bisecting cause commit starting from 3b47fd5ca9ead91156bcdf6435279ad0b14a650c
building syzkaller on 040fda588472da50749a3f605e183ad5c02104f4
testing commit 3b47fd5ca9ead91156bcdf6435279ad0b14a650c with gcc (GCC) 8.1.0
run #0: crashed: INFO: rcu detected stall in mld_ifc_timer_expire
run #1: crashed: INFO: rcu detected stall in br_handle_frame
run #2: crashed: INFO: rcu detected stall in br_handle_frame
run #3: crashed: INFO: rcu detected stall in br_handle_frame
run #4: crashed: INFO: rcu detected stall in addrconf_dad_work
run #5: crashed: INFO: rcu detected stall in br_handle_frame
run #6: crashed: INFO: rcu detected stall in br_handle_frame
run #7: crashed: INFO: rcu detected stall in br_handle_frame
run #8: crashed: INFO: rcu detected stall in mld_ifc_timer_expire
run #9: crashed: INFO: rcu detected stall in br_handle_frame
testing release v5.2
testing commit 0ecfebd2b52404ae0c54a878c872bb93363ada36 with gcc (GCC) 8.1.0
run #0: crashed: INFO: rcu detected stall in mld_ifc_timer_expire
run #1: crashed: INFO: rcu detected stall in br_handle_frame
run #2: crashed: INFO: rcu detected stall in addrconf_dad_work
run #3: crashed: INFO: rcu detected stall in mld_dad_timer_expire
run #4: crashed: INFO: rcu detected stall in br_handle_frame
run #5: crashed: INFO: rcu detected stall in mld_ifc_timer_expire
run #6: crashed: INFO: rcu detected stall in br_handle_frame
run #7: crashed: INFO: rcu detected stall in mld_ifc_timer_expire
run #8: crashed: INFO: rcu detected stall in addrconf_dad_work
run #9: crashed: INFO: rcu detected stall in mld_dad_timer_expire
testing release v5.1
testing commit e93c9c99a629c61837d5a7fc2120cd2b6c70dbdd with gcc (GCC) 8.1.0
run #0: crashed: INFO: rcu detected stall in addrconf_dad_work
run #1: crashed: INFO: rcu detected stall in addrconf_dad_work
run #2: crashed: INFO: rcu detected stall in addrconf_dad_work
run #3: crashed: INFO: rcu detected stall in addrconf_dad_work
run #4: crashed: INFO: rcu detected stall in br_handle_frame
run #5: crashed: INFO: rcu detected stall in addrconf_dad_work
run #6: crashed: INFO: rcu detected stall in addrconf_dad_work
run #7: crashed: INFO: rcu detected stall in br_handle_frame
run #8: crashed: INFO: rcu detected stall in mld_ifc_timer_expire
run #9: crashed: INFO: rcu detected stall in mld_ifc_timer_expire
testing release v5.0
testing commit 1c163f4c7b3f621efff9b28a47abb36f7378d783 with gcc (GCC) 8.1.0
run #0: crashed: INFO: rcu detected stall in br_handle_frame
run #1: crashed: INFO: rcu detected stall in addrconf_dad_work
run #2: crashed: INFO: rcu detected stall in br_handle_frame
run #3: crashed: INFO: rcu detected stall in addrconf_dad_work
run #4: crashed: INFO: rcu detected stall in mld_ifc_timer_expire
run #5: crashed: INFO: rcu detected stall in mld_ifc_timer_expire
run #6: crashed: INFO: rcu detected stall in mld_ifc_timer_expire
run #7: crashed: INFO: rcu detected stall in br_handle_frame
run #8: crashed: INFO: rcu detected stall in br_handle_frame
run #9: crashed: INFO: rcu detected stall in mld_ifc_timer_expire
testing release v4.20
testing commit 8fe28cb58bcb235034b64cbbb7550a8a43fd88be with gcc (GCC) 8.1.0
run #0: crashed: INFO: rcu detected stall in addrconf_dad_work
run #1: crashed: INFO: rcu detected stall in addrconf_dad_work
run #2: crashed: INFO: rcu detected stall in br_handle_frame
run #3: crashed: INFO: rcu detected stall in br_handle_frame
run #4: crashed: INFO: rcu detected stall in mld_dad_timer_expire
run #5: crashed: INFO: rcu detected stall in addrconf_dad_work
run #6: crashed: INFO: rcu detected stall in mld_dad_timer_expire
run #7: crashed: INFO: rcu detected stall in addrconf_dad_work
run #8: crashed: INFO: rcu detected stall in br_handle_frame
run #9: crashed: INFO: rcu detected stall in br_handle_frame
testing release v4.19
testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d with gcc (GCC) 8.1.0
run #0: crashed: INFO: rcu detected stall in mld_ifc_timer_expire
run #1: crashed: INFO: rcu detected stall in br_handle_frame
run #2: crashed: INFO: rcu detected stall in br_handle_frame
run #3: crashed: INFO: rcu detected stall in addrconf_dad_work
run #4: crashed: INFO: rcu detected stall in addrconf_dad_work
run #5: crashed: INFO: rcu detected stall in br_handle_frame
run #6: crashed: INFO: rcu detected stall in addrconf_dad_work
run #7: crashed: INFO: rcu detected stall in addrconf_dad_work
run #8: crashed: INFO: rcu detected stall in br_handle_frame
run #9: crashed: INFO: rcu detected stall in br_handle_frame
testing release v4.18
testing commit 94710cac0ef4ee177a63b5227664b38c95bbf703 with gcc (GCC) 8.1.0
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in br_handle_frame
run #2: crashed: INFO: rcu detected stall in addrconf_dad_work
run #3: crashed: INFO: rcu detected stall in addrconf_dad_work
run #4: crashed: INFO: rcu detected stall in addrconf_dad_work
run #5: crashed: INFO: rcu detected stall in addrconf_dad_work
run #6: crashed: INFO: rcu detected stall in br_handle_frame
run #7: crashed: INFO: rcu detected stall in br_handle_frame
run #8: crashed: INFO: rcu detected stall in br_handle_frame
run #9: crashed: INFO: rcu detected stall in mld_ifc_timer_expire
testing release v4.17
testing commit 29dcea88779c856c7dc92040a0c01233263101d4 with gcc (GCC) 8.1.0
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in br_handle_frame
run #2: crashed: INFO: rcu detected stall in addrconf_dad_work
run #3: crashed: INFO: rcu detected stall in addrconf_dad_work
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in br_handle_frame
run #6: crashed: INFO: rcu detected stall in corrupted
run #7: crashed: INFO: rcu detected stall in corrupted
run #8: crashed: INFO: rcu detected stall in addrconf_dad_work
run #9: crashed: INFO: rcu detected stall in addrconf_dad_work
testing release v4.16
testing commit 0adb32858b0bddf4ada5f364a84ed60b196dbcda with gcc (GCC) 8.1.0
run #0: crashed: INFO: rcu detected stall in addrconf_dad_work
run #1: crashed: INFO: rcu detected stall in mld_dad_timer_expire
run #2: crashed: INFO: rcu detected stall in mld_dad_timer_expire
run #3: crashed: INFO: rcu detected stall in br_handle_frame
run #4: crashed: INFO: rcu detected stall in br_handle_frame
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in corrupted
run #7: crashed: INFO: rcu detected stall in addrconf_rs_timer
run #8: crashed: INFO: rcu detected stall in corrupted
run #9: crashed: INFO: rcu detected stall in mld_ifc_timer_expire
testing release v4.15
testing commit d8a5b80568a9cb66810e75b182018e9edb68e8ff with gcc (GCC) 8.1.0
run #0: crashed: INFO: rcu detected stall in addrconf_dad_work
run #1: crashed: INFO: rcu detected stall in br_handle_frame
run #2: crashed: INFO: rcu detected stall in corrupted
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in mld_dad_timer_expire
run #6: crashed: INFO: rcu detected stall in br_handle_frame
run #7: crashed: INFO: rcu detected stall in corrupted
run #8: crashed: INFO: rcu detected stall in br_handle_frame
run #9: crashed: INFO: rcu detected stall in br_handle_frame
testing release v4.14
testing commit bebc6082da0a9f5d47a1ea2edc099bf671058bd4 with gcc (GCC) 8.1.0
run #0: crashed: INFO: rcu detected stall in addrconf_dad_work
run #1: crashed: INFO: rcu detected stall in mld_dad_timer_expire
run #2: crashed: INFO: rcu detected stall in addrconf_dad_work
run #3: crashed: INFO: rcu detected stall in br_handle_frame
run #4: crashed: INFO: rcu detected stall in addrconf_dad_work
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in corrupted
run #7: crashed: INFO: rcu detected stall in mld_ifc_timer_expire
run #8: crashed: INFO: rcu detected stall in corrupted
