bisecting fixing commit since 92bf22614b21a2706f4993b278017e437f7785b3 building syzkaller on 2ce644fcea660c78bc6a3ce7e05079a730743671 testing commit 92bf22614b21a2706f4993b278017e437f7785b3 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 84a587466621a2614c27abc164bf1901a888a832a5e96a890ab101f45f07c394 all runs: crashed: WARNING in drv_remove_interface testing current HEAD 787af64d05cd528aac9ad16752d11bb1c6061bb9 testing commit 787af64d05cd528aac9ad16752d11bb1c6061bb9 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 8c9009832478aeed023c619c2ae4552e29b28b548743be75835988213ec9a0d2 run #0: basic kernel testing failed: BUG: program execution failed: executor NUM: exit status NUM run #1: crashed: WARNING in drv_remove_interface run #2: crashed: WARNING in drv_remove_interface run #3: crashed: WARNING in drv_remove_interface run #4: crashed: WARNING in drv_remove_interface run #5: crashed: WARNING in drv_remove_interface run #6: crashed: WARNING in drv_remove_interface run #7: crashed: WARNING in drv_remove_interface run #8: crashed: WARNING in drv_remove_interface run #9: crashed: WARNING in drv_remove_interface revisions tested: 2, total time: 20m48.790783634s (build: 10m42.243606728s, test: 9m12.584493827s) the crash still happens on HEAD commit msg: mm: page_alloc: validate buddy before check its migratetype. crash: WARNING in drv_remove_interface ------------[ cut here ]------------ wlan0: Failed check-sdata-in-driver check, flags: 0x4 WARNING: CPU: 0 PID: 632 at net/mac80211/driver-ops.c:97 drv_remove_interface+0x2da/0x340 Modules linked in: CPU: 0 PID: 632 Comm: syz-executor.2 Tainted: G W 5.17.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:drv_remove_interface+0x2da/0x340 Code: c1 e9 03 80 3c 01 00 75 72 48 8b 83 08 06 00 00 48 8d b3 28 06 00 00 48 c7 c7 60 b5 fa 89 48 85 c0 48 0f 45 f0 e8 de 45 67 00 <0f> 0b eb 90 e8 5d 3b d4 f9 e9 ff fd ff ff 4c 89 ef e8 40 3b d4 f9 RSP: 0018:ffffc90005ac7768 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff888063a18c80 RCX: 0000000000000000 RDX: 0000000000000001 RSI: ffffffff893e6560 RDI: fffff52000b58edf RBP: ffff888017fa8e60 R08: 0000000000000001 R09: ffff8880b9e34187 R10: ffffed10173c6830 R11: 46203a306e616c77 R12: ffff888017faaa20 R13: ffff888063a19298 R14: dffffc0000000000 R15: ffff888017fa8e60 FS: 00007f74b25d9700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f618a400718 CR3: 0000000061dfb000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ieee80211_do_stop+0xe36/0x1a90 ieee80211_stop+0xad/0x680 __dev_close_many+0x18c/0x290 __dev_change_flags+0x24f/0x650 dev_change_flags+0x86/0x150 devinet_ioctl+0x102e/0x16c0 inet_ioctl+0x1a8/0x290 sock_do_ioctl+0xc9/0x1c0 sock_ioctl+0x278/0x510 __x64_sys_ioctl+0x11f/0x190 do_syscall_64+0x35/0x80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x465b09 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f74b25d9188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09 RDX: 0000000020001000 RSI: 0000000000008914 RDI: 0000000000000003 RBP: 00000000004b069f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007ffff6f77d9f R14: 00007f74b25d9300 R15: 0000000000022000