bisecting fixing commit since 7e25f40eab52c57ff6772d27d2aef3640a3237d7 building syzkaller on c59079a693ad1d89c782f7db14b9f1c5629e2abc testing commit 7e25f40eab52c57ff6772d27d2aef3640a3237d7 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: f51b4523c51aa937f87fdbae186d80e7a9abf6b2956573d4dca542ec94340cc4 run #0: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata run #1: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata run #2: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata run #3: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata run #4: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata run #5: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata run #6: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata run #7: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata run #8: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata run #9: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata run #10: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata run #11: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata run #12: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata run #13: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata run #14: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata run #15: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata run #16: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata run #17: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata run #18: crashed: INFO: task hung in linkwatch_event run #19: crashed: INFO: task hung in addrconf_dad_work testing current HEAD 09688c0166e76ce2fb85e86b9d99be8b0084cdf9 testing commit 09688c0166e76ce2fb85e86b9d99be8b0084cdf9 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 5f8203a02a262cfbbfef8e86be59fac10517017e175f389d9e1443e1cd18d0f7 all runs: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata revisions tested: 2, total time: 23m57.458198424s (build: 11m52.319721424s, test: 11m12.291671604s) the crash still happens on HEAD commit msg: Linux 5.17-rc8 crash: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata ------------[ cut here ]------------ ODEBUG: init active (active state 0) object type: timer_list hint: 0x0 WARNING: CPU: 1 PID: 9174 at lib/debugobjects.c:505 debug_print_object+0x16e/0x250 lib/debugobjects.c:505 Modules linked in: CPU: 1 PID: 9174 Comm: syz-executor.5 Not tainted 5.17.0-rc8-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:debug_print_object+0x16e/0x250 lib/debugobjects.c:505 Code: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 af 00 00 00 48 8b 14 dd 00 c5 41 89 4c 89 ee 48 c7 c7 00 b9 41 89 e8 8f 42 ad 04 <0f> 0b 83 05 a5 db 15 09 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3 RSP: 0018:ffffc900046b7480 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 RDX: 0000000000000001 RSI: ffffffff8941b4a0 RDI: fffff520008d6e82 RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880b9f34187 R10: ffffed10173e6830 R11: 0000000000000001 R12: ffffffff88ed85e0 R13: ffffffff8941be80 R14: ffffffff815c25b0 R15: ffffffff8efc00f0 FS: 00007fb1fa284700(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f06e0b9e108 CR3: 0000000075325000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __debug_object_init+0x524/0xd10 lib/debugobjects.c:593 debug_timer_init kernel/time/timer.c:724 [inline] debug_init kernel/time/timer.c:772 [inline] init_timer_key+0x24/0x250 kernel/time/timer.c:816 ieee80211_ibss_setup_sdata+0x28/0x1b0 net/mac80211/ibss.c:1732 ieee80211_setup_sdata+0xc82/0x1060 net/mac80211/iface.c:1694 ieee80211_runtime_change_iftype net/mac80211/iface.c:1803 [inline] ieee80211_if_change_type+0x50e/0x6a0 net/mac80211/iface.c:1825 ieee80211_change_iface+0x50/0x320 net/mac80211/cfg.c:190 rdev_change_virtual_intf net/wireless/rdev-ops.h:69 [inline] cfg80211_change_iface+0x4a3/0xbf0 net/wireless/util.c:1076 nl80211_set_interface+0x423/0x830 net/wireless/nl80211.c:3984 genl_family_rcv_msg_doit+0x1e4/0x2f0 net/netlink/genetlink.c:731 genl_family_rcv_msg net/netlink/genetlink.c:775 [inline] genl_rcv_msg+0x27a/0x4a0 net/netlink/genetlink.c:792 netlink_rcv_skb+0x118/0x370 net/netlink/af_netlink.c:2494 genl_rcv+0x1f/0x30 net/netlink/genetlink.c:803 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline] netlink_unicast+0x430/0x700 net/netlink/af_netlink.c:1343 netlink_sendmsg+0x770/0xc10 net/netlink/af_netlink.c:1919 sock_sendmsg_nosec net/socket.c:705 [inline] sock_sendmsg+0xab/0xe0 net/socket.c:725 __sys_sendto+0x1a4/0x270 net/socket.c:2040 __do_sys_sendto net/socket.c:2052 [inline] __se_sys_sendto net/socket.c:2048 [inline] __x64_sys_sendto+0xd8/0x1b0 net/socket.c:2048 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4193ec Code: fa fa ff ff 44 8b 4c 24 2c 4c 8b 44 24 20 89 c5 44 8b 54 24 28 48 8b 54 24 18 b8 2c 00 00 00 48 8b 74 24 10 8b 7c 24 08 0f 05 <48> 3d 00 f0 ff ff 77 34 89 ef 48 89 44 24 08 e8 20 fb ff ff 48 8b RSP: 002b:00007fb1fa282f80 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fb1fa2830f0 RCX: 00000000004193ec RDX: 0000000000000024 RSI: 00007fb1fa283140 RDI: 0000000000000005 RBP: 0000000000000000 R08: 00007fb1fa282fd4 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 00007fb1fa283140 R14: 0000000000000005 R15: 0000000000000000