(r1, &(0x7f00000bd000), 0x318, 0x0) recvmmsg(r0, &(0x7f00000000c0), 0x10106, 0x2, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000200)=0x4) r2 = add_key$keyring(&(0x7f00000003c0), &(0x7f0000000400)={'syz', 0x1}, 0x0, 0x0, 0xfffffffffffffffb) pipe2$watch_queue(&(0x7f0000000080)={0xffffffffffffffff, 0xffffffffffffffff}, 0x80) keyctl$KEYCTL_WATCH_KEY(0x20, r2, r3, 0x0) keyctl$KEYCTL_WATCH_KEY(0x20, r2, r4, 0xffffffffffffffff) 1.523030959s ago: executing program 4: io_submit(0x0, 0x0, &(0x7f00000001c0)) pipe2(&(0x7f0000000040)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) r1 = socket(0x1e, 0x4, 0x0) r2 = socket(0x1e, 0x4, 0x0) setsockopt$packet_tx_ring(r2, 0x10f, 0x87, &(0x7f0000000440)=@req={0x3fc}, 0x10) setsockopt$packet_tx_ring(r1, 0x10f, 0x87, &(0x7f0000000440)=@req={0x3fc}, 0x10) sendmmsg(r1, &(0x7f00000030c0)=[{{0x0, 0xa9cc7003, &(0x7f0000000400)=[{&(0x7f00000000c0)="ee", 0x101d0}], 0x1}}], 0x400000000000181, 0x9200000000000000) r3 = dup3(r2, r1, 0x0) recvmmsg$unix(r3, &(0x7f0000000e00), 0x0, 0x0, 0x0) sendto$packet(0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0) close_range(r0, 0xffffffffffffffff, 0x0) socket$l2tp6(0xa, 0x2, 0x73) 1.263022367s ago: executing program 4: r0 = syz_open_dev$I2C(&(0x7f0000000d80), 0x0, 0x0) ioctl$I2C_PEC(0xffffffffffffffff, 0x708, 0x6) ioctl$I2C_SMBUS(r0, 0x720, &(0x7f0000000000)={0x0, 0x0, 0x2, &(0x7f0000000100)={0x0, "fd5a44512b7e1b0020ed2abb4301002700004000"}}) 1.176413253s ago: executing program 3: syz_open_dev$vim2m(&(0x7f0000000000), 0x1, 0x2) ioctl$vim2m_VIDIOC_ENUM_FMT(0xffffffffffffffff, 0xc0405602, &(0x7f0000000140)={0xa, 0x1, 0x0, "18e889d15b38429faa8ff62438eaed752e68f3a6d09382b392b049e33958b16c"}) 608.103422ms ago: executing program 4: r0 = syz_open_dev$dri(&(0x7f00000000c0), 0x1ff, 0x0) r1 = syz_open_dev$dri(&(0x7f0000000080), 0x1, 0x0) ioctl$DRM_IOCTL_SET_CLIENT_CAP(r1, 0x4010640d, &(0x7f0000000000)={0x3, 0x2}) ioctl$DRM_IOCTL_MODE_GETPLANE(r1, 0xc02064b6, &(0x7f00000001c0)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) ioctl$DRM_IOCTL_MODE_GETPLANE(r0, 0xc02064b6, &(0x7f00000004c0)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) ioctl$DRM_IOCTL_MODE_SETCRTC(r0, 0xc06864a2, &(0x7f0000000400)={0x0, 0x0, r3, r2, 0x0, 0x0, 0x0, 0x4, {0x4, 0x1, 0x3, 0x69, 0x200, 0x0, 0x2, 0x5, 0x4cab, 0xe156, 0x0, 0x0, 0x3da, 0x0, "fe1d0e1cff001704000000341300"}}) 604.063139ms ago: executing program 1: prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000200)=0x4) write$dsp(0xffffffffffffffff, &(0x7f00000001c0)="5cba91a4", 0xffffffd9) ioctl$SNDCTL_DSP_RESET(0xffffffffffffffff, 0x80045017, 0x0) 603.836817ms ago: executing program 3: r0 = syz_genetlink_get_family_id$nl80211(&(0x7f00000003c0), 0xffffffffffffffff) r1 = socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NL80211_CMD_NEW_KEY(r1, &(0x7f00000006c0)={0x0, 0x0, &(0x7f0000000680)={&(0x7f0000000280)={0x44, r0, 0x801, 0x0, 0x0, {{}, {@val={0x8}, @void}}, [@NL80211_ATTR_KEY={0x28, 0x50, 0x0, 0x1, [@NL80211_KEY_CIPHER={0x8, 0x3, 0xfac02}, @NL80211_KEY_DATA_WEP104={0x11, 0x1, "cabee339084eeef16f162471f4"}, @NL80211_KEY_IDX={0x5}]}]}, 0x44}}, 0x0) 603.593354ms ago: executing program 4: socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000002c0)={0xffffffffffffffff}) r1 = socket$inet(0x2, 0x3, 0x2) setsockopt$inet_mreqsrc(r1, 0x0, 0x27, &(0x7f0000000280)={@multicast2, @local, @remote}, 0xc) syz_emit_ethernet(0x36, &(0x7f0000001800)={@link_local, @random="50a245d5cde0", @void, {@ipv4={0x800, @icmp={{0x5, 0x4, 0x0, 0x0, 0x28, 0x0, 0x0, 0x0, 0x2, 0x0, @empty, @broadcast}, @timestamp_reply={0x11, 0x0, 0x0, 0xe000, 0x2}}}}}, 0x0) ioctl$F2FS_IOC_MOVE_RANGE(r0, 0x541b, &(0x7f0000000200)={0xffffffffffffffff}) close_range(r2, 0xffffffffffffffff, 0x0) 603.386268ms ago: executing program 3: r0 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1) bind$bt_hci(r0, &(0x7f0000000100)={0x1f, 0xffff, 0x3}, 0x6) write$binfmt_misc(r0, 0x0, 0xd) r1 = socket$alg(0x26, 0x5, 0x0) bind$alg(0xffffffffffffffff, &(0x7f0000000080)={0x26, 'rng\x00', 0x0, 0x0, 'drbg_pr_ctr_aes192\x00'}, 0x58) setsockopt$ALG_SET_KEY(r1, 0x117, 0x1, 0x0, 0x1000000) openat$6lowpan_control(0xffffffffffffff9c, &(0x7f0000000140), 0x2, 0x0) r2 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f00000000c0)='memory.events\x00', 0x26e1, 0x0) r3 = fsopen(&(0x7f0000000280)='ceph\x00', 0x0) fsconfig$FSCONFIG_SET_STRING(r3, 0x1, &(0x7f0000000000)='source', &(0x7f0000000040)='c:::\x00', 0x0) gettid() fsconfig$FSCONFIG_CMD_CREATE(r3, 0x6, 0x0, 0x0, 0x0) fsconfig$FSCONFIG_SET_FD(r3, 0x5, &(0x7f00000002c0)='&#[\x10^\x00', 0x0, r2) 603.261405ms ago: executing program 1: openat$nullb(0xffffffffffffff9c, &(0x7f0000000040), 0x0, 0x0) r0 = socket(0x40000000015, 0x5, 0x0) connect$inet(r0, &(0x7f0000000180)={0x2, 0x0, @rand_addr=0x64010100}, 0x10) bind$inet(r0, &(0x7f0000000340)={0x2, 0x0, @loopback}, 0x57) sendmsg$xdp(r0, &(0x7f0000000100)={0x0, 0x0, 0x0}, 0x0) 602.939413ms ago: executing program 4: ioctl$sock_ipv4_tunnel_SIOCCHGTUNNEL(0xffffffffffffffff, 0x89f3, &(0x7f0000000000)={'sit0\x00', &(0x7f00000002c0)={'syztnl1\x00', 0x0, 0x0, 0x0, 0x0, 0x0, {{0x30, 0x4, 0x0, 0x0, 0xc0, 0x0, 0x0, 0x0, 0x0, 0x0, @broadcast, @remote, {[@timestamp={0x44, 0x18, 0x0, 0x0, 0x9, [0x401, 0x5, 0x0, 0x5, 0x4]}, @timestamp_prespec={0x44, 0x3c, 0xc0, 0x3, 0x1, [{@private=0xa010100}, {@multicast1}, {@remote}, {@dev={0xac, 0x14, 0x14, 0x32}, 0x659}, {@broadcast}, {@multicast2, 0xffd200}, {@private=0xa010100, 0x7}]}, @timestamp_prespec={0x44, 0x3c, 0x0, 0x3, 0x8, [{@dev}, {@remote}, {@multicast2}, {@private=0xa010101}, {}, {@broadcast, 0x52b1}, {@multicast2}]}, @noop, @noop, @noop, @rr={0x7, 0x17, 0x59, [@dev, @remote, @multicast1, @private=0xa010102, @remote]}]}}}}}) r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140), 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000040)='hugetlb.2MB.usage_in_bytes\x00', 0x275a, 0x0) write$binfmt_script(r2, &(0x7f0000000240), 0x208e24b) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x280000b, 0x13, r2, 0x0) r3 = dup(r1) r4 = ioctl$KVM_CREATE_VCPU(r3, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000080)={0x0, 0x2, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r4, &(0x7f0000000000/0x18000)=nil, &(0x7f0000000300)=[@text64={0x40, 0x0}], 0xffff, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, &(0x7f0000000200)=[@text64={0x40, 0x0}], 0x1, 0x0, 0x0, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000001c0)={0x0, 0xd000}) ioctl$KVM_NMI(r4, 0xae9a) ioctl$KVM_RUN(r4, 0xae80, 0x0) 510.17264ms ago: executing program 1: bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, 0x0, 0x0) r0 = socket$packet(0x11, 0x3, 0x300) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f00000001c0)={'geneve0\x00', 0x0}) sendto$packet(r0, &(0x7f0000000380)="363c8f3f8a5d66571e583e7c88a8de06", 0x10, 0x0, &(0x7f0000000200)={0x11, 0x0, r1, 0x1, 0x0, 0x6, @link_local}, 0x14) 382.158586ms ago: executing program 1: timer_create(0x0, &(0x7f0000000680)={0x0, 0x21, 0x0, @thr={0x0, 0x0}}, &(0x7f0000000040)) timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x9}}, 0x0) pselect6(0x0, 0x0, 0x0, 0x0, &(0x7f0000000280), &(0x7f0000000300)={&(0x7f00000002c0)={[0x1]}, 0x8}) 173.359106ms ago: executing program 1: openat$tcp_mem(0xffffffffffffff9c, &(0x7f0000000000)='/proc/sys/net/ipv4/tcp_rmem\x00', 0x1, 0x0) mremap(&(0x7f00006bd000/0x2000)=nil, 0x2000, 0x1000, 0x3, &(0x7f0000168000/0x1000)=nil) mlock2(&(0x7f0000627000/0x3000)=nil, 0x3000, 0x0) mremap(&(0x7f0000532000/0x3000)=nil, 0x3000, 0x3000, 0x3, &(0x7f0000ffb000/0x3000)=nil) mlock(&(0x7f0000626000/0x5000)=nil, 0x5000) 152.875945ms ago: executing program 2: socket$nl_generic(0x10, 0x3, 0x10) openat$uinput(0xffffffffffffff9c, 0x0, 0x0, 0x0) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x20000008b}, 0x0) sched_setscheduler(0x0, 0x1, &(0x7f0000000080)=0x7) r0 = getpid() sched_setscheduler(r0, 0x2, &(0x7f0000000200)=0x7) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000200)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$SCSI_IOCTL_GET_PCI(0xffffffffffffffff, 0x5387, 0x0) connect$unix(r1, &(0x7f0000000180)=@abs, 0x6e) sendmmsg$unix(r2, &(0x7f00000bd000), 0x318, 0x0) recvmmsg(r1, &(0x7f00000000c0), 0x10106, 0x2, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000200)=0x4) openat$cgroup_ro(0xffffffffffffff9c, &(0x7f00000000c0)='memory.events\x00', 0x26e1, 0x0) bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000180)={0x11, 0x5, &(0x7f0000000280)=ANY=[@ANYBLOB="1801000021000000000000004bc311ec85"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2}, 0x90) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) sendmsg$inet(r3, &(0x7f0000000300)={0x0, 0xffffffbe, &(0x7f00000002c0)=[{&(0x7f0000000080)="de", 0xc0e77043}], 0x1}, 0x2000c054) bpf$BPF_GET_MAP_INFO(0xf, 0x0, 0x0) bpf$PROG_LOAD_XDP(0x5, 0x0, 0x0) bpf$MAP_CREATE_CONST_STR(0x0, &(0x7f0000000340), 0x48) r4 = bpf$BPF_BTF_LOAD(0x12, &(0x7f0000000180)={&(0x7f00000003c0)=ANY=[@ANYBLOB="9feb010018000000000000000c0000000c0000000200000000000000000000020000000000009053d7aecc4ecaad98bc3d4a0a9e3c18ff92c3ed"], &(0x7f00000000c0)=""/158, 0x26, 0x9e, 0x1}, 0x20) openat$vhost_vsock(0xffffffffffffff9c, &(0x7f0000000240), 0x2, 0x0) bpf$PROG_LOAD_XDP(0x5, &(0x7f00000005c0)={0x3, 0x3, &(0x7f0000000680)=ANY=[@ANYBLOB="180081b2aceeb8fe94697c0050a722821d42dd4600000000"], &(0x7f0000000040)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x25, r4, 0x8, 0x0, 0xfffffffffffffd78}, 0x90) close(0xffffffffffffffff) mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.cpu/syz1\x00', 0x1ff) r5 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0) r6 = openat$cgroup_int(r5, &(0x7f0000000180)='cpuset.sched_load_balance\x00', 0x2, 0x0) write$cgroup_int(r6, &(0x7f00000001c0), 0x12) 0s ago: executing program 1: r0 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000180)={0x18, 0x5, &(0x7f0000000280)=ANY=[@ANYBLOB="1801000021000000000000003b810000850000006d000000850000005000000095"], &(0x7f0000001380)='syzkaller\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2}, 0x90) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000080)={&(0x7f0000000dc0)='rcu_utilization\x00', r0}, 0x5e) r1 = socket$kcm(0x2, 0x0, 0x84) setsockopt$sock_attach_bpf(r1, 0x84, 0xb, &(0x7f0000000040), 0x4) sendmsg$inet(r1, &(0x7f00000002c0)={&(0x7f00000000c0)={0x2, 0x0, @initdev={0xac, 0x1e, 0x0, 0x0}}, 0x4a, &(0x7f0000000100)=[{&(0x7f0000000500)="fd", 0x1}], 0x1}, 0x0) kernel console output (not intermixed with test programs): 8: ffffffff82038425 R09: 0000000000000010 [ 150.032916][ C1] R10: 0000000000000003 R11: ffffffff817ef6f0 R12: 0000000000152820 [ 150.040960][ C1] R13: 0000000000000001 R14: ffffea0000b4e780 R15: dffffc0000000000 [ 150.049012][ C1] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 150.055197][ C1] ? save_stack+0x115/0x1f0 [ 150.059789][ C1] __set_page_owner+0x92/0x800 [ 150.064578][ C1] ? __pfx_seqcount_lockdep_reader_access+0x10/0x10 [ 150.071262][ C1] ? get_page_from_freelist+0x7d7/0x2d70 [ 150.076972][ C1] ? __pfx_lock_release+0x10/0x10 [ 150.082024][ C1] ? __pfx___set_page_owner+0x10/0x10 [ 150.087485][ C1] post_alloc_hook+0x1f3/0x230 [ 150.092274][ C1] get_page_from_freelist+0x2cbd/0x2d70 [ 150.097918][ C1] ? mark_lock+0x9a/0x360 [ 150.102315][ C1] __alloc_pages_noprof+0x256/0x6c0 [ 150.107611][ C1] ? __pfx___alloc_pages_noprof+0x10/0x10 [ 150.113380][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 150.119554][ C1] alloc_slab_page+0x5f/0x120 [ 150.124288][ C1] allocate_slab+0x5a/0x2f0 [ 150.128995][ C1] ___slab_alloc+0xcd1/0x14b0 [ 150.133723][ C1] ? __alloc_skb+0x1c3/0x440 [ 150.138408][ C1] ? __alloc_skb+0x1c3/0x440 [ 150.143032][ C1] __slab_alloc+0x58/0xa0 [ 150.147453][ C1] ? __alloc_skb+0x1c3/0x440 [ 150.152072][ C1] kmem_cache_alloc_node_noprof+0x1fe/0x320 [ 150.158059][ C1] __alloc_skb+0x1c3/0x440 [ 150.162506][ C1] ? __pfx___alloc_skb+0x10/0x10 [ 150.167521][ C1] ? __timer_delete+0xdf/0x380 [ 150.172322][ C1] __ipv6_ifa_notify+0x2e9/0x11f0 [ 150.177440][ C1] ? __pfx___ipv6_ifa_notify+0x10/0x10 [ 150.182923][ C1] ? mark_lock+0x9a/0x360 [ 150.187330][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 150.193469][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 150.199888][ C1] ? __cancel_work+0x24a/0x390 [ 150.204694][ C1] ? lockdep_hardirqs_on+0x99/0x150 [ 150.209992][ C1] ? __cancel_work+0x2ee/0x390 [ 150.214798][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 150.221425][ C1] addrconf_dad_completed+0x181/0xcd0 [ 150.226882][ C1] ? __pfx_addrconf_dad_completed+0x10/0x10 [ 150.232810][ C1] ? addrconf_dad_work+0x58a/0x16f0 [ 150.238190][ C1] addrconf_dad_work+0xdc2/0x16f0 [ 150.243271][ C1] ? __pfx_addrconf_dad_work+0x10/0x10 [ 150.248810][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 150.255276][ C1] ? process_scheduled_works+0x945/0x1830 [ 150.261074][ C1] process_scheduled_works+0xa2c/0x1830 [ 150.266812][ C1] ? __pfx_process_scheduled_works+0x10/0x10 [ 150.272843][ C1] ? assign_work+0x364/0x3d0 [ 150.277535][ C1] worker_thread+0x86d/0xd50 [ 150.282163][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 150.288247][ C1] ? __kthread_parkme+0x169/0x1d0 [ 150.293304][ C1] ? __pfx_worker_thread+0x10/0x10 [ 150.298498][ C1] kthread+0x2f0/0x390 [ 150.302598][ C1] ? __pfx_worker_thread+0x10/0x10 [ 150.307798][ C1] ? __pfx_kthread+0x10/0x10 [ 150.312426][ C1] ret_from_fork+0x4b/0x80 [ 150.316922][ C1] ? __pfx_kthread+0x10/0x10 [ 150.321542][ C1] ret_from_fork_asm+0x1a/0x30 [ 150.326405][ C1] [ 150.329452][ C1] [ 150.329452][ C1] Showing all locks held in the system: [ 150.337577][ C1] 3 locks held by kworker/0:1/9: [ 150.342533][ C1] 2 locks held by kworker/1:0/25: [ 150.347627][ C1] 2 locks held by kworker/u8:2/35: [ 150.352781][ C1] 3 locks held by kworker/u8:7/2826: [ 150.358134][ C1] 2 locks held by getty/4846: [ 150.362825][ C1] #0: ffff88802a7a90a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 150.372693][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 [ 150.382924][ C1] 1 lock held by syz-executor.0/5395: [ 150.388465][ C1] 2 locks held by syz-executor.3/5426: [ 150.393937][ C1] #0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x9a7/0xf80 [ 150.403978][ C1] #1: ffff88807db3c0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 [ 150.414273][ C1] 1 lock held by syz-executor.4/5435: [ 150.419810][ C1] #0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region+0x62/0xa0 [ 150.430807][ C1] 1 lock held by syz-executor.2/5441: [ 150.436238][ C1] #0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 [ 150.447274][ C1] 3 locks held by syz-executor.2/5444: [ 150.452749][ C1] #0: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 [ 150.462997][ C1] #1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0 [ 150.472891][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 150.482867][ C1] 5 locks held by syz-executor.1/5448: [ 150.488400][ C1] [ 150.490742][ C1] ============================================= [ 150.490742][ C1] [ 151.576014][ C1] DEBUG: holding rtnl_mutex for 7397 jiffies. [ 151.582223][ C1] task:kworker/u8:7 state:R running task stack:23600 pid:2826 tgid:2826 ppid:2 flags:0x00004000 [ 151.594209][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 151.600448][ C1] Call Trace: [ 151.603815][ C1] [ 151.606887][ C1] __schedule+0x17e8/0x4a20 [ 151.611561][ C1] ? ret_from_fork+0x4b/0x80 [ 151.616305][ C1] ? arch_stack_walk+0x174/0x1b0 [ 151.621332][ C1] ? __pfx___schedule+0x10/0x10 [ 151.626445][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 151.632613][ C1] ? preempt_schedule_irq+0xf0/0x1c0 [ 151.638105][ C1] preempt_schedule_irq+0xfb/0x1c0 [ 151.643337][ C1] ? __pfx_preempt_schedule_irq+0x10/0x10 [ 151.649303][ C1] irqentry_exit+0x5e/0x90 [ 151.653862][ C1] asm_sysvec_reschedule_ipi+0x1a/0x20 [ 151.659512][ C1] RIP: 0010:save_stack+0x185/0x1f0 [ 151.664797][ C1] Code: 44 2c 14 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 e0 00 00 00 75 6a 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 cc cc cc cc 89 d9 80 e1 07 fe c1 38 c1 0f 8c 14 ff ff ff 48 [ 151.684625][ C1] RSP: 0018:ffffc90009a17050 EFLAGS: 00000246 [ 151.690897][ C1] RAX: 00000000040a0252 RBX: 0000000000000000 RCX: ffff88802b5fda00 [ 151.699104][ C1] RDX: 0000000000000000 RSI: 00000000040a0252 RDI: 0000000000000000 [ 151.707266][ C1] RBP: ffffc90009a17050 R08: ffffffff82038425 R09: 0000000000000010 [ 151.715424][ C1] R10: 0000000000000003 R11: ffffffff817ef6f0 R12: 0000000000152820 [ 151.723572][ C1] R13: 0000000000000001 R14: ffffea0000b4e780 R15: dffffc0000000000 [ 151.731789][ C1] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 151.738122][ C1] ? save_stack+0x115/0x1f0 [ 151.742753][ C1] __set_page_owner+0x92/0x800 [ 151.747754][ C1] ? __pfx_seqcount_lockdep_reader_access+0x10/0x10 [ 151.754493][ C1] ? get_page_from_freelist+0x7d7/0x2d70 [ 151.760330][ C1] ? __pfx_lock_release+0x10/0x10 [ 151.765461][ C1] ? __pfx___set_page_owner+0x10/0x10 [ 151.771036][ C1] post_alloc_hook+0x1f3/0x230 [ 151.776003][ C1] get_page_from_freelist+0x2cbd/0x2d70 [ 151.781680][ C1] ? mark_lock+0x9a/0x360 [ 151.786251][ C1] __alloc_pages_noprof+0x256/0x6c0 [ 151.791569][ C1] ? __pfx___alloc_pages_noprof+0x10/0x10 [ 151.797551][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 151.803640][ C1] alloc_slab_page+0x5f/0x120 [ 151.808537][ C1] allocate_slab+0x5a/0x2f0 [ 151.813177][ C1] ___slab_alloc+0xcd1/0x14b0 [ 151.818088][ C1] ? __alloc_skb+0x1c3/0x440 [ 151.822812][ C1] ? __alloc_skb+0x1c3/0x440 [ 151.827590][ C1] __slab_alloc+0x58/0xa0 [ 151.832035][ C1] ? __alloc_skb+0x1c3/0x440 [ 151.836833][ C1] kmem_cache_alloc_node_noprof+0x1fe/0x320 [ 151.842882][ C1] __alloc_skb+0x1c3/0x440 [ 151.847471][ C1] ? __pfx___alloc_skb+0x10/0x10 [ 151.852537][ C1] ? __timer_delete+0xdf/0x380 [ 151.857525][ C1] __ipv6_ifa_notify+0x2e9/0x11f0 [ 151.862695][ C1] ? __pfx___ipv6_ifa_notify+0x10/0x10 [ 151.868406][ C1] ? mark_lock+0x9a/0x360 [ 151.872876][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 151.879057][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 151.885494][ C1] ? __cancel_work+0x24a/0x390 [ 151.890479][ C1] ? lockdep_hardirqs_on+0x99/0x150 [ 151.895814][ C1] ? __cancel_work+0x2ee/0x390 [ 151.900776][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 151.907309][ C1] addrconf_dad_completed+0x181/0xcd0 [ 151.912836][ C1] ? __pfx_addrconf_dad_completed+0x10/0x10 [ 151.918956][ C1] ? addrconf_dad_work+0x58a/0x16f0 [ 151.924306][ C1] addrconf_dad_work+0xdc2/0x16f0 [ 151.929531][ C1] ? __pfx_addrconf_dad_work+0x10/0x10 [ 151.935105][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 151.941608][ C1] ? process_scheduled_works+0x945/0x1830 [ 151.947563][ C1] process_scheduled_works+0xa2c/0x1830 [ 151.953295][ C1] ? __pfx_process_scheduled_works+0x10/0x10 [ 151.959542][ C1] ? assign_work+0x364/0x3d0 [ 151.964268][ C1] worker_thread+0x86d/0xd50 [ 151.969125][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 151.975106][ C1] ? __kthread_parkme+0x169/0x1d0 [ 151.980393][ C1] ? __pfx_worker_thread+0x10/0x10 [ 151.985640][ C1] kthread+0x2f0/0x390 [ 151.989938][ C1] ? __pfx_worker_thread+0x10/0x10 [ 151.995156][ C1] ? __pfx_kthread+0x10/0x10 [ 151.999973][ C1] ret_from_fork+0x4b/0x80 [ 152.004496][ C1] ? __pfx_kthread+0x10/0x10 [ 152.009315][ C1] ret_from_fork_asm+0x1a/0x30 [ 152.014215][ C1] [ 152.017448][ C1] [ 152.017448][ C1] Showing all locks held in the system: [ 152.025260][ C1] 3 locks held by kworker/0:1/9: [ 152.030419][ C1] 2 locks held by kworker/1:0/25: [ 152.035539][ C1] 2 locks held by kworker/u8:2/35: [ 152.040882][ C1] 3 locks held by kworker/u8:7/2826: [ 152.046322][ C1] 2 locks held by getty/4846: [ 152.051092][ C1] #0: ffff88802a7a90a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 152.061163][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 [ 152.071554][ C1] 1 lock held by syz-executor.0/5395: [ 152.077146][ C1] 2 locks held by syz-executor.3/5426: [ 152.082693][ C1] #0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x9a7/0xf80 [ 152.092827][ C1] #1: ffff88807db3c0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 [ 152.103267][ C1] 1 lock held by syz-executor.4/5435: [ 152.108821][ C1] #0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region+0x62/0xa0 [ 152.119980][ C1] 1 lock held by syz-executor.2/5441: [ 152.125478][ C1] #0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 [ 152.136665][ C1] 3 locks held by syz-executor.2/5447: [ 152.142212][ C1] #0: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 [ 152.152613][ C1] #1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0 [ 152.162715][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 152.172971][ C1] 5 locks held by syz-executor.1/5448: [ 152.178629][ C1] [ 152.181077][ C1] ============================================= [ 152.181077][ C1] [ 153.255996][ C1] DEBUG: holding rtnl_mutex for 7565 jiffies. [ 153.262204][ C1] task:kworker/u8:7 state:R running task stack:23600 pid:2826 tgid:2826 ppid:2 flags:0x00004000 [ 153.274177][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 153.280336][ C1] Call Trace: [ 153.283717][ C1] [ 153.286817][ C1] __schedule+0x17e8/0x4a20 [ 153.291463][ C1] ? ret_from_fork+0x4b/0x80 [ 153.296245][ C1] ? arch_stack_walk+0x174/0x1b0 [ 153.301318][ C1] ? __pfx___schedule+0x10/0x10 [ 153.306369][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 153.312462][ C1] ? preempt_schedule_irq+0xf0/0x1c0 [ 153.318025][ C1] preempt_schedule_irq+0xfb/0x1c0 [ 153.323257][ C1] ? __pfx_preempt_schedule_irq+0x10/0x10 [ 153.329209][ C1] irqentry_exit+0x5e/0x90 [ 153.333760][ C1] asm_sysvec_reschedule_ipi+0x1a/0x20 [ 153.339446][ C1] RIP: 0010:save_stack+0x185/0x1f0 [ 153.344696][ C1] Code: 44 2c 14 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 e0 00 00 00 75 6a 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 cc cc cc cc 89 d9 80 e1 07 fe c1 38 c1 0f 8c 14 ff ff ff 48 [ 153.364566][ C1] RSP: 0018:ffffc90009a17050 EFLAGS: 00000246 [ 153.370905][ C1] RAX: 00000000040a0252 RBX: 0000000000000000 RCX: ffff88802b5fda00 [ 153.379047][ C1] RDX: 0000000000000000 RSI: 00000000040a0252 RDI: 0000000000000000 [ 153.387256][ C1] RBP: ffffc90009a17050 R08: ffffffff82038425 R09: 0000000000000010 [ 153.395405][ C1] R10: 0000000000000003 R11: ffffffff817ef6f0 R12: 0000000000152820 [ 153.403599][ C1] R13: 0000000000000001 R14: ffffea0000b4e780 R15: dffffc0000000000 [ 153.411795][ C1] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 153.418182][ C1] ? save_stack+0x115/0x1f0 [ 153.422808][ C1] __set_page_owner+0x92/0x800 [ 153.427795][ C1] ? __pfx_seqcount_lockdep_reader_access+0x10/0x10 [ 153.434532][ C1] ? get_page_from_freelist+0x7d7/0x2d70 [ 153.440393][ C1] ? __pfx_lock_release+0x10/0x10 [ 153.445551][ C1] ? __pfx___set_page_owner+0x10/0x10 [ 153.451126][ C1] post_alloc_hook+0x1f3/0x230 [ 153.456079][ C1] get_page_from_freelist+0x2cbd/0x2d70 [ 153.461753][ C1] ? mark_lock+0x9a/0x360 [ 153.466322][ C1] __alloc_pages_noprof+0x256/0x6c0 [ 153.471660][ C1] ? __pfx___alloc_pages_noprof+0x10/0x10 [ 153.477546][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 153.483635][ C1] alloc_slab_page+0x5f/0x120 [ 153.488499][ C1] allocate_slab+0x5a/0x2f0 [ 153.493126][ C1] ___slab_alloc+0xcd1/0x14b0 [ 153.498024][ C1] ? __alloc_skb+0x1c3/0x440 [ 153.502722][ C1] ? __alloc_skb+0x1c3/0x440 [ 153.507522][ C1] __slab_alloc+0x58/0xa0 [ 153.511997][ C1] ? __alloc_skb+0x1c3/0x440 [ 153.516802][ C1] kmem_cache_alloc_node_noprof+0x1fe/0x320 [ 153.522806][ C1] __alloc_skb+0x1c3/0x440 [ 153.527442][ C1] ? __pfx___alloc_skb+0x10/0x10 [ 153.532503][ C1] ? __timer_delete+0xdf/0x380 [ 153.537799][ C1] __ipv6_ifa_notify+0x2e9/0x11f0 [ 153.542923][ C1] ? __pfx___ipv6_ifa_notify+0x10/0x10 [ 153.548565][ C1] ? mark_lock+0x9a/0x360 [ 153.553030][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 153.559225][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 153.565690][ C1] ? __cancel_work+0x24a/0x390 [ 153.570725][ C1] ? lockdep_hardirqs_on+0x99/0x150 [ 153.576138][ C1] ? __cancel_work+0x2ee/0x390 [ 153.581011][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 153.587540][ C1] addrconf_dad_completed+0x181/0xcd0 [ 153.593031][ C1] ? __pfx_addrconf_dad_completed+0x10/0x10 [ 153.599118][ C1] ? addrconf_dad_work+0x58a/0x16f0 [ 153.604454][ C1] addrconf_dad_work+0xdc2/0x16f0 [ 153.609677][ C1] ? __pfx_addrconf_dad_work+0x10/0x10 [ 153.615272][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 153.621837][ C1] ? process_scheduled_works+0x945/0x1830 [ 153.627745][ C1] process_scheduled_works+0xa2c/0x1830 [ 153.633461][ C1] ? __pfx_process_scheduled_works+0x10/0x10 [ 153.639607][ C1] ? assign_work+0x364/0x3d0 [ 153.644303][ C1] worker_thread+0x86d/0xd50 [ 153.649091][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 153.655209][ C1] ? __kthread_parkme+0x169/0x1d0 [ 153.660469][ C1] ? __pfx_worker_thread+0x10/0x10 [ 153.665688][ C1] kthread+0x2f0/0x390 [ 153.669972][ C1] ? __pfx_worker_thread+0x10/0x10 [ 153.675216][ C1] ? __pfx_kthread+0x10/0x10 [ 153.679992][ C1] ret_from_fork+0x4b/0x80 [ 153.684539][ C1] ? __pfx_kthread+0x10/0x10 [ 153.689364][ C1] ret_from_fork_asm+0x1a/0x30 [ 153.694285][ C1] [ 153.697519][ C1] [ 153.697519][ C1] Showing all locks held in the system: [ 153.705329][ C1] 3 locks held by kworker/0:1/9: [ 153.710482][ C1] 2 locks held by kworker/1:0/25: [ 153.715559][ C1] 2 locks held by kworker/u8:2/35: [ 153.720865][ C1] 3 locks held by kworker/u8:7/2826: [ 153.726320][ C1] 2 locks held by getty/4846: [ 153.731086][ C1] #0: ffff88802a7a90a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 153.741098][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 [ 153.751465][ C1] 1 lock held by syz-executor.0/5395: [ 153.757031][ C1] 2 locks held by syz-executor.3/5426: [ 153.762542][ C1] #0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x9a7/0xf80 [ 153.772640][ C1] #1: ffff88807db3c0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 [ 153.783063][ C1] 1 lock held by syz-executor.4/5435: [ 153.788655][ C1] #0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region+0x62/0xa0 [ 153.799799][ C1] 1 lock held by syz-executor.2/5441: [ 153.805267][ C1] #0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 [ 153.816463][ C1] 3 locks held by syz-executor.2/5447: [ 153.821983][ C1] #0: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 [ 153.832354][ C1] #1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0 [ 153.842441][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 153.852550][ C1] 5 locks held by syz-executor.1/5448: [ 153.858156][ C1] [ 153.860536][ C1] ============================================= [ 153.860536][ C1] [ 154.936026][ C1] DEBUG: holding rtnl_mutex for 7733 jiffies. [ 154.942262][ C1] task:kworker/u8:7 state:R running task stack:23600 pid:2826 tgid:2826 ppid:2 flags:0x00004000 [ 154.954262][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 154.960478][ C1] Call Trace: [ 154.963847][ C1] [ 154.966951][ C1] __schedule+0x17e8/0x4a20 [ 154.971605][ C1] ? ret_from_fork+0x4b/0x80 [ 154.976420][ C1] ? arch_stack_walk+0x174/0x1b0 [ 154.981468][ C1] ? __pfx___schedule+0x10/0x10 [ 154.986549][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 154.992697][ C1] ? preempt_schedule_irq+0xf0/0x1c0 [ 154.998234][ C1] preempt_schedule_irq+0xfb/0x1c0 [ 155.003458][ C1] ? __pfx_preempt_schedule_irq+0x10/0x10 [ 155.009458][ C1] irqentry_exit+0x5e/0x90 [ 155.013985][ C1] asm_sysvec_reschedule_ipi+0x1a/0x20 [ 155.019660][ C1] RIP: 0010:save_stack+0x185/0x1f0 [ 155.024891][ C1] Code: 44 2c 14 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 e0 00 00 00 75 6a 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 cc cc cc cc 89 d9 80 e1 07 fe c1 38 c1 0f 8c 14 ff ff ff 48 [ 155.044813][ C1] RSP: 0018:ffffc90009a17050 EFLAGS: 00000246 [ 155.051132][ C1] RAX: 00000000040a0252 RBX: 0000000000000000 RCX: ffff88802b5fda00 [ 155.059348][ C1] RDX: 0000000000000000 RSI: 00000000040a0252 RDI: 0000000000000000 [ 155.067529][ C1] RBP: ffffc90009a17050 R08: ffffffff82038425 R09: 0000000000000010 [ 155.075679][ C1] R10: 0000000000000003 R11: ffffffff817ef6f0 R12: 0000000000152820 [ 155.083850][ C1] R13: 0000000000000001 R14: ffffea0000b4e780 R15: dffffc0000000000 [ 155.092068][ C1] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 155.098519][ C1] ? save_stack+0x115/0x1f0 [ 155.103179][ C1] __set_page_owner+0x92/0x800 [ 155.108203][ C1] ? __pfx_seqcount_lockdep_reader_access+0x10/0x10 [ 155.114883][ C1] ? get_page_from_freelist+0x7d7/0x2d70 [ 155.120765][ C1] ? __pfx_lock_release+0x10/0x10 [ 155.126012][ C1] ? __pfx___set_page_owner+0x10/0x10 [ 155.131535][ C1] post_alloc_hook+0x1f3/0x230 [ 155.136470][ C1] get_page_from_freelist+0x2cbd/0x2d70 [ 155.142187][ C1] ? mark_lock+0x9a/0x360 [ 155.146724][ C1] __alloc_pages_noprof+0x256/0x6c0 [ 155.152068][ C1] ? __pfx___alloc_pages_noprof+0x10/0x10 [ 155.158033][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 155.164161][ C1] alloc_slab_page+0x5f/0x120 [ 155.169031][ C1] allocate_slab+0x5a/0x2f0 [ 155.173608][ C1] ___slab_alloc+0xcd1/0x14b0 [ 155.178545][ C1] ? __alloc_skb+0x1c3/0x440 [ 155.183270][ C1] ? __alloc_skb+0x1c3/0x440 [ 155.188090][ C1] __slab_alloc+0x58/0xa0 [ 155.192564][ C1] ? __alloc_skb+0x1c3/0x440 [ 155.197377][ C1] kmem_cache_alloc_node_noprof+0x1fe/0x320 [ 155.203397][ C1] __alloc_skb+0x1c3/0x440 [ 155.208042][ C1] ? __pfx___alloc_skb+0x10/0x10 [ 155.213112][ C1] ? __timer_delete+0xdf/0x380 [ 155.218118][ C1] __ipv6_ifa_notify+0x2e9/0x11f0 [ 155.223289][ C1] ? __pfx___ipv6_ifa_notify+0x10/0x10 [ 155.228946][ C1] ? mark_lock+0x9a/0x360 [ 155.233423][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 155.239630][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 155.246153][ C1] ? __cancel_work+0x24a/0x390 [ 155.251032][ C1] ? lockdep_hardirqs_on+0x99/0x150 [ 155.256434][ C1] ? __cancel_work+0x2ee/0x390 [ 155.261349][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 155.267916][ C1] addrconf_dad_completed+0x181/0xcd0 [ 155.273485][ C1] ? __pfx_addrconf_dad_completed+0x10/0x10 [ 155.279616][ C1] ? addrconf_dad_work+0x58a/0x16f0 [ 155.284934][ C1] addrconf_dad_work+0xdc2/0x16f0 [ 155.290197][ C1] ? __pfx_addrconf_dad_work+0x10/0x10 [ 155.295794][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 155.302360][ C1] ? process_scheduled_works+0x945/0x1830 [ 155.308342][ C1] process_scheduled_works+0xa2c/0x1830 [ 155.314102][ C1] ? __pfx_process_scheduled_works+0x10/0x10 [ 155.320325][ C1] ? assign_work+0x364/0x3d0 [ 155.325099][ C1] worker_thread+0x86d/0xd50 [ 155.329908][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 155.336108][ C1] ? __kthread_parkme+0x169/0x1d0 [ 155.341273][ C1] ? __pfx_worker_thread+0x10/0x10 [ 155.346560][ C1] kthread+0x2f0/0x390 [ 155.350781][ C1] ? __pfx_worker_thread+0x10/0x10 [ 155.356103][ C1] ? __pfx_kthread+0x10/0x10 [ 155.360978][ C1] ret_from_fork+0x4b/0x80 [ 155.365506][ C1] ? __pfx_kthread+0x10/0x10 [ 155.370340][ C1] ret_from_fork_asm+0x1a/0x30 [ 155.375265][ C1] [ 155.378463][ C1] [ 155.378463][ C1] Showing all locks held in the system: [ 155.386353][ C1] 3 locks held by kworker/0:1/9: [ 155.391391][ C1] 2 locks held by kworker/1:0/25: [ 155.396784][ C1] 2 locks held by kworker/u8:2/35: [ 155.402050][ C1] 3 locks held by kworker/u8:7/2826: [ 155.407513][ C1] 2 locks held by getty/4846: [ 155.412359][ C1] #0: ffff88802a7a90a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 155.422456][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 [ 155.432906][ C1] 1 lock held by syz-executor.0/5395: [ 155.438503][ C1] 2 locks held by syz-executor.3/5426: [ 155.444163][ C1] #0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x9a7/0xf80 [ 155.454403][ C1] #1: ffff88807db3c0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 [ 155.464856][ C1] 1 lock held by syz-executor.4/5435: [ 155.470428][ C1] #0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region+0x62/0xa0 [ 155.481611][ C1] 1 lock held by syz-executor.2/5441: [ 155.487174][ C1] #0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 [ 155.498332][ C1] 2 locks held by syz-executor.2/5446: [ 155.503916][ C1] 3 locks held by syz-executor.2/5447: [ 155.509566][ C1] #0: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 [ 155.520011][ C1] #1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0 [ 155.530100][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 155.540281][ C1] 5 locks held by syz-executor.1/5448: [ 155.545818][ C1] [ 155.548366][ C1] ============================================= [ 155.548366][ C1] [ 156.615980][ C1] DEBUG: holding rtnl_mutex for 7901 jiffies. [ 156.622161][ C1] task:kworker/u8:7 state:R running task stack:23600 pid:2826 tgid:2826 ppid:2 flags:0x00004000 [ 156.634128][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 156.640305][ C1] Call Trace: [ 156.643635][ C1] [ 156.646657][ C1] __schedule+0x17e8/0x4a20 [ 156.651270][ C1] ? ret_from_fork+0x4b/0x80 [ 156.656013][ C1] ? arch_stack_walk+0x174/0x1b0 [ 156.661059][ C1] ? __pfx___schedule+0x10/0x10 [ 156.666062][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 156.672181][ C1] ? preempt_schedule_irq+0xf0/0x1c0 [ 156.677609][ C1] preempt_schedule_irq+0xfb/0x1c0 [ 156.682791][ C1] ? __pfx_preempt_schedule_irq+0x10/0x10 [ 156.688664][ C1] irqentry_exit+0x5e/0x90 [ 156.693150][ C1] asm_sysvec_reschedule_ipi+0x1a/0x20 [ 156.698747][ C1] RIP: 0010:save_stack+0x185/0x1f0 [ 156.703953][ C1] Code: 44 2c 14 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 e0 00 00 00 75 6a 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 cc cc cc cc 89 d9 80 e1 07 fe c1 38 c1 0f 8c 14 ff ff ff 48 [ 156.723733][ C1] RSP: 0018:ffffc90009a17050 EFLAGS: 00000246 [ 156.729973][ C1] RAX: 00000000040a0252 RBX: 0000000000000000 RCX: ffff88802b5fda00 [ 156.738082][ C1] RDX: 0000000000000000 RSI: 00000000040a0252 RDI: 0000000000000000 [ 156.746178][ C1] RBP: ffffc90009a17050 R08: ffffffff82038425 R09: 0000000000000010 [ 156.754199][ C1] R10: 0000000000000003 R11: ffffffff817ef6f0 R12: 0000000000152820 [ 156.762375][ C1] R13: 0000000000000001 R14: ffffea0000b4e780 R15: dffffc0000000000 [ 156.770491][ C1] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 156.776785][ C1] ? save_stack+0x115/0x1f0 [ 156.781391][ C1] __set_page_owner+0x92/0x800 [ 156.786261][ C1] ? __pfx_seqcount_lockdep_reader_access+0x10/0x10 [ 156.792950][ C1] ? get_page_from_freelist+0x7d7/0x2d70 [ 156.798757][ C1] ? __pfx_lock_release+0x10/0x10 [ 156.803848][ C1] ? __pfx___set_page_owner+0x10/0x10 [ 156.809366][ C1] post_alloc_hook+0x1f3/0x230 [ 156.814258][ C1] get_page_from_freelist+0x2cbd/0x2d70 [ 156.819965][ C1] ? mark_lock+0x9a/0x360 [ 156.824453][ C1] __alloc_pages_noprof+0x256/0x6c0 [ 156.829790][ C1] ? __pfx___alloc_pages_noprof+0x10/0x10 [ 156.835587][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 156.841683][ C1] alloc_slab_page+0x5f/0x120 [ 156.846491][ C1] allocate_slab+0x5a/0x2f0 [ 156.851089][ C1] ___slab_alloc+0xcd1/0x14b0 [ 156.855835][ C1] ? __alloc_skb+0x1c3/0x440 [ 156.860581][ C1] ? __alloc_skb+0x1c3/0x440 [ 156.865302][ C1] __slab_alloc+0x58/0xa0 [ 156.869766][ C1] ? __alloc_skb+0x1c3/0x440 [ 156.874420][ C1] kmem_cache_alloc_node_noprof+0x1fe/0x320 [ 156.880465][ C1] __alloc_skb+0x1c3/0x440 [ 156.884974][ C1] ? __pfx___alloc_skb+0x10/0x10 [ 156.890048][ C1] ? __timer_delete+0xdf/0x380 [ 156.894912][ C1] __ipv6_ifa_notify+0x2e9/0x11f0 [ 156.900107][ C1] ? __pfx___ipv6_ifa_notify+0x10/0x10 [ 156.905622][ C1] ? mark_lock+0x9a/0x360 [ 156.910124][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 156.916210][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 156.922643][ C1] ? __cancel_work+0x24a/0x390 [ 156.927572][ C1] ? lockdep_hardirqs_on+0x99/0x150 [ 156.932860][ C1] ? __cancel_work+0x2ee/0x390 [ 156.937741][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 156.944190][ C1] addrconf_dad_completed+0x181/0xcd0 [ 156.949685][ C1] ? __pfx_addrconf_dad_completed+0x10/0x10 [ 156.955677][ C1] ? addrconf_dad_work+0x58a/0x16f0 [ 156.960995][ C1] addrconf_dad_work+0xdc2/0x16f0 [ 156.966147][ C1] ? __pfx_addrconf_dad_work+0x10/0x10 [ 156.971708][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 156.978220][ C1] ? process_scheduled_works+0x945/0x1830 [ 156.984051][ C1] process_scheduled_works+0xa2c/0x1830 [ 156.989791][ C1] ? __pfx_process_scheduled_works+0x10/0x10 [ 156.995883][ C1] ? assign_work+0x364/0x3d0 [ 157.000642][ C1] worker_thread+0x86d/0xd50 [ 157.005357][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 157.011392][ C1] ? __kthread_parkme+0x169/0x1d0 [ 157.016557][ C1] ? __pfx_worker_thread+0x10/0x10 [ 157.021771][ C1] kthread+0x2f0/0x390 [ 157.025973][ C1] ? __pfx_worker_thread+0x10/0x10 [ 157.031139][ C1] ? __pfx_kthread+0x10/0x10 [ 157.035798][ C1] ret_from_fork+0x4b/0x80 [ 157.040348][ C1] ? __pfx_kthread+0x10/0x10 [ 157.045034][ C1] ret_from_fork_asm+0x1a/0x30 [ 157.049975][ C1] [ 157.053049][ C1] [ 157.053049][ C1] Showing all locks held in the system: [ 157.060914][ C1] 3 locks held by kworker/0:1/9: [ 157.065973][ C1] 2 locks held by kworker/1:0/25: [ 157.071073][ C1] 2 locks held by kworker/u8:2/35: [ 157.076339][ C1] 3 locks held by kworker/u8:7/2826: [ 157.081711][ C1] 2 locks held by getty/4846: [ 157.086475][ C1] #0: ffff88802a7a90a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 157.096465][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 [ 157.106777][ C1] 3 locks held by kworker/u9:5/5121: [ 157.112120][ C1] #0: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 [ 157.122430][ C1] #1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0 [ 157.132385][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 157.142431][ C1] 1 lock held by syz-executor.0/5395: [ 157.147927][ C1] 2 locks held by syz-executor.3/5426: [ 157.153432][ C1] #0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x9a7/0xf80 [ 157.163472][ C1] #1: ffff88807db3c0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 [ 157.173864][ C1] 1 lock held by syz-executor.4/5435: [ 157.179331][ C1] #0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region+0x62/0xa0 [ 157.190408][ C1] 1 lock held by syz-executor.2/5441: [ 157.195863][ C1] #0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 [ 157.206988][ C1] 5 locks held by syz-executor.1/5448: [ 157.212491][ C1] [ 157.214860][ C1] ============================================= [ 157.214860][ C1] [ 158.296008][ C1] DEBUG: holding rtnl_mutex for 8069 jiffies. [ 158.302187][ C1] task:kworker/u8:7 state:R running task stack:23600 pid:2826 tgid:2826 ppid:2 flags:0x00004000 [ 158.314199][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 158.320424][ C1] Call Trace: [ 158.323764][ C1] [ 158.326861][ C1] __schedule+0x17e8/0x4a20 [ 158.331484][ C1] ? ret_from_fork+0x4b/0x80 [ 158.336265][ C1] ? arch_stack_walk+0x174/0x1b0 [ 158.341337][ C1] ? __pfx___schedule+0x10/0x10 [ 158.346423][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 158.352557][ C1] ? preempt_schedule_irq+0xf0/0x1c0 [ 158.358071][ C1] preempt_schedule_irq+0xfb/0x1c0 [ 158.363315][ C1] ? __pfx_preempt_schedule_irq+0x10/0x10 [ 158.369409][ C1] irqentry_exit+0x5e/0x90 [ 158.373968][ C1] asm_sysvec_reschedule_ipi+0x1a/0x20 [ 158.379650][ C1] RIP: 0010:save_stack+0x185/0x1f0 [ 158.384872][ C1] Code: 44 2c 14 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 e0 00 00 00 75 6a 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 cc cc cc cc 89 d9 80 e1 07 fe c1 38 c1 0f 8c 14 ff ff ff 48 [ 158.404768][ C1] RSP: 0018:ffffc90009a17050 EFLAGS: 00000246 [ 158.411061][ C1] RAX: 00000000040a0252 RBX: 0000000000000000 RCX: ffff88802b5fda00 [ 158.419349][ C1] RDX: 0000000000000000 RSI: 00000000040a0252 RDI: 0000000000000000 [ 158.427557][ C1] RBP: ffffc90009a17050 R08: ffffffff82038425 R09: 0000000000000010 [ 158.435603][ C1] R10: 0000000000000003 R11: ffffffff817ef6f0 R12: 0000000000152820 [ 158.443830][ C1] R13: 0000000000000001 R14: ffffea0000b4e780 R15: dffffc0000000000 [ 158.452012][ C1] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 158.458360][ C1] ? save_stack+0x115/0x1f0 [ 158.462979][ C1] __set_page_owner+0x92/0x800 [ 158.467934][ C1] ? __pfx_seqcount_lockdep_reader_access+0x10/0x10 [ 158.474671][ C1] ? get_page_from_freelist+0x7d7/0x2d70 [ 158.480497][ C1] ? __pfx_lock_release+0x10/0x10 [ 158.485747][ C1] ? __pfx___set_page_owner+0x10/0x10 [ 158.491323][ C1] post_alloc_hook+0x1f3/0x230 [ 158.496607][ C1] get_page_from_freelist+0x2cbd/0x2d70 [ 158.502319][ C1] ? mark_lock+0x9a/0x360 [ 158.506899][ C1] __alloc_pages_noprof+0x256/0x6c0 [ 158.512204][ C1] ? __pfx___alloc_pages_noprof+0x10/0x10 [ 158.518151][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 158.524243][ C1] alloc_slab_page+0x5f/0x120 [ 158.529104][ C1] allocate_slab+0x5a/0x2f0 [ 158.533737][ C1] ___slab_alloc+0xcd1/0x14b0 [ 158.538631][ C1] ? __alloc_skb+0x1c3/0x440 [ 158.543331][ C1] ? __alloc_skb+0x1c3/0x440 [ 158.548102][ C1] __slab_alloc+0x58/0xa0 [ 158.552546][ C1] ? __alloc_skb+0x1c3/0x440 [ 158.557322][ C1] kmem_cache_alloc_node_noprof+0x1fe/0x320 [ 158.563327][ C1] __alloc_skb+0x1c3/0x440 [ 158.567977][ C1] ? __pfx___alloc_skb+0x10/0x10 [ 158.573048][ C1] ? __timer_delete+0xdf/0x380 [ 158.578046][ C1] __ipv6_ifa_notify+0x2e9/0x11f0 [ 158.583199][ C1] ? __pfx___ipv6_ifa_notify+0x10/0x10 [ 158.588833][ C1] ? mark_lock+0x9a/0x360 [ 158.593300][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 158.599505][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 158.606013][ C1] ? __cancel_work+0x24a/0x390 [ 158.610879][ C1] ? lockdep_hardirqs_on+0x99/0x150 [ 158.616292][ C1] ? __cancel_work+0x2ee/0x390 [ 158.621174][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 158.627692][ C1] addrconf_dad_completed+0x181/0xcd0 [ 158.633206][ C1] ? __pfx_addrconf_dad_completed+0x10/0x10 [ 158.639320][ C1] ? addrconf_dad_work+0x58a/0x16f0 [ 158.644674][ C1] addrconf_dad_work+0xdc2/0x16f0 [ 158.649897][ C1] ? __pfx_addrconf_dad_work+0x10/0x10 [ 158.655490][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 158.662050][ C1] ? process_scheduled_works+0x945/0x1830 [ 158.667993][ C1] process_scheduled_works+0xa2c/0x1830 [ 158.673697][ C1] ? __pfx_process_scheduled_works+0x10/0x10 [ 158.679904][ C1] ? assign_work+0x364/0x3d0 [ 158.684565][ C1] worker_thread+0x86d/0xd50 [ 158.689378][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 158.695412][ C1] ? __kthread_parkme+0x169/0x1d0 [ 158.700613][ C1] ? __pfx_worker_thread+0x10/0x10 [ 158.705799][ C1] kthread+0x2f0/0x390 [ 158.710097][ C1] ? __pfx_worker_thread+0x10/0x10 [ 158.715311][ C1] ? __pfx_kthread+0x10/0x10 [ 158.720112][ C1] ret_from_fork+0x4b/0x80 [ 158.724654][ C1] ? __pfx_kthread+0x10/0x10 [ 158.729451][ C1] ret_from_fork_asm+0x1a/0x30 [ 158.734362][ C1] [ 158.737521][ C1] [ 158.737521][ C1] Showing all locks held in the system: [ 158.745325][ C1] 3 locks held by kworker/0:1/9: [ 158.750470][ C1] 2 locks held by kworker/1:0/25: [ 158.755605][ C1] 2 locks held by kworker/u8:2/35: [ 158.760943][ C1] 3 locks held by kworker/u8:7/2826: [ 158.766362][ C1] 2 locks held by getty/4846: [ 158.771123][ C1] #0: ffff88802a7a90a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 158.781171][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 [ 158.791569][ C1] 1 lock held by syz-executor.0/5395: [ 158.797110][ C1] 2 locks held by syz-executor.3/5426: [ 158.802625][ C1] #0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x9a7/0xf80 [ 158.812682][ C1] #1: ffff88807db3c0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 [ 158.823150][ C1] 1 lock held by syz-executor.4/5435: [ 158.828729][ C1] #0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region+0x62/0xa0 [ 158.839931][ C1] 1 lock held by syz-executor.2/5441: [ 158.845400][ C1] #0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 [ 158.856643][ C1] 3 locks held by syz-executor.2/5447: [ 158.862190][ C1] #0: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 [ 158.872601][ C1] #1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0 [ 158.882629][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 158.892764][ C1] 5 locks held by syz-executor.1/5448: [ 158.898428][ C1] [ 158.900833][ C1] ============================================= [ 158.900833][ C1] [ 159.976007][ C1] DEBUG: holding rtnl_mutex for 8237 jiffies. [ 159.982246][ C1] task:kworker/u8:7 state:R running task stack:23600 pid:2826 tgid:2826 ppid:2 flags:0x00004000 [ 159.994123][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 160.000209][ C1] Call Trace: [ 160.003501][ C1] [ 160.006503][ C1] __schedule+0x17e8/0x4a20 [ 160.011137][ C1] ? ret_from_fork+0x4b/0x80 [ 160.015763][ C1] ? arch_stack_walk+0x174/0x1b0 [ 160.020823][ C1] ? __pfx___schedule+0x10/0x10 [ 160.025702][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 160.031865][ C1] ? preempt_schedule_irq+0xf0/0x1c0 [ 160.037241][ C1] preempt_schedule_irq+0xfb/0x1c0 [ 160.042562][ C1] ? __pfx_preempt_schedule_irq+0x10/0x10 [ 160.048373][ C1] irqentry_exit+0x5e/0x90 [ 160.052819][ C1] asm_sysvec_reschedule_ipi+0x1a/0x20 [ 160.058354][ C1] RIP: 0010:save_stack+0x185/0x1f0 [ 160.063492][ C1] Code: 44 2c 14 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 e0 00 00 00 75 6a 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 cc cc cc cc 89 d9 80 e1 07 fe c1 38 c1 0f 8c 14 ff ff ff 48 [ 160.083197][ C1] RSP: 0018:ffffc90009a17050 EFLAGS: 00000246 [ 160.089350][ C1] RAX: 00000000040a0252 RBX: 0000000000000000 RCX: ffff88802b5fda00 [ 160.097393][ C1] RDX: 0000000000000000 RSI: 00000000040a0252 RDI: 0000000000000000 [ 160.105384][ C1] RBP: ffffc90009a17050 R08: ffffffff82038425 R09: 0000000000000010 [ 160.113458][ C1] R10: 0000000000000003 R11: ffffffff817ef6f0 R12: 0000000000152820 [ 160.121500][ C1] R13: 0000000000000001 R14: ffffea0000b4e780 R15: dffffc0000000000 [ 160.129548][ C1] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 160.135750][ C1] ? save_stack+0x115/0x1f0 [ 160.140354][ C1] __set_page_owner+0x92/0x800 [ 160.145143][ C1] ? __pfx_seqcount_lockdep_reader_access+0x10/0x10 [ 160.151825][ C1] ? get_page_from_freelist+0x7d7/0x2d70 [ 160.157552][ C1] ? __pfx_lock_release+0x10/0x10 [ 160.162601][ C1] ? __pfx___set_page_owner+0x10/0x10 [ 160.168059][ C1] post_alloc_hook+0x1f3/0x230 [ 160.172850][ C1] get_page_from_freelist+0x2cbd/0x2d70 [ 160.178644][ C1] ? mark_lock+0x9a/0x360 [ 160.183038][ C1] __alloc_pages_noprof+0x256/0x6c0 [ 160.188331][ C1] ? __pfx___alloc_pages_noprof+0x10/0x10 [ 160.194091][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 160.200158][ C1] alloc_slab_page+0x5f/0x120 [ 160.204858][ C1] allocate_slab+0x5a/0x2f0 [ 160.209448][ C1] ___slab_alloc+0xcd1/0x14b0 [ 160.214154][ C1] ? __alloc_skb+0x1c3/0x440 [ 160.218823][ C1] ? __alloc_skb+0x1c3/0x440 [ 160.223433][ C1] __slab_alloc+0x58/0xa0 [ 160.227865][ C1] ? __alloc_skb+0x1c3/0x440 [ 160.232483][ C1] kmem_cache_alloc_node_noprof+0x1fe/0x320 [ 160.238475][ C1] __alloc_skb+0x1c3/0x440 [ 160.242927][ C1] ? __pfx___alloc_skb+0x10/0x10 [ 160.247952][ C1] ? __timer_delete+0xdf/0x380 [ 160.252749][ C1] __ipv6_ifa_notify+0x2e9/0x11f0 [ 160.257864][ C1] ? __pfx___ipv6_ifa_notify+0x10/0x10 [ 160.263343][ C1] ? mark_lock+0x9a/0x360 [ 160.267763][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 160.273771][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 160.280178][ C1] ? __cancel_work+0x24a/0x390 [ 160.284963][ C1] ? lockdep_hardirqs_on+0x99/0x150 [ 160.290246][ C1] ? __cancel_work+0x2ee/0x390 [ 160.295044][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 160.301458][ C1] addrconf_dad_completed+0x181/0xcd0 [ 160.306916][ C1] ? __pfx_addrconf_dad_completed+0x10/0x10 [ 160.312840][ C1] ? addrconf_dad_work+0x58a/0x16f0 [ 160.318125][ C1] addrconf_dad_work+0xdc2/0x16f0 [ 160.323185][ C1] ? __pfx_addrconf_dad_work+0x10/0x10 [ 160.328731][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 160.335094][ C1] ? process_scheduled_works+0x945/0x1830 [ 160.340920][ C1] process_scheduled_works+0xa2c/0x1830 [ 160.346572][ C1] ? __pfx_process_scheduled_works+0x10/0x10 [ 160.352587][ C1] ? assign_work+0x364/0x3d0 [ 160.357259][ C1] worker_thread+0x86d/0xd50 [ 160.361884][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 160.367863][ C1] ? __kthread_parkme+0x169/0x1d0 [ 160.372917][ C1] ? __pfx_worker_thread+0x10/0x10 [ 160.378103][ C1] kthread+0x2f0/0x390 [ 160.382196][ C1] ? __pfx_worker_thread+0x10/0x10 [ 160.387462][ C1] ? __pfx_kthread+0x10/0x10 [ 160.392076][ C1] ret_from_fork+0x4b/0x80 [ 160.396559][ C1] ? __pfx_kthread+0x10/0x10 [ 160.401175][ C1] ret_from_fork_asm+0x1a/0x30 [ 160.406031][ C1] [ 160.409152][ C1] [ 160.409152][ C1] Showing all locks held in the system: [ 160.416949][ C1] 3 locks held by kworker/0:1/9: [ 160.421900][ C1] 2 locks held by kworker/1:0/25: [ 160.426988][ C1] 2 locks held by kworker/u8:2/35: [ 160.432138][ C1] 3 locks held by kworker/u8:7/2826: [ 160.437496][ C1] 2 locks held by getty/4846: [ 160.442184][ C1] #0: ffff88802a7a90a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 160.452064][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 [ 160.462301][ C1] 1 lock held by syz-executor.0/5395: [ 160.467744][ C1] 2 locks held by syz-executor.3/5426: [ 160.473214][ C1] #0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x9a7/0xf80 [ 160.483174][ C1] #1: ffff88807db3c0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 [ 160.493421][ C1] 1 lock held by syz-executor.4/5435: [ 160.498862][ C1] #0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region+0x62/0xa0 [ 160.509845][ C1] 1 lock held by syz-executor.2/5441: [ 160.515226][ C1] #0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 [ 160.526227][ C1] 2 locks held by syz-executor.2/5444: [ 160.531705][ C1] 4 locks held by syz-executor.2/5446: [ 160.537226][ C1] #0: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: __task_pid_nr_ns+0x28/0x450 [ 160.546849][ C1] #1: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 [ 160.557061][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0 [ 160.566915][ C1] #3: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 160.576860][ C1] 5 locks held by syz-executor.1/5448: [ 160.582331][ C1] [ 160.584666][ C1] ============================================= [ 160.584666][ C1] [ 161.656052][ C1] DEBUG: holding rtnl_mutex for 8405 jiffies. [ 161.662324][ C1] task:kworker/u8:7 state:R running task stack:23600 pid:2826 tgid:2826 ppid:2 flags:0x00004000 [ 161.674603][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 161.680741][ C1] Call Trace: [ 161.684099][ C1] [ 161.687152][ C1] __schedule+0x17e8/0x4a20 [ 161.691769][ C1] ? ret_from_fork+0x4b/0x80 [ 161.696530][ C1] ? arch_stack_walk+0x174/0x1b0 [ 161.701533][ C1] ? __pfx___schedule+0x10/0x10 [ 161.706529][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 161.712665][ C1] ? preempt_schedule_irq+0xf0/0x1c0 [ 161.718083][ C1] preempt_schedule_irq+0xfb/0x1c0 [ 161.723282][ C1] ? __pfx_preempt_schedule_irq+0x10/0x10 [ 161.729142][ C1] irqentry_exit+0x5e/0x90 [ 161.733655][ C1] asm_sysvec_reschedule_ipi+0x1a/0x20 [ 161.739274][ C1] RIP: 0010:save_stack+0x185/0x1f0 [ 161.744453][ C1] Code: 44 2c 14 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 e0 00 00 00 75 6a 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 cc cc cc cc 89 d9 80 e1 07 fe c1 38 c1 0f 8c 14 ff ff ff 48 [ 161.764226][ C1] RSP: 0018:ffffc90009a17050 EFLAGS: 00000246 [ 161.770400][ C1] RAX: 00000000040a0252 RBX: 0000000000000000 RCX: ffff88802b5fda00 [ 161.778559][ C1] RDX: 0000000000000000 RSI: 00000000040a0252 RDI: 0000000000000000 [ 161.786634][ C1] RBP: ffffc90009a17050 R08: ffffffff82038425 R09: 0000000000000010 [ 161.794696][ C1] R10: 0000000000000003 R11: ffffffff817ef6f0 R12: 0000000000152820 [ 161.802825][ C1] R13: 0000000000000001 R14: ffffea0000b4e780 R15: dffffc0000000000 [ 161.810929][ C1] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 161.817215][ C1] ? save_stack+0x115/0x1f0 [ 161.821821][ C1] __set_page_owner+0x92/0x800 [ 161.826682][ C1] ? __pfx_seqcount_lockdep_reader_access+0x10/0x10 [ 161.833366][ C1] ? get_page_from_freelist+0x7d7/0x2d70 [ 161.839106][ C1] ? __pfx_lock_release+0x10/0x10 [ 161.844220][ C1] ? __pfx___set_page_owner+0x10/0x10 [ 161.849731][ C1] post_alloc_hook+0x1f3/0x230 [ 161.854632][ C1] get_page_from_freelist+0x2cbd/0x2d70 [ 161.860332][ C1] ? mark_lock+0x9a/0x360 [ 161.864753][ C1] __alloc_pages_noprof+0x256/0x6c0 [ 161.870116][ C1] ? __pfx___alloc_pages_noprof+0x10/0x10 [ 161.875991][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 161.882156][ C1] alloc_slab_page+0x5f/0x120 [ 161.886973][ C1] allocate_slab+0x5a/0x2f0 [ 161.891570][ C1] ___slab_alloc+0xcd1/0x14b0 [ 161.896389][ C1] ? __alloc_skb+0x1c3/0x440 [ 161.901038][ C1] ? __alloc_skb+0x1c3/0x440 [ 161.905678][ C1] __slab_alloc+0x58/0xa0 [ 161.910115][ C1] ? __alloc_skb+0x1c3/0x440 [ 161.914796][ C1] kmem_cache_alloc_node_noprof+0x1fe/0x320 [ 161.920862][ C1] __alloc_skb+0x1c3/0x440 [ 161.925343][ C1] ? __pfx___alloc_skb+0x10/0x10 [ 161.930381][ C1] ? __timer_delete+0xdf/0x380 [ 161.935241][ C1] __ipv6_ifa_notify+0x2e9/0x11f0 [ 161.940428][ C1] ? __pfx___ipv6_ifa_notify+0x10/0x10 [ 161.946094][ C1] ? mark_lock+0x9a/0x360 [ 161.950490][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 161.956614][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 161.963038][ C1] ? __cancel_work+0x24a/0x390 [ 161.967980][ C1] ? lockdep_hardirqs_on+0x99/0x150 [ 161.973295][ C1] ? __cancel_work+0x2ee/0x390 [ 161.978222][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 161.984665][ C1] addrconf_dad_completed+0x181/0xcd0 [ 161.990198][ C1] ? __pfx_addrconf_dad_completed+0x10/0x10 [ 161.996265][ C1] ? addrconf_dad_work+0x58a/0x16f0 [ 162.001539][ C1] addrconf_dad_work+0xdc2/0x16f0 [ 162.006726][ C1] ? __pfx_addrconf_dad_work+0x10/0x10 [ 162.012290][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 162.018780][ C1] ? process_scheduled_works+0x945/0x1830 [ 162.024615][ C1] process_scheduled_works+0xa2c/0x1830 [ 162.030361][ C1] ? __pfx_process_scheduled_works+0x10/0x10 [ 162.036458][ C1] ? assign_work+0x364/0x3d0 [ 162.041168][ C1] worker_thread+0x86d/0xd50 [ 162.045859][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 162.051896][ C1] ? __kthread_parkme+0x169/0x1d0 [ 162.057110][ C1] ? __pfx_worker_thread+0x10/0x10 [ 162.062287][ C1] kthread+0x2f0/0x390 [ 162.066485][ C1] ? __pfx_worker_thread+0x10/0x10 [ 162.071776][ C1] ? __pfx_kthread+0x10/0x10 [ 162.076532][ C1] ret_from_fork+0x4b/0x80 [ 162.081051][ C1] ? __pfx_kthread+0x10/0x10 [ 162.085856][ C1] ret_from_fork_asm+0x1a/0x30 [ 162.090794][ C1] [ 162.093892][ C1] [ 162.093892][ C1] Showing all locks held in the system: [ 162.101728][ C1] 3 locks held by kworker/0:1/9: [ 162.106753][ C1] 2 locks held by kworker/1:0/25: [ 162.112115][ C1] 2 locks held by kworker/u8:2/35: [ 162.117401][ C1] 3 locks held by kworker/u8:7/2826: [ 162.122739][ C1] 2 locks held by getty/4846: [ 162.127548][ C1] #0: ffff88802a7a90a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 162.137566][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 [ 162.147877][ C1] 3 locks held by kworker/u9:5/5121: [ 162.153224][ C1] #0: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 [ 162.163675][ C1] #1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0 [ 162.173684][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 162.183842][ C1] 1 lock held by syz-executor.0/5395: [ 162.189432][ C1] 2 locks held by syz-executor.3/5426: [ 162.195036][ C1] #0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x9a7/0xf80 [ 162.205164][ C1] #1: ffff88807db3c0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 [ 162.215512][ C1] 1 lock held by syz-executor.4/5435: [ 162.221005][ C1] #0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region+0x62/0xa0 [ 162.232099][ C1] 1 lock held by syz-executor.2/5441: [ 162.237600][ C1] #0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 [ 162.248692][ C1] 5 locks held by syz-executor.1/5448: [ 162.254207][ C1] [ 162.256613][ C1] ============================================= [ 162.256613][ C1] [ 163.335967][ C1] DEBUG: holding rtnl_mutex for 8573 jiffies. [ 163.342088][ C1] task:kworker/u8:7 state:R running task stack:23600 pid:2826 tgid:2826 ppid:2 flags:0x00004000 [ 163.353924][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 163.360098][ C1] Call Trace: [ 163.363390][ C1] [ 163.366392][ C1] __schedule+0x17e8/0x4a20 [ 163.370942][ C1] ? ret_from_fork+0x4b/0x80 [ 163.375563][ C1] ? arch_stack_walk+0x174/0x1b0 [ 163.380577][ C1] ? __pfx___schedule+0x10/0x10 [ 163.385454][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 163.391569][ C1] ? preempt_schedule_irq+0xf0/0x1c0 [ 163.396927][ C1] preempt_schedule_irq+0xfb/0x1c0 [ 163.402062][ C1] ? __pfx_preempt_schedule_irq+0x10/0x10 [ 163.407871][ C1] irqentry_exit+0x5e/0x90 [ 163.412717][ C1] asm_sysvec_reschedule_ipi+0x1a/0x20 [ 163.418274][ C1] RIP: 0010:save_stack+0x185/0x1f0 [ 163.423418][ C1] Code: 44 2c 14 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 e0 00 00 00 75 6a 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 cc cc cc cc 89 d9 80 e1 07 fe c1 38 c1 0f 8c 14 ff ff ff 48 [ 163.443102][ C1] RSP: 0018:ffffc90009a17050 EFLAGS: 00000246 [ 163.449257][ C1] RAX: 00000000040a0252 RBX: 0000000000000000 RCX: ffff88802b5fda00 [ 163.457294][ C1] RDX: 0000000000000000 RSI: 00000000040a0252 RDI: 0000000000000000 [ 163.465280][ C1] RBP: ffffc90009a17050 R08: ffffffff82038425 R09: 0000000000000010 [ 163.473338][ C1] R10: 0000000000000003 R11: ffffffff817ef6f0 R12: 0000000000152820 [ 163.481382][ C1] R13: 0000000000000001 R14: ffffea0000b4e780 R15: dffffc0000000000 [ 163.489434][ C1] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 163.495615][ C1] ? save_stack+0x115/0x1f0 [ 163.500205][ C1] __set_page_owner+0x92/0x800 [ 163.505123][ C1] ? __pfx_seqcount_lockdep_reader_access+0x10/0x10 [ 163.511797][ C1] ? get_page_from_freelist+0x7d7/0x2d70 [ 163.517523][ C1] ? __pfx_lock_release+0x10/0x10 [ 163.522576][ C1] ? __pfx___set_page_owner+0x10/0x10 [ 163.528028][ C1] post_alloc_hook+0x1f3/0x230 [ 163.532818][ C1] get_page_from_freelist+0x2cbd/0x2d70 [ 163.538462][ C1] ? mark_lock+0x9a/0x360 [ 163.542839][ C1] __alloc_pages_noprof+0x256/0x6c0 [ 163.548110][ C1] ? __pfx___alloc_pages_noprof+0x10/0x10 [ 163.553863][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 163.559927][ C1] alloc_slab_page+0x5f/0x120 [ 163.564629][ C1] allocate_slab+0x5a/0x2f0 [ 163.569204][ C1] ___slab_alloc+0xcd1/0x14b0 [ 163.573911][ C1] ? __alloc_skb+0x1c3/0x440 [ 163.578576][ C1] ? __alloc_skb+0x1c3/0x440 [ 163.583185][ C1] __slab_alloc+0x58/0xa0 [ 163.587588][ C1] ? __alloc_skb+0x1c3/0x440 [ 163.592198][ C1] kmem_cache_alloc_node_noprof+0x1fe/0x320 [ 163.598176][ C1] __alloc_skb+0x1c3/0x440 [ 163.602628][ C1] ? __pfx___alloc_skb+0x10/0x10 [ 163.607641][ C1] ? __timer_delete+0xdf/0x380 [ 163.612438][ C1] __ipv6_ifa_notify+0x2e9/0x11f0 [ 163.617552][ C1] ? __pfx___ipv6_ifa_notify+0x10/0x10 [ 163.623036][ C1] ? mark_lock+0x9a/0x360 [ 163.627491][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 163.633499][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 163.639912][ C1] ? __cancel_work+0x24a/0x390 [ 163.644698][ C1] ? lockdep_hardirqs_on+0x99/0x150 [ 163.649974][ C1] ? __cancel_work+0x2ee/0x390 [ 163.654773][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 163.661184][ C1] addrconf_dad_completed+0x181/0xcd0 [ 163.666647][ C1] ? __pfx_addrconf_dad_completed+0x10/0x10 [ 163.672576][ C1] ? addrconf_dad_work+0x58a/0x16f0 [ 163.677868][ C1] addrconf_dad_work+0xdc2/0x16f0 [ 163.682933][ C1] ? __pfx_addrconf_dad_work+0x10/0x10 [ 163.688481][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 163.694845][ C1] ? process_scheduled_works+0x945/0x1830 [ 163.700653][ C1] process_scheduled_works+0xa2c/0x1830 [ 163.706295][ C1] ? __pfx_process_scheduled_works+0x10/0x10 [ 163.712308][ C1] ? assign_work+0x364/0x3d0 [ 163.716980][ C1] worker_thread+0x86d/0xd50 [ 163.721616][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 163.727600][ C1] ? __kthread_parkme+0x169/0x1d0 [ 163.732653][ C1] ? __pfx_worker_thread+0x10/0x10 [ 163.737846][ C1] kthread+0x2f0/0x390 [ 163.741944][ C1] ? __pfx_worker_thread+0x10/0x10 [ 163.747131][ C1] ? __pfx_kthread+0x10/0x10 [ 163.751748][ C1] ret_from_fork+0x4b/0x80 [ 163.756234][ C1] ? __pfx_kthread+0x10/0x10 [ 163.760855][ C1] ret_from_fork_asm+0x1a/0x30 [ 163.765661][ C1] [ 163.768747][ C1] [ 163.768747][ C1] Showing all locks held in the system: [ 163.776519][ C1] 3 locks held by kworker/0:1/9: [ 163.781476][ C1] 2 locks held by kworker/1:0/25: [ 163.786563][ C1] 2 locks held by kworker/u8:2/35: [ 163.791715][ C1] 3 locks held by kworker/u8:7/2826: [ 163.797065][ C1] 2 locks held by getty/4846: [ 163.801748][ C1] #0: ffff88802a7a90a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 163.811614][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 [ 163.821836][ C1] 1 lock held by syz-executor.0/5395: [ 163.827281][ C1] 2 locks held by syz-executor.3/5426: [ 163.832751][ C1] #0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x9a7/0xf80 [ 163.842706][ C1] #1: ffff88807db3c0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 [ 163.852941][ C1] 1 lock held by syz-executor.4/5435: [ 163.858395][ C1] #0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region+0x62/0xa0 [ 163.869396][ C1] 1 lock held by syz-executor.2/5441: [ 163.874779][ C1] #0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 [ 163.885768][ C1] 3 locks held by syz-executor.2/5446: [ 163.891282][ C1] #0: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 [ 163.901493][ C1] #1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0 [ 163.911357][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 163.921316][ C1] 5 locks held by syz-executor.1/5448: [ 163.926850][ C1] [ 163.929193][ C1] ============================================= [ 163.929193][ C1] [ 165.015985][ C1] DEBUG: holding rtnl_mutex for 8741 jiffies. [ 165.022170][ C1] task:kworker/u8:7 state:R running task stack:23600 pid:2826 tgid:2826 ppid:2 flags:0x00004000 [ 165.034052][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 165.040130][ C1] Call Trace: [ 165.043425][ C1] [ 165.046420][ C1] __schedule+0x17e8/0x4a20 [ 165.050988][ C1] ? ret_from_fork+0x4b/0x80 [ 165.055614][ C1] ? arch_stack_walk+0x174/0x1b0 [ 165.060633][ C1] ? __pfx___schedule+0x10/0x10 [ 165.065516][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 165.071590][ C1] ? preempt_schedule_irq+0xf0/0x1c0 [ 165.076960][ C1] preempt_schedule_irq+0xfb/0x1c0 [ 165.082104][ C1] ? __pfx_preempt_schedule_irq+0x10/0x10 [ 165.087919][ C1] irqentry_exit+0x5e/0x90 [ 165.092374][ C1] asm_sysvec_reschedule_ipi+0x1a/0x20 [ 165.097919][ C1] RIP: 0010:save_stack+0x185/0x1f0 [ 165.103066][ C1] Code: 44 2c 14 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 e0 00 00 00 75 6a 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 cc cc cc cc 89 d9 80 e1 07 fe c1 38 c1 0f 8c 14 ff ff ff 48 [ 165.122744][ C1] RSP: 0018:ffffc90009a17050 EFLAGS: 00000246 [ 165.128889][ C1] RAX: 00000000040a0252 RBX: 0000000000000000 RCX: ffff88802b5fda00 [ 165.136939][ C1] RDX: 0000000000000000 RSI: 00000000040a0252 RDI: 0000000000000000 [ 165.144927][ C1] RBP: ffffc90009a17050 R08: ffffffff82038425 R09: 0000000000000010 [ 165.153414][ C1] R10: 0000000000000003 R11: ffffffff817ef6f0 R12: 0000000000152820 [ 165.161464][ C1] R13: 0000000000000001 R14: ffffea0000b4e780 R15: dffffc0000000000 [ 165.169513][ C1] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 165.175700][ C1] ? save_stack+0x115/0x1f0 [ 165.180296][ C1] __set_page_owner+0x92/0x800 [ 165.185086][ C1] ? __pfx_seqcount_lockdep_reader_access+0x10/0x10 [ 165.191760][ C1] ? get_page_from_freelist+0x7d7/0x2d70 [ 165.197471][ C1] ? __pfx_lock_release+0x10/0x10 [ 165.202522][ C1] ? __pfx___set_page_owner+0x10/0x10 [ 165.207985][ C1] post_alloc_hook+0x1f3/0x230 [ 165.212780][ C1] get_page_from_freelist+0x2cbd/0x2d70 [ 165.218432][ C1] ? mark_lock+0x9a/0x360 [ 165.222817][ C1] __alloc_pages_noprof+0x256/0x6c0 [ 165.228099][ C1] ? __pfx___alloc_pages_noprof+0x10/0x10 [ 165.233857][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 165.239929][ C1] alloc_slab_page+0x5f/0x120 [ 165.244638][ C1] allocate_slab+0x5a/0x2f0 [ 165.249216][ C1] ___slab_alloc+0xcd1/0x14b0 [ 165.253937][ C1] ? __alloc_skb+0x1c3/0x440 [ 165.258621][ C1] ? __alloc_skb+0x1c3/0x440 [ 165.263236][ C1] __slab_alloc+0x58/0xa0 [ 165.267648][ C1] ? __alloc_skb+0x1c3/0x440 [ 165.272259][ C1] kmem_cache_alloc_node_noprof+0x1fe/0x320 [ 165.278236][ C1] __alloc_skb+0x1c3/0x440 [ 165.282685][ C1] ? __pfx___alloc_skb+0x10/0x10 [ 165.287692][ C1] ? __timer_delete+0xdf/0x380 [ 165.292489][ C1] __ipv6_ifa_notify+0x2e9/0x11f0 [ 165.297607][ C1] ? __pfx___ipv6_ifa_notify+0x10/0x10 [ 165.303087][ C1] ? mark_lock+0x9a/0x360 [ 165.307496][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 165.313505][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 165.319911][ C1] ? __cancel_work+0x24a/0x390 [ 165.324706][ C1] ? lockdep_hardirqs_on+0x99/0x150 [ 165.330000][ C1] ? __cancel_work+0x2ee/0x390 [ 165.334884][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 165.341296][ C1] addrconf_dad_completed+0x181/0xcd0 [ 165.346750][ C1] ? __pfx_addrconf_dad_completed+0x10/0x10 [ 165.352673][ C1] ? addrconf_dad_work+0x58a/0x16f0 [ 165.357976][ C1] addrconf_dad_work+0xdc2/0x16f0 [ 165.363048][ C1] ? __pfx_addrconf_dad_work+0x10/0x10 [ 165.368591][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 165.374967][ C1] ? process_scheduled_works+0x945/0x1830 [ 165.380762][ C1] process_scheduled_works+0xa2c/0x1830 [ 165.386406][ C1] ? __pfx_process_scheduled_works+0x10/0x10 [ 165.392422][ C1] ? assign_work+0x364/0x3d0 [ 165.397090][ C1] worker_thread+0x86d/0xd50 [ 165.401713][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 165.407682][ C1] ? __kthread_parkme+0x169/0x1d0 [ 165.412764][ C1] ? __pfx_worker_thread+0x10/0x10 [ 165.417974][ C1] kthread+0x2f0/0x390 [ 165.422072][ C1] ? __pfx_worker_thread+0x10/0x10 [ 165.427257][ C1] ? __pfx_kthread+0x10/0x10 [ 165.431871][ C1] ret_from_fork+0x4b/0x80 [ 165.436362][ C1] ? __pfx_kthread+0x10/0x10 [ 165.440985][ C1] ret_from_fork_asm+0x1a/0x30 [ 165.445787][ C1] [ 165.448876][ C1] [ 165.448876][ C1] Showing all locks held in the system: [ 165.456651][ C1] 3 locks held by kworker/0:1/9: [ 165.461607][ C1] 2 locks held by kworker/1:0/25: [ 165.466708][ C1] 2 locks held by kworker/u8:2/35: [ 165.471866][ C1] 3 locks held by kworker/u8:7/2826: [ 165.477221][ C1] 2 locks held by getty/4846: [ 165.481913][ C1] #0: ffff88802a7a90a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 165.491774][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 [ 165.501991][ C1] 1 lock held by syz-executor.0/5395: [ 165.507425][ C1] 2 locks held by syz-executor.3/5426: [ 165.512899][ C1] #0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x9a7/0xf80 [ 165.522837][ C1] #1: ffff88807db3c0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 [ 165.533078][ C1] 1 lock held by syz-executor.4/5435: [ 165.538507][ C1] #0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region+0x62/0xa0 [ 165.549484][ C1] 1 lock held by syz-executor.2/5441: [ 165.554955][ C1] #0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 [ 165.565989][ C1] 4 locks held by syz-executor.2/5446: [ 165.571463][ C1] #0: ffff88801eca9e18 (&mm->mmap_lock){++++}-{3:3}, at: __might_fault+0xaa/0x120 [ 165.580899][ C1] #1: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 [ 165.591194][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0 [ 165.601054][ C1] #3: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 165.610998][ C1] 5 locks held by syz-executor.1/5448: [ 165.616514][ C1] [ 165.618852][ C1] ============================================= [ 165.618852][ C1] [ 166.696018][ C1] DEBUG: holding rtnl_mutex for 8909 jiffies. [ 166.702209][ C1] task:kworker/u8:7 state:R running task stack:23600 pid:2826 tgid:2826 ppid:2 flags:0x00004000 [ 166.714101][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 166.720259][ C1] Call Trace: [ 166.723617][ C1] [ 166.726663][ C1] __schedule+0x17e8/0x4a20 [ 166.731266][ C1] ? ret_from_fork+0x4b/0x80 [ 166.736596][ C1] ? arch_stack_walk+0x174/0x1b0 [ 166.741615][ C1] ? __pfx___schedule+0x10/0x10 [ 166.746597][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 166.752673][ C1] ? preempt_schedule_irq+0xf0/0x1c0 [ 166.758161][ C1] preempt_schedule_irq+0xfb/0x1c0 [ 166.763498][ C1] ? __pfx_preempt_schedule_irq+0x10/0x10 [ 166.769547][ C1] irqentry_exit+0x5e/0x90 [ 166.774104][ C1] asm_sysvec_reschedule_ipi+0x1a/0x20 [ 166.779732][ C1] RIP: 0010:save_stack+0x185/0x1f0 [ 166.785068][ C1] Code: 44 2c 14 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 e0 00 00 00 75 6a 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 cc cc cc cc 89 d9 80 e1 07 fe c1 38 c1 0f 8c 14 ff ff ff 48 [ 166.804874][ C1] RSP: 0018:ffffc90009a17050 EFLAGS: 00000246 [ 166.811109][ C1] RAX: 00000000040a0252 RBX: 0000000000000000 RCX: ffff88802b5fda00 [ 166.819256][ C1] RDX: 0000000000000000 RSI: 00000000040a0252 RDI: 0000000000000000 [ 166.827406][ C1] RBP: ffffc90009a17050 R08: ffffffff82038425 R09: 0000000000000010 [ 166.835456][ C1] R10: 0000000000000003 R11: ffffffff817ef6f0 R12: 0000000000152820 [ 166.843582][ C1] R13: 0000000000000001 R14: ffffea0000b4e780 R15: dffffc0000000000 [ 166.851666][ C1] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 166.858045][ C1] ? save_stack+0x115/0x1f0 [ 166.862668][ C1] __set_page_owner+0x92/0x800 [ 166.867613][ C1] ? __pfx_seqcount_lockdep_reader_access+0x10/0x10 [ 166.874330][ C1] ? get_page_from_freelist+0x7d7/0x2d70 [ 166.880110][ C1] ? __pfx_lock_release+0x10/0x10 [ 166.885210][ C1] ? __pfx___set_page_owner+0x10/0x10 [ 166.890758][ C1] post_alloc_hook+0x1f3/0x230 [ 166.895648][ C1] get_page_from_freelist+0x2cbd/0x2d70 [ 166.901405][ C1] ? mark_lock+0x9a/0x360 [ 166.905895][ C1] __alloc_pages_noprof+0x256/0x6c0 [ 166.911201][ C1] ? __pfx___alloc_pages_noprof+0x10/0x10 [ 166.917087][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 166.923132][ C1] alloc_slab_page+0x5f/0x120 [ 166.927906][ C1] allocate_slab+0x5a/0x2f0 [ 166.932495][ C1] ___slab_alloc+0xcd1/0x14b0 [ 166.937309][ C1] ? __alloc_skb+0x1c3/0x440 [ 166.941964][ C1] ? __alloc_skb+0x1c3/0x440 [ 166.946641][ C1] __slab_alloc+0x58/0xa0 [ 166.951064][ C1] ? __alloc_skb+0x1c3/0x440 [ 166.955743][ C1] kmem_cache_alloc_node_noprof+0x1fe/0x320 [ 166.961783][ C1] __alloc_skb+0x1c3/0x440 [ 166.966333][ C1] ? __pfx___alloc_skb+0x10/0x10 [ 166.971358][ C1] ? __timer_delete+0xdf/0x380 [ 166.976264][ C1] __ipv6_ifa_notify+0x2e9/0x11f0 [ 166.982024][ C1] ? __pfx___ipv6_ifa_notify+0x10/0x10 [ 166.987669][ C1] ? mark_lock+0x9a/0x360 [ 166.992113][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 166.998284][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 167.004756][ C1] ? __cancel_work+0x24a/0x390 [ 167.009687][ C1] ? lockdep_hardirqs_on+0x99/0x150 [ 167.014997][ C1] ? __cancel_work+0x2ee/0x390 [ 167.019920][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 167.026555][ C1] addrconf_dad_completed+0x181/0xcd0 [ 167.032052][ C1] ? __pfx_addrconf_dad_completed+0x10/0x10 [ 167.038142][ C1] ? addrconf_dad_work+0x58a/0x16f0 [ 167.043412][ C1] addrconf_dad_work+0xdc2/0x16f0 [ 167.048608][ C1] ? __pfx_addrconf_dad_work+0x10/0x10 [ 167.054225][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 167.060709][ C1] ? process_scheduled_works+0x945/0x1830 [ 167.066529][ C1] process_scheduled_works+0xa2c/0x1830 [ 167.072221][ C1] ? __pfx_process_scheduled_works+0x10/0x10 [ 167.078346][ C1] ? assign_work+0x364/0x3d0 [ 167.083003][ C1] worker_thread+0x86d/0xd50 [ 167.087739][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 167.093761][ C1] ? __kthread_parkme+0x169/0x1d0 [ 167.098940][ C1] ? __pfx_worker_thread+0x10/0x10 [ 167.104118][ C1] kthread+0x2f0/0x390 [ 167.108319][ C1] ? __pfx_worker_thread+0x10/0x10 [ 167.113519][ C1] ? __pfx_kthread+0x10/0x10 [ 167.118302][ C1] ret_from_fork+0x4b/0x80 [ 167.122781][ C1] ? __pfx_kthread+0x10/0x10 [ 167.127472][ C1] ret_from_fork_asm+0x1a/0x30 [ 167.132372][ C1] [ 167.135448][ C1] [ 167.135448][ C1] Showing all locks held in the system: [ 167.143288][ C1] 3 locks held by kworker/0:1/9: [ 167.148349][ C1] 2 locks held by kworker/1:0/25: [ 167.153440][ C1] 3 locks held by kworker/1:0H/26: [ 167.158684][ C1] #0: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 [ 167.168969][ C1] #1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0 [ 167.178948][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 167.188984][ C1] 2 locks held by kworker/u8:2/35: [ 167.194172][ C1] 3 locks held by kworker/u8:7/2826: [ 167.199581][ C1] 2 locks held by getty/4846: [ 167.204307][ C1] #0: ffff88802a7a90a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 167.214349][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 [ 167.224697][ C1] 1 lock held by syz-executor.0/5395: [ 167.230233][ C1] 2 locks held by syz-executor.3/5426: [ 167.235742][ C1] #0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x9a7/0xf80 [ 167.245814][ C1] #1: ffff88807db3c0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 [ 167.256246][ C1] 1 lock held by syz-executor.4/5435: [ 167.261738][ C1] #0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region+0x62/0xa0 [ 167.272888][ C1] 1 lock held by syz-executor.2/5441: [ 167.278389][ C1] #0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 [ 167.289482][ C1] 5 locks held by syz-executor.1/5448: [ 167.294995][ C1] [ 167.297409][ C1] ============================================= [ 167.297409][ C1] [ 168.375995][ C1] DEBUG: holding rtnl_mutex for 9077 jiffies. [ 168.382279][ C1] task:kworker/u8:7 state:R running task stack:23600 pid:2826 tgid:2826 ppid:2 flags:0x00004000 [ 168.394324][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 168.400469][ C1] Call Trace: [ 168.403802][ C1] [ 168.406934][ C1] __schedule+0x17e8/0x4a20 [ 168.411549][ C1] ? ret_from_fork+0x4b/0x80 [ 168.416305][ C1] ? arch_stack_walk+0x174/0x1b0 [ 168.421394][ C1] ? __pfx___schedule+0x10/0x10 [ 168.426360][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 168.432585][ C1] ? preempt_schedule_irq+0xf0/0x1c0 [ 168.438055][ C1] preempt_schedule_irq+0xfb/0x1c0 [ 168.443264][ C1] ? __pfx_preempt_schedule_irq+0x10/0x10 [ 168.449128][ C1] irqentry_exit+0x5e/0x90 [ 168.453643][ C1] asm_sysvec_reschedule_ipi+0x1a/0x20 [ 168.459260][ C1] RIP: 0010:save_stack+0x185/0x1f0 [ 168.464440][ C1] Code: 44 2c 14 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 e0 00 00 00 75 6a 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 cc cc cc cc 89 d9 80 e1 07 fe c1 38 c1 0f 8c 14 ff ff ff 48 [ 168.484232][ C1] RSP: 0018:ffffc90009a17050 EFLAGS: 00000246 [ 168.490475][ C1] RAX: 00000000040a0252 RBX: 0000000000000000 RCX: ffff88802b5fda00 [ 168.498578][ C1] RDX: 0000000000000000 RSI: 00000000040a0252 RDI: 0000000000000000 [ 168.506660][ C1] RBP: ffffc90009a17050 R08: ffffffff82038425 R09: 0000000000000010 [ 168.514714][ C1] R10: 0000000000000003 R11: ffffffff817ef6f0 R12: 0000000000152820 [ 168.522819][ C1] R13: 0000000000000001 R14: ffffea0000b4e780 R15: dffffc0000000000 [ 168.530932][ C1] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 168.537238][ C1] ? save_stack+0x115/0x1f0 [ 168.541818][ C1] __set_page_owner+0x92/0x800 [ 168.546714][ C1] ? __pfx_seqcount_lockdep_reader_access+0x10/0x10 [ 168.553375][ C1] ? get_page_from_freelist+0x7d7/0x2d70 [ 168.559168][ C1] ? __pfx_lock_release+0x10/0x10 [ 168.564259][ C1] ? __pfx___set_page_owner+0x10/0x10 [ 168.569773][ C1] post_alloc_hook+0x1f3/0x230 [ 168.574663][ C1] get_page_from_freelist+0x2cbd/0x2d70 [ 168.580367][ C1] ? mark_lock+0x9a/0x360 [ 168.584846][ C1] __alloc_pages_noprof+0x256/0x6c0 [ 168.590182][ C1] ? __pfx___alloc_pages_noprof+0x10/0x10 [ 168.596010][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 168.602117][ C1] alloc_slab_page+0x5f/0x120 [ 168.606895][ C1] allocate_slab+0x5a/0x2f0 [ 168.611502][ C1] ___slab_alloc+0xcd1/0x14b0 [ 168.616371][ C1] ? __alloc_skb+0x1c3/0x440 [ 168.621029][ C1] ? __alloc_skb+0x1c3/0x440 [ 168.625671][ C1] __slab_alloc+0x58/0xa0 [ 168.630152][ C1] ? __alloc_skb+0x1c3/0x440 [ 168.634847][ C1] kmem_cache_alloc_node_noprof+0x1fe/0x320 [ 168.640901][ C1] __alloc_skb+0x1c3/0x440 [ 168.645415][ C1] ? __pfx___alloc_skb+0x10/0x10 [ 168.650494][ C1] ? __timer_delete+0xdf/0x380 [ 168.655357][ C1] __ipv6_ifa_notify+0x2e9/0x11f0 [ 168.660523][ C1] ? __pfx___ipv6_ifa_notify+0x10/0x10 [ 168.668759][ C1] ? mark_lock+0x9a/0x360 [ 168.673155][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 168.679273][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 168.685696][ C1] ? __cancel_work+0x24a/0x390 [ 168.690559][ C1] ? lockdep_hardirqs_on+0x99/0x150 [ 168.695863][ C1] ? __cancel_work+0x2ee/0x390 [ 168.700970][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 168.707403][ C1] addrconf_dad_completed+0x181/0xcd0 [ 168.712911][ C1] ? __pfx_addrconf_dad_completed+0x10/0x10 [ 168.719006][ C1] ? addrconf_dad_work+0x58a/0x16f0 [ 168.724329][ C1] addrconf_dad_work+0xdc2/0x16f0 [ 168.729535][ C1] ? __pfx_addrconf_dad_work+0x10/0x10 [ 168.735057][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 168.741596][ C1] ? process_scheduled_works+0x945/0x1830 [ 168.747446][ C1] process_scheduled_works+0xa2c/0x1830 [ 168.753146][ C1] ? __pfx_process_scheduled_works+0x10/0x10 [ 168.759306][ C1] ? assign_work+0x364/0x3d0 [ 168.763972][ C1] worker_thread+0x86d/0xd50 [ 168.768711][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 168.774711][ C1] ? __kthread_parkme+0x169/0x1d0 [ 168.779871][ C1] ? __pfx_worker_thread+0x10/0x10 [ 168.785039][ C1] kthread+0x2f0/0x390 [ 168.789211][ C1] ? __pfx_worker_thread+0x10/0x10 [ 168.794410][ C1] ? __pfx_kthread+0x10/0x10 [ 168.799134][ C1] ret_from_fork+0x4b/0x80 [ 168.803641][ C1] ? __pfx_kthread+0x10/0x10 [ 168.808337][ C1] ret_from_fork_asm+0x1a/0x30 [ 168.813292][ C1] [ 168.816425][ C1] [ 168.816425][ C1] Showing all locks held in the system: [ 168.824192][ C1] 3 locks held by kworker/0:1/9: [ 168.829347][ C1] 2 locks held by kworker/1:0/25: [ 168.834412][ C1] 3 locks held by kworker/1:0H/26: [ 168.839688][ C1] #0: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 [ 168.850040][ C1] #1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0 [ 168.860023][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 168.870067][ C1] 2 locks held by kworker/u8:2/35: [ 168.875265][ C1] 3 locks held by kworker/u8:7/2826: [ 168.880687][ C1] 2 locks held by getty/4846: [ 168.885431][ C1] #0: ffff88802a7a90a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 168.895399][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 [ 168.905717][ C1] 1 lock held by syz-executor.0/5395: [ 168.911214][ C1] 2 locks held by syz-executor.3/5426: [ 168.916755][ C1] #0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x9a7/0xf80 [ 168.926785][ C1] #1: ffff88807db3c0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 [ 168.937176][ C1] 1 lock held by syz-executor.4/5435: [ 168.942625][ C1] #0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region+0x62/0xa0 [ 168.953790][ C1] 1 lock held by syz-executor.2/5441: [ 168.959300][ C1] #0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 [ 168.970396][ C1] 5 locks held by syz-executor.1/5448: [ 168.975959][ C1] [ 168.978325][ C1] ============================================= [ 168.978325][ C1] [ 170.055970][ C1] DEBUG: holding rtnl_mutex for 9245 jiffies. [ 170.062101][ C1] task:kworker/u8:7 state:R running task stack:23600 pid:2826 tgid:2826 ppid:2 flags:0x00004000 [ 170.073969][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 170.080054][ C1] Call Trace: [ 170.083349][ C1] [ 170.086391][ C1] __schedule+0x17e8/0x4a20 [ 170.090945][ C1] ? ret_from_fork+0x4b/0x80 [ 170.095563][ C1] ? arch_stack_walk+0x174/0x1b0 [ 170.100610][ C1] ? __pfx___schedule+0x10/0x10 [ 170.105488][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 170.111571][ C1] ? preempt_schedule_irq+0xf0/0x1c0 [ 170.116935][ C1] preempt_schedule_irq+0xfb/0x1c0 [ 170.122079][ C1] ? __pfx_preempt_schedule_irq+0x10/0x10 [ 170.127937][ C1] irqentry_exit+0x5e/0x90 [ 170.132384][ C1] asm_sysvec_reschedule_ipi+0x1a/0x20 [ 170.137940][ C1] RIP: 0010:save_stack+0x185/0x1f0 [ 170.143077][ C1] Code: 44 2c 14 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 e0 00 00 00 75 6a 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 cc cc cc cc 89 d9 80 e1 07 fe c1 38 c1 0f 8c 14 ff ff ff 48 [ 170.162808][ C1] RSP: 0018:ffffc90009a17050 EFLAGS: 00000246 [ 170.168971][ C1] RAX: 00000000040a0252 RBX: 0000000000000000 RCX: ffff88802b5fda00 [ 170.177027][ C1] RDX: 0000000000000000 RSI: 00000000040a0252 RDI: 0000000000000000 [ 170.185023][ C1] RBP: ffffc90009a17050 R08: ffffffff82038425 R09: 0000000000000010 [ 170.193075][ C1] R10: 0000000000000003 R11: ffffffff817ef6f0 R12: 0000000000152820 [ 170.201128][ C1] R13: 0000000000000001 R14: ffffea0000b4e780 R15: dffffc0000000000 [ 170.209180][ C1] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 170.215366][ C1] ? save_stack+0x115/0x1f0 [ 170.219956][ C1] __set_page_owner+0x92/0x800 [ 170.224765][ C1] ? __pfx_seqcount_lockdep_reader_access+0x10/0x10 [ 170.231496][ C1] ? get_page_from_freelist+0x7d7/0x2d70 [ 170.237232][ C1] ? __pfx_lock_release+0x10/0x10 [ 170.242287][ C1] ? __pfx___set_page_owner+0x10/0x10 [ 170.247743][ C1] post_alloc_hook+0x1f3/0x230 [ 170.252538][ C1] get_page_from_freelist+0x2cbd/0x2d70 [ 170.258196][ C1] ? mark_lock+0x9a/0x360 [ 170.262582][ C1] __alloc_pages_noprof+0x256/0x6c0 [ 170.267960][ C1] ? __pfx___alloc_pages_noprof+0x10/0x10 [ 170.273725][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 170.279806][ C1] alloc_slab_page+0x5f/0x120 [ 170.284508][ C1] allocate_slab+0x5a/0x2f0 [ 170.289097][ C1] ___slab_alloc+0xcd1/0x14b0 [ 170.293805][ C1] ? __alloc_skb+0x1c3/0x440 [ 170.298481][ C1] ? __alloc_skb+0x1c3/0x440 [ 170.303091][ C1] __slab_alloc+0x58/0xa0 [ 170.307506][ C1] ? __alloc_skb+0x1c3/0x440 [ 170.312118][ C1] kmem_cache_alloc_node_noprof+0x1fe/0x320 [ 170.318105][ C1] __alloc_skb+0x1c3/0x440 [ 170.322552][ C1] ? __pfx___alloc_skb+0x10/0x10 [ 170.327562][ C1] ? __timer_delete+0xdf/0x380 [ 170.332360][ C1] __ipv6_ifa_notify+0x2e9/0x11f0 [ 170.337486][ C1] ? __pfx___ipv6_ifa_notify+0x10/0x10 [ 170.342966][ C1] ? mark_lock+0x9a/0x360 [ 170.347381][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 170.353410][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 170.359858][ C1] ? __cancel_work+0x24a/0x390 [ 170.364662][ C1] ? lockdep_hardirqs_on+0x99/0x150 [ 170.369961][ C1] ? __cancel_work+0x2ee/0x390 [ 170.374769][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 170.381206][ C1] addrconf_dad_completed+0x181/0xcd0 [ 170.386683][ C1] ? __pfx_addrconf_dad_completed+0x10/0x10 [ 170.392623][ C1] ? addrconf_dad_work+0x58a/0x16f0 [ 170.397912][ C1] addrconf_dad_work+0xdc2/0x16f0 [ 170.402976][ C1] ? __pfx_addrconf_dad_work+0x10/0x10 [ 170.408517][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 170.414918][ C1] ? process_scheduled_works+0x945/0x1830 [ 170.420728][ C1] process_scheduled_works+0xa2c/0x1830 [ 170.426380][ C1] ? __pfx_process_scheduled_works+0x10/0x10 [ 170.432408][ C1] ? assign_work+0x364/0x3d0 [ 170.437082][ C1] worker_thread+0x86d/0xd50 [ 170.441713][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 170.447692][ C1] ? __kthread_parkme+0x169/0x1d0 [ 170.452746][ C1] ? __pfx_worker_thread+0x10/0x10 [ 170.457946][ C1] kthread+0x2f0/0x390 [ 170.462042][ C1] ? __pfx_worker_thread+0x10/0x10 [ 170.467236][ C1] ? __pfx_kthread+0x10/0x10 [ 170.471851][ C1] ret_from_fork+0x4b/0x80 [ 170.476340][ C1] ? __pfx_kthread+0x10/0x10 [ 170.480967][ C1] ret_from_fork_asm+0x1a/0x30 [ 170.485779][ C1] [ 170.488883][ C1] [ 170.488883][ C1] Showing all locks held in the system: [ 170.496666][ C1] 3 locks held by kworker/0:1/9: [ 170.501639][ C1] 2 locks held by kworker/1:0/25: [ 170.506779][ C1] 2 locks held by kworker/u8:2/35: [ 170.511956][ C1] 3 locks held by kworker/u8:7/2826: [ 170.517350][ C1] 2 locks held by getty/4846: [ 170.522053][ C1] #0: ffff88802a7a90a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 170.531933][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 [ 170.542167][ C1] 1 lock held by syz-executor.0/5395: [ 170.547647][ C1] 2 locks held by syz-executor.3/5426: [ 170.553132][ C1] #0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x9a7/0xf80 [ 170.563107][ C1] #1: ffff88807db3c0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 [ 170.573353][ C1] 1 lock held by syz-executor.4/5435: [ 170.578800][ C1] #0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region+0x62/0xa0 [ 170.589810][ C1] 1 lock held by syz-executor.2/5441: [ 170.595197][ C1] #0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 [ 170.606203][ C1] 4 locks held by syz-executor.2/5446: [ 170.611673][ C1] #0: ffff88801eca9e18 (&mm->mmap_lock){++++}-{3:3}, at: __might_fault+0xaa/0x120 [ 170.621100][ C1] #1: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 [ 170.631333][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0 [ 170.641208][ C1] #3: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 170.651154][ C1] 5 locks held by syz-executor.1/5448: [ 170.656677][ C1] [ 170.659025][ C1] ============================================= [ 170.659025][ C1] [ 171.735985][ C1] DEBUG: holding rtnl_mutex for 9413 jiffies. [ 171.742186][ C1] task:kworker/u8:7 state:R running task stack:23600 pid:2826 tgid:2826 ppid:2 flags:0x00004000 [ 171.754083][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 171.760216][ C1] Call Trace: [ 171.763543][ C1] [ 171.766562][ C1] __schedule+0x17e8/0x4a20 [ 171.771175][ C1] ? ret_from_fork+0x4b/0x80 [ 171.775863][ C1] ? arch_stack_walk+0x174/0x1b0 [ 171.780968][ C1] ? __pfx___schedule+0x10/0x10 [ 171.785883][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 171.792042][ C1] ? preempt_schedule_irq+0xf0/0x1c0 [ 171.797476][ C1] preempt_schedule_irq+0xfb/0x1c0 [ 171.802652][ C1] ? __pfx_preempt_schedule_irq+0x10/0x10 [ 171.808526][ C1] irqentry_exit+0x5e/0x90 [ 171.813022][ C1] asm_sysvec_reschedule_ipi+0x1a/0x20 [ 171.818626][ C1] RIP: 0010:save_stack+0x185/0x1f0 [ 171.823834][ C1] Code: 44 2c 14 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 e0 00 00 00 75 6a 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 cc cc cc cc 89 d9 80 e1 07 fe c1 38 c1 0f 8c 14 ff ff ff 48 [ 171.843547][ C1] RSP: 0018:ffffc90009a17050 EFLAGS: 00000246 [ 171.849769][ C1] RAX: 00000000040a0252 RBX: 0000000000000000 RCX: ffff88802b5fda00 [ 171.857891][ C1] RDX: 0000000000000000 RSI: 00000000040a0252 RDI: 0000000000000000 [ 171.865997][ C1] RBP: ffffc90009a17050 R08: ffffffff82038425 R09: 0000000000000010 [ 171.874026][ C1] R10: 0000000000000003 R11: ffffffff817ef6f0 R12: 0000000000152820 [ 171.882156][ C1] R13: 0000000000000001 R14: ffffea0000b4e780 R15: dffffc0000000000 [ 171.890256][ C1] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 171.896550][ C1] ? save_stack+0x115/0x1f0 [ 171.901156][ C1] __set_page_owner+0x92/0x800 [ 171.906019][ C1] ? __pfx_seqcount_lockdep_reader_access+0x10/0x10 [ 171.912683][ C1] ? get_page_from_freelist+0x7d7/0x2d70 [ 171.918467][ C1] ? __pfx_lock_release+0x10/0x10 [ 171.923561][ C1] ? __pfx___set_page_owner+0x10/0x10 [ 171.929086][ C1] post_alloc_hook+0x1f3/0x230 [ 171.933945][ C1] get_page_from_freelist+0x2cbd/0x2d70 [ 171.939623][ C1] ? mark_lock+0x9a/0x360 [ 171.944068][ C1] __alloc_pages_noprof+0x256/0x6c0 [ 171.949417][ C1] ? __pfx___alloc_pages_noprof+0x10/0x10 [ 171.955241][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 171.961402][ C1] alloc_slab_page+0x5f/0x120 [ 171.966203][ C1] allocate_slab+0x5a/0x2f0 [ 171.970762][ C1] ___slab_alloc+0xcd1/0x14b0 [ 171.975535][ C1] ? __alloc_skb+0x1c3/0x440 [ 171.980239][ C1] ? __alloc_skb+0x1c3/0x440 [ 171.984921][ C1] __slab_alloc+0x58/0xa0 [ 171.989446][ C1] ? __alloc_skb+0x1c3/0x440 [ 171.994128][ C1] kmem_cache_alloc_node_noprof+0x1fe/0x320 [ 172.000168][ C1] __alloc_skb+0x1c3/0x440 [ 172.004711][ C1] ? __pfx___alloc_skb+0x10/0x10 [ 172.009898][ C1] ? __timer_delete+0xdf/0x380 [ 172.014814][ C1] __ipv6_ifa_notify+0x2e9/0x11f0 [ 172.020046][ C1] ? __pfx___ipv6_ifa_notify+0x10/0x10 [ 172.025571][ C1] ? mark_lock+0x9a/0x360 [ 172.030040][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 172.036133][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 172.042596][ C1] ? __cancel_work+0x24a/0x390 [ 172.047468][ C1] ? lockdep_hardirqs_on+0x99/0x150 [ 172.052767][ C1] ? __cancel_work+0x2ee/0x390 [ 172.057689][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 172.064117][ C1] addrconf_dad_completed+0x181/0xcd0 [ 172.069669][ C1] ? __pfx_addrconf_dad_completed+0x10/0x10 [ 172.075669][ C1] ? addrconf_dad_work+0x58a/0x16f0 [ 172.081022][ C1] addrconf_dad_work+0xdc2/0x16f0 [ 172.086213][ C1] ? __pfx_addrconf_dad_work+0x10/0x10 [ 172.091765][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 172.098246][ C1] ? process_scheduled_works+0x945/0x1830 [ 172.104030][ C1] process_scheduled_works+0xa2c/0x1830 [ 172.109752][ C1] ? __pfx_process_scheduled_works+0x10/0x10 [ 172.115815][ C1] ? assign_work+0x364/0x3d0 [ 172.120894][ C1] worker_thread+0x86d/0xd50 [ 172.125559][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 172.131623][ C1] ? __kthread_parkme+0x169/0x1d0 [ 172.136791][ C1] ? __pfx_worker_thread+0x10/0x10 [ 172.141963][ C1] kthread+0x2f0/0x390 [ 172.146175][ C1] ? __pfx_worker_thread+0x10/0x10 [ 172.151344][ C1] ? __pfx_kthread+0x10/0x10 [ 172.156092][ C1] ret_from_fork+0x4b/0x80 [ 172.160597][ C1] ? __pfx_kthread+0x10/0x10 [ 172.165243][ C1] ret_from_fork_asm+0x1a/0x30 [ 172.170157][ C1] [ 172.173251][ C1] [ 172.173251][ C1] Showing all locks held in the system: [ 172.181053][ C1] 3 locks held by kworker/0:1/9: [ 172.186138][ C1] 2 locks held by kworker/1:0/25: [ 172.191228][ C1] 3 locks held by kworker/1:0H/26: [ 172.196515][ C1] #0: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 [ 172.206876][ C1] #1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0 [ 172.216819][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 172.226844][ C1] 2 locks held by kworker/u8:2/35: [ 172.232048][ C1] 3 locks held by kworker/u8:7/2826: [ 172.237489][ C1] 2 locks held by getty/4846: [ 172.242210][ C1] #0: ffff88802a7a90a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 172.252224][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 [ 172.262539][ C1] 1 lock held by syz-executor.0/5395: [ 172.268005][ C1] 2 locks held by syz-executor.3/5426: [ 172.273535][ C1] #0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x9a7/0xf80 [ 172.283607][ C1] #1: ffff88807db3c0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 [ 172.293976][ C1] 1 lock held by syz-executor.4/5435: [ 172.299468][ C1] #0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region+0x62/0xa0 [ 172.310551][ C1] 1 lock held by syz-executor.2/5441: [ 172.316075][ C1] #0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 [ 172.327182][ C1] 1 lock held by syz-executor.2/5444: [ 172.332607][ C1] 5 locks held by syz-executor.1/5448: [ 172.338214][ C1] [ 172.340579][ C1] ============================================= [ 172.340579][ C1] [ 173.415978][ C1] DEBUG: holding rtnl_mutex for 9581 jiffies. [ 173.422227][ C1] task:kworker/u8:7 state:R running task stack:23600 pid:2826 tgid:2826 ppid:2 flags:0x00004000 [ 173.434268][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 173.440509][ C1] Call Trace: [ 173.443880][ C1] [ 173.446927][ C1] __schedule+0x17e8/0x4a20 [ 173.451556][ C1] ? ret_from_fork+0x4b/0x80 [ 173.456362][ C1] ? arch_stack_walk+0x174/0x1b0 [ 173.461439][ C1] ? __pfx___schedule+0x10/0x10 [ 173.466457][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 173.472590][ C1] ? preempt_schedule_irq+0xf0/0x1c0 [ 173.478041][ C1] preempt_schedule_irq+0xfb/0x1c0 [ 173.483295][ C1] ? __pfx_preempt_schedule_irq+0x10/0x10 [ 173.489260][ C1] irqentry_exit+0x5e/0x90 [ 173.493817][ C1] asm_sysvec_reschedule_ipi+0x1a/0x20 [ 173.499472][ C1] RIP: 0010:save_stack+0x185/0x1f0 [ 173.504691][ C1] Code: 44 2c 14 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 e0 00 00 00 75 6a 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 cc cc cc cc 89 d9 80 e1 07 fe c1 38 c1 0f 8c 14 ff ff ff 48 [ 173.524517][ C1] RSP: 0018:ffffc90009a17050 EFLAGS: 00000246 [ 173.530823][ C1] RAX: 00000000040a0252 RBX: 0000000000000000 RCX: ffff88802b5fda00 [ 173.539050][ C1] RDX: 0000000000000000 RSI: 00000000040a0252 RDI: 0000000000000000 [ 173.547182][ C1] RBP: ffffc90009a17050 R08: ffffffff82038425 R09: 0000000000000010 [ 173.555308][ C1] R10: 0000000000000003 R11: ffffffff817ef6f0 R12: 0000000000152820 [ 173.563471][ C1] R13: 0000000000000001 R14: ffffea0000b4e780 R15: dffffc0000000000 [ 173.571660][ C1] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 173.578018][ C1] ? save_stack+0x115/0x1f0 [ 173.582638][ C1] __set_page_owner+0x92/0x800 [ 173.587620][ C1] ? __pfx_seqcount_lockdep_reader_access+0x10/0x10 [ 173.594351][ C1] ? get_page_from_freelist+0x7d7/0x2d70 [ 173.600211][ C1] ? __pfx_lock_release+0x10/0x10 [ 173.605376][ C1] ? __pfx___set_page_owner+0x10/0x10 [ 173.610978][ C1] post_alloc_hook+0x1f3/0x230 [ 173.615850][ C1] get_page_from_freelist+0x2cbd/0x2d70 [ 173.621633][ C1] ? mark_lock+0x9a/0x360 [ 173.626212][ C1] __alloc_pages_noprof+0x256/0x6c0 [ 173.631517][ C1] ? __pfx___alloc_pages_noprof+0x10/0x10 [ 173.637403][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 173.643498][ C1] alloc_slab_page+0x5f/0x120 [ 173.648368][ C1] allocate_slab+0x5a/0x2f0 [ 173.652979][ C1] ___slab_alloc+0xcd1/0x14b0 [ 173.657884][ C1] ? __alloc_skb+0x1c3/0x440 [ 173.662584][ C1] ? __alloc_skb+0x1c3/0x440 [ 173.667381][ C1] __slab_alloc+0x58/0xa0 [ 173.671780][ C1] ? __alloc_skb+0x1c3/0x440 [ 173.676551][ C1] kmem_cache_alloc_node_noprof+0x1fe/0x320 [ 173.682559][ C1] __alloc_skb+0x1c3/0x440 [ 173.687201][ C1] ? __pfx___alloc_skb+0x10/0x10 [ 173.692299][ C1] ? __timer_delete+0xdf/0x380 [ 173.697260][ C1] __ipv6_ifa_notify+0x2e9/0x11f0 [ 173.702393][ C1] ? __pfx___ipv6_ifa_notify+0x10/0x10 [ 173.708039][ C1] ? mark_lock+0x9a/0x360 [ 173.712519][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 173.718701][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 173.725288][ C1] ? __cancel_work+0x24a/0x390 [ 173.730291][ C1] ? lockdep_hardirqs_on+0x99/0x150 [ 173.735741][ C1] ? __cancel_work+0x2ee/0x390 [ 173.740733][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 173.747300][ C1] addrconf_dad_completed+0x181/0xcd0 [ 173.752790][ C1] ? __pfx_addrconf_dad_completed+0x10/0x10 [ 173.758902][ C1] ? addrconf_dad_work+0x58a/0x16f0 [ 173.764220][ C1] addrconf_dad_work+0xdc2/0x16f0 [ 173.769477][ C1] ? __pfx_addrconf_dad_work+0x10/0x10 [ 173.775096][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 173.781675][ C1] ? process_scheduled_works+0x945/0x1830 [ 173.787588][ C1] process_scheduled_works+0xa2c/0x1830 [ 173.793298][ C1] ? __pfx_process_scheduled_works+0x10/0x10 [ 173.799451][ C1] ? assign_work+0x364/0x3d0 [ 173.804183][ C1] worker_thread+0x86d/0xd50 [ 173.808995][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 173.815052][ C1] ? __kthread_parkme+0x169/0x1d0 [ 173.820247][ C1] ? __pfx_worker_thread+0x10/0x10 [ 173.825465][ C1] kthread+0x2f0/0x390 [ 173.829724][ C1] ? __pfx_worker_thread+0x10/0x10 [ 173.834970][ C1] ? __pfx_kthread+0x10/0x10 [ 173.839781][ C1] ret_from_fork+0x4b/0x80 [ 173.844295][ C1] ? __pfx_kthread+0x10/0x10 [ 173.849034][ C1] ret_from_fork_asm+0x1a/0x30 [ 173.853917][ C1] [ 173.857546][ C1] [ 173.857546][ C1] Showing all locks held in the system: [ 173.865355][ C1] 3 locks held by kworker/0:1/9: [ 173.870469][ C1] 2 locks held by kworker/1:0/25: [ 173.875617][ C1] 2 locks held by kworker/u8:2/35: [ 173.880937][ C1] 3 locks held by kworker/u8:7/2826: [ 173.886399][ C1] 2 locks held by getty/4846: [ 173.891171][ C1] #0: ffff88802a7a90a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 173.901239][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 [ 173.911684][ C1] 1 lock held by syz-executor.0/5395: [ 173.917240][ C1] 2 locks held by syz-executor.3/5426: [ 173.922766][ C1] #0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x9a7/0xf80 [ 173.932909][ C1] #1: ffff88807db3c0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 [ 173.943342][ C1] 1 lock held by syz-executor.4/5435: [ 173.948886][ C1] #0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region+0x62/0xa0 [ 173.960041][ C1] 1 lock held by syz-executor.2/5441: [ 173.965509][ C1] #0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 [ 173.976670][ C1] 3 locks held by syz-executor.2/5447: [ 173.982345][ C1] #0: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 [ 173.992753][ C1] #1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0 [ 174.002862][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 174.013035][ C1] 5 locks held by syz-executor.1/5448: [ 174.018652][ C1] [ 174.021114][ C1] ============================================= [ 174.021114][ C1] [ 175.095974][ C1] DEBUG: holding rtnl_mutex for 9749 jiffies. [ 175.102189][ C1] task:kworker/u8:7 state:R running task stack:23600 pid:2826 tgid:2826 ppid:2 flags:0x00004000 [ 175.114031][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 175.120109][ C1] Call Trace: [ 175.123406][ C1] [ 175.126435][ C1] __schedule+0x17e8/0x4a20 [ 175.130973][ C1] ? mark_lock+0x9a/0x360 [ 175.135336][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 175.141400][ C1] ? ret_from_fork+0x4b/0x80 [ 175.146063][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 175.152421][ C1] ? arch_stack_walk+0x174/0x1b0 [ 175.157439][ C1] ? __pfx___schedule+0x10/0x10 [ 175.162322][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 175.168400][ C1] ? preempt_schedule_irq+0xf0/0x1c0 [ 175.173716][ C1] preempt_schedule_irq+0xfb/0x1c0 [ 175.178908][ C1] ? __pfx_preempt_schedule_irq+0x10/0x10 [ 175.184673][ C1] irqentry_exit+0x5e/0x90 [ 175.189185][ C1] asm_sysvec_reschedule_ipi+0x1a/0x20 [ 175.194680][ C1] RIP: 0010:save_stack+0x185/0x1f0 [ 175.199876][ C1] Code: 44 2c 14 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 e0 00 00 00 75 6a 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 cc cc cc cc 89 d9 80 e1 07 fe c1 38 c1 0f 8c 14 ff ff ff 48 [ 175.219588][ C1] RSP: 0018:ffffc90009a17050 EFLAGS: 00000246 [ 175.225691][ C1] RAX: 00000000040a0252 RBX: 0000000000000000 RCX: ffff88802b5fda00 [ 175.233749][ C1] RDX: 0000000000000000 RSI: 00000000040a0252 RDI: 0000000000000000 [ 175.241796][ C1] RBP: ffffc90009a17050 R08: ffffffff82038425 R09: 0000000000000010 [ 175.249849][ C1] R10: 0000000000000003 R11: ffffffff817ef6f0 R12: 0000000000152820 [ 175.257898][ C1] R13: 0000000000000001 R14: ffffea0000b4e780 R15: dffffc0000000000 [ 175.265944][ C1] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 175.272130][ C1] ? save_stack+0x115/0x1f0 [ 175.276730][ C1] __set_page_owner+0x92/0x800 [ 175.281526][ C1] ? __pfx_seqcount_lockdep_reader_access+0x10/0x10 [ 175.288195][ C1] ? get_page_from_freelist+0x7d7/0x2d70 [ 175.293888][ C1] ? __pfx_lock_release+0x10/0x10 [ 175.299011][ C1] ? __pfx___set_page_owner+0x10/0x10 [ 175.304423][ C1] post_alloc_hook+0x1f3/0x230 [ 175.309281][ C1] get_page_from_freelist+0x2cbd/0x2d70 [ 175.314881][ C1] ? mark_lock+0x9a/0x360 [ 175.319311][ C1] __alloc_pages_noprof+0x256/0x6c0 [ 175.324538][ C1] ? __pfx___alloc_pages_noprof+0x10/0x10 [ 175.330428][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 175.336496][ C1] alloc_slab_page+0x5f/0x120 [ 175.341205][ C1] allocate_slab+0x5a/0x2f0 [ 175.345821][ C1] ___slab_alloc+0xcd1/0x14b0 [ 175.350788][ C1] ? __alloc_skb+0x1c3/0x440 [ 175.355408][ C1] ? __alloc_skb+0x1c3/0x440 [ 175.360725][ C1] __slab_alloc+0x58/0xa0 [ 175.365104][ C1] ? __alloc_skb+0x1c3/0x440 [ 175.369783][ C1] kmem_cache_alloc_node_noprof+0x1fe/0x320 [ 175.375719][ C1] __alloc_skb+0x1c3/0x440 [ 175.380227][ C1] ? __pfx___alloc_skb+0x10/0x10 [ 175.385198][ C1] ? __timer_delete+0xdf/0x380 [ 175.390059][ C1] __ipv6_ifa_notify+0x2e9/0x11f0 [ 175.395130][ C1] ? __pfx___ipv6_ifa_notify+0x10/0x10 [ 175.400688][ C1] ? mark_lock+0x9a/0x360 [ 175.405055][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 175.411138][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 175.417556][ C1] ? __cancel_work+0x24a/0x390 [ 175.422353][ C1] ? lockdep_hardirqs_on+0x99/0x150 [ 175.427639][ C1] ? __cancel_work+0x2ee/0x390 [ 175.432442][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 175.438870][ C1] addrconf_dad_completed+0x181/0xcd0 [ 175.444304][ C1] ? __pfx_addrconf_dad_completed+0x10/0x10 [ 175.450288][ C1] ? addrconf_dad_work+0x58a/0x16f0 [ 175.455525][ C1] addrconf_dad_work+0xdc2/0x16f0 [ 175.460649][ C1] ? __pfx_addrconf_dad_work+0x10/0x10 [ 175.466186][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 175.472562][ C1] ? process_scheduled_works+0x945/0x1830 [ 175.478361][ C1] process_scheduled_works+0xa2c/0x1830 [ 175.483967][ C1] ? __pfx_process_scheduled_works+0x10/0x10 [ 175.490038][ C1] ? assign_work+0x364/0x3d0 [ 175.494667][ C1] worker_thread+0x86d/0xd50 [ 175.499364][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 175.505292][ C1] ? __kthread_parkme+0x169/0x1d0 [ 175.510409][ C1] ? __pfx_worker_thread+0x10/0x10 [ 175.515550][ C1] kthread+0x2f0/0x390 [ 175.519702][ C1] ? __pfx_worker_thread+0x10/0x10 [ 175.524841][ C1] ? __pfx_kthread+0x10/0x10 [ 175.529518][ C1] ret_from_fork+0x4b/0x80 [ 175.533968][ C1] ? __pfx_kthread+0x10/0x10 [ 175.538634][ C1] ret_from_fork_asm+0x1a/0x30 [ 175.543444][ C1] [ 175.546534][ C1] [ 175.546534][ C1] Showing all locks held in the system: [ 175.554259][ C1] 3 locks held by kworker/0:1/9: [ 175.559283][ C1] 2 locks held by kworker/1:0/25: [ 175.564324][ C1] 2 locks held by kworker/u8:2/35: [ 175.569533][ C1] 3 locks held by kworker/u8:7/2826: [ 175.574841][ C1] 2 locks held by getty/4846: [ 175.579580][ C1] #0: ffff88802a7a90a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 175.589453][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 [ 175.599691][ C1] 1 lock held by syz-executor.0/5395: [ 175.605081][ C1] 2 locks held by syz-executor.3/5426: [ 175.610698][ C1] #0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x9a7/0xf80 [ 175.620650][ C1] #1: ffff88807db3c0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 [ 175.630886][ C1] 1 lock held by syz-executor.4/5435: [ 175.636320][ C1] #0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region+0x62/0xa0 [ 175.647313][ C1] 1 lock held by syz-executor.2/5441: [ 175.652699][ C1] #0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 [ 175.663697][ C1] 3 locks held by syz-executor.2/5446: [ 175.669225][ C1] #0: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 [ 175.679439][ C1] #1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0 [ 175.689305][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 175.699340][ C1] 5 locks held by syz-executor.1/5448: [ 175.704819][ C1] [ 175.707220][ C1] ============================================= [ 175.707220][ C1] [ 176.775991][ C1] DEBUG: holding rtnl_mutex for 9917 jiffies. [ 176.782229][ C1] task:kworker/u8:7 state:R running task stack:23600 pid:2826 tgid:2826 ppid:2 flags:0x00004000 [ 176.794251][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 176.800468][ C1] Call Trace: [ 176.803813][ C1] [ 176.806948][ C1] __schedule+0x17e8/0x4a20 [ 176.811554][ C1] ? mark_lock+0x9a/0x360 [ 176.816065][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 176.822134][ C1] ? ret_from_fork+0x4b/0x80 [ 176.826955][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 176.833419][ C1] ? arch_stack_walk+0x174/0x1b0 [ 176.838539][ C1] ? __pfx___schedule+0x10/0x10 [ 176.843554][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 176.849736][ C1] ? preempt_schedule_irq+0xf0/0x1c0 [ 176.855145][ C1] preempt_schedule_irq+0xfb/0x1c0 [ 176.860451][ C1] ? __pfx_preempt_schedule_irq+0x10/0x10 [ 176.866367][ C1] irqentry_exit+0x5e/0x90 [ 176.870928][ C1] asm_sysvec_reschedule_ipi+0x1a/0x20 [ 176.876608][ C1] RIP: 0010:save_stack+0x185/0x1f0 [ 176.881864][ C1] Code: 44 2c 14 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 e0 00 00 00 75 6a 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 cc cc cc cc 89 d9 80 e1 07 fe c1 38 c1 0f 8c 14 ff ff ff 48 [ 176.901724][ C1] RSP: 0018:ffffc90009a17050 EFLAGS: 00000246 [ 176.908044][ C1] RAX: 00000000040a0252 RBX: 0000000000000000 RCX: ffff88802b5fda00 [ 176.916199][ C1] RDX: 0000000000000000 RSI: 00000000040a0252 RDI: 0000000000000000 [ 176.924285][ C1] RBP: ffffc90009a17050 R08: ffffffff82038425 R09: 0000000000000010 [ 176.932464][ C1] R10: 0000000000000003 R11: ffffffff817ef6f0 R12: 0000000000152820 [ 176.940672][ C1] R13: 0000000000000001 R14: ffffea0000b4e780 R15: dffffc0000000000 [ 176.948823][ C1] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 176.955126][ C1] ? save_stack+0x115/0x1f0 [ 176.959798][ C1] __set_page_owner+0x92/0x800 [ 176.964700][ C1] ? __pfx_seqcount_lockdep_reader_access+0x10/0x10 [ 176.971519][ C1] ? get_page_from_freelist+0x7d7/0x2d70 [ 176.977357][ C1] ? __pfx_lock_release+0x10/0x10 [ 176.982497][ C1] ? __pfx___set_page_owner+0x10/0x10 [ 176.988104][ C1] post_alloc_hook+0x1f3/0x230 [ 176.993003][ C1] get_page_from_freelist+0x2cbd/0x2d70 [ 176.998836][ C1] ? mark_lock+0x9a/0x360 [ 177.003330][ C1] __alloc_pages_noprof+0x256/0x6c0 [ 177.008808][ C1] ? __pfx___alloc_pages_noprof+0x10/0x10 [ 177.014708][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 177.020956][ C1] alloc_slab_page+0x5f/0x120 [ 177.025745][ C1] allocate_slab+0x5a/0x2f0 [ 177.030413][ C1] ___slab_alloc+0xcd1/0x14b0 [ 177.035185][ C1] ? __alloc_skb+0x1c3/0x440 [ 177.040005][ C1] ? __alloc_skb+0x1c3/0x440 [ 177.044730][ C1] __slab_alloc+0x58/0xa0 [ 177.049256][ C1] ? __alloc_skb+0x1c3/0x440 [ 177.053984][ C1] kmem_cache_alloc_node_noprof+0x1fe/0x320 [ 177.060110][ C1] __alloc_skb+0x1c3/0x440 [ 177.064665][ C1] ? __pfx___alloc_skb+0x10/0x10 [ 177.069939][ C1] ? __timer_delete+0xdf/0x380 [ 177.074913][ C1] __ipv6_ifa_notify+0x2e9/0x11f0 [ 177.080186][ C1] ? __pfx___ipv6_ifa_notify+0x10/0x10 [ 177.085781][ C1] ? mark_lock+0x9a/0x360 [ 177.090358][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 177.096564][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 177.103044][ C1] ? __cancel_work+0x24a/0x390 [ 177.108014][ C1] ? lockdep_hardirqs_on+0x99/0x150 [ 177.113353][ C1] ? __cancel_work+0x2ee/0x390 [ 177.118350][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 177.124792][ C1] addrconf_dad_completed+0x181/0xcd0 [ 177.130406][ C1] ? __pfx_addrconf_dad_completed+0x10/0x10 [ 177.136528][ C1] ? addrconf_dad_work+0x58a/0x16f0 [ 177.141849][ C1] addrconf_dad_work+0xdc2/0x16f0 [ 177.147123][ C1] ? __pfx_addrconf_dad_work+0x10/0x10 [ 177.152732][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 177.159295][ C1] ? process_scheduled_works+0x945/0x1830 [ 177.165129][ C1] process_scheduled_works+0xa2c/0x1830 [ 177.170954][ C1] ? __pfx_process_scheduled_works+0x10/0x10 [ 177.177134][ C1] ? assign_work+0x364/0x3d0 [ 177.181862][ C1] worker_thread+0x86d/0xd50 [ 177.186731][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 177.192805][ C1] ? __kthread_parkme+0x169/0x1d0 [ 177.198038][ C1] ? __pfx_worker_thread+0x10/0x10 [ 177.203330][ C1] kthread+0x2f0/0x390 [ 177.207631][ C1] ? __pfx_worker_thread+0x10/0x10 [ 177.212854][ C1] ? __pfx_kthread+0x10/0x10 [ 177.217637][ C1] ret_from_fork+0x4b/0x80 [ 177.222195][ C1] ? __pfx_kthread+0x10/0x10 [ 177.227004][ C1] ret_from_fork_asm+0x1a/0x30 [ 177.231927][ C1] [ 177.235039][ C1] [ 177.235039][ C1] Showing all locks held in the system: [ 177.242915][ C1] 3 locks held by kworker/0:1/9: [ 177.248020][ C1] 2 locks held by kworker/1:0/25: [ 177.253108][ C1] 2 locks held by kworker/u8:2/35: [ 177.258453][ C1] 3 locks held by kworker/u8:7/2826: [ 177.263830][ C1] 2 locks held by getty/4846: [ 177.268709][ C1] #0: ffff88802a7a90a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 177.278768][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 [ 177.289137][ C1] 1 lock held by syz-executor.0/5395: [ 177.294633][ C1] 2 locks held by syz-executor.3/5426: [ 177.300256][ C1] #0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x9a7/0xf80 [ 177.310387][ C1] #1: ffff88807db3c0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 [ 177.320803][ C1] 1 lock held by syz-executor.4/5435: [ 177.326369][ C1] #0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region+0x62/0xa0 [ 177.337467][ C1] 1 lock held by syz-executor.2/5441: [ 177.342901][ C1] #0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 [ 177.354099][ C1] 3 locks held by syz-executor.2/5447: [ 177.359783][ C1] #0: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 [ 177.370180][ C1] #1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0 [ 177.380228][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 177.390363][ C1] 5 locks held by syz-executor.1/5448: [ 177.395998][ C1] [ 177.398372][ C1] ============================================= [ 177.398372][ C1] [ 178.455999][ C1] DEBUG: holding rtnl_mutex for 10085 jiffies. [ 178.462280][ C1] task:kworker/u8:7 state:R running task stack:23600 pid:2826 tgid:2826 ppid:2 flags:0x00004000 [ 178.474185][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 178.480302][ C1] Call Trace: [ 178.483598][ C1] [ 178.486604][ C1] __schedule+0x17e8/0x4a20 [ 178.491144][ C1] ? mark_lock+0x9a/0x360 [ 178.495508][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 178.501570][ C1] ? ret_from_fork+0x4b/0x80 [ 178.506240][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 178.512594][ C1] ? arch_stack_walk+0x174/0x1b0 [ 178.517609][ C1] ? __pfx___schedule+0x10/0x10 [ 178.522496][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 178.528563][ C1] ? preempt_schedule_irq+0xf0/0x1c0 [ 178.533880][ C1] preempt_schedule_irq+0xfb/0x1c0 [ 178.539076][ C1] ? __pfx_preempt_schedule_irq+0x10/0x10 [ 178.544835][ C1] irqentry_exit+0x5e/0x90 [ 178.549363][ C1] asm_sysvec_reschedule_ipi+0x1a/0x20 [ 178.554864][ C1] RIP: 0010:save_stack+0x185/0x1f0 [ 178.560083][ C1] Code: 44 2c 14 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 e0 00 00 00 75 6a 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 cc cc cc cc 89 d9 80 e1 07 fe c1 38 c1 0f 8c 14 ff ff ff 48 [ 178.579787][ C1] RSP: 0018:ffffc90009a17050 EFLAGS: 00000246 [ 178.585938][ C1] RAX: 00000000040a0252 RBX: 0000000000000000 RCX: ffff88802b5fda00 [ 178.593939][ C1] RDX: 0000000000000000 RSI: 00000000040a0252 RDI: 0000000000000000 [ 178.602000][ C1] RBP: ffffc90009a17050 R08: ffffffff82038425 R09: 0000000000000010 [ 178.610050][ C1] R10: 0000000000000003 R11: ffffffff817ef6f0 R12: 0000000000152820 [ 178.618099][ C1] R13: 0000000000000001 R14: ffffea0000b4e780 R15: dffffc0000000000 [ 178.626147][ C1] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 178.632335][ C1] ? save_stack+0x115/0x1f0 [ 178.636928][ C1] __set_page_owner+0x92/0x800 [ 178.641722][ C1] ? __pfx_seqcount_lockdep_reader_access+0x10/0x10 [ 178.648388][ C1] ? get_page_from_freelist+0x7d7/0x2d70 [ 178.654057][ C1] ? __pfx_lock_release+0x10/0x10 [ 178.659343][ C1] ? __pfx___set_page_owner+0x10/0x10 [ 178.664753][ C1] post_alloc_hook+0x1f3/0x230 [ 178.669599][ C1] get_page_from_freelist+0x2cbd/0x2d70 [ 178.675205][ C1] ? mark_lock+0x9a/0x360 [ 178.679654][ C1] __alloc_pages_noprof+0x256/0x6c0 [ 178.684885][ C1] ? __pfx___alloc_pages_noprof+0x10/0x10 [ 178.690696][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 178.696758][ C1] alloc_slab_page+0x5f/0x120 [ 178.701462][ C1] allocate_slab+0x5a/0x2f0 [ 178.706050][ C1] ___slab_alloc+0xcd1/0x14b0 [ 178.710758][ C1] ? __alloc_skb+0x1c3/0x440 [ 178.715388][ C1] ? __alloc_skb+0x1c3/0x440 [ 178.720063][ C1] __slab_alloc+0x58/0xa0 [ 178.724425][ C1] ? __alloc_skb+0x1c3/0x440 [ 178.729106][ C1] kmem_cache_alloc_node_noprof+0x1fe/0x320 [ 178.735039][ C1] __alloc_skb+0x1c3/0x440 [ 178.739536][ C1] ? __pfx___alloc_skb+0x10/0x10 [ 178.744497][ C1] ? __timer_delete+0xdf/0x380 [ 178.749345][ C1] __ipv6_ifa_notify+0x2e9/0x11f0 [ 178.754400][ C1] ? __pfx___ipv6_ifa_notify+0x10/0x10 [ 178.759950][ C1] ? mark_lock+0x9a/0x360 [ 178.764313][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 178.770371][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 178.776786][ C1] ? __cancel_work+0x24a/0x390 [ 178.781592][ C1] ? lockdep_hardirqs_on+0x99/0x150 [ 178.786897][ C1] ? __cancel_work+0x2ee/0x390 [ 178.791701][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 178.798115][ C1] addrconf_dad_completed+0x181/0xcd0 [ 178.803524][ C1] ? __pfx_addrconf_dad_completed+0x10/0x10 [ 178.809497][ C1] ? addrconf_dad_work+0x58a/0x16f0 [ 178.814735][ C1] addrconf_dad_work+0xdc2/0x16f0 [ 178.819852][ C1] ? __pfx_addrconf_dad_work+0x10/0x10 [ 178.825339][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 178.831755][ C1] ? process_scheduled_works+0x945/0x1830 [ 178.837550][ C1] process_scheduled_works+0xa2c/0x1830 [ 178.843237][ C1] ? __pfx_process_scheduled_works+0x10/0x10 [ 178.849300][ C1] ? assign_work+0x364/0x3d0 [ 178.853928][ C1] worker_thread+0x86d/0xd50 [ 178.858618][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 178.864546][ C1] ? __kthread_parkme+0x169/0x1d0 [ 178.869663][ C1] ? __pfx_worker_thread+0x10/0x10 [ 178.874814][ C1] kthread+0x2f0/0x390 [ 178.878968][ C1] ? __pfx_worker_thread+0x10/0x10 [ 178.884115][ C1] ? __pfx_kthread+0x10/0x10 [ 178.888783][ C1] ret_from_fork+0x4b/0x80 [ 178.893324][ C1] ? __pfx_kthread+0x10/0x10 [ 178.897992][ C1] ret_from_fork_asm+0x1a/0x30 [ 178.902890][ C1] [ 178.905970][ C1] [ 178.905970][ C1] Showing all locks held in the system: [ 178.913696][ C1] 3 locks held by kworker/0:1/9: [ 178.918706][ C1] 2 locks held by kworker/1:0/25: [ 178.923747][ C1] 2 locks held by kworker/u8:2/35: [ 178.928951][ C1] 3 locks held by kworker/u8:7/2826: [ 178.934258][ C1] 2 locks held by getty/4846: [ 178.938992][ C1] #0: ffff88802a7a90a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 178.948868][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 [ 178.959091][ C1] 1 lock held by syz-executor.0/5395: [ 178.964478][ C1] 2 locks held by syz-executor.3/5426: [ 178.970004][ C1] #0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x9a7/0xf80 [ 178.979963][ C1] #1: ffff88807db3c0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 [ 178.990206][ C1] 1 lock held by syz-executor.4/5435: [ 178.995601][ C1] #0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region+0x62/0xa0 [ 179.006586][ C1] 1 lock held by syz-executor.2/5441: [ 179.011976][ C1] #0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 [ 179.023061][ C1] 3 locks held by syz-executor.2/5446: [ 179.028584][ C1] #0: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 [ 179.038884][ C1] #1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0 [ 179.048742][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 179.058730][ C1] 5 locks held by syz-executor.1/5448: [ 179.064214][ C1] [ 179.066620][ C1] ============================================= [ 179.066620][ C1] [ 180.135985][ C1] DEBUG: holding rtnl_mutex for 10253 jiffies. [ 180.142256][ C1] task:kworker/u8:7 state:R running task stack:23600 pid:2826 tgid:2826 ppid:2 flags:0x00004000 [ 180.154107][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 180.160180][ C1] Call Trace: [ 180.163474][ C1] [ 180.166470][ C1] __schedule+0x17e8/0x4a20 [ 180.171008][ C1] ? mark_lock+0x9a/0x360 [ 180.175368][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 180.181424][ C1] ? ret_from_fork+0x4b/0x80 [ 180.186110][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 180.192476][ C1] ? arch_stack_walk+0x174/0x1b0 [ 180.197505][ C1] ? __pfx___schedule+0x10/0x10 [ 180.202387][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 180.208502][ C1] ? preempt_schedule_irq+0xf0/0x1c0 [ 180.213834][ C1] preempt_schedule_irq+0xfb/0x1c0 [ 180.219044][ C1] ? __pfx_preempt_schedule_irq+0x10/0x10 [ 180.224811][ C1] irqentry_exit+0x5e/0x90 [ 180.229446][ C1] asm_sysvec_reschedule_ipi+0x1a/0x20 [ 180.234933][ C1] RIP: 0010:save_stack+0x185/0x1f0 [ 180.240130][ C1] Code: 44 2c 14 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 e0 00 00 00 75 6a 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 cc cc cc cc 89 d9 80 e1 07 fe c1 38 c1 0f 8c 14 ff ff ff 48 [ 180.259820][ C1] RSP: 0018:ffffc90009a17050 EFLAGS: 00000246 [ 180.265963][ C1] RAX: 00000000040a0252 RBX: 0000000000000000 RCX: ffff88802b5fda00 [ 180.273955][ C1] RDX: 0000000000000000 RSI: 00000000040a0252 RDI: 0000000000000000 [ 180.282005][ C1] RBP: ffffc90009a17050 R08: ffffffff82038425 R09: 0000000000000010 [ 180.290051][ C1] R10: 0000000000000003 R11: ffffffff817ef6f0 R12: 0000000000152820 [ 180.298188][ C1] R13: 0000000000000001 R14: ffffea0000b4e780 R15: dffffc0000000000 [ 180.306254][ C1] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 180.312458][ C1] ? save_stack+0x115/0x1f0 [ 180.317063][ C1] __set_page_owner+0x92/0x800 [ 180.321854][ C1] ? __pfx_seqcount_lockdep_reader_access+0x10/0x10 [ 180.328573][ C1] ? get_page_from_freelist+0x7d7/0x2d70 [ 180.334253][ C1] ? __pfx_lock_release+0x10/0x10 [ 180.339376][ C1] ? __pfx___set_page_owner+0x10/0x10 [ 180.344798][ C1] post_alloc_hook+0x1f3/0x230 [ 180.349660][ C1] get_page_from_freelist+0x2cbd/0x2d70 [ 180.355265][ C1] ? mark_lock+0x9a/0x360 [ 180.359753][ C1] __alloc_pages_noprof+0x256/0x6c0 [ 180.365008][ C1] ? __pfx___alloc_pages_noprof+0x10/0x10 [ 180.370837][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 180.376902][ C1] alloc_slab_page+0x5f/0x120 [ 180.381608][ C1] allocate_slab+0x5a/0x2f0 [ 180.386192][ C1] ___slab_alloc+0xcd1/0x14b0 [ 180.390901][ C1] ? __alloc_skb+0x1c3/0x440 [ 180.395523][ C1] ? __alloc_skb+0x1c3/0x440 [ 180.400190][ C1] __slab_alloc+0x58/0xa0 [ 180.404552][ C1] ? __alloc_skb+0x1c3/0x440 [ 180.409234][ C1] kmem_cache_alloc_node_noprof+0x1fe/0x320 [ 180.415231][ C1] __alloc_skb+0x1c3/0x440 [ 180.419757][ C1] ? __pfx___alloc_skb+0x10/0x10 [ 180.424731][ C1] ? __timer_delete+0xdf/0x380 [ 180.429669][ C1] __ipv6_ifa_notify+0x2e9/0x11f0 [ 180.434739][ C1] ? __pfx___ipv6_ifa_notify+0x10/0x10 [ 180.440272][ C1] ? mark_lock+0x9a/0x360 [ 180.444732][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 180.450799][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 180.457215][ C1] ? __cancel_work+0x24a/0x390 [ 180.462015][ C1] ? lockdep_hardirqs_on+0x99/0x150 [ 180.467294][ C1] ? __cancel_work+0x2ee/0x390 [ 180.472094][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 180.478510][ C1] addrconf_dad_completed+0x181/0xcd0 [ 180.483923][ C1] ? __pfx_addrconf_dad_completed+0x10/0x10 [ 180.489904][ C1] ? addrconf_dad_work+0x58a/0x16f0 [ 180.495136][ C1] addrconf_dad_work+0xdc2/0x16f0 [ 180.500262][ C1] ? __pfx_addrconf_dad_work+0x10/0x10 [ 180.505757][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 180.512184][ C1] ? process_scheduled_works+0x945/0x1830 [ 180.518006][ C1] process_scheduled_works+0xa2c/0x1830 [ 180.523623][ C1] ? __pfx_process_scheduled_works+0x10/0x10 [ 180.529707][ C1] ? assign_work+0x364/0x3d0 [ 180.534349][ C1] worker_thread+0x86d/0xd50 [ 180.539064][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 180.545008][ C1] ? __kthread_parkme+0x169/0x1d0 [ 180.550124][ C1] ? __pfx_worker_thread+0x10/0x10 [ 180.555268][ C1] kthread+0x2f0/0x390 [ 180.559428][ C1] ? __pfx_worker_thread+0x10/0x10 [ 180.564563][ C1] ? __pfx_kthread+0x10/0x10 [ 180.569235][ C1] ret_from_fork+0x4b/0x80 [ 180.573687][ C1] ? __pfx_kthread+0x10/0x10 [ 180.578360][ C1] ret_from_fork_asm+0x1a/0x30 [ 180.583193][ C1] [ 180.586301][ C1] [ 180.586301][ C1] Showing all locks held in the system: [ 180.594037][ C1] 3 locks held by kworker/0:1/9: [ 180.599065][ C1] 2 locks held by kworker/1:0/25: [ 180.604112][ C1] 2 locks held by kworker/u8:2/35: [ 180.609325][ C1] 3 locks held by kworker/u8:7/2826: [ 180.614642][ C1] 2 locks held by getty/4846: [ 180.619410][ C1] #0: ffff88802a7a90a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 180.629294][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 [ 180.639528][ C1] 1 lock held by syz-executor.0/5395: [ 180.644923][ C1] 2 locks held by syz-executor.3/5426: [ 180.650451][ C1] #0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x9a7/0xf80 [ 180.660420][ C1] #1: ffff88807db3c0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 [ 180.670652][ C1] 1 lock held by syz-executor.4/5435: [ 180.676133][ C1] #0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region+0x62/0xa0 [ 180.687119][ C1] 1 lock held by syz-executor.2/5441: [ 180.692504][ C1] #0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 [ 180.703504][ C1] 3 locks held by syz-executor.2/5446: [ 180.709027][ C1] #0: ffffc90000a18ca0 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 [ 180.719251][ C1] #1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0 [ 180.729156][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 180.739123][ C1] 5 locks held by syz-executor.1/5448: [ 180.744599][ C1] [ 180.746981][ C1] ============================================= [ 180.746981][ C1] [ 181.816006][ C1] DEBUG: holding rtnl_mutex for 10421 jiffies. [ 181.822293][ C1] task:kworker/u8:7 state:R running task stack:23600 pid:2826 tgid:2826 ppid:2 flags:0x00004000 [ 181.834259][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 181.840398][ C1] Call Trace: [ 181.843749][ C1] [ 181.846794][ C1] __schedule+0x17e8/0x4a20 [ 181.851412][ C1] ? mark_lock+0x9a/0x360 [ 181.855828][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 181.861991][ C1] ? ret_from_fork+0x4b/0x80 [ 181.866764][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 181.873166][ C1] ? arch_stack_walk+0x174/0x1b0 [ 181.878241][ C1] ? __pfx___schedule+0x10/0x10 [ 181.883214][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 181.889343][ C1] ? preempt_schedule_irq+0xf0/0x1c0 [ 181.894697][ C1] preempt_schedule_irq+0xfb/0x1c0 [ 181.899946][ C1] ? __pfx_preempt_schedule_irq+0x10/0x10 [ 181.905742][ C1] irqentry_exit+0x5e/0x90 [ 181.910294][ C1] asm_sysvec_reschedule_ipi+0x1a/0x20 [ 181.915862][ C1] RIP: 0010:save_stack+0x185/0x1f0 [ 181.921077][ C1] Code: 44 2c 14 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 e0 00 00 00 75 6a 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 cc cc cc cc 89 d9 80 e1 07 fe c1 38 c1 0f 8c 14 ff ff ff 48 [ 181.940853][ C1] RSP: 0018:ffffc90009a17050 EFLAGS: 00000246 [ 181.947063][ C1] RAX: 00000000040a0252 RBX: 0000000000000000 RCX: ffff88802b5fda00 [ 181.955105][ C1] RDX: 0000000000000000 RSI: 00000000040a0252 RDI: 0000000000000000 [ 181.963240][ C1] RBP: ffffc90009a17050 R08: ffffffff82038425 R09: 0000000000000010 [ 181.971342][ C1] R10: 0000000000000003 R11: ffffffff817ef6f0 R12: 0000000000152820 [ 181.979471][ C1] R13: 0000000000000001 R14: ffffea0000b4e780 R15: dffffc0000000000 [ 181.987587][ C1] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 181.993836][ C1] ? save_stack+0x115/0x1f0 [ 181.998545][ C1] __set_page_owner+0x92/0x800 [ 182.003412][ C1] ? __pfx_seqcount_lockdep_reader_access+0x10/0x10 [ 182.010225][ C1] ? get_page_from_freelist+0x7d7/0x2d70 [ 182.015981][ C1] ? __pfx_lock_release+0x10/0x10 [ 182.021070][ C1] ? __pfx___set_page_owner+0x10/0x10 [ 182.026595][ C1] post_alloc_hook+0x1f3/0x230 [ 182.031486][ C1] get_page_from_freelist+0x2cbd/0x2d70 [ 182.037202][ C1] ? mark_lock+0x9a/0x360 [ 182.041621][ C1] __alloc_pages_noprof+0x256/0x6c0 [ 182.046950][ C1] ? __pfx___alloc_pages_noprof+0x10/0x10 [ 182.052773][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 182.058907][ C1] alloc_slab_page+0x5f/0x120 [ 182.063640][ C1] allocate_slab+0x5a/0x2f0 [ 182.068268][ C1] ___slab_alloc+0xcd1/0x14b0 [ 182.073040][ C1] ? __alloc_skb+0x1c3/0x440 [ 182.077762][ C1] ? __alloc_skb+0x1c3/0x440 [ 182.082433][ C1] __slab_alloc+0x58/0xa0 [ 182.086895][ C1] ? __alloc_skb+0x1c3/0x440 [ 182.091578][ C1] kmem_cache_alloc_node_noprof+0x1fe/0x320 [ 182.097676][ C1] __alloc_skb+0x1c3/0x440 [ 182.102176][ C1] ? __pfx___alloc_skb+0x10/0x10 [ 182.107294][ C1] ? __timer_delete+0xdf/0x380 [ 182.112135][ C1] __ipv6_ifa_notify+0x2e9/0x11f0 [ 182.117295][ C1] ? __pfx___ipv6_ifa_notify+0x10/0x10 [ 182.122811][ C1] ? mark_lock+0x9a/0x360 [ 182.127305][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 182.133376][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 182.139814][ C1] ? __cancel_work+0x24a/0x390 [ 182.144663][ C1] ? lockdep_hardirqs_on+0x99/0x150 [ 182.149970][ C1] ? __cancel_work+0x2ee/0x390 [ 182.154841][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 182.161293][ C1] addrconf_dad_completed+0x181/0xcd0 [ 182.166803][ C1] ? __pfx_addrconf_dad_completed+0x10/0x10 [ 182.172792][ C1] ? addrconf_dad_work+0x58a/0x16f0 [ 182.178100][ C1] addrconf_dad_work+0xdc2/0x16f0 [ 182.183250][ C1] ? __pfx_addrconf_dad_work+0x10/0x10 [ 182.188903][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 182.195393][ C1] ? process_scheduled_works+0x945/0x1830 [ 182.201264][ C1] process_scheduled_works+0xa2c/0x1830 [ 182.207010][ C1] ? __pfx_process_scheduled_works+0x10/0x10 [ 182.213088][ C1] ? assign_work+0x364/0x3d0 [ 182.217819][ C1] worker_thread+0x86d/0xd50 [ 182.222513][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 182.228558][ C1] ? __kthread_parkme+0x169/0x1d0 [ 182.233649][ C1] ? __pfx_worker_thread+0x10/0x10 [ 182.238895][ C1] kthread+0x2f0/0x390 [ 182.243020][ C1] ? __pfx_worker_thread+0x10/0x10 [ 182.248289][ C1] ? __pfx_kthread+0x10/0x10 [ 182.252954][ C1] ret_from_fork+0x4b/0x80 [ 182.257510][ C1] ? __pfx_kthread+0x10/0x10 [ 182.262160][ C1] ret_from_fork_asm+0x1a/0x30 [ 182.267072][ C1] [ 182.270198][ C1] [ 182.270198][ C1] Showing all locks held in the system: [ 182.278099][ C1] 3 locks held by kworker/0:1/9: [ 182.283127][ C1] 2 locks held by kworker/1:0/25: [ 182.288285][ C1] 3 locks held by kworker/1:0H/26: [ 182.293449][ C1] #0: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 [ 182.303802][ C1] #1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0 [ 182.313822][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 182.323865][ C1] 2 locks held by kworker/u8:2/35: [ 182.329131][ C1] 3 locks held by kworker/u8:7/2826: [ 182.334583][ C1] 2 locks held by getty/4846: [ 182.339388][ C1] #0: ffff88802a7a90a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 182.349382][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 [ 182.359719][ C1] 1 lock held by syz-executor.0/5395: [ 182.365177][ C1] 2 locks held by syz-executor.3/5426: [ 182.370771][ C1] #0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x9a7/0xf80 [ 182.380853][ C1] #1: ffff88807db3c0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 [ 182.391280][ C1] 1 lock held by syz-executor.4/5435: [ 182.396800][ C1] #0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region+0x62/0xa0 [ 182.407873][ C1] 1 lock held by syz-executor.2/5441: [ 182.413367][ C1] #0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 [ 182.424448][ C1] 5 locks held by syz-executor.1/5448: [ 182.430027][ C1] [ 182.432402][ C1] ============================================= [ 182.432402][ C1] [ 182.615947][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 182.615969][ C1] rcu: (detected by 1, t=10502 jiffies, g=8477, q=526 ncpus=2) [ 182.615989][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294955336-4294944834), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 182.616017][ C1] rcu: rcu_preempt kthread starved for 10502 jiffies! g8477 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 182.616039][ C1] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 182.616049][ C1] rcu: RCU grace-period kthread stack dump: [ 182.616055][ C1] task:rcu_preempt state:R running task stack:24912 pid:17 tgid:17 ppid:2 flags:0x00004000 [ 182.616096][ C1] Call Trace: [ 182.616103][ C1] [ 182.616115][ C1] __schedule+0x17e8/0x4a20 [ 182.616161][ C1] ? __pfx___schedule+0x10/0x10 [ 182.616186][ C1] ? __pfx_lock_release+0x10/0x10 [ 182.616206][ C1] ? __asan_memset+0x23/0x50 [ 182.616235][ C1] ? __pfx_lockdep_init_map_type+0x10/0x10 [ 182.616273][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 182.616297][ C1] ? schedule+0x90/0x320 [ 182.616316][ C1] schedule+0x14b/0x320 [ 182.616339][ C1] schedule_timeout+0x1be/0x310 [ 182.616359][ C1] ? __pfx_schedule_timeout+0x10/0x10 [ 182.616377][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 182.616399][ C1] ? __pfx_process_timeout+0x10/0x10 [ 182.616428][ C1] ? prepare_to_swait_event+0x32e/0x350 [ 182.616454][ C1] rcu_gp_fqs_loop+0x2df/0x1330 [ 182.616478][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 182.616503][ C1] ? irqentry_exit+0x63/0x90 [ 182.616526][ C1] ? lockdep_hardirqs_on+0x99/0x150 [ 182.616553][ C1] ? __pfx_rcu_gp_fqs_loop+0x10/0x10 [ 182.616586][ C1] rcu_gp_kthread+0xa7/0x3b0 [ 182.616611][ C1] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 182.616630][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 182.616655][ C1] ? __kthread_parkme+0x169/0x1d0 [ 182.616680][ C1] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 182.616701][ C1] kthread+0x2f0/0x390 [ 182.616723][ C1] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 182.616744][ C1] ? __pfx_kthread+0x10/0x10 [ 182.616766][ C1] ret_from_fork+0x4b/0x80 [ 182.616788][ C1] ? __pfx_kthread+0x10/0x10 [ 182.616810][ C1] ret_from_fork_asm+0x1a/0x30 [ 182.616846][ C1] [ 182.616853][ C1] rcu: Stack dump where RCU GP kthread last ran: [ 182.616879][ C1] CPU: 1 PID: 5447 Comm: syz-executor.2 Not tainted 6.10.0-rc3-next-20240611-syzkaller #0 [ 182.616899][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 182.616910][ C1] RIP: 0010:finish_task_switch+0x1ea/0x870 [ 182.616937][ C1] Code: c9 50 e8 69 b6 0b 00 48 83 c4 08 4c 89 f7 e8 7d 38 00 00 0f 1f 44 00 00 4c 89 f7 e8 40 ff 31 0a e8 0b 30 37 00 fb 48 8b 5d c0 <48> 8d bb f8 15 00 00 48 89 f8 48 c1 e8 03 49 be 00 00 00 00 00 fc [ 182.616953][ C1] RSP: 0018:ffffc90009327628 EFLAGS: 00000282 [ 182.616968][ C1] RAX: 4fae675c8c058300 RBX: ffff8880232c1e00 RCX: ffffffff947c3803 [ 182.616981][ C1] RDX: dffffc0000000000 RSI: ffffffff8bcac1a0 RDI: ffffffff8c200760 [ 182.616994][ C1] RBP: ffffc90009327670 R08: ffffffff8fae04af R09: 1ffffffff1f5c095 [ 182.617007][ C1] R10: dffffc0000000000 R11: fffffbfff1f5c096 R12: 1ffff110172a7ec7 [ 182.617021][ C1] R13: dffffc0000000000 R14: ffff8880b953e8c0 R15: ffff8880b953f638 [ 182.617035][ C1] FS: 00007fa3785bd6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 [ 182.617051][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 182.617064][ C1] CR2: 00007fa3785ddf00 CR3: 0000000067854000 CR4: 00000000003526f0 [ 182.617080][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 182.617092][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 182.617104][ C1] Call Trace: [ 182.617110][ C1] [ 182.617118][ C1] ? rcu_check_gp_kthread_starvation+0x278/0x310 [ 182.617146][ C1] ? print_other_cpu_stall+0x147a/0x15b0 [ 182.617181][ C1] ? __pfx_print_other_cpu_stall+0x10/0x10 [ 182.617203][ C1] ? __pfx_bpf_trace_run1+0x10/0x10 [ 182.617228][ C1] ? trace_rcu_utilization+0x113/0x1e0 [ 182.617261][ C1] ? kvm_check_and_clear_guest_paused+0x6a/0xd0 [ 182.617285][ C1] ? rcu_sched_clock_irq+0xa2c/0x10d0 [ 182.617315][ C1] ? __pfx_rcu_sched_clock_irq+0x10/0x10 [ 182.617340][ C1] ? hrtimer_run_queues+0x16c/0x460 [ 182.617359][ C1] ? acct_account_cputime+0xd3/0x210 [ 182.617384][ C1] ? update_process_times+0x1ce/0x230 [ 182.617408][ C1] ? tick_nohz_handler+0x37c/0x500 [ 182.617431][ C1] ? __pfx_tick_nohz_handler+0x10/0x10 [ 182.617452][ C1] ? __hrtimer_run_queues+0x551/0xd50 [ 182.617470][ C1] ? ktime_get_update_offsets_now+0x3c/0x250 [ 182.617507][ C1] ? __pfx___hrtimer_run_queues+0x10/0x10 [ 182.617527][ C1] ? ktime_get_update_offsets_now+0x22d/0x250 [ 182.617555][ C1] ? hrtimer_interrupt+0x396/0x990 [ 182.617594][ C1] ? __sysvec_apic_timer_interrupt+0x110/0x3f0 [ 182.617620][ C1] ? sysvec_apic_timer_interrupt+0xa1/0xc0 [ 182.617642][ C1] [ 182.617649][ C1] [ 182.617656][ C1] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 182.617687][ C1] ? finish_task_switch+0x1ea/0x870 [ 182.617711][ C1] ? finish_task_switch+0x1e5/0x870 [ 182.617739][ C1] __schedule+0x17f0/0x4a20 [ 182.617768][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 182.617792][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 182.617816][ C1] ? __pfx___schedule+0x10/0x10 [ 182.617840][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 182.617869][ C1] ? preempt_schedule_irq+0xf0/0x1c0 [ 182.617893][ C1] preempt_schedule_irq+0xfb/0x1c0 [ 182.617914][ C1] ? __pfx_preempt_schedule_irq+0x10/0x10 [ 182.617934][ C1] ? preempt_schedule_notrace_thunk+0x1a/0x30 [ 182.617954][ C1] ? trace_irq_disable+0x2c/0x120 [ 182.617984][ C1] irqentry_exit+0x5e/0x90 [ 182.618006][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 182.618026][ C1] RIP: 0010:schedule+0x13f/0x320 [ 182.618046][ C1] Code: e5 fa f8 48 c7 c7 60 22 1f 8e 4c 89 f6 e8 c9 74 db f5 48 89 eb 48 c1 eb 03 eb 0a 48 f7 45 00 08 00 00 00 74 2c bf 01 00 00 00 3c 82 ce f5 31 ff e8 85 b4 ff ff bf 01 00 00 00 e8 cb 83 ce f5 [ 182.618060][ C1] RSP: 0018:ffffc90009327a00 EFLAGS: 00000202 [ 182.618076][ C1] RAX: 0000000000000001 RBX: 1ffff110046583c0 RCX: 0000000000000001 [ 182.618088][ C1] RDX: dffffc0000000000 RSI: ffffffff8bcac1a0 RDI: 0000000000000001 [ 182.618101][ C1] RBP: ffff8880232c1e00 R08: ffffffff8fae04af R09: 1ffffffff1f5c095 [ 182.618115][ C1] R10: dffffc0000000000 R11: fffffbfff1f5c096 R12: dffffc0000000000 [ 182.618129][ C1] R13: ffffc90009327af8 R14: ffffffff8b93edc0 R15: ffff8880232c3078 [ 182.618144][ C1] ? schedule+0x90/0x320 [ 182.618177][ C1] ? futex_wait_queue+0x27/0x1d0 [ 182.618200][ C1] futex_wait_queue+0x14e/0x1d0 [ 182.618226][ C1] __futex_wait+0x17f/0x320 [ 182.618259][ C1] ? __pfx___futex_wait+0x10/0x10 [ 182.618286][ C1] ? __pfx_futex_wake_mark+0x10/0x10 [ 182.618325][ C1] futex_wait+0x101/0x360 [ 182.618350][ C1] ? __pfx_futex_wait+0x10/0x10 [ 182.618379][ C1] ? __pfx___might_resched+0x10/0x10 [ 182.618399][ C1] ? __might_fault+0xaa/0x120 [ 182.618421][ C1] ? __pfx_lock_release+0x10/0x10 [ 182.618439][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 182.618463][ C1] do_futex+0x33b/0x560 [ 182.618488][ C1] ? __pfx_do_futex+0x10/0x10 [ 182.618505][ C1] ? rcu_is_watching+0x15/0xb0 [ 182.618527][ C1] ? __rseq_handle_notify_resume+0x353/0x14e0 [ 182.618556][ C1] __se_sys_futex+0x3f9/0x480 [ 182.618583][ C1] ? __pfx___se_sys_futex+0x10/0x10 [ 182.618604][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 182.618626][ C1] ? do_syscall_64+0x100/0x230 [ 182.618645][ C1] ? __x64_sys_futex+0x21/0xf0 [ 182.618668][ C1] do_syscall_64+0xf3/0x230 [ 182.618686][ C1] ? clear_bhb_loop+0x35/0x90 [ 182.618707][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 182.618726][ C1] RIP: 0033:0x7fa378a7cea9 [ 182.618748][ C1] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 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 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 [ 182.618762][ C1] RSP: 002b:00007fa3785bd178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 182.618779][ C1] RAX: ffffffffffffffda RBX: 00007fa378bb4128 RCX: 00007fa378a7cea9 [ 182.618793][ C1] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fa378bb4128 [ 182.618804][ C1] RBP: 00007fa378bb4120 R08: 00007fa3785bd6c0 R09: 00007fa3785bd6c0 [ 182.618817][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa378bb412c [ 182.618830][ C1] R13: 000000000000006e R14: 00007ffddc50e340 R15: 00007ffddc50e428 [ 182.618857][ C1] [ 183.495979][ C1] DEBUG: holding rtnl_mutex for 10589 jiffies. [ 183.502297][ C1] task:kworker/u8:7 state:R running task stack:23600 pid:2826 tgid:2826 ppid:2 flags:0x00004000 [ 183.514280][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 183.520492][ C1] Call Trace: [ 183.523829][ C1] [ 183.526905][ C1] __schedule+0x17e8/0x4a20 [ 183.531575][ C1] ? mark_lock+0x9a/0x360 [ 183.536028][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 183.542140][ C1] ? ret_from_fork+0x4b/0x80 [ 183.547005][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 183.553581][ C1] ? arch_stack_walk+0x174/0x1b0 [ 183.558699][ C1] ? __pfx___schedule+0x10/0x10 [ 183.563651][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 183.569898][ C1] ? preempt_schedule_irq+0xf0/0x1c0 [ 183.575378][ C1] preempt_schedule_irq+0xfb/0x1c0 [ 183.580771][ C1] ? __pfx_preempt_schedule_irq+0x10/0x10 [ 183.586719][ C1] irqentry_exit+0x5e/0x90 [ 183.591244][ C1] asm_sysvec_reschedule_ipi+0x1a/0x20 [ 183.596898][ C1] RIP: 0010:save_stack+0x185/0x1f0 [ 183.602229][ C1] Code: 44 2c 14 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 e0 00 00 00 75 6a 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 cc cc cc cc 89 d9 80 e1 07 fe c1 38 c1 0f 8c 14 ff ff ff 48 [ 183.622075][ C1] RSP: 0018:ffffc90009a17050 EFLAGS: 00000246 [ 183.628453][ C1] RAX: 00000000040a0252 RBX: 0000000000000000 RCX: ffff88802b5fda00 [ 183.636601][ C1] RDX: 0000000000000000 RSI: 00000000040a0252 RDI: 0000000000000000 [ 183.644710][ C1] RBP: ffffc90009a17050 R08: ffffffff82038425 R09: 0000000000000010 [ 183.652910][ C1] R10: 0000000000000003 R11: ffffffff817ef6f0 R12: 0000000000152820 [ 183.661083][ C1] R13: 0000000000000001 R14: ffffea0000b4e780 R15: dffffc0000000000 [ 183.669286][ C1] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 183.675626][ C1] ? save_stack+0x115/0x1f0 [ 183.680350][ C1] __set_page_owner+0x92/0x800 [ 183.685269][ C1] ? __pfx_seqcount_lockdep_reader_access+0x10/0x10 [ 183.692073][ C1] ? get_page_from_freelist+0x7d7/0x2d70 [ 183.697954][ C1] ? __pfx_lock_release+0x10/0x10 [ 183.703084][ C1] ? __pfx___set_page_owner+0x10/0x10 [ 183.708661][ C1] post_alloc_hook+0x1f3/0x230 [ 183.713534][ C1] get_page_from_freelist+0x2cbd/0x2d70 [ 183.719335][ C1] ? mark_lock+0x9a/0x360 [ 183.723858][ C1] __alloc_pages_noprof+0x256/0x6c0 [ 183.729226][ C1] ? __pfx___alloc_pages_noprof+0x10/0x10 [ 183.735067][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 183.741296][ C1] alloc_slab_page+0x5f/0x120 [ 183.746165][ C1] allocate_slab+0x5a/0x2f0 [ 183.750799][ C1] ___slab_alloc+0xcd1/0x14b0 [ 183.755585][ C1] ? __alloc_skb+0x1c3/0x440 [ 183.760361][ C1] ? __alloc_skb+0x1c3/0x440 [ 183.765071][ C1] __slab_alloc+0x58/0xa0 [ 183.769594][ C1] ? __alloc_skb+0x1c3/0x440 [ 183.774283][ C1] kmem_cache_alloc_node_noprof+0x1fe/0x320 [ 183.780372][ C1] __alloc_skb+0x1c3/0x440 [ 183.784920][ C1] ? __pfx___alloc_skb+0x10/0x10 [ 183.790070][ C1] ? __timer_delete+0xdf/0x380 [ 183.794982][ C1] __ipv6_ifa_notify+0x2e9/0x11f0 [ 183.800201][ C1] ? __pfx___ipv6_ifa_notify+0x10/0x10 [ 183.805785][ C1] ? mark_lock+0x9a/0x360 [ 183.810330][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 183.816526][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 183.822993][ C1] ? __cancel_work+0x24a/0x390 [ 183.827906][ C1] ? lockdep_hardirqs_on+0x99/0x150 [ 183.833218][ C1] ? __cancel_work+0x2ee/0x390 [ 183.838188][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 183.844657][ C1] addrconf_dad_completed+0x181/0xcd0 [ 183.850276][ C1] ? __pfx_addrconf_dad_completed+0x10/0x10 [ 183.856400][ C1] ? addrconf_dad_work+0x58a/0x16f0 [ 183.861736][ C1] addrconf_dad_work+0xdc2/0x16f0 [ 183.866984][ C1] ? __pfx_addrconf_dad_work+0x10/0x10 [ 183.872575][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 183.879137][ C1] ? process_scheduled_works+0x945/0x1830 [ 183.884957][ C1] process_scheduled_works+0xa2c/0x1830 [ 183.890685][ C1] ? __pfx_process_scheduled_works+0x10/0x10 [ 183.896832][ C1] ? assign_work+0x364/0x3d0 [ 183.901562][ C1] worker_thread+0x86d/0xd50 [ 183.906413][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 183.912429][ C1] ? __kthread_parkme+0x169/0x1d0 [ 183.917670][ C1] ? __pfx_worker_thread+0x10/0x10 [ 183.922892][ C1] kthread+0x2f0/0x390 [ 183.927200][ C1] ? __pfx_worker_thread+0x10/0x10 [ 183.932417][ C1] ? __pfx_kthread+0x10/0x10 [ 183.937201][ C1] ret_from_fork+0x4b/0x80 [ 183.941776][ C1] ? __pfx_kthread+0x10/0x10 [ 183.946543][ C1] ret_from_fork_asm+0x1a/0x30 [ 183.951461][ C1] [ 183.954564][ C1] [ 183.954564][ C1] Showing all locks held in the system: [ 183.962446][ C1] 3 locks held by kworker/0:1/9: [ 183.967591][ C1] 2 locks held by kworker/1:0/25: [ 183.972674][ C1] 2 locks held by kworker/u8:2/35: [ 183.978045][ C1] 3 locks held by kworker/u8:7/2826: [ 183.983571][ C1] 2 locks held by getty/4846: [ 183.988470][ C1] #0: ffff88802a7a90a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 183.998524][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 [ 184.008922][ C1] 1 lock held by syz-executor.0/5395: [ 184.014509][ C1] 2 locks held by syz-executor.3/5426: [ 184.020176][ C1] #0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x9a7/0xf80 [ 184.030335][ C1] #1: ffff88807db3c0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 [ 184.041300][ C1] 1 lock held by syz-executor.4/5435: [ 184.046843][ C1] #0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region+0x62/0xa0 [ 184.058022][ C1] 1 lock held by syz-executor.2/5441: [ 184.063485][ C1] #0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 [ 184.074684][ C1] 3 locks held by syz-executor.2/5447: [ 184.080292][ C1] #0: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 [ 184.090764][ C1] #1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0 [ 184.100888][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 184.111070][ C1] 5 locks held by syz-executor.1/5448: [ 184.116752][ C1] [ 184.119168][ C1] ============================================= [ 184.119168][ C1] [ 185.175951][ C1] DEBUG: holding rtnl_mutex for 10757 jiffies. [ 185.182234][ C1] task:kworker/u8:7 state:R running task stack:23600 pid:2826 tgid:2826 ppid:2 flags:0x00004000 [ 185.194197][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 185.200366][ C1] Call Trace: [ 185.203703][ C1] [ 185.206756][ C1] __schedule+0x17e8/0x4a20 [ 185.211332][ C1] ? mark_lock+0x9a/0x360 [ 185.215756][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 185.221842][ C1] ? ret_from_fork+0x4b/0x80 [ 185.226579][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 185.233004][ C1] ? arch_stack_walk+0x174/0x1b0 [ 185.238078][ C1] ? __pfx___schedule+0x10/0x10 [ 185.243048][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 185.249197][ C1] ? preempt_schedule_irq+0xf0/0x1c0 [ 185.254576][ C1] preempt_schedule_irq+0xfb/0x1c0 [ 185.259820][ C1] ? __pfx_preempt_schedule_irq+0x10/0x10 [ 185.265619][ C1] irqentry_exit+0x5e/0x90 [ 185.270211][ C1] asm_sysvec_reschedule_ipi+0x1a/0x20 [ 185.275744][ C1] RIP: 0010:save_stack+0x185/0x1f0 [ 185.281006][ C1] Code: 44 2c 14 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 e0 00 00 00 75 6a 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 cc cc cc cc 89 d9 80 e1 07 fe c1 38 c1 0f 8c 14 ff ff ff 48 [ 185.300783][ C1] RSP: 0018:ffffc90009a17050 EFLAGS: 00000246 [ 185.306990][ C1] RAX: 00000000040a0252 RBX: 0000000000000000 RCX: ffff88802b5fda00 [ 185.315056][ C1] RDX: 0000000000000000 RSI: 00000000040a0252 RDI: 0000000000000000 [ 185.323166][ C1] RBP: ffffc90009a17050 R08: ffffffff82038425 R09: 0000000000000010 [ 185.331293][ C1] R10: 0000000000000003 R11: ffffffff817ef6f0 R12: 0000000000152820 [ 185.339410][ C1] R13: 0000000000000001 R14: ffffea0000b4e780 R15: dffffc0000000000 [ 185.347526][ C1] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 185.353850][ C1] ? save_stack+0x115/0x1f0 [ 185.358534][ C1] __set_page_owner+0x92/0x800 [ 185.363419][ C1] ? __pfx_seqcount_lockdep_reader_access+0x10/0x10 [ 185.370193][ C1] ? get_page_from_freelist+0x7d7/0x2d70 [ 185.375943][ C1] ? __pfx_lock_release+0x10/0x10 [ 185.381062][ C1] ? __pfx___set_page_owner+0x10/0x10 [ 185.386579][ C1] post_alloc_hook+0x1f3/0x230 [ 185.391497][ C1] get_page_from_freelist+0x2cbd/0x2d70 [ 185.397234][ C1] ? mark_lock+0x9a/0x360 [ 185.401714][ C1] __alloc_pages_noprof+0x256/0x6c0 [ 185.407049][ C1] ? __pfx___alloc_pages_noprof+0x10/0x10 [ 185.412878][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 185.419127][ C1] alloc_slab_page+0x5f/0x120 [ 185.423866][ C1] allocate_slab+0x5a/0x2f0 [ 185.428491][ C1] ___slab_alloc+0xcd1/0x14b0 [ 185.433245][ C1] ? __alloc_skb+0x1c3/0x440 [ 185.437988][ C1] ? __alloc_skb+0x1c3/0x440 [ 185.442649][ C1] __slab_alloc+0x58/0xa0 [ 185.447301][ C1] ? __alloc_skb+0x1c3/0x440 [ 185.452011][ C1] kmem_cache_alloc_node_noprof+0x1fe/0x320 [ 185.458049][ C1] __alloc_skb+0x1c3/0x440 [ 185.462646][ C1] ? __pfx___alloc_skb+0x10/0x10 [ 185.467717][ C1] ? __timer_delete+0xdf/0x380 [ 185.472560][ C1] __ipv6_ifa_notify+0x2e9/0x11f0 [ 185.477750][ C1] ? __pfx___ipv6_ifa_notify+0x10/0x10 [ 185.483267][ C1] ? mark_lock+0x9a/0x360 [ 185.487769][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 185.493820][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 185.500284][ C1] ? __cancel_work+0x24a/0x390 [ 185.505141][ C1] ? lockdep_hardirqs_on+0x99/0x150 [ 185.510495][ C1] ? __cancel_work+0x2ee/0x390 [ 185.515332][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 185.521839][ C1] addrconf_dad_completed+0x181/0xcd0 [ 185.527341][ C1] ? __pfx_addrconf_dad_completed+0x10/0x10 [ 185.533352][ C1] ? addrconf_dad_work+0x58a/0x16f0 [ 185.538733][ C1] addrconf_dad_work+0xdc2/0x16f0 [ 185.543855][ C1] ? __pfx_addrconf_dad_work+0x10/0x10 [ 185.549426][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 185.555860][ C1] ? process_scheduled_works+0x945/0x1830 [ 185.561716][ C1] process_scheduled_works+0xa2c/0x1830 [ 185.567430][ C1] ? __pfx_process_scheduled_works+0x10/0x10 [ 185.573483][ C1] ? assign_work+0x364/0x3d0 [ 185.578183][ C1] worker_thread+0x86d/0xd50 [ 185.582905][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 185.588981][ C1] ? __kthread_parkme+0x169/0x1d0 [ 185.594102][ C1] ? __pfx_worker_thread+0x10/0x10 [ 185.599363][ C1] kthread+0x2f0/0x390 [ 185.603524][ C1] ? __pfx_worker_thread+0x10/0x10 [ 185.608773][ C1] ? __pfx_kthread+0x10/0x10 [ 185.613426][ C1] ret_from_fork+0x4b/0x80 [ 185.617973][ C1] ? __pfx_kthread+0x10/0x10 [ 185.622628][ C1] ret_from_fork_asm+0x1a/0x30 [ 185.627542][ C1] [ 185.630619][ C1] [ 185.630619][ C1] Showing all locks held in the system: [ 185.638473][ C1] 3 locks held by kworker/0:1/9: [ 185.643492][ C1] 2 locks held by kworker/1:0/25: [ 185.648644][ C1] 3 locks held by kworker/1:0H/26: [ 185.653855][ C1] #0: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 [ 185.664172][ C1] #1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0 [ 185.674133][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 185.684149][ C1] 2 locks held by kworker/u8:2/35: [ 185.689436][ C1] 3 locks held by kworker/u8:7/2826: [ 185.694800][ C1] 2 locks held by getty/4846: [ 185.699676][ C1] #0: ffff88802a7a90a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 185.709666][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 [ 185.720002][ C1] 1 lock held by syz-executor.0/5395: [ 185.725466][ C1] 2 locks held by syz-executor.3/5426: [ 185.731063][ C1] #0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x9a7/0xf80 [ 185.741195][ C1] #1: ffff88807db3c0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 [ 185.751568][ C1] 1 lock held by syz-executor.4/5435: [ 185.757060][ C1] #0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region+0x62/0xa0 [ 185.768150][ C1] 1 lock held by syz-executor.2/5441: [ 185.773599][ C1] #0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 [ 185.784687][ C1] 5 locks held by syz-executor.1/5448: [ 185.790294][ C1] [ 185.792674][ C1] ============================================= [ 185.792674][ C1] [ 186.855985][ C1] DEBUG: holding rtnl_mutex for 10925 jiffies. [ 186.862293][ C1] task:kworker/u8:7 state:R running task stack:23600 pid:2826 tgid:2826 ppid:2 flags:0x00004000 [ 186.874228][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 186.880362][ C1] Call Trace: [ 186.883703][ C1] [ 186.886720][ C1] __schedule+0x17e8/0x4a20 [ 186.891318][ C1] ? mark_lock+0x9a/0x360 [ 186.895713][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 186.901870][ C1] ? ret_from_fork+0x4b/0x80 [ 186.906588][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 186.912973][ C1] ? arch_stack_walk+0x174/0x1b0 [ 186.918044][ C1] ? __pfx___schedule+0x10/0x10 [ 186.922983][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 186.929080][ C1] ? preempt_schedule_irq+0xf0/0x1c0 [ 186.934459][ C1] preempt_schedule_irq+0xfb/0x1c0 [ 186.939698][ C1] ? __pfx_preempt_schedule_irq+0x10/0x10 [ 186.945494][ C1] irqentry_exit+0x5e/0x90 [ 186.950050][ C1] asm_sysvec_reschedule_ipi+0x1a/0x20 [ 186.955564][ C1] RIP: 0010:save_stack+0x185/0x1f0 [ 186.960812][ C1] Code: 44 2c 14 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 e0 00 00 00 75 6a 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 cc cc cc cc 89 d9 80 e1 07 fe c1 38 c1 0f 8c 14 ff ff ff 48 [ 186.980614][ C1] RSP: 0018:ffffc90009a17050 EFLAGS: 00000246 [ 186.986819][ C1] RAX: 00000000040a0252 RBX: 0000000000000000 RCX: ffff88802b5fda00 [ 186.994914][ C1] RDX: 0000000000000000 RSI: 00000000040a0252 RDI: 0000000000000000 [ 187.003058][ C1] RBP: ffffc90009a17050 R08: ffffffff82038425 R09: 0000000000000010 [ 187.011209][ C1] R10: 0000000000000003 R11: ffffffff817ef6f0 R12: 0000000000152820 [ 187.019423][ C1] R13: 0000000000000001 R14: ffffea0000b4e780 R15: dffffc0000000000 [ 187.027523][ C1] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 187.033797][ C1] ? save_stack+0x115/0x1f0 [ 187.038413][ C1] __set_page_owner+0x92/0x800 [ 187.043265][ C1] ? __pfx_seqcount_lockdep_reader_access+0x10/0x10 [ 187.049964][ C1] ? get_page_from_freelist+0x7d7/0x2d70 [ 187.055691][ C1] ? __pfx_lock_release+0x10/0x10 [ 187.060864][ C1] ? __pfx___set_page_owner+0x10/0x10 [ 187.066373][ C1] post_alloc_hook+0x1f3/0x230 [ 187.071219][ C1] get_page_from_freelist+0x2cbd/0x2d70 [ 187.077019][ C1] ? mark_lock+0x9a/0x360 [ 187.081441][ C1] __alloc_pages_noprof+0x256/0x6c0 [ 187.086812][ C1] ? __pfx___alloc_pages_noprof+0x10/0x10 [ 187.092640][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 187.098764][ C1] alloc_slab_page+0x5f/0x120 [ 187.103505][ C1] allocate_slab+0x5a/0x2f0 [ 187.108148][ C1] ___slab_alloc+0xcd1/0x14b0 [ 187.112931][ C1] ? __alloc_skb+0x1c3/0x440 [ 187.117661][ C1] ? __alloc_skb+0x1c3/0x440 [ 187.122307][ C1] __slab_alloc+0x58/0xa0 [ 187.126768][ C1] ? __alloc_skb+0x1c3/0x440 [ 187.131415][ C1] kmem_cache_alloc_node_noprof+0x1fe/0x320 [ 187.137471][ C1] __alloc_skb+0x1c3/0x440 [ 187.141979][ C1] ? __pfx___alloc_skb+0x10/0x10 [ 187.147009][ C1] ? __timer_delete+0xdf/0x380 [ 187.151867][ C1] __ipv6_ifa_notify+0x2e9/0x11f0 [ 187.156997][ C1] ? __pfx___ipv6_ifa_notify+0x10/0x10 [ 187.162542][ C1] ? mark_lock+0x9a/0x360 [ 187.166998][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 187.173093][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 187.179564][ C1] ? __cancel_work+0x24a/0x390 [ 187.184462][ C1] ? lockdep_hardirqs_on+0x99/0x150 [ 187.189868][ C1] ? __cancel_work+0x2ee/0x390 [ 187.194717][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 187.201230][ C1] addrconf_dad_completed+0x181/0xcd0 [ 187.206750][ C1] ? __pfx_addrconf_dad_completed+0x10/0x10 [ 187.212723][ C1] ? addrconf_dad_work+0x58a/0x16f0 [ 187.218068][ C1] addrconf_dad_work+0xdc2/0x16f0 [ 187.223188][ C1] ? __pfx_addrconf_dad_work+0x10/0x10 [ 187.228813][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 187.235246][ C1] ? process_scheduled_works+0x945/0x1830 [ 187.241105][ C1] process_scheduled_works+0xa2c/0x1830 [ 187.246823][ C1] ? __pfx_process_scheduled_works+0x10/0x10 [ 187.252897][ C1] ? assign_work+0x364/0x3d0 [ 187.257596][ C1] worker_thread+0x86d/0xd50 [ 187.262308][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 187.268340][ C1] ? __kthread_parkme+0x169/0x1d0 [ 187.273472][ C1] ? __pfx_worker_thread+0x10/0x10 [ 187.278730][ C1] kthread+0x2f0/0x390 [ 187.282866][ C1] ? __pfx_worker_thread+0x10/0x10 [ 187.288136][ C1] ? __pfx_kthread+0x10/0x10 [ 187.292789][ C1] ret_from_fork+0x4b/0x80 [ 187.297422][ C1] ? __pfx_kthread+0x10/0x10 [ 187.302224][ C1] ret_from_fork_asm+0x1a/0x30 [ 187.307178][ C1] [ 187.310288][ C1] [ 187.310288][ C1] Showing all locks held in the system: [ 187.318156][ C1] 3 locks held by kworker/0:1/9: [ 187.323183][ C1] 2 locks held by kworker/1:0/25: [ 187.328334][ C1] 3 locks held by kworker/1:0H/26: [ 187.333569][ C1] #0: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 [ 187.343908][ C1] #1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0 [ 187.354028][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 187.364164][ C1] 2 locks held by kworker/u8:2/35: [ 187.369445][ C1] 3 locks held by kworker/u8:7/2826: [ 187.374839][ C1] 2 locks held by getty/4846: [ 187.379684][ C1] #0: ffff88802a7a90a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 187.389671][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 [ 187.399993][ C1] 1 lock held by syz-executor.0/5395: [ 187.405425][ C1] 2 locks held by syz-executor.3/5426: [ 187.411042][ C1] #0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x9a7/0xf80 [ 187.421099][ C1] #1: ffff88807db3c0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 [ 187.431600][ C1] 1 lock held by syz-executor.4/5435: [ 187.437128][ C1] #0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region+0x62/0xa0 [ 187.448215][ C1] 1 lock held by syz-executor.2/5441: [ 187.453639][ C1] #0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 [ 187.464739][ C1] 5 locks held by syz-executor.1/5448: [ 187.470337][ C1] [ 187.472712][ C1] ============================================= [ 187.472712][ C1] [ 188.535974][ C1] DEBUG: holding rtnl_mutex for 11093 jiffies. [ 188.542189][ C1] task:kworker/u8:7 state:R running task stack:23600 pid:2826 tgid:2826 ppid:2 flags:0x00004000 [ 188.555505][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 188.561583][ C1] Call Trace: [ 188.564878][ C1] [ 188.567885][ C1] __schedule+0x17e8/0x4a20 [ 188.572423][ C1] ? mark_lock+0x9a/0x360 [ 188.576838][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 188.582857][ C1] ? ret_from_fork+0x4b/0x80 [ 188.587526][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 188.593883][ C1] ? arch_stack_walk+0x174/0x1b0 [ 188.598905][ C1] ? __pfx___schedule+0x10/0x10 [ 188.603812][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 188.609916][ C1] ? preempt_schedule_irq+0xf0/0x1c0 [ 188.615232][ C1] preempt_schedule_irq+0xfb/0x1c0 [ 188.620461][ C1] ? __pfx_preempt_schedule_irq+0x10/0x10 [ 188.626270][ C1] irqentry_exit+0x5e/0x90 [ 188.630721][ C1] asm_sysvec_reschedule_ipi+0x1a/0x20 [ 188.636259][ C1] RIP: 0010:save_stack+0x185/0x1f0 [ 188.641399][ C1] Code: 44 2c 14 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 e0 00 00 00 75 6a 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 cc cc cc cc 89 d9 80 e1 07 fe c1 38 c1 0f 8c 14 ff ff ff 48 [ 188.661085][ C1] RSP: 0018:ffffc90009a17050 EFLAGS: 00000246 [ 188.667234][ C1] RAX: 00000000040a0252 RBX: 0000000000000000 RCX: ffff88802b5fda00 [ 188.675232][ C1] RDX: 0000000000000000 RSI: 00000000040a0252 RDI: 0000000000000000 [ 188.683276][ C1] RBP: ffffc90009a17050 R08: ffffffff82038425 R09: 0000000000000010 [ 188.691325][ C1] R10: 0000000000000003 R11: ffffffff817ef6f0 R12: 0000000000152820 [ 188.699370][ C1] R13: 0000000000000001 R14: ffffea0000b4e780 R15: dffffc0000000000 [ 188.707441][ C1] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 188.713633][ C1] ? save_stack+0x115/0x1f0 [ 188.718232][ C1] __set_page_owner+0x92/0x800 [ 188.723026][ C1] ? __pfx_seqcount_lockdep_reader_access+0x10/0x10 [ 188.729708][ C1] ? get_page_from_freelist+0x7d7/0x2d70 [ 188.735373][ C1] ? __pfx_lock_release+0x10/0x10 [ 188.740488][ C1] ? __pfx___set_page_owner+0x10/0x10 [ 188.745945][ C1] post_alloc_hook+0x1f3/0x230 [ 188.750739][ C1] get_page_from_freelist+0x2cbd/0x2d70 [ 188.756391][ C1] ? mark_lock+0x9a/0x360 [ 188.760778][ C1] __alloc_pages_noprof+0x256/0x6c0 [ 188.766062][ C1] ? __pfx___alloc_pages_noprof+0x10/0x10 [ 188.771820][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 188.777894][ C1] alloc_slab_page+0x5f/0x120 [ 188.782597][ C1] allocate_slab+0x5a/0x2f0 [ 188.787173][ C1] ___slab_alloc+0xcd1/0x14b0 [ 188.791889][ C1] ? __alloc_skb+0x1c3/0x440 [ 188.796558][ C1] ? __alloc_skb+0x1c3/0x440 [ 188.801171][ C1] __slab_alloc+0x58/0xa0 [ 188.805526][ C1] ? __alloc_skb+0x1c3/0x440 [ 188.810205][ C1] kmem_cache_alloc_node_noprof+0x1fe/0x320 [ 188.816187][ C1] __alloc_skb+0x1c3/0x440 [ 188.820641][ C1] ? __pfx___alloc_skb+0x10/0x10 [ 188.825607][ C1] ? __timer_delete+0xdf/0x380 [ 188.830456][ C1] __ipv6_ifa_notify+0x2e9/0x11f0 [ 188.835513][ C1] ? __pfx___ipv6_ifa_notify+0x10/0x10 [ 188.841047][ C1] ? mark_lock+0x9a/0x360 [ 188.845411][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 188.851475][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 188.857892][ C1] ? __cancel_work+0x24a/0x390 [ 188.862682][ C1] ? lockdep_hardirqs_on+0x99/0x150 [ 188.867958][ C1] ? __cancel_work+0x2ee/0x390 [ 188.872762][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 188.879180][ C1] addrconf_dad_completed+0x181/0xcd0 [ 188.884592][ C1] ? __pfx_addrconf_dad_completed+0x10/0x10 [ 188.890583][ C1] ? addrconf_dad_work+0x58a/0x16f0 [ 188.895828][ C1] addrconf_dad_work+0xdc2/0x16f0 [ 188.900949][ C1] ? __pfx_addrconf_dad_work+0x10/0x10 [ 188.906480][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 188.912946][ C1] ? process_scheduled_works+0x945/0x1830 [ 188.918753][ C1] process_scheduled_works+0xa2c/0x1830 [ 188.924366][ C1] ? __pfx_process_scheduled_works+0x10/0x10 [ 188.930434][ C1] ? assign_work+0x364/0x3d0 [ 188.935056][ C1] worker_thread+0x86d/0xd50 [ 188.939734][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 188.945658][ C1] ? __kthread_parkme+0x169/0x1d0 [ 188.950763][ C1] ? __pfx_worker_thread+0x10/0x10 [ 188.955951][ C1] kthread+0x2f0/0x390 [ 188.960044][ C1] ? __pfx_worker_thread+0x10/0x10 [ 188.965176][ C1] ? __pfx_kthread+0x10/0x10 [ 188.969851][ C1] ret_from_fork+0x4b/0x80 [ 188.974295][ C1] ? __pfx_kthread+0x10/0x10 [ 188.978964][ C1] ret_from_fork_asm+0x1a/0x30 [ 188.983777][ C1] [ 188.986865][ C1] [ 188.986865][ C1] Showing all locks held in the system: [ 188.994590][ C1] 3 locks held by kworker/0:1/9: [ 188.999601][ C1] 2 locks held by kworker/1:0/25: [ 189.004644][ C1] 2 locks held by kworker/u8:2/35: [ 189.009861][ C1] 3 locks held by kworker/u8:7/2826: [ 189.015179][ C1] 2 locks held by getty/4846: [ 189.019930][ C1] #0: ffff88802a7a90a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 189.029804][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 [ 189.040022][ C1] 1 lock held by syz-executor.0/5395: [ 189.045426][ C1] 2 locks held by syz-executor.3/5426: [ 189.050949][ C1] #0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x9a7/0xf80 [ 189.060905][ C1] #1: ffff88807db3c0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 [ 189.071230][ C1] 1 lock held by syz-executor.4/5435: [ 189.076663][ C1] #0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region+0x62/0xa0 [ 189.087740][ C1] 1 lock held by syz-executor.2/5441: [ 189.093146][ C1] #0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 [ 189.104190][ C1] 3 locks held by syz-executor.2/5446: [ 189.109751][ C1] #0: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 [ 189.120004][ C1] #1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0 [ 189.129921][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 189.139923][ C1] 5 locks held by syz-executor.1/5448: [ 189.145405][ C1] [ 189.147811][ C1] ============================================= [ 189.147811][ C1] [ 190.215978][ C1] DEBUG: holding rtnl_mutex for 11261 jiffies. [ 190.222253][ C1] task:kworker/u8:7 state:R running task stack:23600 pid:2826 tgid:2826 ppid:2 flags:0x00004000 [ 190.234129][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 190.240250][ C1] Call Trace: [ 190.243559][ C1] [ 190.246560][ C1] __schedule+0x17e8/0x4a20 [ 190.251099][ C1] ? mark_lock+0x9a/0x360 [ 190.255467][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 190.261530][ C1] ? ret_from_fork+0x4b/0x80 [ 190.266200][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 190.272554][ C1] ? arch_stack_walk+0x174/0x1b0 [ 190.277581][ C1] ? __pfx___schedule+0x10/0x10 [ 190.282464][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 190.288539][ C1] ? preempt_schedule_irq+0xf0/0x1c0 [ 190.293861][ C1] preempt_schedule_irq+0xfb/0x1c0 [ 190.299051][ C1] ? __pfx_preempt_schedule_irq+0x10/0x10 [ 190.304815][ C1] irqentry_exit+0x5e/0x90 [ 190.309311][ C1] asm_sysvec_reschedule_ipi+0x1a/0x20 [ 190.314796][ C1] RIP: 0010:save_stack+0x185/0x1f0 [ 190.319986][ C1] Code: 44 2c 14 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 e0 00 00 00 75 6a 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 cc cc cc cc 89 d9 80 e1 07 fe c1 38 c1 0f 8c 14 ff ff ff 48 [ 190.339694][ C1] RSP: 0018:ffffc90009a17050 EFLAGS: 00000246 [ 190.345812][ C1] RAX: 00000000040a0252 RBX: 0000000000000000 RCX: ffff88802b5fda00 [ 190.353878][ C1] RDX: 0000000000000000 RSI: 00000000040a0252 RDI: 0000000000000000 [ 190.361925][ C1] RBP: ffffc90009a17050 R08: ffffffff82038425 R09: 0000000000000010 [ 190.369983][ C1] R10: 0000000000000003 R11: ffffffff817ef6f0 R12: 0000000000152820 [ 190.378030][ C1] R13: 0000000000000001 R14: ffffea0000b4e780 R15: dffffc0000000000 [ 190.386081][ C1] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 190.392273][ C1] ? save_stack+0x115/0x1f0 [ 190.396861][ C1] __set_page_owner+0x92/0x800 [ 190.401659][ C1] ? __pfx_seqcount_lockdep_reader_access+0x10/0x10 [ 190.408431][ C1] ? get_page_from_freelist+0x7d7/0x2d70 [ 190.414126][ C1] ? __pfx_lock_release+0x10/0x10 [ 190.419237][ C1] ? __pfx___set_page_owner+0x10/0x10 [ 190.424650][ C1] post_alloc_hook+0x1f3/0x230 [ 190.429494][ C1] get_page_from_freelist+0x2cbd/0x2d70 [ 190.435092][ C1] ? mark_lock+0x9a/0x360 [ 190.439528][ C1] __alloc_pages_noprof+0x256/0x6c0 [ 190.444765][ C1] ? __pfx___alloc_pages_noprof+0x10/0x10 [ 190.450587][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 190.456676][ C1] alloc_slab_page+0x5f/0x120 [ 190.461384][ C1] allocate_slab+0x5a/0x2f0 [ 190.465968][ C1] ___slab_alloc+0xcd1/0x14b0 [ 190.470674][ C1] ? __alloc_skb+0x1c3/0x440 [ 190.475300][ C1] ? __alloc_skb+0x1c3/0x440 [ 190.479972][ C1] __slab_alloc+0x58/0xa0 [ 190.484333][ C1] ? __alloc_skb+0x1c3/0x440 [ 190.488997][ C1] kmem_cache_alloc_node_noprof+0x1fe/0x320 [ 190.494930][ C1] __alloc_skb+0x1c3/0x440 [ 190.499427][ C1] ? __pfx___alloc_skb+0x10/0x10 [ 190.504392][ C1] ? __timer_delete+0xdf/0x380 [ 190.509242][ C1] __ipv6_ifa_notify+0x2e9/0x11f0 [ 190.514300][ C1] ? __pfx___ipv6_ifa_notify+0x10/0x10 [ 190.519832][ C1] ? mark_lock+0x9a/0x360 [ 190.524196][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 190.530253][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 190.536657][ C1] ? __cancel_work+0x24a/0x390 [ 190.541455][ C1] ? lockdep_hardirqs_on+0x99/0x150 [ 190.546744][ C1] ? __cancel_work+0x2ee/0x390 [ 190.551552][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 190.557977][ C1] addrconf_dad_completed+0x181/0xcd0 [ 190.563391][ C1] ? __pfx_addrconf_dad_completed+0x10/0x10 [ 190.569376][ C1] ? addrconf_dad_work+0x58a/0x16f0 [ 190.574611][ C1] addrconf_dad_work+0xdc2/0x16f0 [ 190.579740][ C1] ? __pfx_addrconf_dad_work+0x10/0x10 [ 190.585233][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 190.591651][ C1] ? process_scheduled_works+0x945/0x1830 [ 190.597453][ C1] process_scheduled_works+0xa2c/0x1830 [ 190.603057][ C1] ? __pfx_process_scheduled_works+0x10/0x10 [ 190.609128][ C1] ? assign_work+0x364/0x3d0 [ 190.613756][ C1] worker_thread+0x86d/0xd50 [ 190.618437][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 190.624364][ C1] ? __kthread_parkme+0x169/0x1d0 [ 190.629470][ C1] ? __pfx_worker_thread+0x10/0x10 [ 190.634610][ C1] kthread+0x2f0/0x390 [ 190.638770][ C1] ? __pfx_worker_thread+0x10/0x10 [ 190.643911][ C1] ? __pfx_kthread+0x10/0x10 [ 190.648567][ C1] ret_from_fork+0x4b/0x80 [ 190.653015][ C1] ? __pfx_kthread+0x10/0x10 [ 190.657695][ C1] ret_from_fork_asm+0x1a/0x30 [ 190.662512][ C1] [ 190.665566][ C1] [ 190.665566][ C1] Showing all locks held in the system: [ 190.673351][ C1] 3 locks held by kworker/0:1/9: [ 190.678362][ C1] 2 locks held by kworker/1:0/25: [ 190.683406][ C1] 2 locks held by kworker/u8:2/35: [ 190.688609][ C1] 3 locks held by kworker/u8:7/2826: [ 190.693914][ C1] 2 locks held by getty/4846: [ 190.698656][ C1] #0: ffff88802a7a90a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 190.708532][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 [ 190.718762][ C1] 1 lock held by syz-executor.0/5395: [ 190.724152][ C1] 2 locks held by syz-executor.3/5426: [ 190.729675][ C1] #0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x9a7/0xf80 [ 190.739631][ C1] #1: ffff88807db3c0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 [ 190.749875][ C1] 1 lock held by syz-executor.4/5435: [ 190.755274][ C1] #0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region+0x62/0xa0 [ 190.766272][ C1] 1 lock held by syz-executor.2/5441: [ 190.771663][ C1] #0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 [ 190.782667][ C1] 3 locks held by syz-executor.2/5446: [ 190.788199][ C1] #0: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 [ 190.798415][ C1] #1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0 [ 190.808277][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 190.818232][ C1] 5 locks held by syz-executor.1/5448: [ 190.823718][ C1] [ 190.826098][ C1] ============================================= [ 190.826098][ C1] [ 191.895962][ C1] DEBUG: holding rtnl_mutex for 11429 jiffies. [ 191.902234][ C1] task:kworker/u8:7 state:R running task stack:23600 pid:2826 tgid:2826 ppid:2 flags:0x00004000 [ 191.914075][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 191.920150][ C1] Call Trace: [ 191.923450][ C1] [ 191.926449][ C1] __schedule+0x17e8/0x4a20 [ 191.930992][ C1] ? mark_lock+0x9a/0x360 [ 191.935353][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 191.941413][ C1] ? ret_from_fork+0x4b/0x80 [ 191.946119][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 191.952476][ C1] ? arch_stack_walk+0x174/0x1b0 [ 191.957496][ C1] ? __pfx___schedule+0x10/0x10 [ 191.962380][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 191.968442][ C1] ? preempt_schedule_irq+0xf0/0x1c0 [ 191.973755][ C1] preempt_schedule_irq+0xfb/0x1c0 [ 191.978977][ C1] ? __pfx_preempt_schedule_irq+0x10/0x10 [ 191.984768][ C1] irqentry_exit+0x5e/0x90 [ 191.989304][ C1] asm_sysvec_reschedule_ipi+0x1a/0x20 [ 191.994810][ C1] RIP: 0010:save_stack+0x185/0x1f0 [ 192.000015][ C1] Code: 44 2c 14 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 e0 00 00 00 75 6a 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 cc cc cc cc 89 d9 80 e1 07 fe c1 38 c1 0f 8c 14 ff ff ff 48 [ 192.019706][ C1] RSP: 0018:ffffc90009a17050 EFLAGS: 00000246 [ 192.025936][ C1] RAX: 00000000040a0252 RBX: 0000000000000000 RCX: ffff88802b5fda00 [ 192.033929][ C1] RDX: 0000000000000000 RSI: 00000000040a0252 RDI: 0000000000000000 [ 192.041976][ C1] RBP: ffffc90009a17050 R08: ffffffff82038425 R09: 0000000000000010 [ 192.050071][ C1] R10: 0000000000000003 R11: ffffffff817ef6f0 R12: 0000000000152820 [ 192.058130][ C1] R13: 0000000000000001 R14: ffffea0000b4e780 R15: dffffc0000000000 [ 192.066184][ C1] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 192.072378][ C1] ? save_stack+0x115/0x1f0 [ 192.076974][ C1] __set_page_owner+0x92/0x800 [ 192.081767][ C1] ? __pfx_seqcount_lockdep_reader_access+0x10/0x10 [ 192.088485][ C1] ? get_page_from_freelist+0x7d7/0x2d70 [ 192.094186][ C1] ? __pfx_lock_release+0x10/0x10 [ 192.099314][ C1] ? __pfx___set_page_owner+0x10/0x10 [ 192.104745][ C1] post_alloc_hook+0x1f3/0x230 [ 192.109627][ C1] get_page_from_freelist+0x2cbd/0x2d70 [ 192.115241][ C1] ? mark_lock+0x9a/0x360 [ 192.119688][ C1] __alloc_pages_noprof+0x256/0x6c0 [ 192.124923][ C1] ? __pfx___alloc_pages_noprof+0x10/0x10 [ 192.130734][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 192.136799][ C1] alloc_slab_page+0x5f/0x120 [ 192.141502][ C1] allocate_slab+0x5a/0x2f0 [ 192.146087][ C1] ___slab_alloc+0xcd1/0x14b0 [ 192.150796][ C1] ? __alloc_skb+0x1c3/0x440 [ 192.155425][ C1] ? __alloc_skb+0x1c3/0x440 [ 192.160092][ C1] __slab_alloc+0x58/0xa0 [ 192.164458][ C1] ? __alloc_skb+0x1c3/0x440 [ 192.169121][ C1] kmem_cache_alloc_node_noprof+0x1fe/0x320 [ 192.175068][ C1] __alloc_skb+0x1c3/0x440 [ 192.179615][ C1] ? __pfx___alloc_skb+0x10/0x10 [ 192.184588][ C1] ? __timer_delete+0xdf/0x380 [ 192.189457][ C1] __ipv6_ifa_notify+0x2e9/0x11f0 [ 192.194521][ C1] ? __pfx___ipv6_ifa_notify+0x10/0x10 [ 192.200071][ C1] ? mark_lock+0x9a/0x360 [ 192.204436][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 192.210510][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 192.217014][ C1] ? __cancel_work+0x24a/0x390 [ 192.221809][ C1] ? lockdep_hardirqs_on+0x99/0x150 [ 192.227100][ C1] ? __cancel_work+0x2ee/0x390 [ 192.231899][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 192.238351][ C1] addrconf_dad_completed+0x181/0xcd0 [ 192.243787][ C1] ? __pfx_addrconf_dad_completed+0x10/0x10 [ 192.249790][ C1] ? addrconf_dad_work+0x58a/0x16f0 [ 192.255032][ C1] addrconf_dad_work+0xdc2/0x16f0 [ 192.260240][ C1] ? __pfx_addrconf_dad_work+0x10/0x10 [ 192.265743][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 192.272171][ C1] ? process_scheduled_works+0x945/0x1830 [ 192.277968][ C1] process_scheduled_works+0xa2c/0x1830 [ 192.283580][ C1] ? __pfx_process_scheduled_works+0x10/0x10 [ 192.289661][ C1] ? assign_work+0x364/0x3d0 [ 192.294300][ C1] worker_thread+0x86d/0xd50 [ 192.298984][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 192.304917][ C1] ? __kthread_parkme+0x169/0x1d0 [ 192.310021][ C1] ? __pfx_worker_thread+0x10/0x10 [ 192.315162][ C1] kthread+0x2f0/0x390 [ 192.319323][ C1] ? __pfx_worker_thread+0x10/0x10 [ 192.324460][ C1] ? __pfx_kthread+0x10/0x10 [ 192.329134][ C1] ret_from_fork+0x4b/0x80 [ 192.333582][ C1] ? __pfx_kthread+0x10/0x10 [ 192.338265][ C1] ret_from_fork_asm+0x1a/0x30 [ 192.343080][ C1] [ 192.346167][ C1] [ 192.346167][ C1] Showing all locks held in the system: [ 192.353914][ C1] 3 locks held by kworker/0:1/9: [ 192.358959][ C1] 2 locks held by kworker/1:0/25: [ 192.364004][ C1] 2 locks held by kworker/u8:2/35: [ 192.369218][ C1] 3 locks held by kworker/u8:7/2826: [ 192.374521][ C1] 2 locks held by getty/4846: [ 192.379307][ C1] #0: ffff88802a7a90a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 192.389610][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 [ 192.399846][ C1] 1 lock held by syz-executor.0/5395: [ 192.405240][ C1] 2 locks held by syz-executor.3/5426: [ 192.410830][ C1] #0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x9a7/0xf80 [ 192.420822][ C1] #1: ffff88807db3c0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 [ 192.431118][ C1] 1 lock held by syz-executor.4/5435: [ 192.436564][ C1] #0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region+0x62/0xa0 [ 192.447563][ C1] 1 lock held by syz-executor.2/5441: [ 192.452955][ C1] #0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 [ 192.463961][ C1] 3 locks held by syz-executor.2/5446: [ 192.469486][ C1] #0: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 [ 192.479705][ C1] #1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0 [ 192.489586][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 192.499577][ C1] 5 locks held by syz-executor.1/5448: [ 192.505059][ C1] [ 192.507453][ C1] ============================================= [ 192.507453][ C1]