run #9: crashed: INFO: rcu detected stall in mld_dad_timer_expire
testing release v4.13
testing commit 569dbb88e80deb68974ef6fdd6a13edb9d686261 with gcc (GCC) 8.1.0
run #0: crashed: INFO: rcu detected stall in mld_ifc_timer_expire
run #1: crashed: INFO: rcu detected stall in addrconf_dad_work
run #2: crashed: INFO: rcu detected stall in corrupted
run #3: crashed: INFO: rcu detected stall in mld_ifc_timer_expire
run #4: crashed: INFO: rcu detected stall in mld_dad_timer_expire
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in corrupted
run #7: crashed: INFO: rcu detected stall in br_handle_frame
run #8: crashed: INFO: rcu detected stall in mld_ifc_timer_expire
run #9: crashed: INFO: rcu detected stall in mld_ifc_timer_expire
testing release v4.12
testing commit 6f7da290413ba713f0cdd9ff1a2a9bb129ef4f6c with gcc (GCC) 8.1.0
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in br_handle_frame
run #2: crashed: INFO: rcu detected stall in corrupted
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in mld_dad_timer_expire
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in addrconf_dad_work
run #7: crashed: INFO: rcu detected stall in addrconf_dad_work
run #8: crashed: INFO: rcu detected stall in br_handle_frame
run #9: crashed: INFO: rcu detected stall in mld_ifc_timer_expire
testing release v4.11
testing commit a351e9b9fc24e982ec2f0e76379a49826036da12 with gcc (GCC) 7.3.0
run #0: crashed: INFO: rcu detected stall in br_handle_frame
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: rcu detected stall in addrconf_dad_work
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in corrupted
run #7: crashed: INFO: rcu detected stall in mld_ifc_timer_expire
run #8: crashed: INFO: rcu detected stall in br_handle_frame
run #9: crashed: INFO: rcu detected stall in mld_ifc_timer_expire
testing release v4.10
testing commit c470abd4fde40ea6a0846a2beab642a578c0b8cd with gcc (GCC) 5.5.0
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: rcu detected stall in addrconf_dad_work
run #3: crashed: INFO: rcu detected stall in br_handle_frame
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in mld_ifc_timer_expire
run #7: crashed: INFO: rcu detected stall in corrupted
run #8: crashed: INFO: rcu detected stall in addrconf_dad_work
run #9: crashed: INFO: rcu detected stall in addrconf_dad_work
testing release v4.9
testing commit 69973b830859bc6529a7a0468ba0d80ee5117826 with gcc (GCC) 5.5.0
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: rcu detected stall in addrconf_dad_work
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in br_handle_frame
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in mld_ifc_timer_expire
run #7: crashed: INFO: rcu detected stall in addrconf_dad_work
run #8: crashed: INFO: rcu detected stall in addrconf_dad_work
run #9: crashed: INFO: rcu detected stall in corrupted
testing release v4.8
testing commit c8d2bc9bc39ebea8437fd974fdbc21847bb897a3 with gcc (GCC) 5.5.0
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in br_handle_frame
run #2: crashed: INFO: rcu detected stall in corrupted
run #3: crashed: INFO: rcu detected stall in addrconf_dad_work
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in addrconf_dad_work
run #7: crashed: INFO: rcu detected stall in corrupted
run #8: crashed: INFO: rcu detected stall in addrconf_dad_work
run #9: crashed: INFO: rcu detected stall in mld_ifc_timer_expire
testing release v4.7
testing commit 523d939ef98fd712632d93a5a2b588e477a7565e with gcc (GCC) 5.5.0
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: rcu detected stall in br_handle_frame
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in mld_dad_timer_expire
run #6: crashed: INFO: rcu detected stall in mld_ifc_timer_expire
run #7: crashed: INFO: rcu detected stall in corrupted
