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 all runs: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata testing current HEAD ec681c53f8d2d0ee362ff67f5b98dd8263c15002 testing commit ec681c53f8d2d0ee362ff67f5b98dd8263c15002 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 4c4c05ca4bdce07c0dcf0516a30ec7998c3081d051f6c88993586297c1f915a9 all runs: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata revisions tested: 2, total time: 20m50.304229441s (build: 12m35.635176768s, test: 7m41.314728636s) the crash still happens on HEAD commit msg: Merge tag 'net-5.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 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: 13933 at lib/debugobjects.c:505 debug_print_object+0x16e/0x250 lib/debugobjects.c:505 Modules linked in: CPU: 1 PID: 13933 Comm: syz-executor.4 Not tainted 5.15.0-rc5-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 e8 1f 89 4c 89 ee 48 c7 c7 00 dc 1f 89 e8 ba e2 9b 04 <0f> 0b 83 05 45 ac f3 08 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3 RSP: 0018:ffffc9000a5df478 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 RDX: 0000000000000001 RSI: ffffffff891fd7e0 RDI: fffff520014bbe81 RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880b9f2bf87 R10: ffffed10173e57f0 R11: 000000004245444f R12: ffffffff88cd1780 R13: ffffffff891fe100 R14: ffffffff815ab7b0 R15: ffffffff8ec7ea70 FS: 00007fdf01caa700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc80de14108 CR3: 00000000235f3000 CR4: 00000000003506e0 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:1727 ieee80211_setup_sdata+0xc82/0x1060 net/mac80211/iface.c:1606 ieee80211_runtime_change_iftype net/mac80211/iface.c:1715 [inline] ieee80211_if_change_type+0x50e/0x6a0 net/mac80211/iface.c:1737 ieee80211_change_iface+0x50/0x320 net/mac80211/cfg.c:159 rdev_change_virtual_intf net/wireless/rdev-ops.h:69 [inline] cfg80211_change_iface+0x24a/0xc70 net/wireless/util.c:1073 nl80211_set_interface+0x435/0x840 net/wireless/nl80211.c:3930 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:2510 genl_rcv+0x1f/0x30 net/netlink/genetlink.c:803 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x42e/0x700 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x706/0xbf0 net/netlink/af_netlink.c:1935 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xab/0xe0 net/socket.c:724 __sys_sendto+0x1a4/0x270 net/socket.c:2036 __do_sys_sendto net/socket.c:2048 [inline] __se_sys_sendto net/socket.c:2044 [inline] __x64_sys_sendto+0xd8/0x1b0 net/socket.c:2044 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:00007fdf01ca8f80 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fdf01ca90f0 RCX: 00000000004193ec RDX: 0000000000000024 RSI: 00007fdf01ca9140 RDI: 0000000000000006 RBP: 0000000000000000 R08: 00007fdf01ca8fd4 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 00007fdf01ca9140 R14: 0000000000000006 R15: 0000000000000000