run #8: crashed: INFO: rcu detected stall in corrupted
run #9: crashed: INFO: rcu detected stall in addrconf_dad_work
testing release v4.6
testing commit 2dcd0af568b0cf583645c8a317dd12e344b1c72a with gcc (GCC) 5.5.0
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: rcu detected stall in corrupted
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in corrupted
run #7: crashed: INFO: rcu detected stall in corrupted
run #8: crashed: INFO: rcu detected stall in mld_dad_timer_expire
run #9: crashed: INFO: rcu detected stall in mld_ifc_timer_expire
testing release v4.5
testing commit b562e44f507e863c6792946e4e1b1449fbbac85d with gcc (GCC) 5.5.0
run #0: crashed: INFO: rcu detected stall in br_handle_frame
run #1: crashed: INFO: rcu detected stall in br_handle_frame
run #2: crashed: INFO: rcu detected stall in br_handle_frame
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in addrconf_dad_work
run #5: crashed: INFO: rcu detected stall in addrconf_dad_work
run #6: crashed: INFO: rcu detected stall in corrupted
run #7: crashed: INFO: rcu detected stall in addrconf_dad_work
run #8: crashed: INFO: rcu detected stall in corrupted
run #9: crashed: INFO: rcu detected stall in corrupted
testing release v4.4
testing commit afd2ff9b7e1b367172f18ba7f693dfb62bdcb2dc with gcc (GCC) 5.5.0
run #0: crashed: INFO: rcu detected stall in addrconf_dad_work
run #1: crashed: INFO: rcu detected stall in addrconf_dad_work
run #2: crashed: INFO: rcu detected stall in corrupted
run #3: crashed: INFO: rcu detected stall in addrconf_dad_work
run #4: crashed: INFO: rcu detected stall in br_handle_frame
run #5: crashed: INFO: rcu detected stall in addrconf_dad_work
run #6: crashed: INFO: rcu detected stall in corrupted
run #7: crashed: INFO: rcu detected stall in mld_ifc_timer_expire
run #8: crashed: INFO: rcu detected stall in corrupted
run #9: crashed: INFO: rcu detected stall in mld_ifc_timer_expire
testing release v4.3
testing commit 6a13feb9c82803e2b815eca72fa7a9f5561d7861 with gcc (GCC) 5.5.0
run #0: crashed: INFO: rcu detected stall in addrconf_dad_work
run #1: crashed: INFO: rcu detected stall in addrconf_dad_work
run #2: crashed: INFO: rcu detected stall in br_handle_frame
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in corrupted
run #7: crashed: INFO: rcu detected stall in br_handle_frame
run #8: crashed: INFO: rcu detected stall in mld_ifc_timer_expire
run #9: crashed: no output from test machine
testing release v4.2
testing commit 64291f7db5bd8150a74ad2036f1037e6a0428df2 with gcc (GCC) 5.5.0
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in br_handle_frame
run #2: crashed: INFO: rcu detected stall in corrupted
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in br_handle_frame
run #5: crashed: INFO: rcu detected stall in addrconf_dad_work
run #6: crashed: INFO: rcu detected stall in br_handle_frame
run #7: crashed: INFO: rcu detected stall in corrupted
run #8: crashed: INFO: rcu detected stall in corrupted
run #9: crashed: no output from test machine
testing release v4.1
testing commit b953c0d234bc72e8489d3bf51a276c5c4ec85345 with gcc (GCC) 5.5.0
run #0: crashed: INFO: rcu detected stall in mld_ifc_timer_expire
run #1: crashed: INFO: rcu detected stall in mld_ifc_timer_expire
run #2: crashed: INFO: rcu detected stall in br_handle_frame
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in mld_ifc_timer_expire
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in br_handle_frame
run #7: crashed: INFO: rcu detected stall in br_handle_frame
run #8: crashed: INFO: rcu detected stall in addrconf_dad_work
run #9: crashed: no output from test machine
revisions tested: 24, total time: 4h28m29.30203478s (build: 1h41m6.773507113s, test: 2h40m43.064771407s)
the crash already happened on the oldest tested release
crash: no output from test machine